CN105436067B - Continuously-circulating screen vibrating sieve - Google Patents

Continuously-circulating screen vibrating sieve Download PDF

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Publication number
CN105436067B
CN105436067B CN201510768423.2A CN201510768423A CN105436067B CN 105436067 B CN105436067 B CN 105436067B CN 201510768423 A CN201510768423 A CN 201510768423A CN 105436067 B CN105436067 B CN 105436067B
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China
Prior art keywords
screen
funnel
screen cloth
circulation
chain
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Application number
CN201510768423.2A
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Chinese (zh)
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CN105436067A (en
Inventor
侯勇俊
何强
方潘
王钰文
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Southwest Petroleum University
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Southwest Petroleum University
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Priority to CN201510768423.2A priority Critical patent/CN105436067B/en
Publication of CN105436067A publication Critical patent/CN105436067A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/10Screens in the form of endless moving bands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/40Resonant vibration screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4645Screening surfaces built up of modular elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50Cleaning
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06Arrangements for treating drilling fluids outside the borehole
    • E21B21/063Arrangements for treating drilling fluids outside the borehole by separating components
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06Arrangements for treating drilling fluids outside the borehole
    • E21B21/063Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065Separating solids from drilling fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/02Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces

Abstract

The invention discloses a continuously-circulating screen vibrating sieve. The continuously-circulating screen vibrating sieve is mainly composed of a screen circulation system, a screen excitation system and a screen circulation driving system. The screen circulation system is formed by assembling screen trays, a chain and chain wheels. The screen trays are hinged together through connecting shafts. The screen excitation system is composed of funnels, excitation motors and supporting springs, wherein the funnels are provided with groove-shaped guide rails. The funnels are arranged below the circulating screen trays on the screen circulation system. Rollers supporting the circulating screen trays roll in the groove-shaped guide rails. The screen circulation driving system is composed of a chain transmission motor and a speed reducer. The chain transmission motor transmits power to the driving chain wheel through the speed reducer, and the driving chain wheel drives the whole screen circulation system to move. The continuously-circulating screen vibrating sieve is simple in structure and convenient to manufacture; the screen can circulate continuously, the self-cleaning capacity is high, and the defects that the self-cleaning capacity of an existing drilling fluid vibrating screen is poor, screen blocking and screen burning are likely to occur, and the solid-phase liquid content after separation is high can be effectively overcome.

Description

A kind of continuous circulation screen cloth vibration sieve
Technical field
The present invention relates to the vibrosieve that a kind of continuous circulation screen cloth vibration sieve, particularly screen cloth continuously can be circulated, belongs to Oil drill equipment technical field.
Background technology
The operation principle of existing drilling fluid vibrating sieve be all by exciting force make sieve basket produce together with screen cloth circle, straight line, The oscillating movement of the forms such as ellipse, under effect of vibration, the solid phase of compass screen surface is conveyed from feeding mouth to discharging opening along compass screen surface, meanwhile, Liquid phase and particle diameter pass through screen cloth less than the solid phase of screen mesh size, so as to realize the separation of drilling fluid.Existing drilling fluid vibrating sieve row The well drilling detritus liquid content for going out up to more than 20%, well drilling detritus are stacked in well site, wherein there is the drilling fluid of various chemical substances Larger pollution is caused to environment, due to the containing large amount of liquid amount of well drilling detritus, cannot also be transported directly at drilling wastes concentration Reason station;Existing Vibration Screen basket screen cloth participates in vibration simultaneously, and required exciting force is big, and motor power consumption is big;Screen cloth is fixed with sieve basket Together, screen cloth self-cleaning ability is poor, screen blinding, sticking screen easily occurs, the disposal ability and separation efficiency of vibrosieve is all dropped significantly It is low.In order to overcome existing screen of vibration screen for well drill liquid self-cleaning ability poor, easily there is the shortcoming of screen blinding, sticking screen, CN200410081423, CN00223456, CN201510047718, CN201520068826 etc. propose a kind of sieve of drum type brake Net, its be arranged on sieve basket on, with sieve basket together with vibrate, while and rotate around own axes, the screen cloth of drum type brake is in bottom Shi Jin Row solid-liquid separation, realizes self-cleaning at top, but they have, and, mass of vibration more more complicated than existing Structure of Vibrating Screen be big, screen cloth The shortcomings of trouble, physical dimension are bigger, the detached screen area of participation is little is installed and changes, vibrosieve separation efficiency improves, But disposal ability is reduced, do not reach while improving the purpose of the disposal ability and separation efficiency of vibrosieve.For this purpose, spy proposes The continuous circulation screen cloth vibration sieve of the present invention.
The content of the invention
The invention aims to overcome prior art not enough, there is provided a kind of continuous circulation screen cloth vibration sieve, screen cloth energy Enough continuous circulations, and only screen cloth participates in the vibration sieve of vibration, to solve the screen cloth self-cleaning ability of existing drilling fluid vibrating sieve , easily there is screen blinding, sticking screen in difference, the shortcomings of the solid phase liquid content after separation is high.
For achieving the above object, this invention takes following technical scheme.
A kind of continuous circulation screen cloth vibration sieve of the invention, mainly by screen cloth blood circulation, screen cloth excitation system, screen cloth circulation Drive system is constituted.By the screen tray for installing screen cloth, chain, sprocket wheel are assembled the screen cloth blood circulation;Screen tray is by connection Together, connecting shaft outer surface is cased with axle sleeve to the mutual twisting of axle, and connecting shaft two ends are coordinated with carrier bar, sleeve and roller respectively, Both sides respectively constitute a chain, and chain is wound on two sprocket wheels of every side, forms a closed-loop structure;Sprocket shaft plays supporting wheel Effect, sprocket shaft two ends are fixed in frame by bearing, and whole screen cloth blood circulation is fixed in frame;Screen cloth swashs Vibrating system is made up of the funnel with channled rail, shock electric machine, supporting spring.Funnel is arranged on following in screen cloth blood circulation Under ring grizzly disk, and enough distances are formed between lower circulation screen tray, when preventing lower cycle sieve disc vibration, touch with funnel bottom Hit, funnel bottom is provided with discharge gate.The roller that the chain of screen tray is circulated in supporting is rolled in channled rail, the groove of channled rail Mouth is towards screen tray.A pair of model identical shock electric machines are symmetrically installed in funnel biside plate, motor barycenter is with funnel barycenter same In one perpendicular, two shock electric machines make synchronous backward revolution, and in each instantaneous position, centrifugal force component in the y-direction is always mutual Superimposed, component in the x-direction is always offset, therefore, single exciting force in the y-direction is formed, drives funnel to make y directions straight Linearly coupled.4 supporting springs are symmetrically mounted on funnel corner, and on spring stack, spring stack is fixed in frame supporting spring housing, And through the hole in spring bearer plate, spring bearer plate is fixed on funnel, so designs, funnel can be limited and moved in the x direction. When funnel vibrates, by spring bearer plate compression supporting spring.Supporting spring is gone back except providing in addition to the bearing-surface of the centre of oscillation to funnel Have important function to be exactly to realize the active vibration isolation of continuous circulation screen cloth vibration sieve, i.e., make as much as possible the vibration of funnel not to Frame is transmitted.Screen cloth circulates drive system by Chain conveyer motor, and decelerator composition, Chain conveyer motor slow down dynamic through decelerator Power passes to drive sprocket, realizes slowly running for drive sprocket, and drive sprocket drives whole screen cloth blood circulation motion.
The roller of continuous circulation screen cloth vibration sieve is rolled between channled rail inwall, and between channled rail inwall, height is firm A roller is allowed well in interior rolling, when realizing that funnel vibrates, roller can make same amplitude, same frequency vibration;Channled rail inwall Two ends rounding, it is to avoid when roller enters channled rail, roller is directly collided with right-angle side;Channled rail length just allows 4 Screen tray is moved in which, it is to avoid channled rail is long, and chain is tightened, and whole equipment action can not realize motion;Because incomplete Screen tray into channled rail is under Chain conveyer polygon effect, it is impossible to keep screen tray compass screen surface level, it may occur that vibrating direction angle In the vibration of -5 °~5 ° changes, in order to avoid the carrier bar at the roller two ends being assembled together with the screen tray is collided with guide rail, The width of roller inwall is less than roller length.
Continuously circulation screen cloth vibration sieve workflow is:Start Chain conveyer motor, make screen cloth blood circulation start to rotate, sieve After net motion stabilization, start shock electric machine, the screen cloth that upper circulation is clamped by channled rail during moving along a straight line with chain, The exciting force on the vertical direction on screen cloth is delivered to by menometrorrhagia bucket again, while moving along a straight line, up-down vibration is done again Motion.Because being twisted together by chain between screen cloth, the vibration of upper circulation screen cloth drives the screen cloth of lower circulation to make same frequency Vibration.The buffered case of drilling fluid returned from well head enters upper circulation screen cloth, under the conditions of suitable exciting force and chain speed, drilling well Liquid completes sieve in upper cyclic process, and into funnel, Jing is connected to the flexible pipe of funnel discharge gate and discharges.Close or larger than mesh The solid phase particles of diameter are left on screen cloth, with screen cloth around sprocket.Lower circulation screen cloth is not involved in sieving drilling fluid, works as screen cloth Into lower circulation, above screen cloth, it is changed into following, the solid phase particles stayed on screen cloth are poured out screen cloth, are stuck in the solid phase of mesh Grain is shaked out screen cloth under the dither of screen cloth.Screen cloth is gone successively to after in lower cyclic process, mesh is cleaned Circulation participates in sieving drilling fluid.
The screen cloth Renewal process of continuous circulation screen cloth vibration sieve:Rotating sprocket, moves to the screen tray for needing to change screen cloth Drive sprocket end, strikes the wedge of lower fixed grit, and screen cloth departs from screen tray because action of gravity, takes out screen cloth, and new screen cloth is filled On screen tray flange, screen cloth is pinned with handss, rotate backward sprocket wheel, treat that screen tray moves to the flat place of upper circulation water, load onto wedge simultaneously Strike tight, screen cloth is changed and completed.
It is an advantage of the current invention that:1st, after screen cloth often finishs a screening operation, mesh is once cleaned, and is shaken than conventional Dynamic sieve self-cleaning ability is higher;2nd, easily block when conventional vibration is sieved using ultra-fine screen cloth, continuous circulation screen cloth vibration sieve is because certainly Clean ability is strong, it is possible to use ultra-fine screen cloth, realizes ultra-fine mesh requirement;3rd, as the ginseng part that shakes is upper circulation screen cloth, mass of vibration Little, required exciting force is little, and electrical consumption is few;4th, overall structure is simple, easily manufactured, low cost.5th, screen cloth can be using rigidity Screen cloth, long service life.Screen cloth continuously can be circulated, and self-cleaning ability is strong, the screen cloth of the existing drilling fluid vibrating sieve of energy effectively solving Self-cleaning ability is poor, screen blinding, sticking screen easily occurs, the shortcomings of the solid phase liquid content after separation is high.
Description of the drawings
Fig. 1 is a kind of structural representation front view of continuous circulation screen cloth vibration sieve of the present invention.
Fig. 2 is the continuous circulation screen cloth vibration sieve structural representation left view of the present invention.
Fig. 3 is the channled rail three dimensional structure diagram of the present invention.
Fig. 4 is that the screen cloth of the present invention installs top view.
Fig. 5 is that the screen cloth of the present invention installs side view.
In figure, 1. baffle-box, 2. channled rail, 3. screen tray, 4. drive sprocket, 5. right shock electric machine, 6. supports spring, 7. Bearing, 8. frame, 9. decelerator, 10. Chain conveyer motor, 11. pedestals, 12. driven sprockets, 13. chains, 14. funnels, 15. bullets Spring pressing plate, 16. spring stacks, 17. screen clothes, 18. connecting shafts, 19. axle sleeves, 20. carrier bars, 21. rollers, 22. sleeves, 23. screen trays are convex Platform, 24. wedges, 25. sprocket shafts, 26 left shock electric machines, 27. channled rail inwalls, 28. discharge gates.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of continuous circulation screen cloth vibration sieve of the present invention is mainly circulated by screen cloth System, screen cloth excitation system, screen cloth circulation drive system composition.The screen cloth blood circulation is by the screen tray 3 for installing screen cloth, chain 13, drive sprocket 4, driven sprocket 12 are assembled;Screen tray 3 passes through 18 mutual twisting of connecting shaft together, connecting shaft outer surface Axle sleeve 19 is cased with, connecting shaft two ends are coordinated with carrier bar 20, sleeve 22 and roller 21 respectively, a chain 13 is respectively constituted in both sides, Chain 13 is wound on two sprocket wheels of every side, forms a closed-loop structure;Sprocket shaft 25 plays supporting wheel, sprocket shaft 25 Two ends are fixed in frame 8 by bearing 7, and whole screen cloth blood circulation is fixed in frame 8.Screen cloth excitation system is by band It is made up of the funnel 14 of channled rail 2, left shock electric machine 26, right shock electric machine 5, supporting spring 6.Funnel 14 is arranged on screen cloth and follows Under circulation screen tray 3 in loop systems, and enough distances are formed and the circulation screen tray of bottom between, prevent bottom cycle sieve disc vibration When, colliding with 14 bottom of funnel, 14 bottom of funnel is provided with discharge gate 28.The roller 21 of the chain 13 of screen tray is circulated in supporting Roll in channled rail 2, the notch of channled rail 2 is towards screen tray.Right shock electric machine 5 is arranged in the right plate of funnel 14 Centre, is symmetrically installed the left shock electric machine 26 of another same model, 5 constant speed of left shock electric machine 26 and right shock electric machine on the left of funnel 14 Reversely rotate, produce exciting force and offset in x directions, be superimposed through 14 barycenter of funnel in y directions, funnel 14 is realized in the y-direction Periodicity straight-line oscillation.Channled rail 2 is welded on funnel 14, clamps circulation screen tray 3 in chain type closed-loop structure, it is possible to achieve sieve While disk 3 moves along a straight line with chain 13, and periodic straight-line oscillation is done with funnel 14.Funnel 14 is by supporting spring 6 It is supported in frame 8, supporting spring 6 is symmetrically mounted at the corner of funnel 14, supporting spring 6 is enclosed within spring stack 16, spring Post 16 is welded in frame 8, and spring fastening 15 is welded on 14 side plate of funnel, it is possible to achieve funnel 14 only has the freedom in y directions Degree, i.e., funnel 14 can only be moved in y directions., except providing in addition to supporting to funnel 14, also one important function is just for supporting spring 6 It is the active vibration isolation for realizing continuous circulation screen cloth vibration sieve, i.e., the vibration of funnel 14 is not transmitted to frame 8 as much as possible.Screen cloth By Chain conveyer motor 10, decelerator 9 is constituted circulation drive system, and Chain conveyer motor 10 after the deceleration of decelerator 9 passes power Drive sprocket 4 is passed, realizes that slowly running for drive sprocket 4, Chain conveyer motor 10 and decelerator 9 are fixed in frame 8.
As shown in Figure 1, Figure 2, Figure 3 shows, channled rail inwall of the roller 21 of continuous circulation screen cloth vibration sieve in channled rail 2 Roll between 27, between channled rail inwall 27, height just allows a roller 21 in interior rolling, when realizing that funnel 14 vibrates, Roller 21 can make same amplitude, same frequency vibration;27 two ends rounding of channled rail inwall, it is to avoid when roller 21 enters guide rail 2, roller 21 are directly collided with right-angle side;2 length of channled rail just allows four screen trays 3 to move in which, it is to avoid 2 mistake of channled rail It is long, prevent motion of the screen tray 3 required for from realizing;Because not imitating in Chain conveyer polygon completely into the screen tray 3 of channled rail Should under, it is impossible to keep screen tray compass screen surface level, it may occur that vibrating direction angle -5 °~5 ° change vibrations, in order to avoid with the sieve The carrier bar 20 at 21 two ends of roller that disk is assembled together is collided with channled rail, and the width of the inwall of roller 21 should be slightly less than Roller length.
As Figure 1 and Figure 4, start Chain conveyer motor 10, rotating speed passes to drive sprocket 4, chain Jing after the deceleration of decelerator 9 Wheel 4 drives screen cloth blood circulation to rotate, after screen movement is stable, while start right shock electric machine 5, and left shock electric machine 26, Funnel 14 makees the straight-line oscillation of vertical direction under the exciting force action of the vertical direction that two motors are produced.Then it is upper to circulate The screen cloth that screen tray 3 is clamped by channled rail inwall 27 is while moving along a straight line with chain, and makees same frequency with funnel 14, shakes together The vibration of width.Because being linked together by connecting shaft 18 between screen disc 3, the vibration of upper circulation screen disc 3 can drive down and follow The screen disc 3 of ring makees the vibration of same frequency.The screen cloth that the buffered case 1 of drilling fluid returned from well head is entered in upper circulation screen tray 3 17, under suitable exciting force and chain speed conditioning, drilling fluid completes sieve in upper cyclic process, into funnel 14, Jing The flexible pipe of the discharge gate 28 being connected on funnel 14 is discharged.Screen cloth 17 is left on close or larger than the solid phase particles of mesh diameter On, with screen cloth 17 around sprocket.Lower circulation screen cloth 17 is not involved in sieving drilling fluid, when screen cloth 17 enters lower circulation, screen cloth 17 Above switch to gradually following, the solid phase particles stayed on screen cloth 17 are poured out screen cloth, are stuck in the solid phase particles of mesh in screen cloth Screen cloth is shaked out under 17 dither.In lower cyclic process, after 17 mesh of screen cloth is cleaned, go successively to screen tray 3 Upper circulation participates in sieving drilling fluid.
As shown in Figure 4, Figure 5,17 Renewal process of screen cloth of continuous circulation screen cloth vibration sieve is:Drive sprocket 4 is rotated, need The screen tray 3 changed by screen cloth 17 moves to 4 end of drive sprocket, strikes the wedge 24 of lower fixed grit 17, and screen cloth 17 is because weight Power is acted on, and departs from screen tray 3, takes out screen cloth 17, new screen cloth 17 is mounted on the flange 23 of screen tray 3, screen cloth 17 is pinned with handss, reversely Drive sprocket 4 is rotated, is treated that screen tray 3 moves to the flat place of upper circulation water, is loaded onto wedge 24 and strike tight, so as to complete screen cloth 17 more Change and complete.

Claims (3)

1. a kind of continuous circulation screen cloth vibration sieve, mainly circulates drive system by screen cloth blood circulation, screen cloth excitation system, screen cloth Composition, it is characterised in that:, by the screen tray (3) for installing screen cloth, chain (13), drive sprocket (4) are driven for the screen cloth blood circulation Sprocket wheel (12) is assembled;By connecting shaft (18) mutually twisting, together, connecting shaft outer surface is cased with axle sleeve to screen tray (3) (19), connecting shaft two ends are coordinated with carrier bar (20), sleeve (22) and roller (21) respectively, respectively constitute a chain in both sides (13), chain (13) is wound on two sprocket wheels of every side, forms a closed-loop structure;Sprocket shaft (25) plays the work of supporting wheel With sprocket shaft (25) two ends are fixed in frame (8) by bearing (7), and whole screen cloth blood circulation is fixed on frame (8) On;Screen cloth excitation system is by with channled rail(2)Funnel (14), left shock electric machine (26), right shock electric machine (5), supporting Spring (6) is constituted;Funnel (14) is arranged under the circulation screen tray (3) in screen cloth blood circulation, and with the circulation screen tray of bottom it Between form enough distances, when preventing bottom cycle sieve disc vibration, collide with funnel (14) bottom;Screen tray is circulated in supporting The roller (21) of chain (13) is rolled in channled rail (2), and the notch of channled rail (2) is towards screen tray;Right shock electric machine (5) Installed in the right plate central authorities of funnel (14), the left shock electric machine (26) of another same model on the left of funnel (14), is symmetrically installed; Left shock electric machine (26) and right shock electric machine (5) constant speed are reversely rotated, and are produced exciting force and are offset in x directions, and the superposition in y directions is worn Cross funnel(14)Barycenter, makes funnel (14) property performance period straight-line oscillation in the y-direction;Channled rail (2) is welded on funnel (14) On, clamp, it is possible to achieve while screen tray (3) moves along a straight line with chain (13), and Periodic straight-line oscillation is done with funnel (14);Funnel (14) is supported in frame (8) by supporting spring (6), supports spring (6) it is symmetrically mounted at the corner of funnel (14);Supporting spring (6) is enclosed within spring stack (16), and spring stack (16) is welded on machine On frame (8);Spring fastening (15) is welded on funnel (14) side plate, it is possible to achieve funnel (14) only has the degree of freedom in y directions, i.e., Funnel (14) can only be moved in y directions;Screen cloth circulates drive system by Chain conveyer motor (10), decelerator (9) composition, Chain conveyer Motor (10) passes to drive sprocket (4) power after decelerator (9) deceleration, realizes slowly running for drive sprocket (4), Chain conveyer motor (10) and decelerator (9) are fixed in frame (8).
2. one kind according to claim 1 is continuous circulates screen cloth vibration sieve, it is characterised in that:Roller (21) is in channled rail (2) roll between channled rail inwall (27), between channled rail inwall (27), height just allows a roller (21) to exist Interior rolling, when realizing that funnel (14) vibrates, roller (21) can make same amplitude, same frequency vibration;Channled rail inwall (27) two ends Rounding, it is to avoid when roller (21) is into channled rail (2), roller (21) are directly collided with right-angle side;Channled rail (2) length is firm Four screen trays (3) are allowed well to move in which, it is to avoid channled rail (2) is long, the fortune required for making screen tray (3) realize It is dynamic.
3. one kind according to claim 1 is continuous circulates screen cloth vibration sieve, it is characterised in that:Funnel (14) bottom is provided with row Material mouth (28);Except providing in addition to supporting to funnel (14), also one important function is exactly to realize continuous circulation for supporting spring (6) The active vibration isolation of screen cloth vibration sieve, i.e., make the vibration of funnel (14) not transmit to frame (8) as much as possible.
CN201510768423.2A 2015-11-12 2015-11-12 Continuously-circulating screen vibrating sieve Active CN105436067B (en)

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CN108672253A (en) * 2018-05-15 2018-10-19 段先平 A kind of coal separation equipment that industry coal uses
CN110898963B (en) * 2019-11-30 2021-05-18 桐乡市亚都混凝土有限公司 Recycled concrete aggregate screening system
CN111468398A (en) * 2020-05-11 2020-07-31 江苏振强机械科技股份有限公司 Novel efficient linear vibrating screen device

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