A low-dosage factory-mixed hot regeneration mixing plant

Abstract

The present invention discloses a low-admixture plant-mixed hot recycling mixing plant, which is applied in the technical field of asphalt mixture preparation. The present invention transforms an ordinary mixing plant by setting up a waste material cold material bin, a waste material feeding belt, a first waste material conveyor belt, a waste material elevator, a second waste material conveyor belt, a waste material metering bin, a third waste material conveyor belt and a mixture stirring pot, thereby realizing a loading method of transporting unheated waste material to the mixture stirring pot, so as to achieve the utilization of low-admixture waste material (less than 10%), reduce the purchase cost of recycling equipment, reduce the use of new materials, save production costs, and assist in improving the temperature control of the low-admixture plant-mixed mixture system, thereby facilitating better control of the subsequent loading, mixing and discharging of new and old materials, monitoring the temperature in real time and automatically adjusting it, and improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt mixture preparation, and in particular relates to a low-admixture factory-mixed hot regeneration mixing plant. Background Art

[0002] Thermal recycling technology has been developed to a relatively complete level. At present, the content of old materials is controlled at 20-30%. The recycling technology is relatively mature. However, in areas with relatively backward technology and equipment, the cost of equipping a complete set of recycling equipment is high. Ordinary mixing stations want to make use of the milling materials of the road as much as possible. In addition, since most of today's low-grade original road surfaces have undergone multiple repairs, the types of aggregates before and after are different, the types of asphalt used are different, and the properties of the same asphalt are different. In particular, the early paved roads used asphalt of poor quality. Due to these reasons, the utilization of old materials will be greatly limited.

[0003] The existing low-mix hot regeneration mixing plant has the following disadvantages when in use:

[0004] 1. In response to the above background issues, according to the current specification JTG_T5521-2019 "Technical Specifications for Highway Asphalt Pavement Regeneration", when the old material content is less than 10%, the old material needs to be heated separately and cannot be directly put into the mixing pot for mixing with the new material. Therefore, it will result in high costs for the construction of recycling equipment and cause the waste material to be discarded;

[0005] 2. As above, since the old material is not heated, it is impossible to strictly control the temperature of the new material and the mixed material during production, and it is impossible to guarantee the heating of the mixed material, the mixing temperature control, the discharge temperature, the material level, the material weight and other information, which makes it inconvenient to make timely adjustments. Summary of the Invention

[0006] The purpose of the present invention is to provide a low-dosage factory-mixed hot regeneration mixing plant, which has the following advantages:

[0007] The ordinary mixing station will be modified to transport the unheated low-content (10%) old materials to the mixing pot for mixing, so as to solve the problem of waste materials being discarded due to the high cost of building recycling equipment;

[0008] Based on the existing mixture heating, mixing temperature control and discharge temperature detection systems, certain improvements are made to the material temperature control and detection systems at various stages of production, and information collection such as material level and weight in various stages such as loading, discharging and mixing is added to facilitate timely adjustment and use.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions: a low-admixture factory-mixed hot recycling mixing building, comprising a waste material supply device, the waste material supply device comprising a waste material cold material bin, a waste material feeding belt is provided at the bottom of the waste material cold material bin, a first waste material conveying belt is provided at the bottom of the waste material feeding belt, a waste material elevator is provided at the rear side of the first waste material conveying belt, a waste material elevator is provided at the front side of the waste material elevator feed port, the waste material elevator feed port is located at the rear side of the first waste material conveying belt, a waste material chute is provided inside the waste material elevator, a second waste material conveying belt is provided at the top of the rear side of the waste material elevator, a waste material metering bin is provided at the bottom of the second waste material conveying belt, a third waste material conveying belt is provided at the bottom of the waste material metering bin, a mixture stirring pot is provided at the rear side of the third waste material conveying belt, and a discharge port is provided at the bottom of the mixture stirring pot.

[0010] By adopting the above technical solution, after transforming the ordinary mixing plant, a cold material bin for old material, a feeding belt for old material, a first conveyor belt for old material, a hoist for old material, a second conveyor belt for old material, a metering bin for old material, a third conveyor belt for old material and a mixing pot for mixture are installed, thereby realizing a loading method of transporting the unheated old material to the mixing pot for mixture, so as to achieve the utilization of old material with lower dosage (less than 10%), reduce the purchase cost of recycling equipment, reduce the use of new material, save production cost, and assist in improving the temperature control of the low dosage plant-mixed mixture system, thereby facilitating better control of the subsequent loading, mixing and discharging of new and old materials, monitoring the temperature in real time and automatically adjusting it, and improving production efficiency.

[0011] The present invention is further configured as follows: a first load-bearing column is provided at the bottom of the waste material elevator, a second load-bearing column is provided on the rear side of the second waste material conveyor belt, a staircase is provided on the rear side of the second load-bearing column, floor 1, floor 2 and floor 3 are respectively provided between the first load-bearing column and the second load-bearing column, the floor 2 is located at the bottom of the third waste material conveyor belt, the floor 3 is located at the bottom of the second waste material conveyor belt, and a controller is provided at the bottom of the front side of the second load-bearing column.

[0012] By adopting the above technical solution, the first load-bearing column and the second load-bearing column are set to provide auxiliary support for the second waste material conveyor belt and the stairs, and then the first load-bearing column and the second load-bearing column are used to support the floor slab one, floor slab two and floor slab three, and then the controller set on the front side of the second load-bearing column is used to control the use of other structures.

[0013] The present invention is further configured as follows: a third load-bearing column is provided on the rear side of the stairs and the third waste material conveyor belt, a fourth load-bearing column is provided on the rear side of the mixture mixing pot, and floor slabs four and five are provided on the bottom and top between the third load-bearing column and the fourth load-bearing column respectively, and the floor slab four is located on the outside of the mixture mixing pot.

[0014] By adopting the above technical solution, by setting the third load-bearing column and the fourth load-bearing column, the mixture mixing pot can be supported and used, and then the fourth and fifth floor plates can be auxiliary supported, thereby facilitating the use of the mixture mixing pot by the user.

[0015] The present invention is further configured as follows: a hot material storage bin is provided at the top between the third load-bearing column and the fourth load-bearing column, a vibrating screen is provided at the top of the hot material storage bin, a hot material metering bin is provided at the bottom of the hot material storage bin, the hot material metering bin is located at the top of the mixture stirring pot, an asphalt melting tank is provided on the front side of the top of the mixture stirring pot, and the asphalt melting tank is located on the rear side of the hot material metering bin.

[0016] By adopting the above technical solution, the hot material storage bin is set between the third load-bearing column and the fourth load-bearing column, so that the heated new material can be stored and used, and then the heated new material can be measured through the hot material metering bin. In this way, when transporting the asphalt melting tank to the mixture stirring pot, the controlled use can be ensured.

[0017] The present invention is further configured as follows: a new aggregate supply bin is provided on the rear side of the fourth load-bearing column, a second material break detection device is provided at the bottom of the new aggregate supply bin, and a new aggregate conveyor belt is provided at the bottom of the second material break detection device.

[0018] By adopting the above technical solution, new materials can be collected and stored by setting up a new aggregate supply bin, and then the second material break detection device can detect whether there is still material inside the new aggregate supply bin, and then the new material can be transported and used through the new aggregate conveyor belt.

[0019] The present invention is further configured as follows: a new aggregate heating roller is provided on the front side of the new aggregate conveyor belt, a new material heating cylinder feed port is provided on the rear side of the top of the new aggregate heating roller, the new material heating cylinder feed port is located at the bottom of the front side of the new aggregate conveyor belt, a combustion chamber is provided on the front side of the new aggregate heating roller, and a burner is provided on the left side of the combustion chamber.

[0020] The above technical solution is adopted, by setting a new aggregate heating roller and cooperating with the new material heating cylinder feed port on its top to receive the new material conveyed by the new aggregate conveyor belt, and then the burner set on the front side of the new aggregate heating roller cooperates with the combustion chamber to generate heat, and then the heat is transported to the inside of the new aggregate heating roller to heat the new material for use.

[0021] The present invention is further configured as follows: a new aggregate elevator is provided on the rear side of the fourth load-bearing column, the new aggregate elevator is located on the front side of the new aggregate heating roller, a new aggregate elevator feed port is provided at the bottom of the new aggregate elevator, a new aggregate elevator discharge port is provided at the top of the new aggregate elevator, and the new aggregate elevator discharge port is located on the top of the vibrating screen.

[0022] By adopting the above technical solution, a new aggregate elevator is set up to use the new aggregate elevator feed port of the new aggregate elevator to receive the new material heated by the new aggregate heating roller, and then transport it upward through the new aggregate elevator, and then transport it to the inside of the vibrating screen through the new aggregate elevator discharge port at the top, and then vibrate the new material through the vibrating screen to disperse it, thereby realizing the transportation of the new material to the inside of the hot material storage bin, so as to facilitate the subsequent use of ingredients.

[0023] The present invention is further configured as follows: a first material break detection device is provided at the bottom of the old material cold material bin, a first temperature sensor is provided on the right side of the combustion chamber, a second temperature sensor is provided on the top of the new aggregate heating roller, a second material level sensor and a third temperature sensor are provided on the rear side of the hot material storage bin, respectively, a fourth temperature sensor and a third metering scale are provided on the rear side of the mixed material stirring pot, a first metering scale and a first material level detection sensor are provided at the bottom and rear side of the old material metering bin, respectively, a third material level sensor is provided on the front side of the mixed material stirring pot, and the first temperature sensor, the second temperature sensor, the second material level sensor, the third temperature sensor, the fourth temperature sensor, the third metering scale, the first metering scale, the first material level detection sensor and the third material level sensor are all electrically connected to the controller.

[0024] By adopting the above technical solution, by setting up a first material break detection device, the material inside the old material cold material bin can be detected and used, and then the temperature inside the new aggregate heating drum can be detected through a second temperature sensor set on the top of the new aggregate heating drum. By setting up a second material level sensor and a third temperature sensor, the liquid level and temperature inside the hot material storage bin can be detected. By setting up a fourth temperature sensor and a third metering scale, the temperature and weight inside the mixed material stirring pot can be detected. By setting up a third material level sensor, the material level inside the mixed material stirring pot can be detected. The above-mentioned first temperature sensor, second temperature sensor, second material level sensor, third temperature sensor, fourth temperature sensor, third metering scale, first metering scale, first material level detection sensor and third material level sensor are all controlled and used by the controller.

[0025] The present invention is further configured as follows: the controller controls the speed of the old material feeding belt according to the old material grading, the feeding is fully detected by the first material break detection device, the first old material conveyor belt passes through the old material elevator, and is transported to the old material metering bin through the old material chute. After metering, the third old material conveyor belt is transported to the mixed material stirring pot.

[0026] By adopting the above technical solution, the controller can control the speed of the old material feeding belt according to the old material grading. The feeding is detected throughout the process by the first material break detection device. The old material feeding belt is transported through the old material elevator, and then transported to the old material metering bin through the old material chute. After metering, it is transported to the mixture stirring pot by the old material conveyor belt for subsequent mixing.

[0027] A low-dosage factory-mixed hot regeneration mixing plant comprises the following steps:

[0028] [1] The controller systematically controls the entire production process and starts the first temperature detection. When the temperature difference between the second temperature sensor in the drum and the first temperature sensor in the combustion chamber is less than five degrees, and the mixing pot reaches the set mixing temperature, the old material device starts feeding;

[0029] [2] When the temperature of the second temperature monitoring sensor is equal to that of the first temperature monitoring sensor, new material begins to be fed. The second material break detection device will conduct full detection during feeding. The second material level sensor and the third temperature sensor in the hot material storage bin will conduct full detection. When the second material level sensor detects that the minimum proportion of aggregate meets the set grading requirements, the new material storage bin will begin to discharge according to the set new material grading. If the material temperature fed back by the third temperature sensor in the new material storage bin is within the set hot material temperature ±5°C, the operation will continue. If it is lower than the set material temperature, the burner will be adjusted.

[0030] [3] When the second material level sensor detects that the material level of the aggregate with the minimum proportion meets the set aggregate proportion requirement, the old material metering bin starts to discharge the material, and the third material level sensor in the mixing station starts to detect the material level. When there is no change, the hot material metering bin discharges the material, and the third metering scale starts to measure. After the dosage is correct with the set dosage, stirring begins. After stirring stops, the asphalt melting tank starts to transport asphalt to the mixture mixing pot for continued stirring. After stirring is completed, the fourth temperature sensor feeds back the temperature. If the discharge temperature does not meet the design discharge temperature requirement, the above steps [1], [2], and [3] are repeated.

[0031] In summary, the present invention has the following beneficial effects:

[0032] By setting up and renovating an ordinary mixing plant, with structures such as a used material cold material bin, a used material feeding belt, a first used material conveyor belt, a used material elevator, a second used material conveyor belt, a used material metering bin, a third used material conveyor belt and a mixed material mixing pot, a loading method for transporting unheated used materials to the mixed material mixing pot is realized, so as to achieve the utilization of used materials with lower admixture content (less than 10%), reduce the purchase cost of recycling equipment, reduce the use of new materials, save production costs, and assist in improving the temperature control of the low-admixture plant-mixed mixed material system, thereby facilitating better control of the subsequent loading, mixing and discharging of new and old materials, and performing real-time monitoring and automatic adjustment of temperature, thereby improving production efficiency;

[0033] By setting up the above-mentioned old material cold material bin, old material feeding belt, first old material conveyor belt, old material elevator, second old material conveyor belt, old material metering bin, third old material conveyor belt and mixture stirring pot and other structures, it is possible to save production costs while assisting in improving the temperature control of the low-dosage factory-mixed mixture system, thereby facilitating better control of the subsequent loading, mixing and discharging of new and old materials, monitoring and automatically adjusting the temperature in real time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the new transformation system of the present invention;

[0036] Figure 3 The present invention Figure 1 Schematic diagram of the recycled material conveyor belt;

[0037] Figure 4 The present invention Figure 1 Schematic diagram of the waste material supply device;

[0038] Figure 5 The present invention Figure 1 Schematic diagram of the Zhongxin aggregate conveyor belt.

[0039] 1. Old material supply device; 2. Old material cold material bin; 3. First material break detection device; 4. Old material feeding belt; 5. First old material conveyor belt; 6. Old material elevator feed port; 7. Old material elevator; 8. Old material chute; 9. Second old material conveyor belt; 10. Old material metering bin; 11. Third old material conveyor belt; 12. New aggregate elevator discharge port; 13. Vibrating screen; 14. Hot material storage bin; 15. Hot material metering bin; 16. Asphalt melting tank; 17. Mixture stirring pot; 18. Discharge port; 19. New aggregate supply bin; 20. Second material break detection device; 21. New aggregate conveyor belt; 22. New material heating cylinder feed port; 23. New aggregate heating Drum; 24. Burner; 25. Combustion chamber; 26. Feed port of new aggregate elevator; 27. New aggregate elevator; 28. First load-bearing column; 29. ​​Second load-bearing column; 30. Stairs; 31. Third load-bearing column; 32. Fourth load-bearing column; 33. Floor 1; 34. Floor 2; 35. Floor 3; 36. Floor 4; 37. Floor 5; 38. Controller; 251. First temperature sensor; 231. Second temperature sensor; 141. Second material level sensor; 142. Third temperature sensor; 171. Fourth temperature sensor; 172. Third weighing scale; 101. First weighing scale; 102. First material level detection sensor; 173. Third material level sensor. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] Example 1, reference Figure 1-5 A low-mix hot regeneration mixing plant includes a waste material supply device 1, which includes a waste material cold material bin 2. A waste material feeding belt 4 is provided at the bottom of the waste material cold material bin 2. A first waste material conveying belt 5 is provided at the bottom of the waste material feeding belt 4. A waste material elevator 7 is provided at the rear side of the first waste material conveying belt 5. A waste material elevator feed port 6 is provided at the front side of the waste material elevator 7. The waste material elevator feed port 6 is located at the rear side of the first waste material conveying belt 5. A waste material chute 8 is provided inside the waste material elevator 7. A second waste material conveyor belt 9 is provided at the top of the rear side of the machine 7, and a waste material metering bin 10 is provided at the bottom of the second waste material conveyor belt 9. After the ordinary mixing plant is modified, the waste material cold bin 2, the waste material feeding belt 4, the first waste material conveyor belt 5, the waste material elevator 7 and the second waste material conveyor belt 9 are used to realize the feeding method of transporting the unheated waste material to the mixed material stirring pot 17, so as to achieve the utilization of low-content waste material (less than 10%), which can reduce the purchase cost of recycling equipment, reduce the use of new materials, and save production costs.

[0042] like Figure 1As shown, a first load-bearing column 28 is provided at the bottom of the waste material elevator 7, a second load-bearing column 29 is provided on the rear side of the second waste material conveyor belt 9, and a staircase 30 is provided on the rear side of the second load-bearing column 29. Floor 1 33, floor 2 34 and floor 35 are provided between the first load-bearing column 28 and the second load-bearing column 29 respectively. Floor 2 34 is located at the bottom of the third waste material conveyor belt 11, and floor 35 is located at the bottom of the second waste material conveyor belt 9. A controller 38 is provided at the bottom of the front side of the second load-bearing column 29. By setting the first load-bearing column 28 and the second load-bearing column 29, auxiliary support is provided for the second waste material conveyor belt 9 and the staircase 30, and then the first load-bearing column 28 and the second load-bearing column 29 support the floor 1 33, floor 2 34 and floor 35, and then the controller 38 set on the front side of the second load-bearing column 29 is used to control the use of other structures.

[0043] like Figure 1 As shown, a third load-bearing column 31 is provided on the rear side of the stairs 30 and the third waste material conveyor belt 11, and a fourth load-bearing column 32 is provided on the rear side of the mixing pot 17. Floor slab four 36 and floor slab five 37 are provided at the bottom and top between the third load-bearing column 31 and the fourth load-bearing column 32 respectively. Floor slab four 36 is located on the outside of the mixing pot 17. By arranging the third load-bearing column 31 and the fourth load-bearing column 32, the mixing pot 17 can be supported and used, and then the floor slab four 36 and the floor slab five 37 can be used for auxiliary support, so as to facilitate the use of the mixing pot 17 by the user.

[0044] like Figure 1 As shown, a hot material storage bin 14 is provided on the top between the third load-bearing column 31 and the fourth load-bearing column 32, a vibrating screen 13 is provided on the top of the hot material storage bin 14, a hot material metering bin 15 is provided on the bottom of the hot material storage bin 14, and the hot material metering bin 15 is located on the top of the mixture stirring pot 17. An asphalt melting tank 16 is provided on the front side of the top of the mixture stirring pot 17, and the asphalt melting tank 16 is located on the rear side of the hot material metering bin 15. The hot material storage bin 14 provided between the third load-bearing column 31 and the fourth load-bearing column 32 can be used to store and use the heated new material, and then the heated new material can be measured through the hot material metering bin 15, so that when the asphalt melting tank 16 is used to transport the material to the inside of the mixture stirring pot 17, the amount of use can be controlled.

[0045] like Figure 1As shown, a new aggregate supply bin 19 is provided on the rear side of the fourth load-bearing column 32, a second material breakage detection device 20 is provided at the bottom of the new aggregate supply bin 19, and a new aggregate conveyor belt 21 is provided at the bottom of the second material breakage detection device 20. The new aggregate supply bin 19 can be used to collect and store new materials, and then the second material breakage detection device 20 can be used to detect whether there is still material inside the new aggregate supply bin 19, and then the new aggregate conveyor belt 21 can be used to transport the new materials.

[0046] like Figure 1 As shown, a new aggregate heating roller 23 is provided on the front side of the new aggregate conveyor belt 21, and a new material heating cylinder feed port 22 is provided on the rear side of the top of the new aggregate heating roller 23. The new material heating cylinder feed port 22 is located at the bottom of the front side of the new aggregate conveyor belt 21. A combustion chamber 25 is provided on the front side of the new aggregate heating roller 23, and a burner 24 is provided on the left side of the combustion chamber 25. The new aggregate heating roller 23 is provided in conjunction with the new material heating cylinder feed port 22 on its top to receive the new material conveyed by the new aggregate conveyor belt 21, and then the burner 24 provided on the front side of the new aggregate heating roller 23 cooperates with the combustion chamber 25 to generate heat, and then the heat is transported to the inside of the new aggregate heating roller 23 to heat the new material.

[0047] Brief description of the use process: First, after transforming the ordinary mixing plant, the structure of the waste material cold material bin 2, the waste material feeding belt 4, the first waste material conveyor belt 5, the waste material elevator 7, the second waste material conveyor belt 9, the waste material metering bin 10, the third waste material conveyor belt 11 and the mixed material mixing pot 17 is used to realize the loading method of transporting the unheated waste material to the mixed material mixing pot 17, and then the first bearing column 28 and the second bearing column 29 are used to realize the auxiliary support of the second waste material conveyor belt 9 and the stairs 30, and then the first bearing column 28 and the second bearing column 29 support the floor 1 33, the floor 2 34 and the floor 3 35, and then the controller set in front of the second bearing column 29 is used. 38 controls the use of other structures, and then passes through the hot material storage bin 14 set between the third load-bearing column 31 and the fourth load-bearing column 32 to store and use the heated new material, and then passes through the hot material metering bin 15 to meter the heated new material, so as to ensure the use of controlled quantity when transporting it to the inside of the mixture stirring pot 17 in conjunction with the asphalt melting tank 16, and then passes through the new aggregate supply bin 19 to collect and store the new material, and then passes through the first material breaking detection device 3 to detect whether there is still material in the new aggregate supply bin 19, and then passes through the new aggregate conveyor belt 21 to transport the new material to the inside of the mixture stirring pot 17.

[0048] Example 2, reference Figure 1-5A low-content plant-mixed hot recycling mixing building includes a waste material metering bin 10, a third waste material conveyor belt 11 is provided at the bottom of the waste material metering bin 10, a mixture stirring pot 17 is provided on the rear side of the third waste material conveyor belt 11, and a discharge port 18 is provided at the bottom of the mixture stirring pot 17. The waste material is conveyed to the surface of the third waste material conveyor belt 11 according to the waste material metering bin 10, and then transported to the inside of the mixture stirring pot 17 through the third waste material conveyor belt 11 to cooperate with the subsequent structure to mix with the new material, thereby assisting in improving the temperature control of the low-content plant-mixed mixture system as a whole, thereby facilitating better control of the subsequent loading, mixing and discharging of new and old materials, monitoring the temperature in real time and automatically adjusting it, and improving production efficiency.

[0049] like Figure 1 As shown, a new aggregate elevator 27 is provided on the rear side of the fourth load-bearing column 32, and the new aggregate elevator 27 is located on the front side of the new aggregate heating drum 23. A new aggregate elevator feed port 26 is provided at the bottom of the new aggregate elevator 27, and a new aggregate elevator discharge port 12 is provided on the top of the new aggregate elevator 27. The new aggregate elevator discharge port 12 is located on the top of the vibrating screen 13. By setting up the new aggregate elevator 27, the new aggregate elevator feed port 26 of the new aggregate elevator 27 can be used to receive the new material heated by the new aggregate heating drum 23, and then transported upward through the new aggregate elevator 27, and then transported to the inside of the vibrating screen 13 through the new aggregate elevator discharge port 12 on its top, and then the new material is vibrated through the vibrating screen 13, so as to realize the transportation of the new material to the inside of the hot material storage bin 14, so as to facilitate the subsequent batching use.

[0050] like Figure 1As shown, a first material break detection device 3 is provided at the bottom of the old material cold material bin 2, a first temperature sensor 251 is provided on the right side of the combustion chamber 25, a second temperature sensor 231 is provided on the top of the new aggregate heating drum 23, a second material level sensor 141 and a third temperature sensor 142 are provided on the rear side of the hot material storage bin 14, a fourth temperature sensor 171 and a third metering scale 172 are provided on the rear side of the mixing material stirring pot 17, a first metering scale 101 and a first material level detection sensor 102 are provided on the bottom and rear side of the old material metering bin 10, and a third material level sensor 173 is provided on the front side of the mixing material stirring pot 17. The first temperature sensor 251, the second temperature sensor 231, the second material level sensor 141, the third temperature sensor 142, the fourth temperature sensor 171, the third metering scale 172, the first metering scale 101, the first material level detection sensor 102 and the third material level sensor 173 are all electrically connected to the controller 38. By setting the first material break detection device 3, It can be used to detect the material inside the old material cold material bin 2, and then the second temperature sensor 231 set on the top of the new aggregate heating drum 23 can be used to detect the temperature inside the new aggregate heating drum 23. By setting the second material level sensor 141 and the third temperature sensor 142, the liquid level and temperature inside the hot material storage bin 14 can be detected. By setting the fourth temperature sensor 171 and the third metering scale 172, the temperature and weight inside the mixed material stirring pot 17 can be detected. By setting the third material level sensor 173, the material level inside the mixed material stirring pot 17 can be detected. The above-mentioned first temperature sensor 251, second temperature sensor 231, second material level sensor 141, third temperature sensor 142, fourth temperature sensor 171, third metering scale 172, first metering scale 101, first material level detection sensor 102 and third material level sensor 173 are all controlled and used by the controller 38.

[0051] like Figure 1 As shown, the controller 38 controls the speed of the old material feeding belt 4 according to the old material grading, and the feeding is fully detected by the first material break detection device 3, and the old material feeding belt 4 passes through the old material elevator 7 and is transported to the old material metering bin 10 through the old material chute 8. After metering, it is transported to the mixing pot 17 by the old material conveyor belt. The controller 38 can control the speed of the old material feeding belt 4 according to the old material grading, and the feeding is fully detected by the first material break detection device 3, and the old material feeding belt 4 passes through the old material elevator 7 and is then transported to the old material metering bin 10 through the old material chute 8. After metering, it is transported to the mixing pot 17 by the third old material conveyor belt 11 for subsequent mixing.

[0052] Brief description of the usage process: First, the new aggregate elevator feed port 26 of the new aggregate elevator 27 is used to receive the new material heated by the new aggregate heating drum 23, and then it is transported upward through the new aggregate elevator 27, and then it is transported to the inside of the vibrating screen 13 through the new aggregate elevator discharge port 12 at its top, and then the new material is vibrated and dispersed through the vibrating screen 13, so as to realize the transportation of the new material to the inside of the hot material storage bin 14, and then in this process, it passes through the first material breaking detection device 3, which can realize the detection and use of the material inside the old material cold material bin 2, and then passes through the second temperature sensor 231 set on the top of the new aggregate heating drum 23, which can realize the detection of the temperature inside the new aggregate heating drum 23, and by setting the second material level sensor 141 and the third temperature sensor 142, it can realize the detection of the hot material. The liquid level and temperature inside the storage bin 14 are detected. By setting the fourth temperature sensor 171 and the third metering scale 172, the temperature and weight inside the mixing stirring pot 17 can be detected and used. By setting the third material level sensor 173, the material level inside the mixing stirring pot 17 can be detected and used. The above-mentioned first temperature sensor 251, second temperature sensor 231, second material level sensor 141, third temperature sensor 142, fourth temperature sensor 171, third metering scale 172, first metering scale 101, first material level detection sensor 102 and third material level sensor 173 are all controlled and used by the controller 38, so as to better control the connection between the loading, mixing and discharging of new and old materials, monitor the temperature in real time and automatically adjust it, and improve production efficiency.

[0053] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A low-mix hot regeneration mixing plant, comprising a waste material supply device (1), characterized in that: The scrap material supply device (1) comprises a scrap material cold material bin (2), a scrap material feeding belt (4) is provided at the bottom of the scrap material cold material bin (2), a first scrap material conveying belt (5) is provided at the bottom of the scrap material feeding belt (4), a scrap material elevator (7) is provided at the rear side of the first scrap material conveying belt (5), a scrap material elevator feed port (6) is provided at the front side of the scrap material elevator (7), and the scrap material elevator feed port (6) is located at the rear side of the first scrap material conveying belt (5). A waste material chute (8) is provided inside the material elevator (7), a second waste material conveying belt (9) is provided at the top of the rear side of the waste material elevator (7), a waste material metering bin (10) is provided at the bottom of the second waste material conveying belt (9), a third waste material conveying belt (11) is provided at the bottom of the waste material metering bin (10), a mixed material stirring pot (17) is provided at the rear side of the third waste material conveying belt (11), and a discharge port (18) is provided at the bottom of the mixed material stirring pot (17); A first load-bearing column (28) is provided at the bottom of the waste material elevator (7), a second load-bearing column (29) is provided at the rear side of the second waste material conveyor belt (9), a staircase (30) is provided at the rear side of the second load-bearing column (29), floor slab 1 (33), floor slab 2 (34) and floor slab 3 (35) are provided between the first load-bearing column (28) and the second load-bearing column (29), respectively, the floor slab 2 (34) is located at the bottom of the third waste material conveyor belt (11), the floor slab 3 (35) is located at the bottom of the second waste material conveyor belt (9), and a controller (38) is provided at the bottom of the front side of the second load-bearing column (29); A third load-bearing column (31) is provided on the rear side of the staircase (30) and the third scrap material conveyor belt (11), a fourth load-bearing column (32) is provided on the rear side of the mixing material stirring pot (17), and floor slab four (36) and floor slab five (37) are provided at the bottom and top between the third load-bearing column (31) and the fourth load-bearing column (32), respectively, and the floor slab four (36) is located outside the mixing material stirring pot (17); A hot material storage bin (14) is provided at the top between the third load-bearing column (31) and the fourth load-bearing column (32), a vibrating screen (13) is provided at the top of the hot material storage bin (14), a hot material metering bin (15) is provided at the bottom of the hot material storage bin (14), the hot material metering bin (15) is located at the top of a mixture stirring pot (17), an asphalt melting tank (16) is provided at the front side of the top of the mixture stirring pot (17), and the asphalt melting tank (16) is located at the rear side of the hot material metering bin (15); A new aggregate supply bin (19) is provided at the rear side of the fourth load-bearing column (32), a second material breakage detection device (20) is provided at the bottom of the new aggregate supply bin (19), and a new aggregate conveyor belt (21) is provided at the bottom of the second material breakage detection device (20); A new aggregate heating roller (23) is provided on the front side of the new aggregate conveyor belt (21), a new material heating drum feed port (22) is provided on the rear side of the top of the new aggregate heating drum (23), the new material heating drum feed port (22) is located at the bottom of the front side of the new aggregate conveyor belt (21), a combustion chamber (25) is provided on the front side of the new aggregate heating drum (23), and a burner (24) is provided on the left side of the combustion chamber (25); A new aggregate elevator (27) is provided on the rear side of the fourth load-bearing column (32), and the new aggregate elevator (27) is located on the front side of the new aggregate heating drum (23). A new aggregate elevator feed port (26) is provided at the bottom of the new aggregate elevator (27), and a new aggregate elevator discharge port (12) is provided at the top of the new aggregate elevator (27), and the new aggregate elevator discharge port (12) is located on the top of the vibrating screen (13); The bottom of the old material cold material bin (2) is provided with a first material break detection device (3), the right side of the combustion chamber (25) is provided with a first temperature sensor (251), the top of the new aggregate heating roller (23) is provided with a second temperature sensor (231), the rear side of the hot material storage bin (14) is provided with a second material level sensor (141) and a third temperature sensor (142), the rear side of the mixed material stirring pot (17) is provided with a fourth temperature sensor (171) and a third metering scale (172), the bottom of the old material metering bin (10) is provided with a first temperature sensor (251), the right side of the combustion chamber (25) is provided with a first temperature sensor (251), the top of the new aggregate heating roller (23) is provided with a second temperature sensor (231), the rear side of the hot material storage bin (14) is provided with a second material level sensor (141) and a third temperature sensor (142), the rear side of the mixed material stirring pot (17) is provided with a fourth temperature sensor (171) and a third metering scale (172), A first measuring scale (101) and a first material level sensor (102) are respectively provided on the front and rear sides of the mixing material stirring pot (17); a third material level sensor (173) is provided on the front side of the mixing material stirring pot (17); the first temperature sensor (251), the second temperature sensor (231), the second material level sensor (141), the third temperature sensor (142), the fourth temperature sensor (171), the third measuring scale (172), the first measuring scale (101), the first material level sensor (102) and the third material level sensor (173) are all electrically connected to the controller (38); The controller (38) controls the speed of the old material feeding belt (4) according to the old material grading. The feeding is detected by the first material break detection device (3) throughout the process. The old material is transported by the first old material conveyor belt (5) through the old material elevator (7) and the old material chute (8) to the old material metering bin (10). After metering, the old material is transported by the third old material conveyor belt (11) to the mixed material stirring pot (17).

2. According to the low-dosage factory-mixed hot regeneration mixing plant described in claim 1, in order to ensure the regeneration effect and quality of the mixture after direct mixing of unheated low-dosage old materials with new materials, it is necessary to strictly control the temperature at each stage in the new material feeding system, and to increase the feeding connection efficiency of new and old materials as much as possible. The existing feeding, temperature measurement, material level measurement and metering systems are modified, which includes the following steps: [1] The controller (38) systematically controls the entire production process and starts the first temperature detection. When the temperature difference between the second temperature sensor (231) in the drum (23) and the first temperature sensor (251) in the combustion chamber (25) is less than five degrees, and the mixing pot (17) reaches the set mixing temperature, the old material supply device (1) starts feeding; [2] When the temperature of the second temperature sensor (231) is equal to that of the first temperature sensor (251), new material starts to be fed. During feeding, the second material break detection device (20) performs full detection. The second material level sensor (141) and the third temperature sensor (142) in the hot material storage bin (14) perform full detection. When the second material level sensor (141) detects that the minimum proportion of aggregate meets the set gradation proportion requirement, the material starts to be discharged according to the set new material gradation. When the material temperature fed back by the third temperature sensor (142) in the hot material storage bin (14) is within the set hot material temperature ±5°C, the operation continues. If it is lower than the set material temperature, the burner (24) is adjusted. [3] When the second material level sensor (141) detects that the material level of the aggregate with the least proportion meets the set grading proportion requirement, the old material metering bin (10) starts to discharge the material, and the third material level sensor (173) starts to detect the material level. When there is no change, the hot material metering bin (15) discharges the material, and the third metering scale (172) starts metering. After the dosage is correct with the set dosage, stirring is started. After stirring stops, the asphalt melting tank (16) starts to transport asphalt to the mixture stirring pot (17) to continue stirring. After stirring is completed, the fourth temperature sensor (171) feeds back the temperature. If the discharge temperature does not meet the design discharge temperature requirement, the above steps [1], [2], and [3] are repeated.

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