CN214613427U - Asphalt concrete mixing station based on sieve mesh grading adjustment - Google Patents
Asphalt concrete mixing station based on sieve mesh grading adjustment Download PDFInfo
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- CN214613427U CN214613427U CN202120462454.6U CN202120462454U CN214613427U CN 214613427 U CN214613427 U CN 214613427U CN 202120462454 U CN202120462454 U CN 202120462454U CN 214613427 U CN214613427 U CN 214613427U
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Abstract
The utility model belongs to the technical field of pavement material processing equipment, in particular to an asphalt concrete mixing station based on sieve mesh grading adjustment, which comprises a storage bin, a cold material bin and a feeding device; the feeding device conveys the raw materials in the storage bin to the cold bin, the lower part of the cold bin is provided with a conveying device, the conveying device is connected with a feed inlet of the roller, a discharge outlet of the roller is connected with one end of a lifting device, the other end of the lifting device is connected with a vibrating screen, a plurality of hot bins are arranged below the vibrating screen, the lower parts of the hot bins are provided with weighing devices, stirring pots are arranged below the weighing devices, and finished product bins are arranged below the stirring pots; the cold material bin comprises a first cold material bin and a second cold material bin which are used for containing machine-made sand, and further comprises a third cold material bin which is used for containing broken stones, and the first cold material bin and the second cold material bin are filled with machine-made sand with different particle size ranges. The coarse dense-graded asphalt concrete and the fine dense-graded asphalt concrete can be produced by switching, and the product quality can be better ensured compared with the prior sand which is produced only by a first-grade standard machine.
Description
Technical Field
The utility model belongs to the technical field of the road surface material processing equipment, concretely relates to bituminous concrete mixes station based on hierarchical adjustment of sieve mesh.
Background
Asphalt concrete is widely applied to many fields such as highways, urban roads and the like, and the quality of asphalt concrete determines the service life and the service level of a pavement. Therefore, controlling the production quality of asphalt concrete plays a crucial role.
At present, in the highway design documents of China, the structural types of the asphalt pavement surface layers are generally divided into a coarse type and a fine type. The percentage of coarse and fine aggregates is controlled by the passing rate of the coarse and fine key sieve pores to achieve a stable structure under the optimal proportion, so that the strength of the asphalt pavement is effectively controlled, and the pavement performances such as high-temperature stability, water stability, durability and the like of the pavement are improved. Therefore, strict control of the critical screen opening passing rate is the key point of improving the quality of the asphalt concrete by the mixing station.
In China, a general mixing station controls gradation to produce products with different requirements by adjusting the proportion (production mixing proportion) of each hot material bin, and in the actual production process, due to the fact that the cold material specification of a cold material bin is unstable and the mixing proportion cannot be constant, problems of material waiting, material overflowing and the like can be caused frequently, production efficiency is seriously influenced, production cost is improved, and the quality of finished products is difficult to control.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a bituminous concrete mixes station based on sieve mesh grading adjustment, should mix the station and can reduction in production cost, improve bituminous concrete production quality.
In order to achieve the above object, the utility model discloses a main technical scheme include:
the utility model provides an asphalt concrete mixing station based on sieve mesh grading adjustment, which comprises a storage bin, a cold material bin, a feeding device, a conveying device, a roller and a hot material bin; the feeding device conveys the raw materials in the storage bin to the cold bin, the lower part of the cold bin is provided with a conveying device, the conveying device is connected with a feed inlet of the roller, a discharge outlet of the roller is connected with one end of a lifting device, the other end of the lifting device is connected with a vibrating screen, a plurality of hot bins are arranged below the vibrating screen, the lower parts of the hot bins are provided with weighing devices, stirring pots are arranged below the weighing devices, and finished product bins are arranged below the stirring pots; the cold material bin comprises a first cold material bin and a second cold material bin which are used for containing machine-made sand, and further comprises a third cold material bin which is used for containing broken stones, and the first cold material bin and the second cold material bin are filled with machine-made sand with different particle size ranges.
Furthermore, the grain diameter of the machine-made sand in the first cold storage bin is 0-1.18mm, and the grain diameter of the machine-made sand in the second cold storage bin is 1.18-2.36 mm.
Furthermore, the number of the third cold material bins is a plurality of, and the plurality of third cold material bins are used for containing the gravel with different particle size ranges.
Further, the storage silo is including the first storage silo, the second storage silo that are used for storing mechanism sand, still including the third storage silo that is used for storing the rubble, and first storage silo, second storage silo and third storage silo set up side by side.
Further, the grain diameter of the machine-made sand stored in the first storage bin is 0-1.18mm, and the grain diameter of the machine-made sand stored in the second storage bin is 1.18-2.36 mm.
Further, the number of the third storage bins is a plurality, and the third storage bins are used for storing the crushed stones with different particle size ranges.
The utility model has the advantages that: the utility model provides a pair of bituminous concrete mixes station based on sieve mesh grading adjustment, because to the cold feed bin of machine-made sand that the particle diameter is 0-3mm, divide into the particle diameter and be 0-1.18mm and two grades of machine-made sand of 1.18-2.36mm cold feed bins, can switch production coarse type close gradation to join in marriage and the bituminous concrete is joined in marriage to the fine type close gradation in actual production, and only one grade of specification machine-made sand can guarantee product quality more than the preceding. The utility model discloses can effectively reduce material waiting, the flash problem of mechanism sand, change for a short time to current device, reach the effect of practicing thrift the cost, being convenient for control product quality.
Drawings
Fig. 1 is the structure schematic diagram of the asphalt concrete mixing station based on sieve mesh grading adjustment of the utility model.
[ description of reference ]
1: a storage bin; 1-1: a first storage bin; 1-2: a second storage bin; 1-3: a third storage bin; 2: a cold storage bin; 2-1: a first cold storage bin; 2-2: a second cold storage bin; 2-3: a third cold storage bin; 3: a feeding device; 4: a conveying device; 5: a drum; 6: a lifting device; 7: vibrating screen; 8: a hot material bin; 9: a weighing device; 10: a stirred pot; 11: a finished product warehouse; 12: a material conveying trolley; 13: a material conveying vehicle.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Example (b):
referring to fig. 1, the utility model provides an asphalt concrete mixes station based on hierarchical adjustment of sieve mesh. The mixing station comprises a storage bin 1, a cold material bin 2, a feeding device 3, a conveying device 4, a roller 5 and a hot material bin 8.
Wherein, loading attachment 3 transports the raw materials in the storage silo 1 to cold feed bin 2, and the lower part of cold feed bin 2 sets up conveyer 4, and conveyer 4 is connected with the feed inlet of cylinder 5, and the discharge gate of cylinder 5 is connected with hoisting device 6's one end, and hoisting device 6's the other end is connected with shale shaker 7, and the below intercommunication of shale shaker 7 has a plurality of hot feed bins 8, delivers to different hot feed bins 8 with the material of different particle diameters through shale shaker 7. The lower part of the hot material bin 8 is provided with a weighing device 9, a stirring pot 10 is arranged below the weighing device 9, and a finished product bin 11 is arranged below the stirring pot 10. The retaining wall is arranged below the finished product bin 11 to prevent the products from flowing out. The cold material bin 2 comprises a first cold material bin 2-1 and a second cold material bin 2-2 used for containing machine-made sand, and further comprises a third cold material bin 2-3 used for containing broken stones, and the first cold material bin 2-1 and the second cold material bin 2-2 are filled with machine-made sand with different particle size ranges.
Specifically, the grain size of the machine-made sand in the first cooling bin 2-1 is 0-1.18mm, and the grain size of the machine-made sand in the second cooling bin 2-2 is 1.18-2.36 mm. The number of the third cold storage bins 2-3 is multiple, and the multiple third cold storage bins 2-3 are used for containing broken stones with different particle size ranges. The particle size range of the crushed stones in the third cold storage bin 2-3 is determined according to the product requirements.
Further, the storage bin 1 comprises a first storage bin 1-1 and a second storage bin 1-2 used for storing machine-made sand, and further comprises a third storage bin 1-3 used for storing broken stones, wherein the first storage bin 1-1, the second storage bin 1-2 and the third storage bin 1-3 are arranged side by side.
Specifically, the grain size of the machine-made sand stored in the first storage bin 1-1 is 1-1.18mm, and the grain size of the machine-made sand stored in the second storage bin 1-2 is 1.18-2.36 mm. The number of the third storage bins 1-3 is multiple, and the multiple third storage bins 1-3 are used for storing the crushed stones with different particle size ranges. The particle size range of the broken stones in the third storage bin 1-3 is determined according to the product requirements.
Further, the utility model discloses a loading attachment 3 is the material loading forklift. Of course, a feeding pipeline is also possible, and each storage bin 1 is communicated with one cold bin 2 through the feeding pipeline.
Further, the utility model discloses a conveyer 4 is the conveyer belt, and cylinder 5 is connected to the one end of conveyer belt for transport the cold burden in the cold burden storehouse 2 to cylinder 5.
Further, the utility model discloses a hoisting device 6 is supporting aggregate lifting machine.
Further, the utility model discloses a cold charge storehouse 2's the ejection of compact, hot feed bin 8's the ejection of compact and weighing device 9 all control through control system. The control system firstly controls the discharging ratio of each cold bin and then controls the discharging ratio of each hot bin according to the product requirements, and finally the required finished product is produced.
The utility model discloses an asphalt concrete mixes station based on sieve mesh grading adjustment, including storage silo 1, cold feed bin 2 and hot feed bin 8. In specific implementation, the material is prepared in the storage bin 1 according to two grades of cold material machine-made sand, namely the first storage bin 1-1 is used for storing machine-made sand with the particle size of 0-1.18mm, and the second storage bin 1-2 is used for storing machine-made sand with the particle size of 1.18-2.36 mm; of course, the first storage bin 1-1 can store the machine-made sand with the grain diameter of 1.18-2.36mm, and the second storage bin 1-2 can store the machine-made sand with the grain diameter of 0-1.18 mm.
The cold material bin 2 is adjusted to be 0-1.18mm and 1.18-2.36mm from the original first grade of 0-3mm, namely, the cold material bin is directly divided into two grades of cold materials when the cold material bin 2 is used for feeding, and cold material machine-made sand with the grain diameter of 0-1.18mm and 1.18-2.36mm respectively enters the first cold material bin 2-1 and the second cold material bin 2-2, enters the roller 5 through the conveying device 4 for heating and then is lifted to the vibrating screen 7 through the lifting device 6. The hot materials entering the hot material bins 8 are synchronously adjusted, and the cold materials enter different hot material bins 8 through the vibrating screen 7 in different grades, namely the hot materials with the particle size of 0-3mm in the original hot material bins are changed into hot materials consisting of two grades of cold materials.
Through foretell improvement back, according to the actual production of mix proportion, can effectively reduce the material waiting of mechanism sand, the flash problem, practice thrift the cost of enterprises. The mix proportion is verified to be qualified, and compared with the test data of the asphalt mixture produced before improvement, the quality of the optimized concrete is obviously improved according to the test data, and specific numerical values can be seen in the following table.
Test data comparison table before and after grading adjustment of asphalt mixture sieve pores
As can be seen from the above table, the quality of the optimized concrete is obviously improved by comparing the test data of the asphalt mixture produced when the sieve mesh is graded and adjusted with the test data of the asphalt mixture produced when the sieve mesh is not improved. The cold burden metering ratio after the adjustment in the upper table is only an example, and other metering ratios can also be adopted during specific implementation, and the utility model discloses do not do the restriction to this.
The utility model relates to a bituminous concrete mixes construction method of station based on hierarchical adjustment of sieve mesh, including following construction steps:
step 1: when raw materials, namely cold materials, are prepared, machine-made sand with specifications of 0-1.18mm and 1.18-2.36mm is customized according to requirements, a small amount of machine-made sand is produced for sampling for testing before batch customization, and the blending proportion is determined. Before cold materials are prepared, two-grade warehouse storage of the raw materials entering the field is realized. Namely, the first storage bin 1-1 stores the machine-made sand with the grain diameter of 0-1.18mm, and the second storage bin 1-2 stores the machine-made sand with the grain diameter of 1.18-2.36 mm.
Step 2: and completing the asphalt mixture mixing ratio test according to the determined reasonable mixing ratio, and recording effective test data.
And step 3: after the mix proportion test is qualified, the qualified machine-made sand is prepared according to the requirements in grades, and a stock yard is prepared in the station to finish the warehouse-by-warehouse storage.
And 4, step 4: when the forklift is used for feeding, the cold material bins need to be fed in different bins, namely, the original first-grade 0-3mm cold material bin is divided into two grades of 0-1.18mm and 1.18-2.36mm cold material bins. The forklift is used for feeding, and two grades of cold materials stored in the first storage bin 1-1 and the second storage bin 1-2 are respectively shoveled into the first cold material bin 2-1 (the particle size is 0-1.18mm) and the second cold material bin 2-2 (the particle size is 1.18-3.26 mm). The material entering the cold storage bin 2 enters the roller 5 through the conveying device 4 to be heated, and then is lifted to the vibrating screen 7 through the lifting device 6.
And 5: and (4) synchronously adjusting the hot material bin to obtain a hot material consisting of two grades of cold materials, and trial-mixing and trial-producing according to the determined proportion. The cold charge entering the roller 5 through the conveying device 4 is synchronously adjusted, and the hot charge bin 8 synchronously realizes the control of cold charge grading measurement. Namely, the original hot material bin 8 changes the hot material with the grain diameter of 0-3mm into the hot material consisting of two grades of cold materials with the grain diameters of 0-1.18mm and 1.18-2.36 mm. The hot materials in the hot material bin 8 enter a stirring pot 10 for stirring, then are conveyed to a finished product bin 11 through a material conveying trolley 12, and finally the finished products in the finished product bin 11 are conveyed to a construction site through a material conveying trolley 13.
Step 6: sampling, carrying out related tests on the finished product materials, laying test sections in a trial mode, and carrying out batch production after the finished product materials are qualified.
By adopting the technical scheme, the free switching of the types of the coarse and fine asphalt mixtures is reasonably realized, and the restriction of a single-specification machine-made sand control gear on the addition proportion of fine aggregates is solved. The control precision of an automatic production system is effectively improved, the problems of material waiting and material overflowing of operators in the production process are solved, and the production mixing efficiency is obviously improved. The yield and the quality of the asphalt concrete are improved, and the purpose of quality guarantee gain of a mixing station is achieved.
The utility model has simple structure, and can prepare materials by 0-1.18mm and 1.18-2.36mm through 0-3mm machine-made sand of improved cold materials; the cold material bin area is divided into two levels and two bins for feeding; the synchronous adjustment of the hot material bin is changed into the hot material consisting of two grades of cold materials, which is beneficial to the accurate control of the proportion of the fine aggregate, and effectively completes the switching between the coarse asphalt concrete type and the fine asphalt concrete type in the actual production, thereby finally achieving the purpose of improving the quality of finished products. The grading of hot materials in the fine aggregate hot material bin is changed through grading of cold materials, so that the grading control of the fine aggregates is realized, and the aims of optimizing production and improving the quality of asphalt concrete are fulfilled.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (6)
1. An asphalt concrete mixing station based on sieve mesh grading adjustment is characterized by comprising a storage bin (1), a cold material bin (2), a feeding device (3), a conveying device (4), a roller (5) and a hot material bin (8); the feeding device (3) conveys the raw materials in the storage bin (1) to the cold bin (2), the lower part of the cold bin (2) is provided with a conveying device (4), the conveying device (4) is connected with a feeding hole of a roller (5), a discharging hole of the roller (5) is connected with one end of a lifting device (6), the other end of the lifting device (6) is connected with a vibrating screen (7), a plurality of hot bins (8) are arranged below the vibrating screen (7), a weighing device (9) is arranged below the hot bins (8), a stirring pot (10) is arranged below the weighing device (9), and a finished product bin (11) is arranged below the stirring pot (10); the cold storage bin (2) comprises a first cold storage bin (2-1) and a second cold storage bin (2-2) which are used for containing machine-made sand, and further comprises a third cold storage bin (2-3) which is used for containing broken stones, and the first cold storage bin (2-1) and the second cold storage bin (2-2) are filled with machine-made sand with different particle size ranges.
2. The asphalt mixing station based on mesh size grading adjustment according to claim 1, characterized in that the machine-made sand grain size in the first cold silo (2-1) is 0-1.18mm and the machine-made sand grain size in the second cold silo (2-2) is 1.18-2.36 mm.
3. The asphalt mixing station based on mesh size grading adjustment according to claim 1, characterized in that the number of the third cold silos (2-3) is plural, and a plurality of the third cold silos (2-3) are used for containing crushed stone with different particle size ranges.
4. The asphalt mixing station based on sieve mesh grading adjustment according to claim 1, wherein the storage silo (1) comprises a first storage silo (1-1) for storing machine-made sand, a second storage silo (1-2), and a third storage silo (1-3) for storing crushed stone, and the first storage silo (1-1), the second storage silo (1-2), and the third storage silo (1-3) are arranged side by side.
5. The asphalt mixing station based on mesh size grading adjustment according to claim 4, characterized in that the grain size of the machine-made sand stored in the first storage silo (1-1) is 1-1.18mm, and the grain size of the machine-made sand stored in the second storage silo (1-2) is 1.18-2.36 mm.
6. An asphalt mixing station adjusted based on mesh size classification according to claim 4, characterized in that the number of said third storage silos (1-3) is plural, and a plurality of said third storage silos (1-3) are used for storing crushed stone of different particle size ranges.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178827A1 (en) * | 2022-03-23 | 2023-09-28 | 常德市三一机械有限公司 | Feeding control method and apparatus, and asphalt stirring station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178827A1 (en) * | 2022-03-23 | 2023-09-28 | 常德市三一机械有限公司 | Feeding control method and apparatus, and asphalt stirring station |
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