CN204544282U - Dry method sand production line - Google Patents

Abstract

The utility model relates to a kind of dry method sand production line, and metaling rises in the hopper above circular cone sand making machine by conveying bucket elevator, by hopper to circular cone sand making machine feed; Metaling is rolled into the different mulling of specification and leads to mulling bucket elevator and mulling conveyer belt to modular vibration screening device feed by circular cone sand making machine, what modular vibration screening device sieved out exceed standard, and coarse sand sand material turns back in hopper by steaming again bucket elevator and steaming again material-conveying belt, the coarse sand that modular vibration screening device sieves out is exported by coarse sand conveyer belt, the medium sand that modular vibration screening device sieves out is exported by medium sand conveyer belt, and the fine sand that modular vibration screening device sieves out is exported by fine sand conveyer belt; The dust produced during screening blanking is sucked cyclone dust collectors and carries out coarse filtration dedusting by cyclone dust collectors by main the aspiration of negative pressure mouth by modular vibration screening device sieve, by pulse bag type dust collector, final dusting is carried out to the micronic dust in cyclone dust collectors dust flue, finally discharge clean air.

Description

Dry method sand production line

Technical field

The utility model relates to one both to have been had dry method and had rolled sand function processed, had again dry method and rolled modulation and roll die cavity function, have again the dry method sand production line of composite dedusting function simultaneously, belong to dry method sand production line manufacture field.

Background technology

CN103341383A, title " a kind of dry method sand machine ", by charging aperture, upper shell, lower house, milling roller, roll dish, bearing, apparatus for examination and repair, inner sieving mechanism, working cylinder, scraper plate, discharging opening, reductor, shaft coupling, mair motor, foundation bolt forms, charging aperture is arranged on the center on upper shell top, discharging opening is on the base plate of lower house, milling roller is evenly distributed on and rolls on dish in upper shell, inner sieving mechanism is fixed on upper shell by adjusting device, bearing support milling roller, the weight of upper shell and lower house, bearing is connected with basis by foundation bolt.

CN103433108A, title " a kind of dry method sand equipment and technics ", comprise jaw crusher, impact crusher, the first classifying screen, dry method sand machine, the second classifying screen and concentrated dust collecting system, production process route is, the building stones in building stones storehouse are sent into jaw crusher equably by batcher and are carried out first time coarse crushing, material after fragmentation is transported in impact crusher and carries out second time fine crushing, material after fragmentation enters the first classifying screen and carries out classification, the sandstone being less than 40mm is delivered to dry method sand machine by conveyer and is carried out pulverizing sand processed, the rubble being greater than 40mm returns impact crusher, the sand material entering dry method sand machine is transported to the second classifying screen and carries out classification after the pulverizing of dry method sand machine, the sand being less than 3mm is directly admitted in finished product sand storage, the building stones being greater than 3mm return to dry method sand machine and pulverize, produce each airborne dust point by concentrated dust collecting system concentrated dust collecting, stone flour after collection is transported to stone flour storage and deposits.

The weak point of above-mentioned background technology: the foundation of dry method sand production line cannot be realized and the screening of carse, medium and small three kinds of sand cannot be realized.

Utility model content

Purpose of design: avoid the weak point in background technology, design one had both had dry method and had rolled sand function processed, had again dry method and rolled modulation and roll die cavity function, while there is again the dry method sand production line of composite dedusting function.

Design: in order to realize above-mentioned purpose of design.1, roll wall in circular cone sand making machine and determine the outer lip limit that wall lower end inner wall has an annular protrusion, having annular protrusion at the dynamic wall outer wall that rolls on raised lip top and form the design that pocket material loop curve rolls passage between the outer lip limit of annular protrusion and annular protrusion, is one of technical characteristic of the present utility model.The object of such design is: in existing circular cone sand making machine, roll the Longkou (rolling chamber) of determining wall and rolling dynamic wall and roll face for mutually coincideing, when metaling by the charging aperture of cone machine enter roll chamber time, owing to forming, the face of rolling of rolling chamber is mutually opposing parallel not easily catches metaling, cause the rubble by rolling uneven to the wearing and tearing rolling chamber wall, in the course of time cause roll determine wall and roll dynamic wall form roll chamber wearing and tearing, the bottom of rolling chamber is made to form the right closed annular double wedge of circular phase, this closed annular double wedge, make to roll the sand material ground in chamber cannot discharge, formed in nest and repeatedly roll, form dust, cause the failure rolling sand processed.Roll wall in circular cone sand making machine designed by the utility model and determine the outer lip limit that wall lower end inner wall has an annular protrusion, roll passage and just form to roll because the annular protrusion rolled in dynamic wall outside wall surface that the outer lip limit of this projection is relative with being positioned at top, outer lip limit forms pocket material loop curve and determine wall inwall convex arc, roll the arc bend passage that the outer convex arc of dynamic wall outer wall matches, outer lip limit in this arc bend passage and annular protrusion are held by the fragment building stones rolled just as two road annular holder hands, make to roll chamber can either complete and grind sand processed to the supporting roll of metaling, supporting roll can be ground again made sand to roll passage by pocket material loop curve and discharge fast, thus make circular cone sand making machine roll sand chamber processed to avoid internal fight (repeatedly rolling), decrease the wearing and tearing to rolling sand chamber processed, achieve the object that supporting roll grinds sand processed.2, the design of modular vibration screening device is technical characteristic two of the present utility model.The object of such design is: due to modular vibration screening device in structural design by fixed linear vibrating screen, upper portable linear vibrating screen and roll off the production line straight vibratory sieve and upper linear vibrating screen guide rail and lower linear vibrating screen guide rail are formed, no matter be fixed linear vibrating screen, upper portable linear vibrating screen and the straight vibratory sieve that rolls off the production line, the weight of its each linear vibrating screen reaches 2-5 ton, in its vibratory sieve, the service life of the screening part of screen cloth only only has just must change the service life of a few hours in dry method sand production line, if be not designed to Modular moving structure, the replacing of screen cloth cannot be completed, secondly, because the raw material in the husky production line of this dry method system are after conical sand making crusher machine, enter the semi-finished product of vibratory sieve except steaming again and expecting that granularity is larger, for the grains of sand and the dust of less than 4.75, the amplitude advantage of existing fixed linear vibrating screen just cannot play, therefore the application is on the basis of existing fixing linear vibrating screen, fixing linear vibrating screen is designed to two layers of mesh structure by three layers of mesh structure, and on the basis of two layers of mesh structure, two-layer linear module sieve is added in the below of bottom screen, this two-layer linear module vibratory sieve can sieve out the sand grains of two kinds of different size scopes, because screen cloth unit order number increases, the diameter of screen cloth is also just thinner, often want damaged, this two-layer linear module vibratory sieve adopts track to release by the application for this reason, the structure resetted can change screen cloth easily, and screen cloth being prepared in advance according to modular structure one fritter one fritter, release outside when linear vibrating screen and just directly change portion's (screen cloth or module) damaged in screen cloth, not only change conveniently, speed is fast, and change laborsaving, cost-saving, reduce the wasting of resources, three is that the screen cloth in fixed linear vibrating screen has been designed to two layers by three layers by the application, not only makes the space of upper strata screen cloth and lower screen increase to more than 80cm, and solves the difficult difficult problem of linear vibration screen net replacing for a long time.3, the screen cloth of linear vibrating screen is the design of sandwich module screen cloth, is technical characteristic three of the present utility model.The object of such design is: because sandwich module screen cloth is made up of upper strata punishment in advance orifice plate, intermediate module screen cloth, lower floor's punishment in advance orifice plate, namely this sandwich module screen cloth takes upper and lower two-layer macropore steel plate or macropore wearing plate screen cloth does skeleton, middle clamping is shaked out and is needed the standard screen cloth of order number, because upper strata punishment in advance orifice plate is that rigidity punishment in advance orifice plate or wear-resisting nonmetal sieve plate material make, it can not only hold by sieve sand material falling impacts power, and the impulsive force of sand material to screen cloth can be sieved by slowly-releasing widely, greatly extend the service life of screen cloth; Secondly, when screen cloth is damaged, because sieve wind is module type screen mesh in structural design, thus can either quick-replaceable, again reduce screen cloth consuming cost.4, the design of cyclone dust collectors and pulse bag type dust collector mixed binding is technical characteristic four of the present utility model.The object of such design is: what cyclone dust removal brute force siphoned away also has thinner sand except dust, further recovery operation can also be carried out below cyclone dust removal, cyclone dust removal is connected to pulse bag type dust collector, pulse bag type dust collector controls powder amount and airborne dust completely, the fine sand collected through cyclone dust collectors and vibrate screen banks orlop fine sand out and can enter another one modularization drawer type linear vibrating screen and come further fine sand to be separated with dust, obtain the thinner grains of sand, have owing to erectting dust discharge channel upper at cyclone dust collectors tail end the dust absorbing passage be connected with pulse bag type dust collector suction port simultaneously, the dust of dust discharge channel upper all can be sucked pulse bag type dust collector by this dust absorbing passage, realize the object that dust discharge passage is discharged without dust, and the dust entered in pulse bag type dust collector is after pulse bag type dust collector dedusting, its clean air is discharged by the discharge duct of pulse bag type dust collector.5, the application is by the design of circular cone sand making machine, modular vibration screening device, compound dust collecting system employing bucket elevator and conveyer belt integrated morphology, is technical characteristic five of the present utility model.The object of such design is: it greatly can not only reduce the floor space of whole system; And reduce manufacturing cost and the use cost of complete machine, the more important thing is that it can not only realize dustlessization of system production, and achieve the manufacture of four kinds of different size sand grains.6, main dust suction chamber dust sucting pipeline suction port to be positioned at below fixed linear vibrating screen and above upper portable linear vibrating screen between design, be technical characteristic six of the present utility model.The object of such design is: by the design of main dust suction chamber suction port below fixed linear vibrating screen and on below portable linear vibrating screen, it make use of the feature of sand material dust and sand gradation in being fallen by the formula linear vibrating screen vibration sub-sieve that is fixed during fixed linear vibration screen net dexterously, by the dust removing in sand, thus since solving people's normal phase, sand blast has been played the practice of dust suction, direct reduction energy consumption, economize on electricity per hour reaches more than 50 kilowatts, not only significantly reduce energy consumption consumption, and reduce the noise that dedusting produces.

Technical scheme: a kind of dry method sand production line, metaling rises in the hopper above circular cone sand making machine by conveying bucket elevator, by hopper to circular cone sand making machine feed; Metaling is rolled into the different mulling of specification and leads to mulling bucket elevator and mulling conveyer belt to modular vibration screening device feed by circular cone sand making machine, what modular vibration screening device sieved out exceed standard, and coarse sand sand material turns back in hopper by steaming again bucket elevator and steaming again material-conveying belt, the coarse sand that modular vibration screening device sieves out is exported by coarse sand conveyer belt, the medium sand that modular vibration screening device sieves out is exported by medium sand conveyer belt, and the fine sand that modular vibration screening device sieves out is exported by fine sand conveyer belt; Modular vibration screening device screening blanking portion is arranged in the main the aspiration of negative pressure room in combination dust pelletizing system, by main the aspiration of negative pressure mouth, the dust produced during screening blanking is sucked cyclone dust collectors and carries out coarse filtration dedusting by cyclone dust collectors, then by pulse bag type dust collector, final dusting is carried out to the micronic dust in cyclone dust collectors dust flue, finally discharge clean air.

The utility model is compared with background technology, one is power saving: the power consumption of circular cone sand making machine is 1/2 of non-conical sand making, and the design of cyclone dust removal and bag-type dust, not only achieve dustless discharge, and power consumption is than about prior art reduction half, is only about 50 kilowatts; Two is achieve to roll sand processed, and due to the working method pressure-bearing rolling compaction sand of circular cone sand making machine, in the middle of the process rolled, circular cone sand making machine also constantly rolls the grains of sand, and the grains of sand full grains of therefore producing, avoid the generation of faller gill shape sand; Modular vibration screening device designs, both solved existing fixing linear vibration screen net damage change difficult, time-consuming, take a lot of work, defect that screen cloth is all changed, the sand material that different size model turns can be sieved out again according to GB, not only meet the grating requirement that general building trade meets strong concrete and mortar especially, also meet the needs of chemical industry by husky aspect; Two is designs of many dynamic formulas linear vibrating screen, the manufacture of large-scale vibrating screen is not only made to be achieved, and achieve fixing linear vibrating screen and multilayer and move reducing of spacing between linear vibrating screen, not only to be conducive in sand material screening process dust to reclaim, and achieve quick release when portable linear vibration screen net is changed, operating personnel stand, fast, conveniently, the object of laborsaving replacing; Four is fundamentally solve circular cone sand making machine to open and begin to roll that sand rubble pocket processed incessantly causes rolls the technical barrier that chamber wearing and tearing close.

Accompanying drawing explanation

Fig. 1 is the main TV structure schematic diagram of dry method sand production line.

Fig. 2 is the plan structure schematic diagram of Fig. 1.

Fig. 3 is the structural representation that cyclone dust collectors and pulsed jet cloth filter combine dedusting.

Fig. 4 is the sectional structure schematic diagram of circular cone sand making machine.

Fig. 5 is that circular cone sand making machine rolls and determines wall and roll dynamic wall to form and roll the structural representation in chamber.

Fig. 6 is the partial enlargement structural representation in Fig. 5.

Fig. 7 is the main TV structure schematic diagram of upper portable linear vibrating screen.

Fig. 8 is the side-looking structural representation of Fig. 7.

Fig. 9 is the sectional structure schematic diagram of frame sandwich module screen cloth.

Figure 10 is the plan structure schematic diagram of Fig. 9.

Detailed description of the invention

Embodiment 1: with reference to accompanying drawing 1-8.A kind of dry method sand production line, metaling rises in the hopper above circular cone sand making machine by conveying bucket elevator, by hopper to circular cone sand making machine feed; Metaling is rolled into the different mulling of specification and leads to mulling bucket elevator and mulling conveyer belt to modular vibration screening device feed by circular cone sand making machine, what modular vibration screening device sieved out exceed standard, and coarse sand sand material turns back in hopper by steaming again bucket elevator and steaming again material-conveying belt, the coarse sand that modular vibration screening device sieves out is exported by coarse sand conveyer belt, the medium sand that modular vibration screening device sieves out is exported by medium sand conveyer belt, and the fine sand that modular vibration screening device sieves out is exported by fine sand conveyer belt; Modular vibration screening device screening blanking portion is arranged in the main the aspiration of negative pressure room in combination dust pelletizing system, by main the aspiration of negative pressure mouth, the dust produced during screening blanking is sucked cyclone dust collectors and carries out coarse filtration dedusting by cyclone dust collectors, then by pulse bag type dust collector, final dusting is carried out to the micronic dust in cyclone dust collectors dust flue, finally discharge clean air.Namely, conveying bucket elevator 1 discharging opening is communicated with hopper 10 charging aperture by material-conveying belt 2, hopper 10 discharging opening is communicated with circular cone sand making machine 5 charging aperture, circular cone sand making machine 5 discharging opening is directly to the pan feeding portion of mulling material-conveying belt 4, the discharging portion of mulling material-conveying belt 4 is directly to the feeder of mulling bucket elevator 3, the discharging opening of mulling bucket elevator 3 is directly to the pan feeding portion of mulling material-conveying belt 8, the discharging portion of mulling material-conveying belt 8 is directly to modular vibration screening device 16 pan feeding portion, modular vibration screening device 16 is sieved out the coarse sand sand material that exceeds standard and is entered the feeder steaming again bucket elevator 17 by guide passage, steam again the discharging opening of bucket elevator 17 directly to the pan feeding portion of steaming again material-conveying belt 9, steam again the discharging portion of material-conveying belt 9 directly to the charging aperture of hopper 10, the coarse sand that modular vibration screening device 16 sieves out by guide passage directly to the feeding end of coarse sand conveyer belt 18, the medium sand that modular vibration screening device 16 sieves out by guide passage directly to the feeding end of medium sand conveyer belt 19, the fine sand that modular vibration screening device 16 sieves out by guide passage directly to the feeding end of fine sand conveyer belt 20, modular vibration screening device 16 is arranged in the main the aspiration of negative pressure room 22 in combination dust pelletizing system, main the aspiration of negative pressure mouth 151 is communicated with bottom, main the aspiration of negative pressure room 22 and is communicated with the aspiration of negative pressure mouth of cyclone dust collectors 14 by dedusting pipeline 15, cyclone dust collectors 14 dust discharge passage 13 top is communicated with by the entrance of bend pipe with micronic dust the aspiration of negative pressure pipeline 121, and the outlet of micronic dust the aspiration of negative pressure pipeline 121 is communicated with pulse bag type dust collector 12 the aspiration of negative pressure mouth.Described hopper 10 has withdrawn sand overfall and withdrawn sand flash mouth is communicated with overflow downcomer 7, overflow downcomer 7 discharging opening directly mentions machine 6 pan feeding portion to overflow bucket type, and overflow bucket type mentions machine 6 discharging opening by guide passage directly to circular cone sand making machine 5 charging aperture.

Described modular vibration screening device 16 is made up of fixed linear vibrating screen 166, upper portable linear vibrating screen 162 and downward moving linear vibrating screen 163 and upper linear vibrating screen guide rail 164 and lower linear vibrating screen guide rail 165; Be provided with linear vibrating screen guide rail 164 and lower linear vibrating screen guide rail 165 below fixed linear vibrating screen 166 successively, upper portable linear vibrating screen 162 and the straight vibratory sieve 163 of downward moving line lay respectively on linear vibrating screen guide rail 164 and downward moving linear vibrating screen guide rail 165.

Described fixed linear vibrating screen 166 is made up of two layers of screen cloth and between upper strata screen cloth and lower screen, spacing is greater than 80cm, is less than 100cm.With reference to accompanying drawing 7 and 8.Described portable linear vibrating screen 162 is identical with downward moving linear vibrating screen 163 structure, and shock electric machine 171 is arranged in the middle part of screen box 167 in upper portable linear vibrating screen 162, bight, screen box 167 back side four has groove 173, bight, screen box 167 back side four groove to coordinate with supporting leg 169 upper surface respectively by cushion 168 and for supporting screen box 167, supporting leg 169 lower end is connected with I-shaped steel bar 170 upper surface, rail wheel 172 is equipped with in I-shaped steel bar 170 lower end, upper strata sieve plate assembly 174 and lower floor's sieve plate assembly 175 lay respectively at screen box 167 inside upper part and bottom.

With reference to accompanying drawing 9 and 10.The sieve plate assembly of described fixed linear vibrating screen is frame sandwich module screen cloth, upper strata vibration material path pressing plate 1601 and lower floor's vibration material path pressing plate 1602 are for steel plate punishment in advance orifice plate and screen cloth 1603 is clipped in the middle of upper strata vibration material path pressing plate 1601 and lower floor's vibration material path pressing plate 1602, and upper strata vibration material path pressing plate 1601, screen cloth 1603 and lower floor's vibration material path pressing plate 1602 are positioned at sieve plate frame 1604.Described upper strata vibration material path pressing plate 1601 and screen cloth 1603 vibrate material path plate frame by polylith modular upper strata respectively and form and to form with polylith module type screen mesh and modular upper strata vibrates material path pressing plate and module type screen mesh matches.

With reference to accompanying drawing 9 and 10.The sieve plate assembly of described portable linear vibrating screen is frame sandwich module screen cloth, upper strata vibration material path pressing plate 1601 and lower floor's vibration material path pressing plate 1602 are for steel plate punishment in advance orifice plate and screen cloth 1603 is clipped in the middle of upper strata vibration material path pressing plate 1601 and lower floor's vibration material path pressing plate 1602, and upper strata vibration material path pressing plate 1601, screen cloth 1603 and lower floor's vibration material path pressing plate 1602 are positioned at sieve plate frame 1604.Described upper strata vibration material path pressing plate 1601 and screen cloth 1603 vibrate material path plate frame by polylith modular upper strata respectively and form and to form with polylith module type screen mesh and modular upper strata vibrates material path pressing plate and module type screen mesh matches.

Described combination dust pelletizing system is made up of precipitator dust dust suction chamber 221, main dust suction chamber 222, discharging dust suction chamber 223 cyclone dust collectors 14, pulse bag type dust collector 12, dust suction chamber 22(dust suction chamber 22) form, in cyclone dust collectors 14, dust discharge passage 13 top is communicated with micronic dust the aspiration of negative pressure pipeline 121 suction inlet by bend pipe, the aspiration of negative pressure pipeline 121 outlet is communicated with the pulse bag type dust collector 12 the aspiration of negative pressure mouth being positioned at dust discharge passage 13 bottom, precipitator dust dust suction chamber 221 covers on the cone ash bucket of cyclone dust collectors 14, main dust suction chamber 222 covers on modular vibration screening device 16, on the guide passage that discharging dust suction chamber 223 covers on modular vibration screening device and precipitator dust dust suction chamber 221 be communicated with by the dust sucting pipeline of dust sucting pipeline with main dust suction chamber with the blast suction port of discharging dust suction chamber 223.The dust sucting pipeline suction port of described main dust suction chamber to be positioned at below fixed linear vibrating screen 166 and above upper portable linear vibrating screen 162 between.

Roll wall in described circular cone sand making machine 5 and determine the outer lip limit 511 that wall lower end inner wall has an annular protrusion, have annular protrusion 521 and between the outer lip limit 511 of annular protrusion and annular protrusion 521, form pocket material loop curve roll passage 53 at the dynamic wall outer wall that rolls on raised lip top.Described modular vibration screening device 16 sieves out the coarse sand diameter that exceeds standard and is greater than 4.75mm.

The coarse sand diameter that described modular vibration screening device 16 sieves out is 2.36--4.75mm.The medium sand diameter that described modular vibration screening device 16 sieves out is 1.18--2.36mm.The fine sand diameter that described modular vibration screening device 16 sieves out is 0.6--1.18mm.

Its dry method sand production line sand method, fragment building stones are risen to discharging opening and are transported in hopper 10 by material-conveying belt 2 by conveying bucket elevator 1, hopper 10 by guide material discharging opening to circular cone sand making machine 5 charging aperture feed, sand material after rolling is discharged on mulling material-conveying belt 4 by discharging opening by circular cone sand making machine 5 continuously, circular cone sand making machine is discharged sand material and is transported to mulling bucket elevator 3 feeder by mulling material-conveying belt 4 continuously continually, sand material rises to by mulling bucket elevator 3 leads on mulling material-conveying belt 8 by sand material above the mulling material-conveying belt 8 pan feeding portion relative with its discharging opening and by the deflector chute of mulling bucket elevator 3 discharging opening, sand material is discharged to modular vibration screening device 16 pan feeding portion by mulling material-conveying belt 8 discharging portion, fixed linear vibrating screen 166 upper sieve mesh screen in modular vibration screening device 16 is separated the sand material that exceeds standard and is entered the feeder steaming again bucket elevator 17 by guide passage, steam again bucket elevator 17 sand material that exceeds standard is risen to relatively with its discharging opening to steam again above material-conveying belt 9 pan feeding portion and to lead steam again on material-conveying belt 9 by the deflector chute the steaming again bucket elevator 17 discharging opening sand material that will exceed standard, steaming again material-conveying belt 9 discharging portion is discharged in hopper 10 by sand material, the coarse sand that fixed linear vibrating screen 166 lower screen in modular vibration screening device 16 sieves out is by guide passage directly to coarse sand conveyer belt 18 feeding end, and coarse sand imports and specifies coarse sand rickyard by coarse sand conveyer belt discharging end, the medium sand that upper portable linear vibrating screen 162 in modular vibration screening device 16 sieves out is by guide passage directly to the feeding end of medium sand conveyer belt 19, and coarse sand imports and specifies medium sand rickyard by medium sand conveyer belt discharging end, the fine sand that the straight vibratory sieve 163 of downward moving line in modular vibration screening device 16 sieves out is by guide passage directly to the feeding end of fine sand conveyer belt 20, and coarse sand imports and specifies fine sand rickyard by fine sand conveyer belt discharging end, main the aspiration of negative pressure mouth 151 in cyclone dust collectors 14 in combination dust pelletizing system and two-way dust sucting pipeline are respectively by main dust suction chamber 222, the dust the aspiration of negative pressure produced in precipitator dust dust suction chamber 221 and discharging the dust suction chamber 223 and dust be drawn onto is entered cyclone dust collectors 14 dedusting, particulate to be transported to by particulate conveyer belt 21 and to specify micronic dust collection place by downward moving linear vibrating screen 163 undersize material of the particulate in dust on the particulate conveyer belt 21 falling bottom dust discharge passage 13 by gravitate tenesmus during dust discharge passage 13 and in modular vibratory sieve 16, obtain ultra-fine sand, i.e. 0.25-0.6mm, and the micronic dust in dust discharge passage 13 to suck in pulse bag type dust collector 12 after pulse bag type dust collector 12 dedusting by the micronic dust the aspiration of negative pressure pipeline 121 be communicated with dust discharge passage 13, its clean air is discharged by the discharge duct of pulse bag type dust collector 12.

Roll wall in described circular cone sand making machine 5 and determine the outer lip limit 511 that wall lower end inner wall has an annular protrusion, have annular protrusion 521 and between the outer lip limit 511 of annular protrusion and annular protrusion 521, form pocket material loop curve roll passage 53 at the dynamic wall outer wall that rolls on raised lip top.

Described modular vibration screening device 16 sieves out the coarse sand diameter that exceeds standard and is greater than 4.75mm.The coarse sand diameter that described modular vibration screening device 16 sieves out is 2.36--4.75mm.The medium sand diameter that described modular vibration screening device 16 sieves out is 1.18--2.36mm.The fine sand diameter that described modular vibration screening device 16 sieves out is 0.6--1.18mm.

It is to be understood that: although above-described embodiment to be contrasted detailed text description to mentality of designing of the present utility model; but these text descriptions; just the simple text of the utility model mentality of designing is described; instead of the restriction to the utility model mentality of designing; any do not exceed the utility model mentality of designing combination, increase or amendment, all fall in protection domain of the present utility model.

Claims (16)

1. a dry method sand production line, it is characterized in that: conveying bucket elevator discharging opening is communicated with hopper feed mouth by material-conveying belt, hopper discharging opening is communicated with conical sand making machine inlet capable, circular cone sand making machine discharging opening is directly to the pan feeding portion of mulling material-conveying belt, the discharging portion of mulling material-conveying belt is directly to the feeder of mulling bucket elevator, the discharging opening of mulling bucket elevator is directly to the pan feeding portion of mulling material-conveying belt, the discharging portion of mulling material-conveying belt is directly to modular vibration screening device pan feeding portion, modular vibration screening device is sieved out the coarse sand sand material that exceeds standard and is entered the feeder steaming again bucket elevator by guide passage, steam again the discharging opening of bucket elevator directly to the pan feeding portion of steaming again material-conveying belt, steam again the discharging portion of material-conveying belt directly to the charging aperture of hopper, the coarse sand that modular vibration screening device sieves out by guide passage directly to the feeding end of coarse sand conveyer belt, the medium sand that modular vibration screening device sieves out by guide passage directly to the feeding end of medium sand conveyer belt, the fine sand that modular vibration screening device sieves out by guide passage directly to the feeding end of fine sand conveyer belt, modular vibration screening device is arranged in the main the aspiration of negative pressure room in combination dust pelletizing system, main the aspiration of negative pressure mouth is communicated with bottom, main the aspiration of negative pressure room and is communicated with the aspiration of negative pressure mouth of cyclone dust collectors by dedusting pipeline, cyclone dust collectors dust discharge channel upper is communicated with by the entrance of bend pipe with micronic dust the aspiration of negative pressure pipeline, and the outlet of micronic dust the aspiration of negative pressure pipeline is communicated with pulse bag type dust collector the aspiration of negative pressure mouth.

2. dry method sand production line according to claim 1, it is characterized in that: described hopper has withdrawn sand overfall and withdrawn sand flash mouth is communicated with overflow downcomer, overflow downcomer discharging opening directly mentions machine pan feeding portion to overflow bucket type, and overflow bucket type mentions machine discharging opening by guide passage directly to conical sand making machine inlet capable.

3. dry method sand production line according to claim 1, is characterized in that: described modular vibration screening device is made up of fixed linear vibrating screen, upper portable linear vibrating screen and lower mobile linear vibrating screen and upper linear vibrating screen guide rail and lower linear vibrating screen guide rail; Be provided with linear vibrating screen guide rail and lower linear vibrating screen guide rail below fixed linear vibrating screen successively, upper portable linear vibrating screen and the straight vibratory sieve of downward moving line lay respectively on linear vibrating screen guide rail and lower linear vibrating screen guide rail.

4. dry method sand production line according to claim 3, is characterized in that: described fixed linear vibrating screen is made up of two layers of screen cloth and between upper strata screen cloth and lower screen, spacing is greater than 80cm, is less than 100cm.

5. dry method sand production line according to claim 3, it is characterized in that: described portable linear vibrating screen is identical with downward moving straight-line oscillation sieve structure, and shock electric machine is arranged in the middle part of screen box in upper portable linear vibrating screen, bight, the screen box back side four has groove, bight, the screen box back side four groove and to coordinate with supporting leg upper surface respectively by cushion and for supporting screen box, supporting leg lower end is connected with I-shaped steel bar upper surface, rail wheel is equipped with in I-shaped steel bar lower end, and upper strata sieve plate assembly and lower floor's sieve plate assembly lay respectively at screen box inside upper part and bottom.

6. dry method sand production line according to claim 3, it is characterized in that: the sieve plate assembly of described fixed linear vibrating screen is frame sandwich module screen cloth, upper strata vibration material path pressing plate and lower floor's vibration material path pressing plate are steel plate punishment in advance orifice plate and screen cloth is clipped in the middle of upper strata vibration material path pressing plate and lower floor's vibration material path pressing plate, and upper strata vibration material path pressing plate, screen cloth and lower floor's vibration material path pressing plate are positioned at sieve plate frame.

7. dry method sand production line according to claim 6, is characterized in that: described upper strata vibration material path pressing plate and screen cloth vibrate material path plate frame by polylith modular upper strata respectively and form and to form with polylith module type screen mesh and modular upper strata vibrates material path pressing plate and module type screen mesh matches.

8. dry method sand production line according to claim 5, it is characterized in that: the sieve plate assembly of described portable linear vibrating screen is frame sandwich module screen cloth, upper strata vibration material path pressing plate and lower floor's vibration material path pressing plate are steel plate punishment in advance orifice plate and screen cloth is clipped in the middle of upper strata vibration material path pressing plate and lower floor's vibration material path pressing plate, and upper strata vibration material path pressing plate, screen cloth and lower floor's vibration material path pressing plate are positioned at sieve plate frame.

9. dry method sand production line according to claim 8, is characterized in that: described upper strata vibration material path pressing plate and screen cloth vibrate material path plate frame by polylith modular upper strata respectively and form and to form with polylith module type screen mesh and modular upper strata vibrates material path pressing plate and module type screen mesh matches.

10. dry method sand production line according to claim 1, is characterized in that: described combination dust pelletizing system is made up of cyclone dust collectors, pulse bag type dust collector, precipitator dust dust suction chamber, main dust suction chamber, discharging dust suction chamber; In cyclone dust collectors, dust discharge channel upper is communicated with micronic dust the aspiration of negative pressure pipeline suction inlet by bend pipe, the aspiration of negative pressure tube outlet is communicated with the pulse bag type dust collector the aspiration of negative pressure mouth being positioned at dust discharge beneath galleries, precipitator dust dust suction chamber covers on the cone ash bucket of cyclone dust collectors, main dust suction chamber covers on modular vibration screening and is set up, on the guide passage that discharging dust suction chamber covers on modular vibration screening device and precipitator dust dust suction chamber be communicated with by the dust sucting pipeline of dust sucting pipeline with main dust suction chamber with the blast suction port of discharging dust suction chamber.

11. dry method sand production lines according to claim 10, is characterized in that: the dust sucting pipeline suction port of described main dust suction chamber to be positioned at below fixed linear vibrating screen and above upper portable linear vibrating screen between.

12. dry method sand production lines according to claim 1, it is characterized in that: roll wall in described circular cone sand making machine and determine the outer lip limit that wall lower end inner wall has an annular protrusion having annular protrusion and between the outer lip limit of annular protrusion and annular protrusion, form pocket material loop curve roll passage at the dynamic wall outer wall that rolls on raised lip top.

13. dry method sand production lines according to claim 1, is characterized in that: described modular vibration screening device sieves out the coarse sand diameter that exceeds standard and is greater than 4.75mm.

14. dry method sand production lines according to claim 1, is characterized in that: the coarse sand diameter that described modular vibration screening device sieves out is 2.36--4.75mm.

15. dry method sand production lines according to claim 1, is characterized in that: the medium sand diameter that described modular vibration screening device sieves out is 1.18--2.36mm.

16. dry method sand production lines according to claim 1, is characterized in that: the fine sand diameter that described modular vibration screening device sieves out is 0.6--1.18mm.