Asphalt raw material drying apparatus

Abstract

The utility model provides a kind of asphalt raw material drying equipment, including drying tank, conveying mechanism, heater and controller, drying tank is equipped with shaft one, and shaft one is driven to be connected with driving motor, multiple stirring rods are equipped on shaft one, drying tank top surface is equipped with feed hopper, conveying mechanism is located above feed hopper, conveying mechanism is used to convey asphalt raw material from feed hopper into drying tank, drying tank top surface is equipped with box, drying tank is communicated with box by heat pipe, box is equipped with tank, tank bottom is equipped with feed pipe, feed pipe one end is communicated with feed hopper, adjustable flow valve is equipped on feed pipe, box top is equipped with exhaust pipe and charging port, tank top is equipped with feed pipe, feed pipe is communicated with outside by charging port, heater is communicated in drying tank by hot air pipe.The utility model sets up box, heat recovery is carried out to water vapor in drying tank by heat pipe, asphalt in tank is heated, improve heat utilization, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of asphalt drying technology, and in particular to an asphalt raw material drying device. Background Technology

[0002] Asphalt is a dark brown, complex mixture composed of hydrocarbons of varying molecular weights and their non-metallic derivatives, belonging to the category of high-viscosity organic liquids. It is liquid with a black surface, soluble in carbon disulfide, and possesses waterproof, moisture-proof, and corrosion-resistant properties. Due to its unique physical and chemical properties, asphalt is widely used in industries such as coatings, plastics, and rubber, as well as in road paving.

[0003] In the production process of asphalt products, the selection and processing of raw materials are crucial steps. Choosing suitable asphalt raw materials, such as aggregates, stone powder, and fine sand, requires ensuring their quality meets production requirements and undergoing necessary inspection and pretreatment to remove impurities. Subsequently, the asphalt is heated and melted to a molten state, then sprayed and mixed with aggregates, stone powder, and fine sand. After heating, mixing, and drying, it reaches the predetermined asphalt product state for subsequent paving operations. Drying the asphalt raw materials is a vital step in the production process. Asphalt raw material drying equipment provides the necessary heat to convert the moisture in the asphalt raw materials into water vapor, achieving the appropriate degree of dryness. The performance of the drying equipment directly affects the drying effect of the asphalt raw materials and the product quality.

[0004] Currently, various asphalt raw material drying equipment exists on the market. These devices use heaters to provide the necessary heat, converting the moisture in the asphalt raw material into water vapor, which is then discharged to achieve the desired degree of dryness. However, during the drying process, the water vapor in existing asphalt raw material drying equipment still contains a large amount of heat, which is directly discharged through the exhaust pipe. This results in a significant amount of heat not being recovered and utilized, leading to low heat utilization, high energy consumption, and increased production costs. Utility Model Content

[0005] In view of this, the present invention proposes an asphalt raw material drying device to solve the problems mentioned above.

[0006] The technical solution of this utility model is implemented as follows:

[0007] An asphalt raw material drying device includes a drying tank, a conveying mechanism, a heater, and a controller. A rotating shaft is rotatably mounted inside the drying tank, one end of which passes through the tank body and extends to the outside, while the other end passes through the tank body and is connected to a drive motor. The drive motor is located on the side of the drying tank. Multiple stirring rods are mounted on the rotating shaft. A feed hopper is located on the top surface of the drying tank. The conveying mechanism is located on one side of the drying tank, with its end positioned above the feed hopper. The conveying mechanism is used to transport asphalt raw materials from the feed hopper into the drying tank. The tank body is located on the top surface of the drying tank, and the drying tank is connected to the tank body via a heat-conducting pipe. The container contains a material tank, with a feed pipe at the bottom of the material tank. One end of the feed pipe is connected to the feed hopper, and an adjustable flow valve is provided on the feed pipe. The top of the container contains an exhaust pipe and a feeding port. The top of the material tank contains a feeding pipe, which is connected to the outside through the feeding port. The heater is located on one side of the drying tank and is connected to the drying tank through a hot air pipe. The bottom of the drying tank contains a discharge section, and the bottom of the discharge section contains a discharge valve. The controller is located on the side of the heater and is electrically connected to the conveying mechanism, the drive motor, the heater, the adjustable flow valve, and the discharge valve.

[0008] Preferably, the conveying mechanism includes a conveyor belt, a support plate, a weighing sensor, and a frame. The conveyor belt is located on one side of the drying tank, with its end above the feed inlet. The support plate is located opposite to both ends of the conveyor belt. The frame is located below the conveyor belt, and its side is connected to the support plate via a weighing sensor.

[0009] Preferably, it also includes a feeding bin, a feeding valve, and a support frame. The feeding bin is located above the conveyor belt and at the end away from the feed hopper. The feeding valve is provided at the bottom of the feeding bin. The feeding bin is fixedly connected to the frame through the support frame.

[0010] Preferably, the heat-conducting pipe and the exhaust pipe are respectively located at both ends of the housing.

[0011] Preferably, it also includes a second rotating shaft, a spiral blade, and a drive mechanism. The second rotating shaft is rotatably disposed inside the material tank, with one end rotatably connected to the material tank and the other end passing through the material tank and driven by the drive mechanism. The drive mechanism is disposed on the side of the material tank and is used to start the rotation of the second rotating shaft. The spiral blade is disposed on the second rotating shaft.

[0012] Preferably, the drive mechanism includes a drive wheel, a driven wheel, and a belt. The drive wheel is mounted on a first rotating shaft, the driven wheel is mounted on a second rotating shaft, and the belt is respectively mounted on the drive wheel and the driven wheel.

[0013] Preferably, it also includes a feeding cover, which is located at the top of the feeding tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Equipped with a box, heat is recovered from the water vapor in the drying tank through heat conduction pipes. When the drying equipment is working, the water vapor containing heat enters one end of the box through the heat conduction pipes and transfers the heat to the material tank. After being heated, the material tank begins to heat and soften the asphalt. The heated asphalt has improved fluidity, which is conducive to smooth spraying from the feed pipe, maintaining a stable flow rate, improving heat utilization, and reducing production costs.

[0016] 2. The conveying mechanism is equipped with a weighing sensor, which can monitor the weight of the raw materials on the conveyor belt in real time. When the conveying mechanism is working, the feeding hopper can evenly place the asphalt raw materials on the conveyor belt. The controller controls the flow rate of asphalt by setting an adjustable flow valve, and then controls the speed of the conveyor belt. This can achieve a proportional relationship between the asphalt raw materials and the asphalt flow rate, thereby meeting the quality requirements of the finished asphalt product. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of an asphalt raw material drying device according to the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of an asphalt raw material drying device according to the present invention;

[0020] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0021] Reference numerals: 1. Drying tank; 2. Box body; 3. Exhaust pipe; 4. Material tank; 5. Feed pipe; 6. Feed hopper; 7. Conveyor belt; 8. Feeding bin; 9. Support frame; 10. Support plate; 11. Weighing sensor; 12. Frame; 13. Heater; 14. Hot air pipe; 15. Drive motor; 16. Discharge section; 17. Discharge valve; 18. Support leg; 19. Heat conduction pipe; 20. Controller; 21. Belt; 22. Rotating shaft one; 23. Stirring rod; 24. Drive wheel; 25. Rotating shaft two; 26. Driven wheel; 27. Spiral blade; 28. Feeding cover; 29. ​​Feeding pipe; 30. Feeding valve; 31. Adjustable flow valve. Detailed Implementation

[0022] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0023] See Figures 1 to 3 This utility model provides an asphalt raw material drying device, including a drying tank 1, a conveying mechanism, a heater 13, and a controller 20. A rotating shaft 22 is rotatably mounted inside the drying tank 1, one end of which passes through a housing 2 and extends to the outside, while the other end passes through the housing 2 and is connected to a drive motor 15. The drive motor 15 is located on the side of the drying tank 1. Multiple stirring rods 23 are mounted on the rotating shaft 22. A feed hopper 6 is located on the top surface of the drying tank 1. The conveying mechanism is located on one side of the drying tank 1, with its end positioned above the feed hopper 6. The conveying mechanism is used to transport asphalt raw materials from the feed hopper 6 into the drying tank 1. The housing 2 is located on the top surface of the drying tank 1, and the drying tank 1 is connected to the housing 2 via a heat-conducting pipe 19. A material tank 4 is located inside the housing 2. The bottom of the material tank 4 is provided with a feed pipe 5, one end of which is connected to the feed hopper 6. The feed pipe 5 is provided with an adjustable flow valve 31. The top of the box body 2 is provided with an exhaust pipe 3 and a feeding port. The top of the material tank 4 is provided with a feeding pipe 29, which is connected to the outside through the feeding port. The heater 13 is located on one side of the drying tank 1 and is connected to the drying tank 1 through a hot air pipe 14. The bottom of the drying tank 1 is provided with a discharge section 16, and the bottom of the discharge section 16 is provided with a discharge valve 17. The controller 20 is located on the side of the heater 13 and is electrically connected to the conveying mechanism, the drive motor 15, the heater 13, the adjustable flow valve 31, and the discharge valve 17. The controller 20 uses a low-power microprocessor of model STM32-L0.

[0024] When the drying equipment is working, the drive motor 15 is started, which rotates the rotating shaft 22, thereby rotating the stirring rod 23. The transmission mechanism is activated to transport the asphalt raw material to the top of the feed hopper 6. The asphalt raw material falls from the transmission mechanism through the feed hopper 6 into the drying tank 1. At the same time, the adjustable flow valve 31 is activated, and the asphalt is sprayed out from the feed pipe 5, mixing with the asphalt raw material in the feed hopper 6 and falling into the drying tank 1 together. The asphalt raw material and asphalt are stirred by the stirring rod 23 in the drying tank 1. Meanwhile, the heater 13 fills the drying tank 1 with hot air through the hot air pipe 14, thereby heating the material. The moisture in the material evaporates after being heated, and the water vapor containing heat enters the chamber 2 through the heat conduction pipe 19, transferring heat to the material tank 4. The material tank 4 is heated and softens the asphalt, which is easier to spray out from the feed pipe 5 and maintain a stable flow rate. The heat generated by the heater 13 is not only used to dry the material, but also to recover and utilize the heat in the water vapor, improving the heat utilization rate, reducing the drying energy consumption of the equipment, and reducing production costs.

[0025] Preferably, the conveying mechanism includes a conveyor belt 7, a support plate 10, a weighing sensor 11, and a frame 12. The conveyor belt 7 is located on one side of the drying tank 1, with its end located above the feed inlet. The support plate 10 is located opposite to both ends of the conveyor belt 7. The frame 12 is located below the conveyor belt 7, and its side is connected to the support plate 10 through the weighing sensor 11. The weighing sensor 11 has a cantilever beam structure and is used to monitor the weight of the raw material on the conveyor belt 7 in real time.

[0026] When the conveying mechanism is working, the asphalt raw material is first evenly placed on the conveyor belt. The controller 20 controls the flow rate of the asphalt by setting the adjustable flow valve 31, and then controls the speed of the conveyor belt. This can make the asphalt raw material and the asphalt flow rate proportional, thereby meeting the quality requirements of the finished asphalt product.

[0027] Preferably, it also includes a feeding bin 8, a feeding valve 30, and a support frame 9. The feeding bin 8 is located above the conveyor belt 7 and at the end away from the feed hopper 6. The bottom of the feeding bin 8 is provided with a feeding valve 30, which is used to control the feeding speed and amount of raw materials. The feeding bin 8 is fixedly connected to the frame 12 through the support frame 9.

[0028] When the conveying mechanism is working, the asphalt raw material is first put into the feeding bin 8. Then, the controller 20 monitors the weight of the asphalt raw material on the conveyor belt in real time according to the weighing sensor 11, adjusts the opening of the feeding valve 30 and controls the transmission speed of the conveyor belt, so that the asphalt raw material can be evenly placed on the conveyor belt.

[0029] Preferably, the heat pipe 19 and the exhaust pipe 3 are respectively located at both ends of the housing 2.

[0030] When the drying equipment is working, water vapor containing heat enters one end of the box 2 through the heat pipe 19 and transfers heat to the material tank 4. After being heated, the material tank 4 begins to heat and soften the asphalt. The water vapor that has released heat is discharged from the other end of the box 2 through the exhaust pipe 3. The heat pipe 19 and the exhaust pipe 3 are respectively located at both ends of the box 2, which increases the water vapor transmission path, thereby increasing the heat dissipation area and improving the heat recovery effect.

[0031] Preferably, it also includes a second rotating shaft 25, a spiral blade 27, and a driving mechanism. The second rotating shaft 25 is rotatably disposed inside the material tank 4, with one end rotatably connected to the material tank 4 and the other end passing through the material tank 4 and driven by the driving mechanism. The driving mechanism is disposed on the side of the material tank 4 and is used to start the rotation of the second rotating shaft 25. The spiral blade 27 is disposed on the second rotating shaft 25.

[0032] The drive mechanism drives the second shaft 25 to rotate. After receiving power from the drive mechanism, the second shaft 25 begins to rotate, which in turn drives the spiral blade 27 to rotate as well. The rotation of the spiral blade 27 stirs the asphalt in the material tank 4 and transports it along the axial direction of the material tank 4, which is beneficial for uniformly heating and softening the asphalt.

[0033] Preferably, the drive mechanism includes a drive wheel 24, a driven wheel 26, and a belt 21. The drive wheel 24 is mounted on a first rotating shaft 22, the driven wheel 26 is mounted on a second rotating shaft 25, and the belt 21 is respectively mounted on the drive wheel 24 and the driven wheel 26. The belt 21 rotates with the drive wheel 24 and the driven wheel 26 by friction.

[0034] When the drive motor 15 starts, it drives the rotating shaft 22 to rotate. The rotation of the rotating shaft 22 drives the driving pulley 24 to rotate. The belt 21 will rotate along with the driving pulley 24 due to friction. The belt 21 transmits the rotational power to the driven pulley 26, thereby driving the rotating shaft 25 to rotate. Because the belt 21 has a certain degree of elasticity and friction, it can adapt to the small deviations between the driving pulley 24 and the driven pulley 26, ensuring the smoothness and reliability of the transmission.

[0035] Preferably, it also includes a feeding cover 28, which is disposed at the top of the feeding tube 29.

[0036] The feed cover 28 is used to seal the feed pipe 29 to prevent hot air or other harmful substances from escaping from the feed port during the drying process of the asphalt raw material, thereby ensuring a safe and clean operating environment.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bitumen raw material drying device, characterized in that, The system includes a drying tank, a conveying mechanism, a heater, and a controller. A rotating shaft is rotatably mounted inside the drying tank, with one end passing through the tank body and extending outwards, and the other end passing through the tank body and connected to a drive motor. The drive motor is located on the side of the drying tank. Multiple stirring rods are mounted on the rotating shaft. A feed hopper is located on the top surface of the drying tank. The conveying mechanism is located on one side of the drying tank, with its end positioned above the feed hopper. The conveying mechanism is used to transport asphalt raw materials from the feed hopper into the drying tank. A tank body is located on the top surface of the drying tank, and the drying tank is connected to the tank body via a heat-conducting pipe. The container is equipped with a material tank, a feed pipe at the bottom of the material tank, one end of the feed pipe being connected to the feed hopper, and an adjustable flow valve on the feed pipe. The top of the container is equipped with an exhaust pipe and a feeding port. The top of the material tank is equipped with a feeding pipe, which is connected to the outside through the feeding port. The heater is located on one side of the drying tank and is connected to the drying tank through a hot air pipe. The bottom of the drying tank is equipped with a discharge section, and the bottom of the discharge section is equipped with a discharge valve. The controller is located on the side of the heater and is electrically connected to the conveying mechanism, the drive motor, the heater, the adjustable flow valve, and the discharge valve.

2. The asphalt raw material drying equipment according to claim 1, characterized in that, The conveying mechanism includes a conveyor belt, a support plate, a weighing sensor, and a frame. The conveyor belt is located on one side of the drying tank, with its end above the feed inlet. The support plate is located opposite to both ends of the conveyor belt. The frame is located below the conveyor belt, and its side is connected to the support plate through the weighing sensor.

3. The asphalt raw material drying equipment according to claim 2, characterized in that, It also includes a feeding bin, a feeding valve, and a support frame. The feeding bin is located above the conveyor belt and at the end away from the feed hopper. The feeding valve is located at the bottom of the feeding bin. The feeding bin is fixedly connected to the frame through the support frame.

4. The asphalt raw material drying equipment according to claim 1, characterized in that, The heat pipe and the exhaust pipe are respectively located at both ends of the box.

5. The asphalt raw material drying equipment according to claim 1, characterized in that, It also includes a second rotating shaft, a spiral blade, and a drive mechanism. The second rotating shaft is rotatably disposed inside the material tank, with one end rotatably connected to the material tank and the other end passing through the material tank and driven by the drive mechanism. The drive mechanism is disposed on the side of the material tank and is used to start the rotation of the second rotating shaft. The spiral blade is disposed on the second rotating shaft.

6. The asphalt raw material drying equipment according to claim 5, characterized in that, The drive mechanism includes a drive wheel, a driven wheel, and a belt. The drive wheel is mounted on a first rotating shaft, the driven wheel is mounted on a second rotating shaft, and the belt is respectively fitted onto the drive wheel and the driven wheel.

7. The asphalt raw material drying equipment according to claim 1, characterized in that, It also includes a feeding cover, which is located at the top of the feeding tube.

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