CN2265861Y

CN2265861Y - Drum for filter centrifuge

Info

Publication number: CN2265861Y
Application number: CN 96227466
Authority: CN
Inventors: 高广益
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-28
Filing date: 1996-03-28
Publication date: 1997-10-29
Anticipated expiration: 2006-03-28

Abstract

The utility model discloses a rotating drum for filter centrifuges. A plurality of movable filter beds composed of two belt wheels and ring belt-shaped filter media wrapped on the two belt wheels are installed on the prismatic wall of the rotating drum and are connected into a whole through flexible shaft couplers, and then the goal of the utility model is realized under the drive of an auxiliary shaft and a moving shaft driving mechanisms. The utility model not only can make filter centrifuges carry out the operation of continuous filtration and discharging, but also make the filter centrifuges dynamically regulate discharging speed according to the requirements of production and technology, the discharging speed is independent of the properties of solid-phase objects, and the filter media are in a dynamic regeneration state. The utility model has the advantages of reasonable design and simple structure, and can be suitable for the fields of solid and liquid separation in various industries.

Description

A kind of rotary drum of filtering centrifuge

The present invention relates to a kind of filtering centrifuge, particularly relate to a kind of rotary drum that can carry out the filtering centrifuge of continuous filtration continuous discharge operation.Industries such as the filtering centrifuge that is made of the rotary drum of the technical program is applicable to pharmacy, sugaring, the food that need separate solidliquid mixture, brewages, chemical industry, coal, ore in sand form, environmental protection.

The rotary drum of the filtering centrifuge of prior art is by the rotary drum main body, and filter medium and shedding mechanism are formed, and wherein the rotary drum main body is by the rotatory drum wall with a plurality of apertures, at the bottom of the rotary drum and main shaft form.The structure of rotatory drum wall mainly contains two classes: the structure of a class rotatory drum wall is a tapering shape, also claim the tryepan blue formula, with Chinese patent 93119236.6 and the disclosed technology of 2L93209768.5 is representative, its discharging mechanism is when rotary drum rotates at a high speed, the solid formation on the rotary drum inner filter media just obtain a centrifugal force and rotary drum bus parallel direction on component overcome frictional force between it and the filter medium, when the component of the centrifugal force that solid formation obtains just skids off rotary drum along the filter medium surface during greater than the frictional force between it and the filter medium, finish discharge process, but because the rotating speed of rotary drum, the cone angle of rotatory drum wall, the character of filter residue and process conditions etc. can both influence the component of centrifugal force and the size of frictional force, therefore, the reliability of this kind discharge process and degree of perfection are subjected to the restriction of several factors; The structure of another kind of rotatory drum wall is the garden tubular, is representative with Chinese patent application 90108082 disclosed push-type centrifuge technology, but because its pusher ring can not be done omnidistance pusher action for rotatory drum wall, thereby cause discharging efficient very low.The rotary drum of the filtering centrifuge of all prior aries all has a common characteristic: promptly the filter medium in the rotary drum all is fixed for rotatory drum wall in the course of work, promptly belong to fixedly filter bed category, Gu and cause them or filtration and discharging not to carry out simultaneously, though perhaps filtration and discharging can be carried out simultaneously, both performances can have been limited again because of conditioning each other, perhaps discharging is not thorough, in a word, the technical scheme of shedding mechanism affects the structure and the service behaviour of filtering centrifuge rotary drum to a great extent, therefore, providing a kind of has continuously, efficiently, thoroughly, reliably, the rotary drum technical scheme of simple shedding mechanism is to improve the major subjects of filtering centrifuge technical performance.

The purpose of this invention is to provide a kind of rotary drum that can when carrying out continuous filtration, carry out continuous discharge and the thoroughly reliable filtering centrifuge of discharging, thereby overcome and remedied the deficiency of prior art, make the technical performance of filtering centrifuge be tending towards perfect more.

The objective of the invention is to realize in the following way: the rotary drum of this filtering centrifuge mainly comprises by rotatory drum wall, at the bottom of the rotary drum and the rotary drum main body formed of hollow spindle, the main shaft drives wheel, auxilliary axle, auxilliary axle driving wheel and filter medium etc., its special character is that ㈠ main shaft drives wheel is fixed on the axle head of hollow spindle, rotatory drum wall is prismatic, be convenient to install the master who supports filter medium, driven pulley and bearing, be equipped with on the prismatic surface of removable filter bed porose on the rotatory drum wall, its position is positioned at the centre of prismatic surface, corresponding with the ring-band shape filter medium, fall on the filter medium and can make the liquid phase and the solid phase that leach successfully discharge rotary drum can guarantee solidliquid mixture; The auxilliary axle of ㈡ by bearing fixing in hollow spindle, concentric with hollow spindle, it is positioned at and is fixed with auxilliary axle driving wheel on the outer axle head of hollow spindle, it is positioned at the moving axis transmission mechanism that the rotation of power shaft can be passed to the perpendicular staggered output shaft of power shaft is installed on the axle head of rotary drum, the power input wheel of moving axis transmission mechanism is fixed on the auxilliary axle, the two ends of power output shaft by bearing fixing on one of them prismatic surface of rotatory drum wall, parallel and the auxilliary axis vertical interlaced of the axis of power output shaft with the prismatic surface at place, also with each prismatic surface on driving pulley be positioned on the same cross section of rotatory drum wall; The ㈢ filter medium is a ring-band shape, and be flexible structure, surround that its axis is parallel to each other and all with rotary drum axis perpendicular staggered driving pulley and driven pulley on, and by the master, the plane of the ring-band shape filter medium that driven pulley is determined is parallel with the prismatic surface at its place, and can be around the master, driven pulley rotates, the ring-band shape filter medium, driving pulley and driven pulley are formed removable filter bed, the master of several removable filter beds, the two ends of driven pulley are separately fixed on remaining prismatic surface of rotatory drum wall by bearing, in order to realize filtration duty and the task of solid formation being taken to outlet side; Be connected by the flexible coupling of its axis angle allowable between ㈣ power output shaft and the adjacent driving pulley and between adjacent two driving pulleys, in order to solid auxilliary rotation is passed to the rotation of the driving pulley of removable filter bed with realization ring-band shape filter medium more than or equal to the axis angle of the axis angle of power output shaft and adjacent driving pulley and adjacent two driving pulleys.

The rotary drum of above-mentioned filtering centrifuge, the rib number of the rotatory drum wall in its described rotary drum main body is relevant with the characteristic of flexible coupling, the rib number of its rotatory drum wall is can guarantee selected flexible coupling operate as normal, the axis angle that is the axis angle of power output shaft and adjacent driving pulley and adjacent two driving pulleys is all in selected flexible coupling axis angle scope allowable, so that removable filter bed and flexible coupling can operate as normal.

The rotary drum of above-mentioned filtering centrifuge, hole on the prismatic surface of its described rotatory drum wall can be a macropore, also can be a plurality of apertures, can also be the combination of several apertures and macropore, fall on the ring-band shape filter medium and can make the liquid phase and the solid phase that leach successfully discharge rotary drum can guarantee solidliquid mixture.

The rotary drum of above-mentioned filtering centrifuge, its described removable filter bed of being made up of ring-band shape filter medium, driving pulley and driven pulley can be fixedly mounted on the lateral surface of rotatory drum wall, also can be fixedly mounted on the medial surface of rotatory drum wall, can also be fixedly mounted between the interior lateral surface of rotatory drum wall.

The rotary drum of above-mentioned filtering centrifuge, its described flexible coupling is a Hooks coupling universal coupling, also can be the metallic elastic bellows coupling, can also be garden bevel gear shaft coupling.

The rotary drum of above-mentioned filtering centrifuge, its described moving axis transmission mechanism is made up of power input chain or belt wheel, chain or band, chain or belt wheel, worm screw, worm gear and power output shaft, middle part at power output shaft, be fixed with worm gear, the two ends of the worm screw that is meshed with worm gear by bearing fixing on rotatory drum wall, the axis of worm screw and the axis normal of worm gear are staggered, also be fixed with chain or belt wheel on the worm screw, chain or belt wheel and power input chain or belt wheel are positioned at same plane, and are connected by chain or band.

The rotary drum of above-mentioned filtering centrifuge, its described moving axis transmission mechanism is made up of power input belt wheel, driving-belt, belt wheel and power output shaft, belt wheel is fixed on the middle part of power output shaft, and power input belt wheel is connected with the semidecussation formula band kind of drive by driving-belt with belt wheel.

The present invention compares with existing fixedly depth filtration, deep bed filtration centrifuge technology, owing to adopted removable filter bed scheme, therefore has following good effect: can when carrying out continuous filtration, carry out the continuous discharge operation, and discharge direction is identical with the centrifugal force field direction, thereby the discharging operation is thoroughly reliable, production efficiency improves, discharge rate can be according to producing and technological requirement is dynamically adjusted when filtering discharging and do not had direct relation with the character of solid formation, wide adaptability, filter medium is in reproduced state all the time, and filter efficiency improves.

Concrete structure of the present invention is provided by the following drawings and embodiment:

Fig. 1 is the front view of a kind of structure of the present invention.

Fig. 2 is the sectional view of structure shown in Figure 1.

Fig. 3 is the expanded view of the rotatory drum wall of structure shown in Figure 1.

Fig. 4 is the front view of another kind of structure of the present invention.

Fig. 5 is the sectional view of structure shown in Figure 4.

Below with reference to drawings and Examples the present invention is described in further detail.

Embodiment one: with reference to Fig. 1, Fig. 2 and Fig. 3, the rotary drum main body is by rotatory drum wall 1, at the bottom of the rotary drum 9 and the rigid unitary formed of hollow spindle 11 3 parts, main shaft 11 is a hollow shaft, by bearing fixing in frame 10 upper casings, and can be around self axis rotation on frame 10, be fixed with main shaft drives wheel 12 on the axle head of hollow spindle 11, main shaft drives wheel 12 is dragged to rotary drum by external force power is provided, the shape of rotatory drum wall 1 is eight prismatic, 9 places porose 7 at the bottom of the close rotary drum on rotatory drum wall 1 one of them prismatic surface, path as the driving member chain 8 of moving axis transmission mechanism, there is an oblong aperture 18 in the centre of remaining prismatic surface, its position is corresponding with the position of ring-band shape filter medium, should be able to guarantee that solidliquid mixture falls on the ring-band shape filter medium 17 and make the liquid phase and the solid phase that leach successfully discharge rotary drum; Auxilliary axle 14 by bearing fixing in hollow spindle 11, concentric with hollow spindle 11, it is positioned at and is fixed with an auxilliary axle driving wheel 13 on hollow spindle 11 axle head outward, it is positioned on the axle head of rotatory drum wall 1 and is fixed with by sprocket wheel 15, chain 8, sprocket wheel 6, worm screw 5, the moving axis transmission mechanism that worm gear 4 and power output shaft 3 are formed, sprocket wheel 15 is fixed on the auxilliary axle 14, the two ends of power output shaft 3 are fixed on the rotatory drum wall 1 by bearing 20 on the lateral surface of porose 7 prismatic surface near the end at the bottom of the rotary drum, the parallel axis normal with auxilliary axle 14 with the prismatic surface at place of its axis is staggered, also with each prismatic surface on driving pulley 16 be positioned on the same cross section of rotatory drum wall 1, middle part at power output shaft 3, be fixed with worm gear 4, the two ends of the worm screw 5 that is meshed with worm gear 4 are fixed on the lateral surface of rotatory drum wall 1 by bearing 2, the axis normal of axis of worm screw 5 and worm gear 4 is staggered, on worm screw 5, also be fixed with sprocket wheel 6, sprocket wheel 6 is positioned at same plane with sprocket wheel 15, and be connected by chain 8, it turns to the ring-band shape filter medium 17 that should make the rotary drum central side to rotate to drum top delivery end from drum end feeding ends; Ring-band shape filter medium 17 is a multilaminar high strength degree nylon fiber fabric, hold and be stretched in its axis is parallel to each other and all with perpendicular staggered driving pulley 16 of rotary drum axis and driven pulley 19 on, and by the master, the plane of driven pulley 16 and the 19 ring-band shape filter mediums of determining 17 is parallel with the prismatic surface at its place, and can be around the master under the drive of driving pulley 16, driven

pulley

16 and 19 rotations, ring-band shape filter medium 17, driving pulley 16 and driven pulley 19 are formed removable filter bed, the master of several removable filter beds, driven

pulley

16 and 19 two ends are separately fixed on the lateral surface of rotatory drum wall 1 remaining prismatic surface by bearing 20, the end of driving pulley 16 at the bottom of close rotary drum, driven pulley 19 is at the end near the rotary drum top; Between power output shaft 3 and the adjacent driving pulley 16 and be connected by cross-axle universal shaft coupling 21 between adjacent two driving pulleys 16, the axis angle allowable of cross-axle universal shaft coupling 21 is smaller or equal to 45 degree, when rotatory drum wall 1 is eight prisms, its heart angle, garden is 45 degree, be that angle and the angle between adjacent two driving pulleys 16 between power output shaft 3 and the adjacent driving pulley 16 is 45 degree, all in the axis angle scope allowable of cross-axle universal shaft coupling 21, thereby can guarantee cross-axle universal shaft coupling 21 operate as normal.

Embodiment two: with reference to Fig. 4 and Fig. 5, the rotary drum main body is by rotatory drum wall 1, at the bottom of the rotary drum 9 and the rigid unitary formed of hollow spindle 11 3 parts, main shaft 11 is a hollow shaft, by bearing fixing in frame 10 upper casings, and can be around self axis rotation on frame 10, be fixed with main shaft drives wheel 12 on the axle head of hollow spindle 11, main shaft drives wheel 12 is dragged to rotary drum by external force power is provided, the shape of rotatory drum wall 1 is a hexagon, 9 places porose 7 at the bottom of the close rotary drum on rotatory drum wall 1 one of them prismatic surface, as power output shaft 3 installing spaces, there is an oblong aperture 18 in the centre of remaining prismatic surface, its position is corresponding with the position of ring-band shape filter medium, falls on the filter medium 17 and makes the liquid phase and the solid phase that leach successfully discharge rotary drum can guarantee solidliquid mixture, simultaneously also as the installing space of removable filter bed; Auxilliary axle 14 by bearing fixing in hollow spindle 11, concentric with hollow spindle 11, it is positioned at and is fixed with an auxilliary axle driving wheel 13 on hollow spindle 11 axle head outward, it is positioned on the axle head of rotatory drum wall 1 and is fixed with by belt wheel 15, be with 8, belt wheel 4 and power output shaft 3 are formed the moving axis transmission mechanism, belt wheel 15 is fixed on the auxilliary axle 14, the two ends of power output shaft 3 are fixed on the rotatory drum wall 1 in the hole 7 by bearing 20, between the interior lateral surface, the parallel axis normal with auxilliary axle 14 with the prismatic surface at place of its axis is staggered, also with each prismatic surface on driving pulley 16 be positioned on the same cross section of rotatory drum wall 1, middle part at power output shaft 3, be fixed with belt wheel 4, belt wheel 4 and belt wheel 15 are by being with 8 to be connected with the semidecussation formula band kind of drive, and it turns to the ring-band shape filter medium 17 that should make the rotary drum central side to rotate to drum top delivery end from drum end feeding ends; Ring-band shape filter medium 17 is a multilaminar high strength degree nylon fiber fabric, hold and be stretched in its axis is parallel to each other and all with perpendicular staggered driving pulley 16 of rotary drum axis and driven pulley 19 on, and by the master, the plane of driven pulley 16 and the 19 ring-band shape filter mediums of determining 17 is parallel with the prismatic surface at its place, and can be around the master under the drive of driving pulley 16, driven

pulley

16 and 19 two ends are separately fixed in the hole 18 on rotatory drum wall 1 remaining prismatic surface by bearing 20, between the interior lateral surface, the end of driving pulley 16 at the bottom of close rotary drum, driven pulley 19 is at the end near the rotary drum top; Between power output shaft 3 and the adjacent driving pulley 16 and be connected by garden bevel gear 21 between adjacent two driving pulleys 16, the tolerance zone of two axial lines angle is that 10 degree are to 170 degree during the garden Bevel Gear Transmission, when rotatory drum wall 1 is six prisms, its heart angle, garden is 60 degree, be that angle and the angle between adjacent two driving pulleys 16 between power output shaft 3 and the adjacent driving pulley 16 is 60 degree, all in the tolerance zone of nonopiate garden bevel gear two axial lines angle, thereby can guarantee garden bevel gear shaft coupling 21 operate as normal.

It more than is the static structure of the technical program rotary drum, in the work, the rotary drum main body is rotated at a high speed around self axis under the dragging of external force by main shaft drives wheel 12, separate solidliquid mixture and the solid formation on the ring-band shape filter medium 17 of delivery end is discharged rotary drum to produce enough centrifugal force, auxilliary axle 14 rotates under the dragging of external force by auxilliary axle driving wheel 13, the power of rotation is provided for removable filter bed, the moving axis transmission mechanism will be assisted the rotation that axle 14 rotation speed change commutates into the driving pulley 16 of removable filter bed, driving ring-band shape filter medium 17 rotates, ring-band shape filter medium 17 is rotating (revolution) at a high speed with when finishing common filtration duty with rotatory drum wall 1, under the drive of moving axis transmission mechanism, do again and the parallel rotation (rotation) of drum wall bus, to finish the task of solid formation being taken to bulging top delivery end from drum end feeding end, the solidliquid mixture that enters through feed pipe 23 and distributing device 22 on the ring-band shape filter medium 17 of feeding end carries out Separation of Solid and Liquid under the acting in conjunction of centrifugal force and filter medium, be that liquid phase is passed the filter medium solid phase and then is filtered medium and holds back, the solid formation that is trapped within on the filter medium is taken to delivery end by ring-band shape filter medium 17, this process does not have direct relation because of not having the relative motion between solid formation and the filter medium thereby the character of its speed and solid formation, support belt wheel 19 places of filter medium 17 at delivery end, solid formation is thrown away filter medium by centrifugal force, promptly throw away rotary drum, realized the discharging operation, because discharge direction is identical with the centrifugal force field direction, therefore the discharging operation is thoroughly reliable, because the continuous rotation of ring-band shape filter medium 17, thereby can take solid formation to delivery end from feeding end continuously and carry out the discharging operation, that part of ring-band shape filter medium 17 that sheds solid formation forwards feeding end to after delivery end belt wheel 19 turns to, also be subjected to the backwash of liquid phase in the way and obtain regeneration, just can accept solidliquid mixture again and begin new filtration, so go round and begin again, so just realized the task of the continuous filtration continuous discharge of filtering centrifuge, when the rotating speed of solid main shaft 11 equates with the rotating speed of auxilliary axle 14, the rotational velocity of ring-band shape filter medium 17 is zero, filter bed is motionless, also not discharging, when the rotating speed of solid main shaft 11 and the rotating speed of auxilliary axle 14 are unequal, the rotational velocity of ring-band shape filter medium 17 is non-vanishing, filter bed begins to rotate, carry out the discharging operation, the diaxon speed discrepancy is big more, the rotational velocity of ring-band shape filter medium 17 is big more, discharge rate is fast more, just can reach the purpose of adjusting discharge rate by adjusting the diaxon speed discrepancy.

Claims

1. the rotary drum of a filtering centrifuge, mainly comprise rotary drum main body, main shaft drives wheel (12), auxilliary axle (14), auxilliary axle driving wheel (13) and the filter medium (17) formed by (9) at the bottom of rotatory drum wall (1), the rotary drum and hollow spindle (11), it is characterized in that: ㈠ main shaft drives wheel (12) is fixed on the axle head of hollow spindle (11), rotatory drum wall (1) is prismatic, is equipped with on the rotatory drum wall (1) on the prismatic surface of removable filter bed porose (18); The auxilliary axle of ㈡ (14) by bearing fixing in hollow spindle (11), it is positioned at and is fixed with auxilliary axle driving wheel (13) on the outer axle head of hollow spindle (11), it is positioned at the moving axis transmission mechanism that the rotation of power shaft can be passed to the perpendicular staggered output shaft of power shaft is installed on the axle head of rotary drum, the power input wheel of moving axis transmission mechanism (15) is fixed on the auxilliary axle (14), the two ends of power output shaft (3) are fixed on one of them prismatic surface of rotatory drum wall (1) by bearing (20), the parallel and auxilliary axis vertical interlaced with the prismatic surface at place of the axis of power output shaft (3); ㈢ filter medium (17) is a ring-band shape, surround that its axis is parallel to each other and all with perpendicular staggered driving pulley of rotary drum axis (16) and driven pulley (19) on, and the plane of the ring-band shape filter medium of being determined by driving and driven belt wheel (16) and (19) (17) is parallel with the prismatic surface at its place, filter medium (17), driving pulley (16) and driven pulley (19) are formed removable filter bed, if be separately fixed on remaining prismatic surface of rotatory drum wall (1) by bearing (20) in the driving and driven belt wheel (16) of individual removable filter bed and the two ends of (19); Be connected by the flexible coupling of its axis angle allowable between ㈣ power output shaft (3) and the adjacent driving pulley (16) and between adjacent two driving pulleys (16) more than or equal to the axis angle of the axis angle of power output shaft (3) and adjacent driving pulley (16) and adjacent two driving pulleys (16).

2. the rotary drum of filtering centrifuge according to claim 1, the rib number that it is characterized in that described rotatory drum wall (1) to be can guarantee selected flexible coupling (21) operate as normal, and promptly the axis angle of the axis angle of power output shaft (3) and adjacent driving pulley (16) and adjacent two driving pulleys (16) is all in the axis angle scope allowable of selected flexible coupling.

3. the rotary drum of filtering centrifuge according to claim 1 is characterized in that the hole (18) on the prismatic surface of described rotatory drum wall (1) is a macropore, also can be the combination of several apertures and macropore.

4. the rotary drum of filtering centrifuge according to claim 1, it is characterized in that the described removable filter bed of being made up of filter medium (17), driving pulley (16) and driven pulley (19) is fixedly mounted on the lateral surface of rotatory drum wall (1), also can be fixedly mounted between the interior lateral surface of rotatory drum wall (1).

5. wanting the rotary drum of described filtering centrifuge according to claim 4, it is characterized in that described flexible coupling (21) is a Hooks coupling universal coupling, also can be the metallic elastic bellows coupling, can also be garden bevel gear shaft coupling.

6. according to claim 1,2,3, the rotary drum of 4 or 5 described filtering centrifuges, it is characterized in that described moving axis transmission mechanism is by chain or belt wheel (15), chain or band (8), chain or belt wheel (6), worm screw (5), worm gear (4) and power output shaft (3) are formed, be fixed with worm gear (4) in the middle part of power output shaft (3), the two ends of the worm screw (5) that is meshed with worm gear (4) are fixed on the rotatory drum wall (1) by bearing (2), the axis normal of axis of worm screw (5) and worm gear (4) is staggered, also be fixed with chain or belt wheel (6) on the worm screw (5), chain or belt wheel (6) are positioned at same plane with chain or belt wheel (15), and are connected by chain or band (8).

7. according to the rotary drum of claim 1,2,3,4 or 5 described filtering centrifuges, it is characterized in that described moving axis transmission mechanism is made up of belt wheel (15), band (8), belt wheel (4) and power output shaft (3), belt wheel (4) is fixed on the middle part of power output shaft (3), and belt wheel (15) is connected with the semidecussation formula band kind of drive by band (8) with belt wheel (4).