CN2191037Y

CN2191037Y - Novel double-screen vertical vibrating centrifuge

Info

Publication number: CN2191037Y
Application number: CN 94210721
Authority: CN
Inventors: 魏建功; 徐兵
Original assignee: LUOYANG MINE MACHINERY ENGINEE
Current assignee: LUOYANG MINE MACHINERY ENGINEE
Priority date: 1994-05-04
Filing date: 1994-05-04
Publication date: 1995-03-08
Anticipated expiration: 2004-05-04

Abstract

The utility model relates to a continuous centrifugal dehydration equipment, complete machine adopt the screen cloth of two stairstepping nested formula installations, have formed two drainage chambers in the machine, and the material receives screen cloth surface centrifugal force and power axial vibration effort continuous movement and can obtain loose and rearrangement under the operating mode condition, has increaseed dewatering distance and time, compares with single screen centrifuge and has good dewatering performance, mainly is applied to the last cleaned coal dehydration of 13 ~ 0.5 mm. The whole machine has compact structure, reduced height and obviously improved dehydration effect.

Description

Vertical vibration centrifuger with double screen meshes

The utility model relates to a kind of dehydration equipment, is mainly used in the dehydration of 13～0.5mm fine cleaned coal and goes up use, is a kind of inside and outside nested stepped vertical vibrating centrifuge of screen cloth.

At present, in 13～0.5mm cleaned coal dehydration equipment, what the most generally use is the vibrating centrifuge of single screen cloth, the screen cloth of this centrifuge has two kinds of motions, both rotated, and did axial vibration again, the moisture fine cleaned coal that enters screen cloth relies on the centrifugal action that rotatablely moves and produce at the screen cloth inner surface, make moisture content see through the screen cloth slit and be thrown out of, reach the purpose that moisture content separates with fine cleaned coal; The axial vibration effect of screen cloth is to make material do axially-movable along screen surface, reaches the purpose of continuous pulp discharge, and material helps to clear up screen surface in the screen surface jitter motion, makes easier the leaching of institute's water content.But single screen cloth vibrating centrifuge, because material is shorter at the screen surface move distance, material is shorter at the effective dewatering time of screen surface, costs and poor dehydration results.And the approach that improves the centrifuge dewatering effect is to increase centrifugal intensity nothing more than one, this will be limit by designing institute, because when the major parameter of a desk centrifuge and structure were determined, its centrifugal intensity was also just fixed, then the screen cloth wearing and tearing are accelerated, the material crushing phenomenon is serious to improve centrifugal intensity, again many power consumptions source; The 2nd, prolong the dehydration distance, this need increase the screen cloth height, just is subjected to the restriction of centrifuge structure size and parts strength of materials aspect simultaneously, thereby all not too desirable.

Task of the present utility model provides a kind of novel two screen cloth vertical vibrating centrifugal machines, and it can improve the dewatering of fine cleaned coal.

For finishing above-mentioned task, the technical scheme that the utility model is taked is: single screen cloth in the vibrating centrifuge of being made up of line shaft, back taper screen cloth, round pallet, feeding pipe, annular outer cover body and loam cake that will generally use at present is arranged to have the stairstepping of step; Add a positive taper screen cloth that has a stairstepping step at least between screen cloth and shell body, the top of this screen cloth is settled an annular collector and is linked together with this screen cloth, make it and the annular outer cover body between form a hydroecium; Between two screen clothes, also be equipped with an annular inner housing, an annular bearing body is set under original supporting plate, allow the upper end of inner housing link to each other, and the lower end is fixed on the supporting body, makes it to form another hydroecium with original screen cloth upper end.

Two hydroeciums are communicated with, and have and stretch out centrifugal extra-organismal drainpipe and communicate with hydroecium.The bottom of set annular bearing body has some along circumference radially-arranged interval rib and space, so that material that took off water and the water of deviating from are discharged respectively.

The utility model is compared with existing single screen cloth vibrating centrifuge and is had the following advantages:

1, adopt two screen cloth nesting type structures, both made the machine height of disembarking reduce, make full use of structure space, strengthened effective dehydration distance again, twice dehydration makes these facility that good dewatering be arranged.

2, two screen clothes adopt stairsteppings, make the material that moves to each staircase areas because of vibration obtain repeatedly loose and rearrange, thereby the adhesion deposition resistance when moisture content is by screen cloth in the centrifugal dehydration process reduces, and help dehydration.

3, material is outside interior screen cloth overflow impelling enters during screen cloth, also obtains once loose and rearranges, and dehydration is become easily and fast, improved dehydrating effect.

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

Fig. 1 is the cross-sectional view of novel pair of screen cloth vertical vibrating centrifugal machine.

Fig. 2 is the vertical view of annular bearing body.

In Fig. 1, screen cloth 1 is made into the back taper with step 13, the round pallet 8 under it is fixedlyed connected with line shaft 12, is provided with under this supporting plate to connect an annular bearing body 9, supports newly-increased screen cloth 2 and annular inner housing 3 so that put in the above.The loam cake 5 of centrifuge is connected with annular outer cover body 11 and is supporting feeding pipe 4.Between shell body 11 and interior screen cloth 1, establish a positive taper screen cloth 2, the stairstepping that this screen making becomes to have step 14,15 two-stages, its upper end links to each other with the annular collector 6 that is provided with, and the lower end is propped up and is connected on the supporting body 9, has formed second hydroecium 17 like this between screen cloth 2 and shell body 11.Also be provided with an annular inner housing 3 between screen cloth 2 and screen cloth 1, its upper end links to each other with screen cloth 1, and the lower end is fixed on the supporting body 9, has formed first hydroecium 16 between screen cloth 1, supporting body 9 and the inner housing 3.Hydroecium the 16, the 17th is communicated with, and stretches out centrifugal extra-organismal drainpipe 7 and communicates with it.

The bottom of annular bearing body 9 is made into to have somely sees accompanying drawing 2 along the radially-arranged interval of circumference rib 10 and hole 23 and hole 24, discharges in order to the water of first hydroecium 16 and the coal of screen cloth 2 inner surfaces.

Under the working condition, line shaft 12 had not only rotated but also had done the vibration of vertical direction, and it is being with supporting body 9 to move with two screen clothes, promptly was rotated acceleration after the material that enters from feeder sleeve 4 falls into screen cloth 1.Under centrifugal action, moisture content in the material and feed separation and the slit by screen cloth 1 enter first hydroecium 16, are dewatered in advance; Material is subjected to centrifugal force and axial vibration active force, inner surface along screen cloth 1 moves up, obtain once loose at ladder 13 places and rearrange, after 18,19 two sections of screen cloth 1 pre-dehydrations, it is interior and projected the inner surface of screen cloth 2 by this gatherer that material enters the annular collector 6 on outer screen cloth 2 tops from the top perimeter overflow impelling of screen cloth 1.(top of outer screen cloth 2 and the connection place of annular collector 6 should provide enough spaces during making, so that material distributes equably) because screen cloth 2 is positive tapers, the loose and material arranged of getting back once moves down and continues along the inner surface of screen cloth 2 and dewaters under centrifugal action.Material was obtaining rearranging with loose through the two-stage step of screen cloth 2 in 14,15 o'clock once more, several times loose and rearranging just reduced the material sedimentary deposit to moisture content by the time resistance, dehydration is become easily and fast.20,21,22 3 sections the water of deviating from through screen cloth 2 enters into second hydroecium 17 from the slit of net.The bottom of first hydroecium 16 is bottoms of annular bearing body 9, because the bottom has rib 10 and space 23 at interval, water that flows down like this and the water that flows down from second hydroecium 17 are together from the drainpipe 7 that is communicated with them outside the discharge centrifuge, and the material after the dehydration is outside hole 24 discharge centrifuges of supporting body 9 from the passage bottom that screen cloth 2 and annular inner housing 3 form then.

The motion process of material in the novel centrifugal machine is a continuous dehydration process, because the effect of two screen clothes, and strengthened dehydration distance and time, so this utility model has good dewatering.

Claims

1, a kind of novel pair of screen cloth vertical vibrating centrifugal machine, form by electronic mechanical axis (12), back taper screen cloth (1), round pallet (8), feeding pipe (4), annular outer cover body (11) and loam cake (5), loam cake (5) is connected with annular outer cover body (11) and supports feeding pipe (4), round pallet (8) is connected with line shaft (12), place screen cloth (1) on it, it is characterized in that:

1), back taper screen cloth (1) has a step-like step (13);

2), between screen cloth (1) and annular outer cover body (11), a positive taper screen cloth (2) is set, is provided with an annular collector (6) and is connected, can form second hydroecium (17) between screen cloth (2) and annular outer cover body (11) with screen cloth (2) at the napex of screen cloth (2);

3) between screen cloth (1) and screen cloth (2), also has an annular inner housing (3), be provided with under round pallet (8) and be connected with annular bearing body (9), the upper end of this inner housing links to each other with screen cloth (1) upper end, the lower end is fixed on supporting body (9) to form first hydroecium (16).

2, novel pair of screen cloth vertical vibrating centrifugal machine according to claim 1 is characterized in that: positive taper screen cloth (2) has a stairstepping step (14) at least.

3, novel pair of screen cloth vertical vibrating centrifugal machine according to claim 2 is characterized in that: the bottom of annular bearing body (9) has some along the radially-arranged interval of circumference rib (10) and space (23,24).

4, novel pair of screen cloth vertical vibrating centrifugal machine according to claim 1 is characterized in that: first hydroecium (16) and second hydroecium (17) are communicated with, and have and stretch out extra-organismal drainpipe (7) and two chambers communicate.