CN103817075B - Novel hydraulic classification two-section arc screen - Google Patents

Novel hydraulic classification two-section arc screen Download PDF

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Publication number
CN103817075B
CN103817075B CN201410067966.7A CN201410067966A CN103817075B CN 103817075 B CN103817075 B CN 103817075B CN 201410067966 A CN201410067966 A CN 201410067966A CN 103817075 B CN103817075 B CN 103817075B
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China
Prior art keywords
sieve
section
compass screen
screen surface
sections
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CN201410067966.7A
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CN103817075A (en
Inventor
李延锋
朱荣涛
张文军
贺长营
李东泽
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

The invention discloses a novel hydraulic classification two-section sieve bend, which comprises a sieve box, wherein a feeding distribution box is arranged at the upper part of the sieve box, a sieve bend surface is arranged in the sieve box, the sieve bend surface is respectively provided with a section of sieve bend surface and a section of sieve bend surface from top to bottom, the upper end of the section of sieve bend surface is connected with a discharge port of the feeding distribution box, a middle material collecting tank is arranged between the lower end of the section of sieve bend surface and the upper end of the section of sieve bend surface, a conical perforated sieve plate is arranged at the bottom of the middle material collecting tank, a water flow replenishing pipe is connected below the conical perforated sieve plate, and a bottom flow discharge. According to the sieve-surface-mounted sieve disclosed by the invention, the sieve surface is divided into an upper section and a lower section, the intermediate material collecting tank is additionally arranged between the two sections of sieve surfaces, and ascending water flow with a certain flow speed is provided in the intermediate material collecting tank, so that the defect that the transportation is influenced because the moisture of the material is rapidly cut through the sieve in the traditional sieve-shaped sieve is overcome, the retained material on the sieve surface can be timely collected, the material accumulation phenomenon is prevented, and the effective utilization rate of the sieve surface is ensured.

Description

A kind of novel hydropower classification two sections of sieve bends
Technical field
The present invention relates to technical field of mineral processing equipment, especially a kind of disposal ability is large, screening efficiency is high, rely on ascending current to prevent the two-period form Novel screen separating device of solid accumulation.
Background technology
With compass screen surface with holes, the operation that mixed materials different for granule size is divided into various granularity level is called screening.Screening operation is widely used in the departments such as ore dressing, coal separation, building, chemical industry, light industry.According to version and the forms of motion of compass screen surface, sieving machine conventional both at home and abroad at present can be divided into following several types: gravity flow screen, rotary screen, vibratory sieve, screen centrifuge, flip flop screen etc.Wherein, sieve bend is the one of gravity flow screen, its simple structure, simple installation, the life-span is long, especially not consumption of power, there is no moving component, equipment cost and use cost low, be widely used in screening operation, be mainly used in the material dewatering, desliming, de-mediated, drying slime etc. of coal, metallurgy, chemical industry.Sieve bend compass screen surface is in the arc-shaped along oversize flow path direction, grating is vertical with oversize flow path direction, particular design and the wire rolled on compass screen surface, the direction contrary with Flow of Goods and Materials has sharp keen cutting edge, and these sharp keen cutting edges are conducive to cutting moisture from the material that compass screen surface flows.Pan feeding ore pulp is tangentially delivered on compass screen surface through current divider box, slip forms a flat feed pulp layer, tightly be attached on compass screen surface and circle, feed pulp layer is cut by the arris sieving seam, centrifugal force and send slurry pressure acting in conjunction under, make fine component and water become undersized product through after feed pulp layer and sieve seam thoroughly sieve.
But, there is following problem in conventional arched sieve: can not be uniformly distributed when material is given to sieve bottom current divider box, and due to compass screen surface the initial segment dissection obvious, water in material sieves rapidly thoroughly, the transportability decline of leftover materials, cause solid accumulation phenomenon on compass screen surface, and then cause compass screen surface to block, have a strong impact on screening effect.
Summary of the invention
Goal of the invention: the problem that the material that the object of the invention is to overcome the existence of conventional arched sieve is easily piled up, provides the Novel screen separating device that a kind of disposal ability is large, screening efficiency is high, dependence ascending current prevents solid accumulation.
To achieve these goals, present invention employs following technical scheme:
A kind of novel hydropower classification two sections of sieve bends, comprise screen box, screen box top arranges feed distributor box, screen box inside arranges arc compass screen surface, it is characterized in that: described arc compass screen surface distinguishes one section of arc compass screen surface and two sections of arc compass screen surfaces from top to bottom, one section of arc compass screen surface upper end is connected with feed distributor box discharging opening, between one section of arc compass screen surface lower end and two sections of arc compass screen surface upper ends, intermediate material feeder is set, taper slotted plate is set bottom intermediate material feeder, connect current below taper slotted plate and add pipe, taper slotted plate center arranges underflow blow-off valve, underflow blow-off valve is connected with discharge controller.
In the present invention, preferably, described intermediate material feeder notch arranges downflow weir near two sections of arc compass screen surface sides.
In the present invention, preferably, described one section of arc compass screen surface lower end is connected with intermediate material feeder by blind plate, and blind plate vertical height is a little more than downflow weir.
In the present invention, preferably, described current are added on pipe and are arranged flow control valve.
The present invention compared with prior art has following effect:
(1) compass screen surface is divided into two sections by the present invention, and intermediate material feeder is added between two sections of compass screen surfaces, the ascending current of certain flow rate is provided in intermediate material feeder, overcome conventional arched sieve affects transport shortcoming because material moisture is thoroughly sieved by cutting rapidly, compass screen surface retentate material can be collected in time, prevent buildup phenomenon, ensure compass screen surface effective rate of utilization, ascending current had both played transported material effect, make again material in groove that loose layering occurs, isolate coarse-grained material in time, effectively alleviate the wearing and tearing of hypomere compass screen surface, and avoid coarse-grained material repeat screening, improve screening efficiency,
(2) intermediate material feeder provides the ascending current of adjustable flow velocity, material and current form relative motion, this invention is made to also have certain sorting except having sieve classification effect, reduce the impact of material density difference on screening process, reduce tramp content, improve screening effect;
(3) intermediate material feeder notch arranges downflow weir near hypomere arc compass screen surface side, epimere arc compass screen surface lower end is connected with intermediate material feeder by blind plate, blind plate vertical height is a little more than downflow weir, downflow weir can reduce the flow velocity of material on hypomere compass screen surface, increase material run duration, improve screening effect, avoid hypomere screening to cause because material flow is too fast simultaneously and alter material, improve discharging effect, blind plate can prevent material generation backflow phenomena, ensures that overflow all enters hypomere arc compass screen surface;
(4) compass screen surface is divided into two sections by the present invention, and arranges material collection groove and downflow weir between two sections of compass screen surfaces, suitably can increase screen angle, both improve productivity ratio, turn reduce sieve floor space, Appropriate application hall space, be convenient to apparatus arrangement and maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A direction view in Fig. 1.
In figure: 1-pan feeding conduit, 2-feed distributor box, 3-screen box, 4-mono-section of arc compass screen surface, 5-bis-sections of arc compass screen surfaces, 6-intermediate material feeder, 7-downflow weir, 8-current add pipe, 9-flow control valve, 10-taper slotted plate, 11-blind plate, 12-discharge controller, 13-underflow blow-off valve, 14-support.
Detailed description of the invention:
Below in conjunction with accompanying drawing the present invention done and further explain.
As illustrated in fig. 1 and 2, novel hydropower classification of the present invention two sections of sieve bends comprise feed distributor box 2, screen box 3 and support 14, and screen box 3 is installed on the support 14, and screen box 3 top arranges feed distributor box 2, and feed distributor box 2 charging aperture is connected with pan feeding conduit 1.Screen box 3 inside arranges arc compass screen surface, arc compass screen surface distinguishes one section of arc compass screen surface 4 and two sections of arc compass screen surfaces 5 from top to bottom, one section of arc compass screen surface 4 upper end is connected with feed distributor box 2 discharging opening, arranges intermediate material feeder 6 between one section of arc compass screen surface 4 lower end and two sections of arc compass screen surface 5 upper ends.Intermediate material feeder 6 notch arranges downflow weir 7 near two sections of arc compass screen surface 5 sides, and one section of arc compass screen surface 4 lower end is connected with intermediate material feeder 6 by blind plate 11, and blind plate 11 vertical height is a little more than downflow weir 7.Taper slotted plate 10 is set bottom intermediate material feeder 6, connect current below taper slotted plate 10 and add pipe 8, taper slotted plate 10 center arranges underflow blow-off valve 13, underflow blow-off valve 13 valve body is inverted-cone shape, cone angle is 30 ° ~ 60 °, underflow blow-off valve 13 is connected with discharge controller 12, is controlled the switch of underflow blow-off valve 13 by discharge controller 12, realizes underflow discharge.
The course of work of the present invention: the tangential direction that the material fed from pan feeding conduit 1 arcuately sieves one section of arc compass screen surface 4 via feed distributor box 2 with certain speed feeds, centrifugal force is produced when flowing through sieve bend one section of arc compass screen surface 4, cutting movement is done by each Edge of screen bar under the acting in conjunction of centrifugal force, frictional force and gravity, fine particles a large amount of in material and water fast strikethrough grating become screenings, one section of arc compass screen surface 4 lower end, material sieves and transportability decline in a large number thoroughly due to moisture, is collected in time by intermediate material feeder 6, add by current the current that pipe 8 passes into and upwards enter intermediate material feeder 6 through taper slotted plate 10, and ascending current is formed in intermediate material feeder 6, loose layering is there is in the material collected in intermediate material feeder 6 under the effect of ascending current, material containing fine component rises with current and crosses downflow weir 7 and enters two sections of arc compass screen surfaces 5 continuation screenings, blind plate 11 can prevent material generation backflow phenomena, ensure that overflow all enters second segment arc compass screen surface 5, two sections of arc compass screen surface 5 undersize materials and one section of arc compass screen surface 4 undersize material are merged into as final undersized product, coarse grain component continues decline and discharged by bottom discharging mouth 13, then product on finishing screen is merged into as with two sections of arc compass screen surface 5 on-the-sieve materials, discharge controller 12 controls underflow blow-off valve 13 discharge velocity, and then ensure two sections of arc compass screen surface 5 pan feeding stability.
Utilize sieve bend device of the present invention, can effectively prevent material at the packing phenomenon of compass screen surface, improve the effective rate of utilization of compass screen surface, improve screening efficiency, ensure screening effect.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (4)

1. a novel hydropower classification two sections of sieve bends, comprise screen box (3), screen box (3) top arranges feed distributor box (2), screen box (3) inside arranges arc compass screen surface, it is characterized in that: described arc compass screen surface is divided into one section of arc compass screen surface (4) and two sections of arc compass screen surfaces (5) from top to bottom, one section of arc compass screen surface (4) upper end is connected with feed distributor box (2) discharging opening, between one section of arc compass screen surface (4) lower end and two sections of arc compass screen surface (5) upper ends, intermediate material feeder (6) is set, intermediate material feeder (6) bottom arranges taper slotted plate (10), taper slotted plate (10) below connects current and adds pipe (8), taper slotted plate (10) center arranges underflow blow-off valve (13), underflow blow-off valve (13) is connected with discharge controller (12).
2. a kind of novel hydropower classification according to claim 1 two sections of sieve bends, is characterized in that: described intermediate material feeder (6) notch arranges downflow weir (7) near two sections of arc compass screen surface (5) sides.
3. a kind of novel hydropower classification according to claim 2 two sections of sieve bends, it is characterized in that: described one section of arc compass screen surface (4) lower end is connected with intermediate material feeder (6) by blind plate (11), and blind plate (11) vertical height is a little more than downflow weir (7).
4. a kind of novel hydropower classification according to claim 1 two sections of sieve bends, is characterized in that: described current are added on pipe (8) and arranged flow control valve (9).
CN201410067966.7A 2014-02-27 2014-02-27 Novel hydraulic classification two-section arc screen Expired - Fee Related CN103817075B (en)

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CN103817075B true CN103817075B (en) 2015-08-19

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JOP20190082A1 (en) 2016-10-14 2019-04-14 Dirrick Corp Apparatus , methods , and systems for vibratory screening
US11052427B2 (en) 2016-10-14 2021-07-06 Derrick Corporation Apparatuses, methods, and systems for vibratory screening
US11806755B2 (en) 2016-10-14 2023-11-07 Derrick Corporation Apparatuses, methods, and systems for vibratory screening
US11185801B2 (en) 2016-10-14 2021-11-30 Derrick Corporation Apparatuses, methods, and systems for vibratory screening

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CN2710767Y (en) * 2004-04-09 2005-07-20 张永胜 Vibration arc shaped sieve
CN201898789U (en) * 2010-11-22 2011-07-20 中国水产科学研究院渔业机械仪器研究所 Arc solid-liquid separation screen filtering pond for water treatment
CN203140182U (en) * 2013-03-15 2013-08-21 四川川煤华荣能源股份有限公司精煤分公司 Fine and coarse coal slime recovery device
CN203183789U (en) * 2013-05-02 2013-09-11 姜汉平 Solid-liquid separation device
CN203750832U (en) * 2014-02-27 2014-08-06 中国矿业大学 Novel hydraulic classification two-section arc screen

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