CN112845016A - Hot screening plant that gathers materials of asphalt concrete mix building - Google Patents
Hot screening plant that gathers materials of asphalt concrete mix building Download PDFInfo
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- CN112845016A CN112845016A CN202110223042.1A CN202110223042A CN112845016A CN 112845016 A CN112845016 A CN 112845016A CN 202110223042 A CN202110223042 A CN 202110223042A CN 112845016 A CN112845016 A CN 112845016A
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- Prior art keywords
- screening
- bin
- driving
- roller shaft
- driven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
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- Road Paving Machines (AREA)
Abstract
The invention discloses a hot aggregate screening device for an asphalt concrete mixing plant, which comprises a screening bin, wherein a first storage bin, a second storage bin, a third storage bin and a fourth storage bin are sequentially arranged at the bottom in the screening bin along the length direction of the screening bin, a feed inlet is formed in the upper front end of the screening bin, a feed mechanism is arranged at the feed inlet, a grading screening mechanism is arranged in the screening bin, and a cleaning mechanism is arranged on the grading screening mechanism. The invention has the advantages that the feeding mechanism can be used for stirring hot aggregates entering the screening bin to enable the hot aggregates to uniformly and evenly enter the screening bin, the subsequent roller screening treatment is convenient, the stepped screening mechanism can be used for stepped screening of the hot aggregates entering the screening bin, the screening roller shaft is adopted for screening, the screening precision is higher, the gap between the driving screening roller shaft and the driven screening roller shaft is adjustable, and the cleaning mechanism is matched to clean the space between the driving screening roller shaft and the driven screening roller shaft in an all-around manner, so that the use is convenient.
Description
Technical Field
The invention relates to the field of asphalt concrete mixing, in particular to a hot aggregate screening device for an asphalt concrete mixing plant.
Background
Asphalt concrete mixing equipment is the key equipment of bituminous paving construction, and the quality of asphalt concrete mixing equipment application directly influences the quality, progress and the productivity effect of road surface engineering construction. The basic work performed by the stirring device includes: 1. primarily batching cold mineral materials, heating and drying, re-screening and metering; 2. heating, insulating, conveying and metering the liquid asphalt; 3. conveying and metering seasonings; 4. the hot mineral aggregate, mineral powder and hot asphalt are uniformly mixed according to a certain mixing ratio to obtain the required finished product mixture.
The hot aggregate dried and heated by the drying cylinder needs to be sent into a screening device for screening treatment, and the screened hot aggregate and the screened sand with different granularities and stone are respectively stored in a storage bin. The current asphalt concrete hot aggregate screening plant sieves through the multilayer screen cloth mostly, and screening efficiency is lower with the screening precision, and the screen cloth hole takes place blocking phenomenon easily, during the clearance, needs the manual work to demolish the screen cloth, washes through high-pressure squirt, inconvenient use.
Disclosure of Invention
Aiming at the defects, the invention provides a hot aggregate screening device for an asphalt concrete mixing plant, which aims to solve the problem of screening hot aggregates of the asphalt concrete mixing plant.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hot aggregate screening device for an asphalt concrete mixing plant comprises a screening bin, wherein a first storage bin, a second storage bin, a third storage bin and a fourth storage bin are sequentially arranged at the bottom in the screening bin along the length direction of the screening bin, a feed inlet is formed in the upper front end of the screening bin, a feed mechanism is arranged at the feed inlet, a grading screening mechanism is arranged in the screening bin, and a cleaning mechanism is arranged on the grading screening mechanism;
the feeding mechanism comprises a conveying mounting frame, a driving motor, a driving conveying roller, a driven conveying roller, a conveying belt, a driving gear, a material stirring shaft, a driven gear and a plurality of material stirring teeth, the conveying mounting frame is arranged at the feed inlet, the driving motor is horizontally arranged at one side of the rear end of the conveying mounting frame, the driving conveying roller is movably inserted at one end in the conveying mounting frame, the front end of the transmission frame is connected with the rotating end of the driving motor, the driven transmission roller is movably inserted into the other end of the transmission mounting frame, the front end of the conveying frame extends out of the conveying installation frame, the conveying belt is sleeved on the driving conveying roller and the driven conveying roller, the driving gear is arranged on the driven conveying roller, the material stirring shaft is movably arranged at the front end of the conveying mounting frame, the driven gear is arranged at the front end of the material stirring shaft and is meshed with the driving gear, and the plurality of material stirring teeth are uniformly arranged on the material stirring shaft;
the stepped screening mechanism comprises a belt pulley I, a driving screening roller shaft I, a belt pulley II, a transmission belt I, a driving screening roller shaft II, a driving screening roller shaft III, three driving transmission gears, a group of relative transmission gears, three groups of driven screening roller shafts, driven transmission gears, an adjusting motor, three adjusting screw rods, a group of relative external threads and a group of screw nuts, wherein the belt pulley I is arranged at the front end of a driven transmission roller, the driving screening roller shaft I is movably inserted into a screening bin, the front end of the driving screening roller shaft I extends out of the screening bin and is positioned above a first storage bin, the belt pulley II is arranged at the front end of the driving screening roller shaft I, the transmission belt is sleeved on the belt pulley I and the belt pulley II, the driving screening roller shaft II is movably inserted into the screening bin, the front end of the driving screening roller shaft II extends out of the screening bin and is positioned above a, the front end of the adjusting motor extends out of the screening bin and is positioned above the third storage bin, three driving transmission gears are respectively installed on a first driving screening roll shaft, a second driving screening roll shaft and a third driving screening roll shaft, a group of opposite transmission gears are positioned on two sides of the driving transmission gears and are respectively meshed with the driving transmission gears, three groups of driven screening roll shafts are respectively and movably inserted in the screening bin, the front end of the adjusting motor extends out of the screening bin and is positioned on two sides of the first driving screening roll shaft, the second driving screening roll shaft and the third driving screening roll shaft, the driven transmission gears are installed at the front ends of the driven screening roll shafts and are mutually meshed with the transmission gears, the adjusting motor is horizontally installed on one side of the front surface of the screening bin, three adjusting screw rods are respectively and movably installed on the front surface of the screening bin, one adjusting screw rod is connected with the, a group of nuts are respectively sleeved on a group of opposite external threads;
the cleaning mechanism comprises a rotating motor, three rotating shafts, a first connecting rod, a second connecting rod, three fixing plates, a group of fixing shaft sleeves, a sliding rod, a plurality of mounting angle seats and a spray header, the rotating motor is horizontally arranged on one side of the rear surface of the screening bin, the three rotating shafts are respectively and movably inserted into the top of the screening bin, the front end of the rotating shaft extends out of the screening bin, one rotating shaft is connected with the rotating end of the rotating motor, the first connecting rod is arranged on the rotating shaft, the second connecting rod is movably hinged at the front end of the first connecting rod, three fixing plates are respectively arranged at the top in the screening bin, a group of fixing shaft sleeves are arranged at the bottoms of the fixing plates, the sliding rod is movably inserted in the group of fixing shaft sleeves, the front end of the spray head is movably hinged with the second connecting rod, the mounting angle seats are respectively mounted at the bottoms of the fixed plates, the spray head is movably hinged on the mounting angle seats, and the top of the spray head is movably hinged with the sliding rod.
Further, a material guide plate is installed at the front end of the material conveying installation frame.
Furthermore, the front ends of the first active screening roller shaft, the second active screening roller shaft and the third active screening roller shaft are respectively provided with a first transmission chain tooth, and a first transmission chain is sleeved on the first transmission chain.
Furthermore, a first connecting rod is movably hinged between the driving transmission gear and the group of opposite transmission gears, and a second connecting rod is movably hinged between the group of opposite transmission gears and the driven transmission gears respectively.
Further, the driving screening pieces in a plurality of different gaps are respectively and uniformly installed on the driving screening roller shaft I, the driving screening roller shaft II and the driving screening roller shaft III, and the driven screening pieces in a plurality of different gaps are respectively and uniformly installed on the three groups of driven screening roller shafts.
Further, the screening feed bin is opened respectively on the front surface with three corresponding spouts of group driven screening roller, driven screening roller passes through slider slidable mounting respectively on the spout, and slider upper end and screw fixed connection.
Furthermore, a transmission belt pulley is respectively installed at the front end of the adjusting screw rod, and a transmission belt II is sleeved on the transmission belt pulley.
Furthermore, a second transmission chain tooth is respectively installed at the front end of the rotating shaft, and a second transmission chain is sleeved on the second transmission chain.
Further, the spray header is communicated with an external water pipe through a connecting hose.
Further, the bottoms of the first storage bin, the second storage bin, the third storage bin and the fourth storage bin are respectively and movably hinged with an electric bottom cover.
The invention provides a hot aggregate screening device of an asphalt concrete mixing building, which has the following beneficial effects that hot aggregates entering a screening bin can be stirred through a feeding mechanism positioned at a feeding port, so that the hot aggregates can be uniformly and evenly spread into the screening bin, the subsequent roller screening treatment is convenient, a stepped screening mechanism can be used for stepped screening of the hot aggregates entering the screening bin, a screening roller shaft is adopted for screening, the screening precision is higher, the gap between a driving screening roller shaft and a driven screening roller shaft is adjustable, and the driving screening roller shaft and the driven screening roller shaft can be cleaned in all directions by matching with a cleaning mechanism, so that the hot aggregate screening device is convenient to use.
Drawings
FIG. 1 is a schematic diagram of a hot aggregate screening device of an asphalt concrete mixing plant according to the invention.
Fig. 2 is a top view of the feed mechanism of the present invention.
Fig. 3 is a front view of a screening silo according to the invention.
Fig. 4 is a schematic transmission diagram of the driving transmission gear, the transmission gear and the driven transmission gear according to the invention.
Figure 5 is a schematic view of the gap adjustment for the primary screening roller and the secondary screening roller according to the present invention.
FIG. 6 is a schematic view of the lead screw drive of the present invention.
FIG. 7 is a screening illustration of a primary screening roller according to the present invention.
FIG. 8 is a schematic diagram of the second active screening roller according to the present invention.
Fig. 9 is a schematic diagram of the active screening roller shaft three screening according to the present invention.
FIG. 10 is a schematic view of a cleaning mechanism according to the present invention.
In the figure: 1. screening a bin; 2. a first storage bin; 3. a second storage bin; 4. a third storage bin; 5. a fourth storage bin; 6. a feed inlet; 7. a transport mounting; 8. a drive motor; 9. a driving conveying roller; 10. a driven transfer roller; 11. a conveyor belt; 12. a driving gear; 13. a material stirring shaft; 14. a driven gear; 15. material shifting teeth; 16. a first belt pulley; 17. actively screening the first roll shaft; 18. a second belt pulley; 19. a first transmission belt; 20. a second roller shaft is actively screened; 21. actively screening a roll shaft III; 22. a driving transmission gear; 23. a transmission gear; 24. a driven screening roller shaft; 25. a driven transmission gear; 26. adjusting the motor; 27. adjusting the screw rod; 28. an external thread; 29. a nut; 30. a rotating electric machine; 31. a rotating shaft; 32. a first connecting rod; 33. a second connecting rod; 34. a fixing plate; 35. fixing the shaft sleeve; 36. a slide bar; 37. mounting an angle seat; 38. a shower head; 39. a material guide plate; 40. a first transmission chain tooth; 41. a first transmission chain; 42. a first connecting rod; 43. a second connecting rod; 44. an active screening sheet; 45. a driven sieve sheet; 46. a chute; 47. a slider; 48. a drive pulley; 49. a second transmission belt; 50. a second transmission chain tooth; 51. a second transmission chain; 52. a connecting hose; 53. electric bottom cover.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings, as shown in FIGS. 1-10: a hot aggregate screening device for an asphalt concrete mixing plant comprises a screening bin 1, wherein a first storage bin 2, a second storage bin 3, a third storage bin 4 and a fourth storage bin 5 are sequentially arranged at the bottom in the screening bin 1 along the length direction of the screening bin, a feeding hole 6 is formed in the front end of the screening bin 1, a feeding mechanism is arranged at the position of the feeding hole 6, a step-by-step screening mechanism is arranged in the screening bin 1, and a cleaning mechanism is arranged on the step-by-step screening mechanism;
the feeding mechanism comprises a conveying mounting frame 7, a driving motor 8, a driving conveying roller 9, a driven conveying roller 10, a conveying belt 11, a driving gear 12, a material stirring shaft 13, a driven gear 14 and a plurality of material stirring teeth 15, the conveying mounting frame 7 is installed at the feeding port 6, the driving motor 8 is horizontally installed on one side of the rear end of the conveying mounting frame 7, the driving conveying roller 9 is movably inserted into one end of the conveying mounting frame 7, the front end of the driving conveying roller is connected with the rotating end of the driving motor 8, the driven conveying roller 10 is movably inserted into the other end of the conveying mounting frame 7, the front end of the driven conveying roller extends out of the conveying mounting frame 7, the conveying belt 11 is sleeved on the driving conveying roller 9 and the driven conveying roller 10, the driving gear 12 is installed on the driven conveying roller 10, the material stirring shaft 13 is movably installed at the front end, the material poking gear is meshed with the driving gear 12, and a plurality of material poking teeth 15 are uniformly arranged on the material poking shaft 13;
the grading screening mechanism comprises a belt pulley I16, a driving screening roller shaft I17, a belt pulley II 18, a transmission belt I19, a driving screening roller shaft II 20, a driving screening roller shaft III 21, three driving transmission gears 22, a group of opposite transmission gears 23, three groups of driven screening roller shafts 24, a driven transmission gear 25, an adjusting motor 26, three adjusting screw rods 27, a group of opposite external threads 28 and a group of screws 29, wherein the belt pulley I16 is arranged at the front end of the driven transmission roller 10, the driving screening roller shaft I17 is movably inserted into the screening bin 1, the front end of the driving screening roller shaft I extends out of the screening bin 1 and is positioned above the first storage bin 2, the belt pulley II 18 is arranged at the front end of the driving screening roller shaft I17, the transmission belt I19 is sleeved on the belt pulley I16 and the belt pulley II 18, the driving screening roller shaft II 20 is movably inserted into the screening bin 1, and above the second storage bin 3, the third driving screening roller shaft 20 is movably inserted in the screening bin 1, the front end of the third driving screening roller shaft extends out of the screening bin 1 and is above the third storage bin 4, three driving transmission gears 22 are respectively installed on the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21, a group of transmission gears 23 are arranged on two sides of the driving transmission gears 22 and are respectively meshed with the driving transmission gears 22, three groups of driven screening roller shafts 24 are respectively movably inserted in the screening bin 1, the front ends of the three driven screening roller shafts extend out of the screening bin 1 and are arranged on two sides of the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21, the driven transmission gears 25 are installed at the front ends of the driven screening roller shafts 24 and are meshed with the transmission gears 23, the adjusting motor 26 is horizontally installed, the three adjusting screw rods 27 are respectively and movably arranged on the front surface of the screening bin 1, one adjusting screw rod 27 is connected with the rotating end of the adjusting motor 26, a group of opposite external threads 28 are respectively tapped at two ends of the adjusting screw rod 27, and a group of nuts 29 are respectively sleeved on the group of opposite external threads 28;
the cleaning mechanism comprises a rotary motor 30, three rotary shafts 31, a first connecting rod 32, a second connecting rod 33, three fixing plates 34, a group of fixing shaft sleeves 35, a sliding rod 36, a plurality of mounting angle seats 37 and a spray head 38, wherein the rotary motor 30 is horizontally arranged on one side of the rear surface of the screening bin 1, the three rotary shafts 31 are respectively movably inserted at the top in the screening bin 1, the front end of the rotary motor extends out of the screening bin 1, one rotary shaft 31 is connected with the rotary end of the rotary motor 30, the first connecting rod 32 is arranged on the rotary shaft 31, the second connecting rod 33 is movably hinged at the front end of the first connecting rod 32, the three fixing plates 34 are respectively arranged at the top in the screening bin 1, the group of fixing shaft sleeves 35 is arranged at the bottom of the fixing plates 34, the sliding rod 36 is movably inserted in the group of fixing shaft sleeves 35, the front end of the sliding rod is, the spray header 38 is movably hinged on the mounting corner seat 37, and the top part of the spray header is movably hinged with the sliding rod 36.
The front end of the feeding and mounting frame 7 is provided with a material guide plate 39.
The front ends of the first driving screening roll shaft 17, the second driving screening roll shaft 20 and the third driving screening roll shaft 21 are respectively provided with a first transmission chain tooth 40, and a first transmission chain 41 is sleeved on the first transmission chain 40.
A first connecting rod 42 is movably hinged between the driving transmission gear 22 and the group of opposite transmission gears 23, and a second connecting rod 43 is movably hinged between the group of opposite transmission gears 23 and the driven transmission gear 25 respectively.
The driving screening roller shafts 17, the driving screening roller shafts 20 and the driving screening roller shafts 21 are respectively and uniformly provided with a plurality of driving screening sheets 44 with different gaps, and the three groups of driven screening roller shafts 24 are respectively and uniformly provided with a plurality of driven screening sheets 45 with different gaps.
The front surface of the screening bin 1 is respectively provided with sliding grooves 46 corresponding to the three groups of driven screening roller shafts 24, the driven screening roller shafts 24 are respectively arranged on the sliding grooves 46 in a sliding mode through sliding blocks 47, and the upper ends of the sliding blocks 47 are fixedly connected with the nuts 29.
The front ends of the adjusting screw rods 27 are respectively provided with a transmission belt pulley 48, and a transmission belt II 49 is sleeved on the transmission belt pulley 48.
The front ends of the rotating shafts 31 are respectively provided with a second transmission chain tooth 50, and the second transmission chain 50 is sleeved with a second transmission chain 51.
The shower head 38 communicates with an external water pipe through a connection hose 52.
The bottoms of the first storage bin 2, the second storage bin 3, the third storage bin 4 and the fourth storage bin 5 are respectively and movably hinged with an electric bottom cover 53.
The working principle of the embodiment is as follows: the electric equipment used by the device is controlled by an external controller, a first storage bin 2, a second storage bin 3, a third storage bin 4 and a fourth storage bin 5 are sequentially arranged at the bottom in a screening bin 1 along the length direction of the screening bin, and are respectively used for storing screened sand and stones with different granularities, including a sand grain type, a fine grain type, a medium grain type and a coarse grain type, and the hot aggregate dried and heated by a drying cylinder falls on a conveyor belt 11 through a lifter;
during feeding: the driving motor 8 firstly starts to work, the driving transmission roller 9 on the rotating end is driven to start to rotate, the driving transmission roller 9 is movably inserted into one end of the transmission mounting frame 7 through a fastening bearing, the driven transmission roller 10 is movably inserted into the other end of the transmission mounting frame 7 through the fastening bearing, the front end of the driving transmission roller extends out of the transmission mounting frame 7, the transmission belt 11 is sleeved on the driving transmission roller 9 and the driven transmission roller 10, the driving motor 8 can drive the thermal aggregate on the transmission belt 11 to be conveyed forwards at a constant speed, the driving gear 12 is installed on the driven transmission roller 10, the material stirring shaft 13 is movably installed at the front end of the transmission mounting frame 7 through the fastening bearing, the driven gear 14 is installed at the front end of the material stirring shaft 13 and is meshed with the driving gear 12, the driven transmission roller 10 can drive the material stirring shaft 13 to rotate simultaneously, the rotation direction of the material stirring shaft 13 is, the material stirring shaft 13 can evenly spread the hot aggregate into the screening bin 1 to facilitate the subsequent screening treatment by a rolling shaft, the front end of the material conveying mounting frame 7 is provided with a material guide plate 39, and the evenly spread hot aggregate falls on the grading screening mechanism to carry out the grading screening treatment;
when grading and screening are carried out: the first belt pulley 16 is installed at the front end of the driven conveying roller 10, the first driving screening roller shaft 17 is movably inserted into the screening bin 1 through a fastening bearing, the front end of the first driving screening roller shaft 17 extends out of the screening bin 1 and is positioned above the first storage bin 2, the second belt pulley 18 is installed at the front end of the first driving screening roller shaft 17, the first transmission belt 19 is sleeved on the first belt pulley 16 and the second belt pulley 18, the first driving screening roller shaft 17 is driven to rotate when the driven conveying roller 10 rotates, the second driving screening roller shaft 20 is movably inserted into the screening bin 1 through the fastening bearing, the front end of the second driving screening roller shaft 20 extends out of the screening bin 1 and is positioned above the third storage bin 4, the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21 are respectively provided with a first transmission gear 40 at the front ends thereof, the first transmission chain 40 is sleeved with a first transmission chain 41, the first driving screening roller shaft 17 rotates while the second driving screening roller shaft 20 and the third driving screening roller shaft 21 can be driven to rotate by the first transmission chain 41, three driving transmission gears 22 are respectively installed on the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21, a group of opposite transmission gears 23 are positioned on two sides of the driving transmission gears 22 and are respectively meshed with the driving transmission gears 22, three groups of driven screening roller shafts 24 are respectively movably inserted in the screening bin 1 through fastening bearings, the front ends of the three groups of driven screening roller shafts extend out of the screening bin 1 and are positioned on two sides of the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21, the driven transmission gears 25 are installed at the front ends of the driven screening roller shafts 24 and are meshed with the transmission gears 23, and a first connecting rod 42 is, a second connecting rod 43 is movably hinged between the group of opposite transmission gears 23 and the group of opposite driven transmission gears 25, as shown in fig. 3, the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21 rotate while the driven screening roller shaft 24 can be driven by the transmission gears 23 to rotate, a plurality of driving screening sheets 44 with different gaps are respectively and uniformly installed on the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21, a plurality of driven screening sheets 45 with different gaps are respectively and uniformly installed on the three groups of driven screening roller shafts 24, as shown in fig. 7-9, the driving screening sheets 44 and the driven screening sheets 45 with different gaps can carry out stepped screening on hot aggregates, and screening by adopting the screening roller shafts, the screening precision is higher, and the hot aggregate after stepped screening falls on the first storage bin 2 and the second storage bin 3 in different steps, The bottoms of the first storage bin 2, the second storage bin 3, the third storage bin 4 and the fourth storage bin 5 are respectively and movably hinged with an electric bottom cover 53, so that the subsequent mixing and use are facilitated;
during cleaning: when the screening roller shafts need to be cleaned, the adjusting motor 26 starts to work firstly, three adjusting screw rods 27 are movably mounted on the front surface of the screening bin 1 through fastening bearings respectively, one adjusting screw rod 27 is connected with the rotating end of the adjusting motor 26, a group of opposite external threads 28 are respectively tapped at two ends of the adjusting screw rod 27, a group of nuts 29 are respectively sleeved on a group of opposite external threads 28, the front ends of the adjusting screw rods 27 are respectively provided with a transmission belt pulley 48, the transmission belt pulley 48 is sleeved with a transmission belt II 49, as shown in fig. 6, the adjusting motor 26 drives the three adjusting screw rods 27 to start to rotate, sliding grooves 46 corresponding to three groups of driven screening roller shafts 24 are respectively formed on the front surface of the screening bin 1, the driven screening roller shafts 24 are respectively mounted on the sliding grooves 46 through sliders 47 in a sliding manner, the upper ends of the sliders 47 are fixedly connected with the nuts 29, the three groups of driven screening roller shafts 24 can be driven to be respectively far away from a first driving screening roller shaft 17, a second driving screening roller shaft 20 and a third driving screening roller shaft 21, at the moment, gaps between a first driving screening sheet 44 and a second driven screening sheet 45 become large, and mixed sundries fall down, the first driving screening roller shaft 17, the second driving screening roller shaft 20 and the third driving screening roller shaft 21 can drive the driven screening roller shafts 24 to rotate through transmission gears 23, the rotating motor 30 starts to work simultaneously, three rotating shafts 31 are movably inserted into the top of the screening bin 1 through fastening bearings respectively, the front ends of the three rotating shafts extend out of the screening bin 1, one rotating shaft 31 is connected with the rotating end of the rotating motor 30, a second transmission chain 50 is respectively installed at the front end of the rotating shaft 31, a second transmission chain 51 is sleeved on the second transmission chain 50, the rotating motor 30 drives the three rotating shafts 31 to, a second connecting rod 33 is movably hinged at the front end of the first connecting rod 32, three fixing plates 34 are respectively installed at the top part in the screening bin 1, a group of fixing shaft sleeves 35 are installed at the bottom parts of the fixing plates 34, a sliding rod 36 is movably inserted in the group of fixing shaft sleeves 35, the front end of the sliding rod is movably hinged with the second connecting rod 33, the rotating shaft 31 can pull the sliding rod 36 to reciprocate in the group of fixing shaft sleeves 35 while rotating, a plurality of mounting angle seats 37 are respectively installed at the bottom parts of the fixing plates 34, a spray head 38 is movably hinged on the mounting angle seats 37, the top part of the spray head is movably hinged with the sliding rod 36, the spray head 38 is communicated with an external water pipe through a connecting hose 52, the sliding rod 36 drives the spray head 38 to swing back and forth, meanwhile, the driving motor 8 drives the first driving screening roller shaft 17, the second driving screening roller shaft 20, the third driving screening, Initiative screening roller two 20, initiative screening roller three 21 and three groups of driven screening rollers 24 carry out all-round washing, after the washing is accomplished, accommodate motor 26 reversal, drive three accommodate the lead screw 27 and reset, can dial the material to getting into the hot aggregate in screening feed bin 1 through the feed mechanism that is located feed inlet 6 department, make the even fair share of hot aggregate get into in screening feed bin 1, the follow-up roller screening of being convenient for is handled, the branch rank screening mechanism can carry out the branch rank screening to the hot aggregate that gets into in screening feed bin 1, screen through adopting the screening roller, screening precision is higher, and initiative screening roller and driven screening roller clearance are adjustable, cooperation wiper mechanism, can all-round wash between initiative screening roller and the driven screening roller, and convenient to use.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (10)
1. A hot aggregate screening device of an asphalt concrete mixing plant comprises a screening bin (1), wherein a first storage bin (2), a second storage bin (3), a third storage bin (4) and a fourth storage bin (5) are sequentially arranged at the bottom of the screening bin (1) along the length direction of the screening bin, and the hot aggregate screening device is characterized in that a feeding hole (6) is formed in the upper front end of the screening bin (1), a feeding mechanism is arranged at the feeding hole (6), a step-by-step screening mechanism is arranged in the screening bin (1), and a cleaning mechanism is arranged on the step-by-step screening mechanism;
the feeding mechanism comprises a conveying mounting frame (7), a driving motor (8), a driving conveying roller (9), a driven conveying roller (10), a conveying belt (11), a driving gear (12), a material stirring shaft (13), a driven gear (14) and a plurality of material stirring teeth (15), the conveying mounting frame (7) is installed at the position of a feeding port (6), the driving motor (8) is horizontally installed at one side of the rear end of the conveying mounting frame (7), the driving conveying roller (9) is movably inserted into one end of the conveying mounting frame (7), the front end of the driving conveying roller is connected with the rotating end of the driving motor (8), the driven conveying roller (10) is movably inserted into the other end of the conveying mounting frame (7), the front end of the driven conveying roller extends out of the conveying mounting frame (7), the conveying belt (11) is sleeved on the driving conveying roller (9) and the driven conveying roller (10), the driving gear (12), the material stirring shaft (13) is movably arranged at the front end of the conveying mounting frame (7), the driven gear (14) is arranged at the front end of the material stirring shaft (13) and is mutually meshed with the driving gear (12), and the material stirring teeth (15) are uniformly arranged on the material stirring shaft (13);
the grading screening mechanism comprises a belt pulley I (16), a driving screening roller shaft I (17), a belt pulley II (18), a transmission belt I (19), a driving screening roller shaft II (20), a driving screening roller shaft III (21), three driving transmission gears (22), a group of relative transmission gears (23), three groups of driven screening roller shafts (24), driven transmission gears (25), an adjusting motor (26), three adjusting screw rods (27), a group of relative external threads (28) and a group of nuts (29), wherein the belt pulley I (16) is installed at the front end of the driven transmission roller (10), the driving screening roller shaft I (17) is movably inserted into the screening bin (1), the front end of the driving screening roller shaft I (17) extends out of the screening bin (1) and is positioned above the first storage bin (2), the belt pulley II (18) is installed at the front end of the driving screening roller shaft I (17), the transmission belt I (19) is sleeved on the belt pulley I (16) and the belt pulley II, the active screening roller shaft II (20) is movably inserted in the screening bin (1), the front end of the active screening roller shaft II (20) extends out of the screening bin (1) and is positioned above the second storage bin (3), the active screening roller shaft III (20) is movably inserted in the screening bin (1), the front end of the active screening roller shaft III (20) extends out of the screening bin (1) and is positioned above the third storage bin (4), three active transmission gears (22) are respectively installed on the active screening roller shaft I (17), the active screening roller shaft II (20) and the active screening roller shaft III (21), a group of opposite transmission gears (23) are positioned on two sides of the active transmission gears (22) and are respectively meshed with the active transmission gears (22), three groups of driven screening roller shafts (24) are respectively movably inserted in the screening bin (1), the front end of the active screening bin (1) extends out of the screening bin (17), the active screening roller shaft II (20) and two sides of the active screening roller shaft III, the screening device is characterized in that the driven transmission gear (25) is installed at the front end of the driven screening roller shaft (24) and is meshed with the transmission gear (23), the adjusting motor (26) is horizontally installed on one side of the front surface of the screening bin (1), three adjusting screw rods (27) are movably installed on the front surface of the screening bin (1) respectively, one adjusting screw rod (27) is connected with the rotating end of the adjusting motor (26), a group of opposite external threads (28) are respectively tapped at two ends of the adjusting screw rods (27), and a group of screw nuts (29) are respectively sleeved on the group of opposite external threads (28);
the cleaning mechanism comprises a rotating motor (30), three rotating shafts (31), a first connecting rod (32), a second connecting rod (33), three fixing plates (34), a set of fixing shaft sleeves (35), a sliding rod (36), a plurality of mounting angle seats (37) and a spray head (38), wherein the rotating motor (30) is horizontally arranged on one side of the rear surface of the screening bin (1), the three rotating shafts (31) are movably inserted into the top of the inside of the screening bin (1) respectively, the front end of the three rotating shafts extends out of the screening bin (1), one rotating shaft (31) is connected with the rotating end of the rotating motor (30), the first connecting rod (32) is arranged on the rotating shaft (31), the second connecting rod (33) is movably hinged at the front end of the first connecting rod (32), the three fixing plates (34) are arranged at the top of the inside of the screening bin (1) respectively, the set of fixing shaft sleeves (35, the sliding rod (36) is movably inserted in the group of fixed shaft sleeves (35), the front end of the sliding rod is movably hinged with the second connecting rod (33), the plurality of mounting angle seats (37) are respectively mounted at the bottom of the fixed plate (34), the spray header (38) is movably hinged on the mounting angle seats (37), and the top of the spray header is movably hinged with the sliding rod (36).
2. An asphalt concrete mixing plant hot aggregate screening device according to claim 1, characterized in that the front end of the feed mounting frame (7) is provided with a material guide plate (39).
3. The hot aggregate screening device of the asphalt concrete mixing plant according to claim 1, wherein the front ends of the first active screening roller shaft (17), the second active screening roller shaft (20) and the third active screening roller shaft (21) are respectively provided with a first transmission chain tooth (40), and the first transmission chain (40) is sleeved with a first transmission chain (41).
4. The hot aggregate screening device of the asphalt concrete mixing plant according to claim 1, wherein a first connecting rod (42) is movably hinged between the driving transmission gear (22) and one group of the opposite transmission gears (23), and a second connecting rod (43) is movably hinged between one group of the opposite transmission gears (23) and the driven transmission gear (25).
5. The hot aggregate screening device of asphalt concrete mix building according to claim 1, characterized in that a plurality of driving screening sheets (44) with different gaps are respectively and uniformly installed on the driving screening roller shaft I (17), the driving screening roller shaft II (20) and the driving screening roller shaft III (21), and a plurality of driven screening sheets (45) with different gaps are respectively and uniformly installed on the three groups of driven screening roller shafts (24).
6. The hot aggregate screening device of asphalt concrete mixing plant according to claim 1, characterized in that the front surface of the screening bin (1) is provided with sliding grooves (46) corresponding to the three groups of driven screening rollers (24), the driven screening rollers (24) are slidably mounted on the sliding grooves (46) through sliding blocks (47), and the upper ends of the sliding blocks (47) are fixedly connected with the screw nuts (29).
7. The hot aggregate screening device of the asphalt concrete mixing plant according to claim 1, wherein the front ends of the adjusting screw rods (27) are respectively provided with a transmission belt pulley (48), and a second transmission belt (49) is sleeved on the transmission belt pulley (48).
8. The hot aggregate screening device of the asphalt concrete mixing plant according to claim 1, wherein the front ends of the rotating shafts (31) are respectively provided with a second transmission chain (50), and the second transmission chain (51) is sleeved on the second transmission chain (50).
9. An asphalt concrete mixing plant hot aggregate screening device according to claim 1, characterized in that the spray header (38) is in communication with an external water pipe through a connecting hose (52).
10. The hot aggregate screening device of the asphalt concrete mixing plant according to claim 1, wherein the bottoms of the first storage bin (2), the second storage bin (3), the third storage bin (4) and the fourth storage bin (5) are respectively and movably hinged with an electric bottom cover (53).
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