CN104259090A - Calcined gypsum rotary screen and screening system - Google Patents

Calcined gypsum rotary screen and screening system Download PDF

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Publication number
CN104259090A
CN104259090A CN201410476378.9A CN201410476378A CN104259090A CN 104259090 A CN104259090 A CN 104259090A CN 201410476378 A CN201410476378 A CN 201410476378A CN 104259090 A CN104259090 A CN 104259090A
Authority
CN
China
Prior art keywords
screen drum
siofter
roto
slag
paris
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410476378.9A
Other languages
Chinese (zh)
Inventor
何雷
刘利龙
朱冬冬
陈振伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUAINAN BEIXIN BUILDING MATERIAL Co Ltd
Beijing New Building Material Group Co Ltd
Original Assignee
HUAINAN BEIXIN BUILDING MATERIAL Co Ltd
Beijing New Building Material Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUAINAN BEIXIN BUILDING MATERIAL Co Ltd, Beijing New Building Material Group Co Ltd filed Critical HUAINAN BEIXIN BUILDING MATERIAL Co Ltd
Priority to CN201410476378.9A priority Critical patent/CN104259090A/en
Publication of CN104259090A publication Critical patent/CN104259090A/en
Pending legal-status Critical Current

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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
    • B07B1/18Drum screens
    • B07B1/22Revolving drums
    • 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

Abstract

The invention provides a calcined gypsum rotary screen and screening system. The rotary screen comprises at least one shell and a rotary screen drum which is arranged in the shell, wherein the shell is provided with a feed port and slag discharge opening; a discharge port is formed in the bottom of the shell and is positioned between the feed port and the slag discharge opening; the rotary screen drum is frustum-shaped; the feed port is positioned in the top of the shell and is close to a small-aperture end of the rotary screen drum; the slag discharge opening is positioned in the bottom of the shell and is close to a large-aperture end of the rotary screen drum. By changing the shape of the rotary screen drum, more calcined gypsum settles down before reaching the tail end of the rotary screen drum by using the taper of the frustum-shaped rotary screen drum and enters a discharge conveyer through the discharge port to reduce the discharge of dust at the slag discharge opening; impurities settle down at the tail end of the rotary screen drum and are directly discharged through the slag discharge opening, so that the separation rate of the calcined gypsum and the impurities is improved, the discharge of the impurities is facilitated, the blockage in the rotary screen is reduced, and the stability of calcining is improved.

Description

A kind of plaster of paris material roto-siofter and screening system
Technical field
The present invention relates to plasterboard technology of preparing, particularly relate to a kind of plaster of paris material roto-siofter and screening system, belong to plaster of paris material screen optional equipment field.
Background technology
The impurity such as small stone and paper scrap in who knows mainly screens out by the screening process of plaster of paris material, as shown in Figure 1, arrow in Fig. 1 is the throughput direction of plaster of paris material, existing plaster of paris material screening system comprises feeding conveyor 2, roto-siofter 3 and outfeed belt conveyor 4, plaster of paris material enters feeding conveyor 2 through the machine for zipper 1 of a upper operation, roto-siofter charging aperture 31 is entered after feeding conveyor outlet and lattice wheel, after roto-siofter 3 screens, major part plaster of paris material enters outfeed belt conveyor 4 through roto-siofter discharging opening 32, finally enter bucket and carry 5, to wait to enter next treatment process, the impurity such as part plaster of paris material and paper scrap are discharged through roto-siofter slag-drip opening 33, existing roto-siofter screen drum 34 adopts cylindrical design, be unfavorable for the foreign material such as paper scrap and being separated of who knows, the foreign material such as the paper scrap contained in grog can not effectively be got rid of, often cause the blocking of roto-siofter inside, have a strong impact on and cooked stability, and slag-drip opening often be who knows and emerged, waste be who knows and contaminated environment.
Summary of the invention
The invention provides a kind of plaster of paris material roto-siofter and screening system, for overcoming defect of the prior art, be convenient to the foreign material such as paper scrap and being separated of who knows, be conducive to the discharge of foreign material, reduce the blocking of roto-siofter inside, improve the stability cooked, and avoid the waste who knows in a large number, also greatly reduce and who knows the pollution of dust to environment.
The invention provides a kind of plaster of paris material roto-siofter, at least comprise housing and be arranged on the revolution screen drum in described housing, described housing has charging aperture and slag-drip opening, described housing bottom is provided with discharging opening, and described discharging opening is between described charging aperture and slag-drip opening;
Described revolution screen drum is taper type;
Described charging aperture is positioned at case top, and the small-caliber end of close described revolution screen drum;
Described slag-drip opening is positioned at described housing bottom, and near described revolution screen drum heavy caliber end.
Wherein:
The cone-apex angle of described revolution screen drum is between 3 ° ~ 4 °.
Preferably:
The cone-apex angle of described revolution screen drum is 3.5 °.
Wherein:
Described slag-drip opening is positioned in the central axial direction of described revolution screen drum, and and in 70 ° ~ 80 ° angles between described revolution screen drum cross section.
Preferably:
Angle between described slag-drip opening and described revolution screen drum cross section is 75 °.
Wherein:
Described housing is provided with dust collection cover, the pipeline communication of described dust collection cover and dust collection device.
Further:
Be provided with striker plate between described revolution screen drum and housing, described striker plate is fixed on described inner walls, between described discharging opening and slag-drip opening, and near described slag-drip opening place.
In above-described embodiment:
Described revolution screen drum heavy caliber end is provided with blocking material ring, and the outer rim of described blocking material ring is fixed on described revolution inboard wall of riddle drum.
The present invention also provides a kind of plaster of paris material screening system, comprises feeding conveyor, roto-siofter and outfeed belt conveyor, and described roto-siofter is above-mentioned plaster of paris material roto-siofter.
Plaster of paris material roto-siofter provided by the invention and screening system, by changing the shape of revolution screen drum, taper type is utilized to turn round the tapering of screen drum self, more grog was settled down before not arriving revolution screen drum end (i.e. heavy caliber end), to enter outfeed belt conveyor by discharging opening, reduce the discharge of slag-drip opening plaster of paris dust, what reduce slag-drip opening who knows the pollution of dust to environment; Simultaneously, plaster of paris material is through roto-siofter, be entrained in the impurity such as paper scrap wherein then to settle down in arrival revolution screen drum end (i.e. heavy caliber end), impurity is directly discharged by slag-drip opening, improve the separation rate of the impurity such as grog and paper scrap, be conducive to the discharge of foreign material, decrease the blocking of roto-siofter inside, improve the stability cooked.
Accompanying drawing explanation
Fig. 1 is the structural representation of plaster of paris material screening system in prior art;
The structural representation of the plaster of paris material screening system that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the plaster of paris material roto-siofter that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is along A-A to sectional view in Fig. 3.
Detailed description of the invention
As shown in Figure 3, Figure 4, the embodiment of the present invention provides a kind of plaster of paris material roto-siofter, the revolution screen drum 34 at least comprising housing 30 and be arranged in housing 30, housing 30 have charging aperture 31 and slag-drip opening 33, be provided with discharging opening 32 bottom housing 30, discharging opening 32 is between charging aperture 31 and slag-drip opening 33; Revolution screen drum 34 is in taper type; Charging aperture 31 is positioned at housing 30 top, and near turning round the small-caliber end 34a of screen drum; Slag-drip opening 33 is positioned at bottom housing 30, and near revolution screen drum heavy caliber end 34b.Housing 30 cross section squarely, runs through revolution screen drum 34 axle center place and is provided with rotating shaft 35, and rotating shaft 35 drives revolution screen drum 34 to rotate in housing 30 under the driving of motor 36.
The sieve material process of roto-siofter is as follows, it is inner that grog enters revolution screen drum 34 through charging aperture 31, revolution screen drum 34 rotates, the grog of its inside is thrown out of outside revolution screen drum 34 under the influence of centrifugal force, the grog sieved enters outfeed belt conveyor through discharging opening 32, it is inner that impurity stays revolution screen drum 34, finally discharge from slag-drip opening 33, plaster of paris material roto-siofter provided by the invention, the shape of revolution screen drum is revised as taper type by cylindrical shape, utilize the tapering of revolution screen drum self, more grog was settled down before not arriving revolution screen drum end (i.e. heavy caliber end), to enter outfeed belt conveyor by discharging opening, reduce the discharge of slag-drip opening plaster of paris dust, what reduce slag-drip opening who knows the pollution of dust to environment, simultaneously, plaster of paris material is through roto-siofter, be entrained in the impurity such as paper scrap wherein then to settle down in arrival revolution screen drum end (i.e. heavy caliber end), impurity is directly discharged by slag-drip opening, improve the separation rate of the impurity such as grog and paper scrap, be conducive to the discharge of foreign material, decrease the blocking of roto-siofter inside, improve the stability cooked.
In above-described embodiment, the cone-apex angle α of revolution screen drum is between 3 ° ~ 4 °.The tapering of revolution screen drum should not be too large, otherwise the material of inside cannot reach discharging opening 32 place, and the cone-apex angle of revolution screen drum is preferably 3.5 °, and the separation rate of the impurity such as grog and paper scrap is best.In Fig. 3, the length of revolution screen drum 34 is revised as 4.2 meters by original 2.7 meters, large mouth diameter is 1.3 meters, osculum diameter is 1.05 meters, add the effective length of revolution screen drum 34, make grog in the gyration time more progress and impel more grog to settle down before not arriving screen drum end of revolution screen drum 34.
In order to reduce the dust stratification dead angle at deslagging place, slag-drip opening 33 be positioned at revolution screen drum 34 central axial direction on, and and revolution screen drum 34 cross section between angle β between 70 ° ~ 80 °.This angle is conducive to the direct discharge of impurity, decreases the accumulation dead angle of impurity and grog, and the angle β between slag-drip opening and revolution screen drum cross section is preferably 75 °, and slag discharge efficiency is the highest.
As shown in Figure 3, Figure 4, in order to reduce grog emerging from roto-siofter slag-drip opening 33 further, housing 30 is provided with dust collection cover 37, the pipeline communication of dust collection cover 37 and dust collection device.In the clinker dust suction dust collection device utilizing the negative pressure of dust collection device inside to be suspended roto-siofter inside, thus reduce roto-siofter slag-drip opening 33 go out dirt, purified environment.
As shown in Figure 4, be provided with striker plate 38 between revolution screen drum 34 and housing 30, striker plate 38 is fixed on housing 30 inwall, between roto-siofter discharging opening 32 and roto-siofter slag-drip opening 33, and near roto-siofter slag-drip opening 33 place.In order to not hinder the rotation of roto-siofter cylinder 34, between striker plate 38 and revolution screen drum 34, there is gap, this gap is much smaller relative to the space between revolution screen drum 34 and housing 30, the effect of striker plate 38 is that the grog preventing from sieving enters in roto-siofter slag-drip opening 33, environment to external world; Because screen drum tail end and heavy caliber end and below body exist very large space, the foreign material such as the paper scrap that part is discharged floatingly may enter the conveying reamer of the outfeed belt conveyor of below, and striker plate also serves good backstop action to foreign material such as this place's paper scraps.
As shown in Figure 4, revolution screen drum heavy caliber end is provided with blocking material ring 39, and the outer rim of blocking material ring 39 is fixed on revolution screen drum 34 inwall.Roto-siofter screen drum 34 inner support angle steel may there is the remaining grog of fraction be not turned back to the reamer of outfeed belt conveyor inside, below and discharge, the blocking material ring that this place increases is well inner and enter the reamer of outfeed belt conveyor inside, below at roto-siofter this place's clout backstop, avoids the discharge of the remaining grog in this place.
As in Figure 2-4, the embodiment of the present invention also provides a kind of plaster of paris material screening system, comprises feeding conveyor 2, roto-siofter 3 and outfeed belt conveyor 4, and roto-siofter 3 is the plaster of paris material roto-siofter described in above-mentioned any embodiment.
On the basis of existing grog screening system, carry out following improvement:
Increase roto-siofter Effective selection length (revolution screen drum 34 length added by former long 2700mm and grow to 4200mm);
Change former roto-siofter screen drum structure, change taper type into by original straight barrel type; Screen drum diameter changes large end barrel dliameter 1300mm, small end barrel dliameter 1050mm into by original 1400mm;
Change slag-drip opening structure and position, straight-line is changed into by former side-type, improve slag-drip opening angle and shrink slag-drip opening, as shown in Figure 1, former roto-siofter slag-drip opening 33 is arranged on the side of roto-siofter, namely be positioned at the outside of roto-siofter length direction, and and angle between the longitudinal section of roto-siofter screen drum 34 (cross central axis) at 45 °;
Improve dust collecting system, dust-collecting pipe caliber changes 219mm into by 165mm, increases dust-collecting pipe internal negative pressure, and line end of gathering dust increases dust collection cover 37;
Revolution screen drum tail end and heavy caliber end 34b increase blocking material ring 39 and striker plate 38;
After roto-siofter effective length lengthens, the reamer of outfeed belt conveyor 4 inside of below lengthens 1500mm thereupon; The reamer more exchanging rotor of the feeding conveyor inside of top, changes blanking on the right side of single-screw into by double helix intermediate blanking.
Increasing screen drum effective length makes grog in the gyration time more progress and make more grog settle down before not arriving screen drum end of screen drum, improve the separation rate of the impurity such as grog and paper scrap simultaneously, reduce the discharge of slag-drip opening plaster of paris dust to a great extent.
Screen drum changes the discharge that concentric reducer taper type structure is convenient to the impurity such as paper scrap into, improves impurity expulsion efficiency; After barrel dliameter entirety reduces, roto-siofter 3 installation site is improved space, slag-drip opening place can be put labour intensity that a garbage carriage (former roto-siofter directly comes field ground due to highly lower foreign material, and then post is cleared up again) reduces post; Watt 41 place's fault rates are hung higher in the middle of the reamer of outfeed belt conveyor 4 inside below roto-siofter, owing to being in immediately below former roto-siofter, there is no space for maintenance, once this place breaks down, service work will be very passive, after new improvement, roto-siofter 3 avoids this place maintenance point, and the fault having this place of enough spatial manipulation to occur after new roto-siofter elevated height.
Side-type slag-drip opening changes straight-line into, make slag-drip opening angle improve the discharge being conducive to the impurity such as paper scrap, and straight-line deslagging opening does not exist dead angle, solves the impurity such as paper scrap in this blockage problem; Shrink slag-drip opening roto-siofter internal negative pressure to be raised further be more conducive to the recovery of dust collecting system to top gesso
Because electricity three district's negative pressure of gathering dust are high compared with a district, dust collection pipe makes roto-siofter internal negative pressure increase after accessing 3rd district, dust-collecting pipe diameter makes negative pressure air quantity increase of gathering dust after increasing, dust-collecting pipe tail end increases dust collection cover and increases specific collection area, dust collecting system solve to a great extent after improving clinker dust floating above roto-siofter (because Clinker Flow is better, grog can kick up when roto-siofter internal rotating carry a part of plaster of paris dust) formed material chain caudad mobile precipitation at slag-drip opening place cause overflow problem.
As shown in Figure 1, hang watts 41 in the middle of the reamer of outfeed belt conveyor 4 inside below former roto-siofter and be in immediately below roto-siofter 3, do not have space for maintenance, because this place is again the multiple place of fault, once break down in this junction, service work can be very passive; Newly change roto-siofter and well avoid this place maintenance point, and after the raising of roto-siofter entirety, during maintenance, have enough space for maintenances.

Claims (9)

1. a plaster of paris material roto-siofter, at least comprise housing and be arranged on the revolution screen drum in described housing, described housing has charging aperture and slag-drip opening, described housing bottom is provided with discharging opening, and described discharging opening is between described charging aperture and slag-drip opening; It is characterized in that:
Described revolution screen drum is taper type;
Described charging aperture is positioned at case top, and the small-caliber end of close described revolution screen drum;
Described slag-drip opening is positioned at described housing bottom, and near described revolution screen drum heavy caliber end.
2. plaster of paris material roto-siofter according to claim 1, is characterized in that:
The cone-apex angle of described revolution screen drum is between 3 ° ~ 4 °.
3. plaster of paris material roto-siofter according to claim 2, is characterized in that:
The cone-apex angle of described revolution screen drum is 3.5 °.
4. plaster of paris material roto-siofter according to claim 1, is characterized in that:
Described slag-drip opening is positioned in the central axial direction of described revolution screen drum, and and in 70 ° ~ 80 ° angles between described revolution screen drum cross section.
5. plaster of paris material roto-siofter according to claim 4, is characterized in that:
Angle between described slag-drip opening and described revolution screen drum cross section is 75 °.
6. plaster of paris material roto-siofter according to claim 1, is characterized in that:
Described housing is provided with dust collection cover, the pipeline communication of described dust collection cover and dust collection device.
7. plaster of paris material roto-siofter according to claim 6, is characterized in that:
Be provided with striker plate between described revolution screen drum and housing, described striker plate is fixed on described inner walls, between described discharging opening and slag-drip opening, and near described slag-drip opening place.
8., according to the arbitrary described plaster of paris material roto-siofter of claim 1-7, it is characterized in that:
Described revolution screen drum heavy caliber end is provided with blocking material ring, and the outer rim of described blocking material ring is fixed on described revolution inboard wall of riddle drum.
9. a plaster of paris material screening system, comprises feeding conveyor, roto-siofter and outfeed belt conveyor, and described roto-siofter is the arbitrary described plaster of paris material roto-siofter of the claims 1-8.
CN201410476378.9A 2014-09-17 2014-09-17 Calcined gypsum rotary screen and screening system Pending CN104259090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410476378.9A CN104259090A (en) 2014-09-17 2014-09-17 Calcined gypsum rotary screen and screening system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410476378.9A CN104259090A (en) 2014-09-17 2014-09-17 Calcined gypsum rotary screen and screening system

Publications (1)

Publication Number Publication Date
CN104259090A true CN104259090A (en) 2015-01-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200945479Y (en) * 2006-08-13 2007-09-12 马丙强 Sand sieving machine
CN202921544U (en) * 2012-10-15 2013-05-08 蚌埠华东石膏有限公司 Gypsum screening device
CN203599040U (en) * 2013-12-02 2014-05-21 湖北新洋丰肥业股份有限公司 Movable catalytic agent rotary screen with automatic feeding and dust collecting device
CN203816895U (en) * 2014-03-26 2014-09-10 北新集团建材股份有限公司 Rotary sieve
CN204208778U (en) * 2014-09-17 2015-03-18 淮南北新建材有限公司 A kind of plaster of paris material roto-siofter and screening system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200945479Y (en) * 2006-08-13 2007-09-12 马丙强 Sand sieving machine
CN202921544U (en) * 2012-10-15 2013-05-08 蚌埠华东石膏有限公司 Gypsum screening device
CN203599040U (en) * 2013-12-02 2014-05-21 湖北新洋丰肥业股份有限公司 Movable catalytic agent rotary screen with automatic feeding and dust collecting device
CN203816895U (en) * 2014-03-26 2014-09-10 北新集团建材股份有限公司 Rotary sieve
CN204208778U (en) * 2014-09-17 2015-03-18 淮南北新建材有限公司 A kind of plaster of paris material roto-siofter and screening system

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Application publication date: 20150107

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