A microwave heating device for asphalt mix
By using a servo motor-driven bevel gear system and activated carbon mesh to purify odors, the problem of odor pollution during the heating process of microwave heating devices for asphalt mixtures has been solved, achieving an environmentally friendly and efficient heating effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN FERGUSON ROAD MAINTENANCE TECH CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-29
AI Technical Summary
Existing microwave heating devices for asphalt mixtures emit odors directly during the heating process, polluting the environment and affecting their environmental performance.
A servo motor drives a bevel gear system to rotate the tank and fan blades. Centrifugal force is used to stir the asphalt and the odor in the hot air is purified by an activated carbon mesh plate, preventing the odor from being directly discharged.
This effectively avoids odor pollution and improves the environmental performance and heating efficiency of the device.
Smart Images

Figure CN224299738U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microwave heating technology for asphalt, and more specifically to a microwave heating device for asphalt mixtures. Background Technology
[0002] In the field of road engineering, heating asphalt mixtures is a crucial step in the construction process. Microwave heating technology, as an emerging heating method, has received widespread attention and research in recent years. Microwaves refer to electromagnetic waves with frequencies between 300MHz and 300GHz. When microwaves radiate onto a material, the polar molecules within the material (such as water molecules) rapidly rotate and vibrate under the influence of the microwave electric field, generating a friction-like effect that converts microwave energy into heat energy, achieving rapid heating of the material.
[0003] As shown in the prior art published in CN220643798U, although this prior art, through a simple design, allows the asphalt mixture to be stirred and heated and then directly laid on the road surface to be repaired, and movable wheels allow the device to move while heating the asphalt; it also includes a scraper to ensure the asphalt has a suitable thickness on the circulating conveyor belt, avoiding uneven heating, and a scraper to remove residual asphalt from the conveyor belt, maintaining a good level of cleanliness; however, this prior art produces a strong odor when heating the asphalt, and the direct discharge of this odor will pollute the environment, thus affecting the environmental performance of the technical solution. Utility Model Content
[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a microwave heating device for asphalt mixture. A servo motor drives a bevel gear to rotate, which in turn drives a tank and multiple fan blades to rotate via a meshing main bevel gear. The tank agitates the asphalt through centrifugal force, while the fan blades transport hot air from the tank through through-holes to the interior of the insulation shell. The hot air preheats the asphalt in the tank, and multiple activated carbon mesh plates purify the hot air, thus preventing odors from being directly discharged and polluting the environment, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a microwave heating device for asphalt mixture, comprising a housing and a functional component. The housing is equipped with a heating element for heating asphalt, and the asphalt is mixed by a stirring element outside the housing. The functional component utilizes the residual heat of the heating element.
[0006] The functional component includes an insulating shell that is fitted over the outside of the stirring component. The insulating shell is installed on the top of the box. Multiple spaced activated carbon mesh plates are installed inside the top of the insulating shell, and multiple spaced air holes are opened on the outside of the top of the insulating shell. A main bevel gear fitted over the outside of the stirring component is provided inside the bottom of the insulating shell. A driven bevel gear is meshed at the top of one end of the main bevel gear, and multiple fan blades are provided at the top of the driven bevel gear. The multiple fan blades are arranged in a ring array outside the stirring component.
[0007] The top of the box has multiple through holes arranged in a ring array on one side corresponding to the insulation shell.
[0008] In a preferred embodiment, the stirring component includes a tank disposed inside the insulation shell, the bottom end of the tank penetrating the box and being movably connected to the box via a bearing, and the main bevel gear and multiple fan blades are all sleeved on the outside of the bottom end of the tank.
[0009] A servo motor is installed at the top of one end of the housing near the insulation shell, and the output shaft of the servo motor passes through the insulation shell and is fixed together with the bevel gear.
[0010] In a preferred embodiment, the heating element includes a belt conveyor installed inside the housing, the top of which is provided with a plurality of spaced magnetrons, the magnetrons being installed inside the housing;
[0011] A drive motor for driving the belt conveyor is installed on the front side of one end of the housing.
[0012] In a preferred embodiment, a plurality of stirring rods arranged in a ring array are installed on the top of the insulation shell. The stirring rods have an L-shaped cross-section, and the end of the stirring rod away from the insulation shell extends into the interior of the tank.
[0013] In a preferred embodiment, the box body has a discharge port on the side away from the insulation shell, and a feeding plate is installed inside the discharge port. The end of the feeding plate near the box body is in contact with the belt conveyor.
[0014] In a preferred embodiment, the box is equipped with self-locking casters at all four corners of its bottom, and handles are installed on both the front and rear sides of the end of the box closest to the insulation shell.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] A servo motor drives a bevel gear to rotate, which in turn drives the tank and its multiple fan blades to rotate via a meshing main bevel gear. The tank agitates and mixes the asphalt using centrifugal force, while the fan blades transport hot air from the tank through through holes to the interior of the insulation shell. The hot air preheats the asphalt in the tank, and multiple activated carbon mesh plates purify the air in the hot air. This prevents odors from being directly discharged and polluting the environment, thereby improving the practicality and functionality of this invention. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a sectional view of the box body of this utility model;
[0019] Figure 3 For the present utility model Figure 2 Enlarged view of section A in the middle;
[0020] Figure 4 This is a front view of the insulation shell of this utility model;
[0021] Figure 5 This is an exploded view of the feed plate of this utility model.
[0022] The attached diagram is labeled as follows: 1. Box body; 2. Insulation shell; 3. Activated carbon mesh plate; 4. Air hole; 5. Main bevel gear; 6. Driven bevel gear; 7. Fan blade; 8. Through hole; 9. Tank body; 10. Servo motor; 11. Belt conveyor; 12. Magnetron; 13. Drive motor; 14. Stirring rod; 15. Discharge port; 16. Feed plate; 17. Self-locking caster wheel; 18. Handle. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Refer to the instruction manual appendix Figure 1 - Appendix Figure 5This utility model provides a microwave heating device for asphalt mixture, including a housing 1 and a functional component. The housing 1 is equipped with a heating element for heating asphalt, and the asphalt is mixed by a stirring element outside the housing 1. The functional component utilizes the residual heat of the heating element. The functional component includes a heat-insulating shell 2 fitted outside the stirring element. The heat-insulating shell 2 is installed on the top of the housing 1. Multiple spaced activated carbon mesh plates 3 are installed inside the top of the heat-insulating shell 2, and multiple spaced air holes 4 are opened on the outside of the top of the heat-insulating shell 2. A main bevel gear 5 fitted outside the stirring element is provided inside the bottom of the heat-insulating shell 2. A driven bevel gear 6 is meshed at one end of the main bevel gear 5, and multiple fan blades 7 are provided on the top of the driven bevel gear 6. The multiple fan blades 7 are arranged in a ring array outside the stirring element. Multiple through holes 8 arranged in a ring array are opened on one side of the top of the housing 1 corresponding to the heat-insulating shell 2.
[0025] When using the above-mentioned heating element to microwave heat asphalt, it is necessary to transport the dispersed and mixed material into the box 1. Therefore, the asphalt is stirred by a stirring element, which includes a tank 9 located inside the insulation shell 2. The bottom end of the tank 9 passes through the box 1 and is movably connected to the box 1 through a bearing. The main bevel gear 5 and multiple fan blades 7 are all sleeved on the outside of the bottom end of the tank 9. A servo motor 10 is installed on the top of the end of the box 1 near the insulation shell 2, and the output shaft of the servo motor 10 passes through the insulation shell 2 and is fixed together with the driven bevel gear 6.
[0026] The servo motor 10 drives the bevel gear 6 to rotate, and the bevel gear 6 drives the tank 9 to rotate through the meshing main bevel gear 5. In this way, the asphalt can be stirred by the centrifugal force when the tank 9 is rotating. The top of the heat insulation shell 2 is equipped with multiple stirring rods 14 arranged in a ring array. The cross-section of the stirring rod 14 is L-shaped, and the end of the stirring rod 14 away from the heat insulation shell 2 extends into the inside of the tank 9. This allows the asphalt to be dispersed and mixed by repeated contact with the stirring rod 14 when the tank 9 is rotating, thereby avoiding the asphalt from clumping together and affecting the subsequent microwave heating effect.
[0027] While the tank 9 is stirring the asphalt, it also drives multiple fan blades 7 to rotate. When the multiple fan blades 7 are running, some of the hot air in the box 1 is transported to the interior of the insulation shell 2 through the through hole 8. This preheats the asphalt in the tank 9, improving the efficiency and effect of subsequent microwave heating of the asphalt. Because the interior of the insulation shell 2 is equipped with multiple spaced activated carbon mesh plates 3, the activated carbon mesh plates 3 can absorb and treat the odor in the hot air. The purified odor is then discharged through the air hole 4, thus avoiding the direct discharge of odor and environmental pollution.
[0028] In this process, after the asphalt is stirred and mixed, it falls into the heating element inside the box 1 and is subjected to microwave heating treatment. The heating element includes a belt conveyor 11 installed inside the box 1. The top of the belt conveyor 11 is provided with multiple spaced magnetrons 12, which are installed inside the box 1. A drive motor 13 for driving the belt conveyor 11 is installed on the front side of one end of the box 1.
[0029] Thus, the drive motor 13 drives the belt conveyor 11 to operate, and the belt conveyor 11 transports the mixed asphalt to multiple magnetrons 12. The asphalt is microwave heated by the multiple magnetrons 12. Since the box 1 has a discharge port 15 on the side away from the insulation shell 2, and a discharge plate 16 is installed inside the discharge port 15, the end of the discharge plate 16 near the box 1 is in contact with the belt conveyor 11, so that the heated asphalt can be discharged through the discharge plate 16 at the discharge port 15.
[0030] Meanwhile, to improve the ease of operation of this utility model, self-locking casters 17 are installed at the four corners of the bottom of the box 1, and handles 18 are installed on both the front and rear sides of the end of the box 1 near the insulation shell 2. The box 1 supported by the self-locking casters 17 can be moved by operating the handles 18, making it easy to move the box 1 to a suitable position for use, thereby improving the ease of operation of this utility model.
[0031] Finally: 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 microwave heating device for asphalt mixture, comprising a housing (1), characterized in that: It also includes functional components. The box (1) is equipped with a heating element for heating asphalt inside, and the asphalt is mixed by a stirring element outside the box (1). The functional components utilize the residual heat of the heating element. The functional component includes a heat-insulating shell (2) fitted outside the stirring component. The heat-insulating shell (2) is installed on the top of the box body (1). Multiple spaced activated carbon mesh plates (3) are installed inside the top of the heat-insulating shell (2), and multiple spaced air holes (4) are opened on the outside of the top of the heat-insulating shell (2). A main bevel gear (5) fitted outside the stirring component is provided inside the bottom of the heat-insulating shell (2). A secondary bevel gear (6) is meshed at the top of one end of the main bevel gear (5), and multiple fan blades (7) are provided at the top of the secondary bevel gear (6). The multiple fan blades (7) are arranged in a ring array outside the stirring component. The top of the box (1) has multiple through holes (8) arranged in a ring array on one side corresponding to the heat insulation shell (2).
2. The microwave heating device for asphalt mixture according to claim 1, characterized in that: The stirring component includes a tank (9) located inside the insulation shell (2). The bottom end of the tank (9) passes through the box (1) and is movably connected to the box (1) through a bearing. The main bevel gear (5) and multiple fan blades (7) are all sleeved on the outside of the bottom end of the tank (9). A servo motor (10) is installed on the top of one end of the housing (1) near the insulation shell (2), and the output shaft of the servo motor (10) passes through the insulation shell (2) and is fixed together with the bevel gear (6).
3. The microwave heating device for asphalt mixture according to claim 1, characterized in that: The heating element includes a belt conveyor (11) installed inside the housing (1), and the top of the belt conveyor (11) is provided with a plurality of spaced magnetrons (12), which are installed inside the housing (1). A drive motor (13) for driving the belt conveyor (11) is installed on the front side of one end of the housing (1).
4. The microwave heating device for asphalt mixture according to claim 2, characterized in that: The top of the heat insulation shell (2) is equipped with a plurality of stirring rods (14) arranged in a ring array. The cross-section of the stirring rods (14) is L-shaped, and the end of the stirring rods (14) away from the heat insulation shell (2) extends into the interior of the tank (9).
5. The microwave heating device for asphalt mixture according to claim 3, characterized in that: The box (1) has a discharge port (15) on the side away from the insulation shell (2), and a feeding plate (16) is installed inside the discharge port (15). The feeding plate (16) is in contact with the belt conveyor (11) at one end near the box (1).
6. The microwave heating device for asphalt mixture according to claim 1, characterized in that: The box (1) is equipped with self-locking casters (17) at the four corners of the bottom, and handles (18) are installed on both the front and back sides of the end of the box (1) near the insulation shell (2).