A pouring asphalt concrete intelligent mixing temperature control device and method

Abstract

The present invention relates to the field of intelligent mixing temperature control of asphalt concrete, specifically a device and method for intelligent mixing temperature control of poured asphalt concrete. The device comprises a main mixing barrel, a driving main shaft, a stirring drum, and a cleaning unit. The stirring drum provided by the present invention can realize internal and external convection of the asphalt on the inner and outer sides of the main mixing barrel through the self-rotation of the convection element, so as to ensure that the asphalt temperature on both the inner and outer sides is within the required range during mixing. The stirring drum can also drive the convection element to revolve around the driving main shaft through the barrel body to make the internal and external convection of the asphalt uniform. The convection element on the stirring barrel provided by the present invention can cooperate with the annular guide groove on the driving main shaft so that the convection element can move up and down while revolving around the driving main shaft. Moreover, due to the staggered arrangement of the toggle rack, each time the convection element moves up and down, the adjacent convection fans on the same convection element rotate in opposite directions, making the convection in the barrel more complex and the temperature of the asphalt inside and outside more uniform.

Description

Technical Field

[0001] The present invention relates to the field of intelligent mixing temperature control of asphalt concrete, and specifically to a pouring type intelligent mixing temperature control device and method for asphalt concrete. Background Art

[0002] Pouring asphalt concrete refers to an asphalt mixture with high asphalt content and high mineral powder content, which is mixed at 220℃-260℃ and spread and formed by relying on the mixture's own fluidity without the need for rolling.

[0003] Asphalt concrete is an indispensable raw material for basic road construction and needs to be heated during paving. However, existing asphalt concrete heating equipment has problems such as uneven heating effect, which can easily cause the asphalt concrete to solidify at the outlet and cause blockage, reducing the effectiveness of the heating equipment. Therefore, a new structure needs to be designed to solve the above problems.

[0004] To solve the above problems, the utility model patent with publication number CN215104416U increases the discharge speed of asphalt concrete by setting a discharge scraper, avoids blockage, and reduces the solidification inside the equipment. By installing a discharge pipe, a support platform and a discharge device on the heating shell, it is convenient to use the discharge pipe to discharge the asphalt concrete smoothly. By setting a stirring blade, the asphalt concrete is turned over to ensure uniform heating, thereby increasing the heating speed and shortening the heating time.

[0005] However, the above scheme still has several problems that cannot be solved: 1. Since poured asphalt concrete needs to be mixed at 220℃-260℃, where the temperature difference between the upper and lower temperatures is small, the temperature needs to be precisely controlled during mixing. Otherwise, excessively high or low temperatures during mixing may affect the various mechanical properties of the finished product after mixing. The auger-shaped stirring blades set in the above scheme make it difficult for the asphalt inside and outside to form convection, and the thermal conductivity of asphalt is extremely poor. The asphalt on the inside is difficult to heat and it is difficult to reach the specified temperature, thus affecting the product quality; 2. The temperature detector set in the above scheme is fixed and can only detect the temperature of asphalt at a fixed position. The detected value is not comprehensive and accurate enough, which may cause the operator to misjudge the temperature of the asphalt heating, which may cause the quality of the asphalt concrete to be unqualified after mixing. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a cast asphalt concrete intelligent mixing temperature control device, including a main mixing barrel, a heating device is provided on the side wall of the main mixing barrel, a motor mounting bracket is fixedly connected to the bottom of the main mixing barrel, a drive motor is fixedly installed on the motor mounting bracket, a feed port is fixedly connected to the outside of the main mixing barrel, a discharge port is fixedly connected to the bottom of the side wall of the main mixing barrel, the output shaft of the drive motor passes through the bottom of the main mixing barrel, the part of the output shaft of the drive motor passing through the bottom of the main mixing barrel is fixedly connected to the drive main shaft, a stirring cylinder is sleeved on the outside of the drive main shaft, and a cleaning unit is provided above the main mixing barrel.

[0007] The driving main shaft is a stepped shaft, and driving gear discs are fixedly connected to the shoulders on both sides of the driving main shaft. A plurality of annular guide grooves are provided on the circumferential surface of the driving main shaft and in the middle part of the driving gear discs on both sides. The lower end of the driving gear disc on the lower side of the driving main shaft is fixedly connected to a driving gear.

[0008] The stirring cylinder includes a cylinder body sleeved on the outside of the driving main shaft, and the upper and lower ends of the cylinder body are respectively rotatably connected to the upper and lower ends of the inner side of the main stirring barrel. The upper and lower ends of the circumferential surface of the cylinder body are rotatably connected to multiple stirring paddles. There are multiple sliding grooves on the circumferential surface of the cylinder body and between the stirring paddles located at the upper and lower ends. Convection parts are slidably connected in the sliding grooves. The lower end of the stirring paddle on the lower side of the cylinder body is fixedly connected to a driving gear ring.

[0009] A transmission gear is rotatably connected on the inner bottom of the main mixing barrel and located between the driving main shaft and the stirring drum. The transmission gear is respectively engaged with the driving gear and the driving ring gear, so that the power of the driving main shaft is transmitted to the stirring drum through the transmission gear. However, due to the different radii of the driving gear and the driving ring gear, there is a difference in angular velocity between the driving main shaft and the stirring drum during rotation.

[0010] As a preferred technical solution of the present invention, the stirring paddle includes a stirring shaft rotatably connected to the cylinder body, the stirring shaft passes through the cylinder body, and one end of the stirring shaft located on the inner side of the cylinder body is fixedly connected to a bevel gear. The bevel gears of the stirring paddles on the upper and lower sides are respectively engaged with the driving gear discs at their corresponding positions. Since there is a difference in angular velocity between the driving main shaft and the stirring cylinder during rotation, the stirring paddle is driven to rotate through the bevel gear when the driving main shaft rotates.

[0011] As a preferred technical solution of the present invention, the sliding groove includes multiple through grooves arranged side by side in the vertical direction, the through grooves penetrate the barrel, and the multiple through grooves arranged side by side in the vertical direction are interconnected by connecting grooves, and the connecting grooves are slightly wider than the through grooves.

[0012] As a preferred technical solution of the present invention, the convection element includes a baffle plate slidably connected to the connecting groove, and a guide end head is slidably connected to the side of the baffle plate close to the driving main shaft, and a rotating rod is slidably passed through the other side of the baffle plate at a corresponding position of the guide end head. The number of rotating rods is the same as the through groove, and the rotating rod passes through the through groove outward, and the guide end head passes through the through groove inward and is inserted into the annular guide groove. When the driving main shaft drives the stirring cylinder to rotate, the annular guide groove drives the convection element to move up and down, and a toggle gear is fixedly connected to the rotating rod, and a convection fan is fixedly connected to the end of the rotating rod away from the baffle plate. A wireless temperature detector is fixedly connected in the middle of the convection fan, and the lengths of two adjacent rotating rods on the same convection element are different.

[0013] As a preferred technical solution of the present invention, a toggle rack is fixedly connected to the cylinder body and located on one side of the through groove, and two adjacent toggle racks are staggered with each other. The two are respectively located on both sides of the through groove, and the toggle rack is engaged with the toggle gear. When the annular guide groove drives the convection piece to move up and down, the two adjacent convection fans on the same convection piece rotate in opposite directions due to the mutual staggering of the two adjacent toggle racks.

[0014] As a preferred technical solution of the present invention, a sealing strip is provided at the connection between the portion of the blocking plate slidingly connected to the connecting groove and the cylinder body to prevent asphalt from entering the cylinder body, affecting transmission and making cleaning difficult.

[0015] As a preferred technical solution of the present invention, the cleaning unit includes a cleaning liquid inlet fixedly connected to the cover plate on the top of the main stirring barrel, a plurality of cleaning liquid nozzles evenly fixedly installed on the inner side of the cover plate on the top of the main stirring barrel, and a hollow structure is provided on the top cover of the main stirring barrel. The cleaning liquid nozzle and the cleaning liquid inlet are connected to each other through the hollow structure of the top cover plate of the main stirring barrel.

[0016] As a preferred technical solution of the present invention, a plurality of protrusions are evenly and fixedly connected in the annular guide groove. When the convection element slides in the annular guide groove, the protrusions push the rotating rod outward through the guide end to increase the stirring effect.

[0017] As a preferred technical solution of the present invention, a method for intelligent temperature control of pouring asphalt concrete mixing is provided, and the specific steps are as follows: S1. Preparation: the asphalt to be mixed and the ore powder are added from the feed port, and then the drive motor is turned on.

[0018] S2. Longitudinal stirring: The driving motor drives the driving main shaft to rotate, and the driving main shaft drives the stirring drum to rotate. However, due to the difference in angular velocity between the driving main shaft and the stirring drum during rotation, the angular velocity of the driving main shaft is slightly greater than the angular velocity of the stirring drum. At the same time, the driving main shaft drives the stirring paddle to rotate on itself, and the stirring drum drives the stirring paddle to rotate around the driving main shaft. The stirring paddle evenly mixes the asphalt on the upper and lower sides with the asphalt in the center.

[0019] S3. Convection stirring: When the driving motor drives the driving main shaft and the stirring drum to rotate, due to the speed difference between the driving main shaft and the stirring drum, the convection piece will move relative to the driving main shaft when rotating with the drum body. Under the action of the annular guide groove, the convection piece slides up and down. At the same time, the convection piece rotates on itself, which can form inward and outward convection for the asphalt in its own area, so that the temperature of the asphalt on both sides tends to be consistent. It can also revolve around the driving main shaft with the drum body, thereby making the temperature of the asphalt in the barrel more uniform. The convection piece can also detect the temperature of multiple points in the barrel, so that the staff can more clearly understand the temperature of the asphalt in each part of the barrel, so as to facilitate the adjustment of the power of the heating device.

[0020] S4. Subsequent cleaning: After the mixing is completed, the finished asphalt is extracted from the discharge port, and then the external cleaning liquid infusion pipe is connected to the cleaning unit, and then the driving motor continues to rotate to wash away all the asphalt inside the main mixing barrel.

[0021] The beneficial effects of the present invention are as follows: 1. The stirring drum provided in the present invention can realize internal and external convection of the asphalt on the inner and outer sides of the main mixing barrel through the rotation of the convection element, so as to ensure that the asphalt temperatures on both sides are within the required range during stirring; the stirring drum can also drive the convection element to revolve around the driving main shaft through the drum body to make the internal and external convection of the asphalt uniform.

[0022] 2. The convection element on the stirring drum provided in the present invention can cooperate with the annular guide groove on the driving main shaft so that the convection element can move up and down while revolving around the driving main shaft. Moreover, due to the staggered arrangement of the shifting rack, each time the convection element moves up and down, the adjacent convection fans on the same convection element rotate in opposite directions, making the convection in the barrel more complex and the temperature of the asphalt inside and outside more uniform.

[0023] 3. The driving main shaft and the stirring drum of the present invention have different angular velocities during rotation, so the position of the annular guide groove is always changing, so that the position of the convection element is different each time, so that the asphalt in the barrel can produce convection without dead angles.

[0024] 4. The wireless temperature detector provided in the present invention can follow the convection element to revolve around the driving main shaft, and can also move up and down, which can perform more accurate and comprehensive detection of the temperature of the asphalt, so that the staff can more clearly understand the temperature of the asphalt in various parts of the barrel, so as to facilitate the adjustment of the power of the heating device.

[0025] 5. The stirring paddle provided in the present invention can rotate while revolving around the driving main shaft, evenly turning the asphalt on the upper and lower sides, so that the asphalt on the upper and lower sides is evenly mixed with the asphalt in the center, making the temperature of the asphalt in the entire barrel more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and examples.

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 yes Figure 1 Enlarged view of point I.

[0029] Figure 3 yes Figure 1 Enlarged view of point II.

[0030] Figure 4 It is a structural schematic diagram of the driving spindle of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the driving main shaft and the stirring drum of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the stirring drum of the present invention.

[0033] Figure 7 yes Figure 6 Enlarged view of point III.

[0034] Figure 8 It is a structural schematic diagram of the convection element of the present invention.

[0035] In the figure: 1. Main mixing barrel; 11. Motor mounting bracket; 111. Driving motor; 12. Feed port; 13. Discharge port; 14. Transmission gear; 2. Driving main shaft; 21. Driving gear plate; 22. Annular guide groove; 23. Driving gear; 3. Stirring cylinder; 31. Cylinder body; 311. Paddle gear; 32. Stirring paddle; 321. Stirring shaft; 322. Bevel gear; 33. Sliding groove; 331. Through groove; 332. Connecting groove; 34. Convection element; 341. Blocking plate; 342. Guide end; 343. Rotating rod; 344. Paddle gear; 345. Convection fan; 346. Wireless temperature detector; 35. Driving gear ring; 4. Cleaning unit; 41. Cleaning liquid inlet; 42. Cleaning liquid nozzle. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0037] See Figure 1 A pouring type asphalt concrete intelligent mixing temperature control device includes a main mixing barrel 1, a heating device is provided on the side wall of the main mixing barrel 1, a motor mounting bracket 11 is fixedly connected to the bottom of the main mixing barrel 1, a driving motor 111 is fixedly installed on the motor mounting bracket 11, a feeding port 12 is fixedly connected to the outside of the main mixing barrel 1, a discharging port 13 is fixedly connected to the bottom of the side wall of the main mixing barrel 1, the output shaft of the driving motor 111 passes through the bottom of the main mixing barrel 1, and the part of the output shaft of the driving motor 111 passing through the bottom of the main mixing barrel 1 is fixedly connected to a driving main shaft 2, a stirring cylinder 3 is sleeved on the outside of the driving main shaft 2, and a cleaning unit 4 is provided above the main mixing barrel 1.

[0038] The present invention can stir the asphalt in the main mixing barrel 1 evenly and without dead angles, and can make the temperature of the asphalt at various locations in the barrel tend to be consistent.

[0039] Specifically, the asphalt and ore powder to be mixed are first added from the feed port 12 respectively, and then the drive motor 111 is turned on. Then the drive motor 111 drives the drive shaft 2 to rotate, and the drive shaft 2 drives the stirring drum 3 to rotate, and the stirring drum 3 stirs the asphalt evenly.

[0040] See Figure 4 The driving main shaft 2 is a stepped shaft, and the driving gear discs 21 are fixedly connected to the shoulders on both sides of the driving main shaft 2. A plurality of annular guide grooves 22 are provided on the circumferential surface of the driving main shaft 2 and in the middle part of the driving gear discs 21 on both sides. A driving gear 23 is fixedly connected to the lower end of the driving gear disc 21 on the lower side of the driving main shaft 2.

[0041] The driving main shaft 2 provided in the present invention is used to transmit the power of the driving motor 111 to the stirring drum 3 .

[0042] See Figure 1-Figure 3The stirring drum 3 includes a drum body 31 sleeved on the outside of the driving main shaft 2, and the upper and lower ends of the drum body 31 are respectively rotatably connected to the upper and lower ends of the inner side of the main stirring barrel 1. A plurality of stirring paddles 32 are rotatably connected to the upper and lower ends of the circumferential surface of the drum body 31. A plurality of sliding grooves 33 are provided on the circumferential surface of the drum body 31 and between the stirring paddles 32 at the upper and lower ends. A convection member 34 is slidably connected in the sliding groove 33. The lower end of the stirring paddle 32 on the lower side of the drum body 31 is fixedly connected to a driving ring gear 35; a transmission gear 14 is rotatably connected to the bottom of the inner side of the main stirring barrel 1 and located between the driving main shaft 2 and the stirring drum 3. The transmission gear 14 is respectively meshed with the driving gear 23 and the driving ring gear 35, so that the driving main The power of the shaft 2 is transmitted to the stirring drum 3 through the transmission gear 14, but due to the different radii of the driving gear 23 and the driving ring gear 35, there is a difference in angular velocity between the driving main shaft 2 and the stirring drum 3 during rotation; the stirring paddle 32 includes a stirring shaft 321 rotatably connected to the cylinder body 31, the stirring shaft 321 passes through the cylinder body 31, and the stirring shaft 321 is located on the inner side of the cylinder body 31. One end is fixedly connected to the bevel gear 322, and the bevel gears 322 of the stirring paddles 32 on the upper and lower sides are respectively engaged with the driving gear discs 21 at their corresponding positions. Since there is a difference in angular velocity between the driving main shaft 2 and the stirring drum 3 during rotation, the stirring paddle 32 is driven to rotate by the bevel gear 322 when the driving main shaft 2 rotates.

[0043] The stirring paddle 32 provided in the present invention can rotate while revolving around the driving main shaft 2 through the engagement of the bevel gear 322 with the driving gear disc 21 at its corresponding position, evenly turning the asphalt on the upper and lower sides, so that the asphalt on the upper and lower sides is evenly mixed with the asphalt in the center, making the temperature of the asphalt in the entire barrel uniform.

[0044] Specifically, first, the asphalt and mineral powder to be mixed are respectively put into the feed port 12, and then the drive motor 111 is turned on. The drive motor 111 drives the drive main shaft 2 to rotate. The drive main shaft 2 drives the stirring drum 3 to rotate through the engagement of the drive gear 23, the transmission gear 14 and the drive ring gear 35. However, due to the different radii of the drive gear 23 and the drive ring gear 35, there is a difference in angular velocity between the drive main shaft 2 and the drum body 31 during rotation. The angular velocity of the drive main shaft 2 is slightly greater than the angular velocity of the drum body 31. At the same time, the bevel gear 322 engages with the drive gear disc 21. Under the action of the speed difference between the drive main shaft 2 and the stirring drum 3, the bevel gear 322 drives the stirring paddle 32 to rotate on its own. At the same time, the drum body 31 drives the stirring paddle 32 to rotate around the drive main shaft 2. The stirring paddle 32 evenly mixes the asphalt on the upper and lower sides with the asphalt in the center.

[0045] See Figure 5-Figure 8The cam 331 is provided with a plurality of through slots 331 arranged side by side in the vertical direction, and the through slots 331 pass through the barrel 31. The plurality of through slots 331 arranged side by side in the vertical direction are connected to each other through connecting slots 332, and the connecting slots 332 are slightly wider than the through slots 331. The connection between the portion of the blocking plate 341 slidably connected to the connecting slot 332 and the barrel 31 is provided with a sealing strip to prevent asphalt from entering the barrel 31 and affecting the transmission and making it difficult to clean. The convection member 34 includes a blocking plate 341 slidably connected to the connecting slot 332. The blocking plate 341 is slidably connected to the guide end 342 on one side close to the driving main shaft 2. A rotating rod 343 is slidably passed through the other side of the blocking plate 341 at a corresponding position of the guide end 342. The number of the rotating rods 343 is the same as the through slots 331, and the rotating rod 343 passes through the through slots 331 outwardly, and the guide end 342 passes through the through slots 331 inwardly and is inserted into the annular guide slot 22. When the driving main shaft 2 drives the stirring drum 3 to rotate, the annular guide groove 22 drives the convection member 34 to move up and down, and a toggle gear 344 is fixedly connected to the rotating rod 343. The end of the rotating rod 343 away from the blocking plate 341 is fixedly connected to the convection fan 345. A wireless temperature detector 346 is fixedly connected in the middle of the convection fan 345, and the lengths of the two adjacent rotating rods 343 on the same convection member 34 are different; a toggle rack 311 is fixedly connected to the cylinder body 31 and located on one side of the through groove 331, and the two adjacent toggle racks 311 are staggered with each other. The two are respectively located on both sides of the through groove 331, and the toggle racks 311 are engaged with the toggle gear 344. When the annular guide groove 22 drives the convection member 34 to move up and down, the two adjacent convection fans 345 on the same convection member 34 rotate in opposite directions due to the mutual staggering of the two adjacent toggle racks 311.

[0046] See Figure 4-Figure 5 、 Figure 8 A plurality of protrusions are evenly and fixedly connected in the annular guide groove 22. When the convection member 34 slides in the annular guide groove 22, the protrusions push the rotating rod 343 outward through the guide end 342 to increase the stirring effect.

[0047] The stirring drum 3 provided in the present invention can realize internal and external convection of the asphalt on the inner and outer sides of the main mixing drum 1 through the rotation of the convection member 34, so as to ensure that the asphalt temperature on both sides is within the required range during stirring; the stirring drum 3 can also drive the convection member 34 to revolve around the driving main shaft 2 through the drum body 31 to make the internal and external convection of the asphalt uniform, and the convection member 34 can also cooperate with the annular guide groove 22 on the driving main shaft 2 to make the convection member 34 move up and down while revolving around the driving main shaft 2, and due to the staggered arrangement of the toggle rack 311, each time the convection member 34 moves up and down, the adjacent convection fans 345 on the same convection member 34 rotate in opposite directions, making the convection in the barrel more complex and the temperature of the asphalt inside and outside more uniform; there is a difference in angular velocity between the driving main shaft 2 and the stirring drum 3 provided in the present invention during rotation, so the position of the annular guide groove 22 is always changing, so that the up and down positions of the convection member 34 are different each time, so that the asphalt in the barrel can generate convection without dead angles.

[0048] Specifically, when the driving motor 111 drives the driving main shaft 2 and the stirring drum 3 to rotate, due to the speed difference between the driving main shaft 2 and the stirring drum 3, the convection member 34 will move relative to the driving main shaft 2 when rotating between the following drum body 31, and the guide end 342 and the annular guide groove 22 cooperate with each other, so that the convection member 34 can slide up and down along the connecting groove 332. At the same time, the toggle rack 311 is engaged with the toggle gear 344, so that the convection fan 345 can rotate around the rotating rod 343. The convection fan 345 can move the area where it is located like a fan. The asphalt forms convection in the inside-outside direction, making the temperature of the asphalt on both sides tend to be consistent, and the two adjacent convection fans 345 on the same convection part 34 are offset from each other due to the two adjacent shifting racks 311, so that the two adjacent convection fans 345 rotate in opposite directions, and can also follow the barrel 31 to revolve around the driving main shaft 2, thereby making the temperature of the asphalt in the barrel more uniform; and in the above process, since the driving main shaft 2 itself is also rotating, the position of the convection part 34 is different each time it rises and falls, which can effectively eliminate the dead corners in the barrel that the convection part 34 cannot reach.

[0049] See Figure 5 、 Figure 8 The wireless temperature detector 346 provided in the present invention can follow the convection element 34 to revolve around the driving main shaft 2, and can also move up and down, so as to perform more accurate and comprehensive detection of the temperature of the asphalt, so that the staff can more clearly understand the temperature of the asphalt in each part of the barrel, so as to facilitate the adjustment of the power of the heating device.

[0050] Specifically, the convection element 34 can drive the wireless temperature detector 346 to rotate around the driving main shaft 2 and move up and down according to the movement described above, so that the wireless temperature detector 346 can detect the temperature of multiple points in the barrel.

[0051] See Figure 1 The cleaning unit 4 includes a cleaning liquid inlet 41 fixedly connected to the cover plate on the top of the main stirring barrel 1, and a plurality of cleaning liquid nozzles 42 are evenly fixedly installed on the inner side of the cover plate on the top of the main stirring barrel 1. The top cover plate of the main stirring barrel 1 is provided with a hollow structure, and the cleaning liquid nozzles 42 and the cleaning liquid inlet 41 are connected to each other through the hollow structure of the top cover plate of the main stirring barrel 1.

[0052] Specifically, after the mixing is completed, the finished asphalt is extracted from the discharge port 13, and then the external cleaning liquid infusion pipe is connected to the cleaning liquid inlet 41. Then the asphalt cleaning liquid enters the hollow structure of the top cover of the main mixing barrel 1 from the cleaning liquid inlet 41, and then is evenly sprayed out from the cleaning liquid nozzle 42. Finally, the driving motor 111 continues to rotate to wash away all the asphalt inside the main mixing barrel 1.

[0053] In addition, the present invention also provides a method for intelligent temperature control of poured asphalt concrete mixing, and the specific steps are as follows: S1, preparation: the asphalt to be mixed and the ore powder are added from the feed port 12, and then the drive motor 111 is turned on.

[0054] S2. Longitudinal stirring: The driving motor 111 drives the driving main shaft 2 to rotate, and the driving main shaft 2 drives the stirring drum 3 to rotate. However, due to the difference in angular velocity between the driving main shaft 2 and the drum body 31 during rotation, the angular velocity of the driving main shaft 2 is slightly greater than the angular velocity of the drum body 31. At the same time, the bevel gear 322 is engaged with the driving gear disc 21. Under the action of the speed difference between the driving main shaft 2 and the stirring drum 3, the bevel gear 322 drives the stirring paddle 32 to rotate on its own. At the same time, the drum body 31 drives the stirring paddle 32 to rotate around the driving main shaft 2. The stirring paddle 32 evenly mixes the asphalt on the upper and lower sides with the asphalt in the center.

[0055] S3, convection stirring: When the driving motor 111 drives the driving main shaft 2 and the stirring drum 3 to rotate, due to the speed difference between the driving main shaft 2 and the stirring drum 3, the convection member 34 will move relative to the driving main shaft 2 when following the drum body 31. The guide end 342 and the annular guide groove 22 cooperate with each other, so that the convection member 34 can slide up and down along the connecting groove 332. At the same time, the toggle rack 311 is engaged with the toggle gear 344, so that the convection fan 345 can rotate around the rotating rod 343. The convection fan 345 can, like a fan, move the dew point in the area where it is located. Convection is formed in the inside-outside direction, so that the temperature of the asphalt on the inside and outside sides tends to be consistent, and the two adjacent convection fans 345 on the same convection part 34 are offset from each other by the two adjacent toggle racks 311, so that the two adjacent convection fans 345 rotate in opposite directions, and can also follow the barrel 31 to revolve around the driving main shaft 2, thereby making the temperature of the asphalt in the barrel more uniform; the convection part 34 can drive the wireless temperature detector 346 to rotate and move up and down around the driving main shaft 2 according to the movement described above, so that the wireless temperature detector 346 can detect the temperature of multiple points in the barrel.

[0056] S4. Subsequent cleaning: After the mixing is completed, the finished asphalt is extracted from the discharge port 13, and then the external cleaning liquid infusion pipe is connected to the cleaning liquid inlet 41. Then the asphalt cleaning liquid enters the hollow structure of the top cover of the main mixing barrel 1 from the cleaning liquid inlet 41, and is then evenly sprayed out from the cleaning liquid nozzle 42. Finally, the driving motor 111 continues to rotate to wash away all the asphalt inside the main mixing barrel 1.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered by the scope of protection of the present invention.

Claims

1. A pouring type asphalt concrete intelligent mixing temperature control device, comprising a main mixing barrel (1), a side wall of the main mixing barrel (1) is provided with a heating device, a motor mounting frame (11) is fixedly connected to the bottom of the main mixing barrel (1), a driving motor (111) is fixedly installed on the motor mounting frame (11), a feed port (12) is fixedly connected to the outside of the main mixing barrel (1), and a discharge port (13) is fixedly connected to the bottom of the side wall of the main mixing barrel (1), characterized in that: The output shaft of the driving motor (111) passes through the bottom of the main stirring barrel (1); the portion of the output shaft of the driving motor (111) passing through the bottom of the main stirring barrel (1) is fixedly connected to the driving main shaft (2); the outer side of the driving main shaft (2) is provided with a stirring cylinder (3); and a cleaning unit (4) is provided above the main stirring barrel (1); The driving main shaft (2) is a stepped shaft, and driving toothed discs (21) are fixedly connected to the shoulders on both sides of the driving main shaft. A plurality of annular guide grooves (22) are provided on the circumferential surface of the driving main shaft (2) and in the middle of the driving toothed discs (21) on both sides. A driving gear (23) is fixedly connected to the lower end of the driving toothed disc (21) on the driving main shaft (2) and located on the lower side. The stirring cylinder (3) comprises a cylinder body (31) sleeved on the outside of the driving main shaft (2), the upper and lower ends of the cylinder body (31) are respectively rotatably connected to the upper and lower ends of the inner side of the main stirring barrel (1), the upper and lower ends of the circumferential surface of the cylinder body (31) are rotatably connected to a plurality of stirring paddles (32), a plurality of sliding grooves (33) are provided on the circumferential surface of the cylinder body (31) and between the stirring paddles (32) at the upper and lower ends, a convection member (34) is slidably connected in the sliding grooves (33), and the lower end of the stirring paddle (32) on the lower side of the cylinder body (31) is fixedly connected to a driving gear ring (35); A transmission gear (14) is rotatably connected on the bottom of the inner side of the main stirring barrel (1) and located between the driving main shaft (2) and the stirring drum (3). The transmission gear (14) is respectively engaged with the driving gear (23) and the driving ring gear (35), so that the power of the driving main shaft (2) is transmitted to the stirring drum (3) through the transmission gear (14). However, due to the different radii of the driving gear (23) and the driving ring gear (35), there is a difference in the angular velocity of the driving main shaft (2) and the stirring drum (3) when they rotate. When the driving main shaft (2) drives the stirring cylinder (3) to rotate, the annular guide groove (22) drives the convection member (34) to move up and down. A toggle rack (311) is fixedly connected to the cylinder body (31) and located on one side of the through groove (331). Two adjacent toggle racks (311) are staggered with each other and are respectively located on both sides of the through groove (331). The toggle racks (311) are engaged with the toggle gear (344). When the annular guide groove (22) drives the convection member (34) to move up and down, two adjacent convection fans (345) on the same convection member (34) rotate in opposite directions due to the mutual staggering of the two adjacent toggle racks (311). A plurality of protrusions are evenly and fixedly connected in the annular guide groove (22). When the convection element (34) slides in the annular guide groove (22), the protrusions push the rotating rod (343) outward through the guide end (342) to increase the stirring effect. The convection member (34) includes a blocking plate (341) slidably connected to the connecting groove (332), a guide end (342) is slidably connected to one side of the blocking plate (341) close to the driving main shaft (2), and a rotating rod (343) is slidably penetrated at a position corresponding to the guide end (342) on the other side of the blocking plate (341), the number of the rotating rods (343) is the same as the through groove (331), and the rotating rods (343) pass through the through groove (331) outward. The guide end (342) passes through the through groove (331) inwardly and is inserted into the annular guide groove (22). The rotating rod (343) is fixedly connected to a toggle gear (344). One end of the rotating rod (343) away from the blocking plate (341) is fixedly connected to a convection fan (345). A wireless temperature detector (346) is fixedly connected in the middle of the convection fan (345). The lengths of the two adjacent rotating rods (343) on the same convection member (34) are different.

2. The intelligent temperature control device for pouring asphalt concrete mixing according to claim 1, characterized in that: The stirring paddle (32) includes a stirring shaft (321) rotatably connected to the barrel (31), the stirring shaft (321) passes through the barrel (31), and one end of the stirring shaft (321) located inside the barrel (31) is fixedly connected to a bevel gear (322). The bevel gears (322) of the stirring paddles (32) on the upper and lower sides respectively mesh with the driving gear discs (21) at their corresponding positions. Since there is a difference in angular velocity between the driving main shaft (2) and the stirring barrel (3) during rotation, the stirring paddle (32) is driven to rotate via the bevel gear (322) when the driving main shaft (2) rotates.

3. The intelligent temperature control device for pouring asphalt concrete mixing according to claim 1, characterized in that: The sliding groove (33) comprises a plurality of through grooves (331) arranged side by side in the vertical direction, the through grooves (331) passing through the barrel (31), and the plurality of through grooves (331) arranged side by side in the vertical direction are interconnected via connecting grooves (332), and the connecting grooves (332) are slightly wider than the through grooves (331).

4. The intelligent temperature control device for pouring asphalt concrete mixing according to claim 1, characterized in that: A sealing strip is provided at the connection between the portion of the blocking plate (341) that is slidably connected to the connection groove (332) and the cylinder body (31) to prevent asphalt from entering the cylinder body (31) and affecting transmission and making cleaning difficult.

5. The intelligent temperature control device for pouring asphalt concrete mixing according to claim 1, characterized in that: The cleaning unit (4) comprises a cleaning liquid inlet (41) fixedly connected to the cover plate on the top of the main stirring barrel (1), a plurality of cleaning liquid nozzles (42) evenly fixedly installed on the inner side of the cover plate on the top of the main stirring barrel (1), and a hollow structure is provided on the top cover plate of the main stirring barrel (1), and the cleaning liquid nozzles (42) and the cleaning liquid inlet (41) are connected to each other through the hollow structure of the top cover plate of the main stirring barrel (1).

6. A pouring type asphalt concrete intelligent mixing temperature control method, characterized in that: The method for intelligently controlling the temperature of poured asphalt concrete by using the intelligent mixing temperature control device for poured asphalt concrete according to any one of claims 1 to 5 above comprises the following specific steps: S1. Preparation: Asphalt and ore powder to be mixed are fed into the feed port (12), and then the drive motor (111) is turned on; S2, longitudinal stirring: the driving motor (111) drives the driving main shaft (2) to rotate, and the driving main shaft (2) drives the stirring drum (3) to rotate. However, due to the difference in angular velocity between the driving main shaft (2) and the stirring drum (3), the angular velocity of the driving main shaft (2) is slightly greater than the angular velocity of the stirring drum (3). At the same time, the driving main shaft (2) drives the stirring paddle (32) to rotate, and the stirring drum (3) drives the stirring paddle (32) to rotate around the driving main shaft (2). The stirring paddle (32) evenly mixes the asphalt on the upper and lower sides with the asphalt in the center. S3, convection stirring: when the driving motor (111) drives the driving main shaft (2) and the stirring drum (3) to rotate, due to the speed difference between the driving main shaft (2) and the stirring drum (3), the convection member (34) will move relative to the driving main shaft (2) when rotating with the drum body (31). Under the action of the annular guide groove (22), the convection member (34) slides up and down. At the same time, the convection member (34) rotates, which can form an inward and outward convection of the asphalt in the area where it is located, so that the temperature of the asphalt on both sides tends to be consistent. It can also follow the drum body (31) to revolve around the driving main shaft (2), thereby making the temperature of the asphalt in the barrel more uniform. The convection member (34) can also detect the temperature of multiple points in the barrel, so that the staff can more clearly understand the temperature of the asphalt in each part of the barrel, so as to facilitate the adjustment of the power of the heating device. S4. Subsequent cleaning: After the mixing is completed, the finished asphalt is extracted from the discharge port (13), and then the external cleaning liquid infusion pipe is connected to the cleaning unit (4), and then the driving motor (111) continues to rotate to wash away all the asphalt inside the main mixing barrel (1).

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