An outdoor asphalt heating device

By installing heating pipes and insulation components inside the heating tank, combined with rotating stirring blades and height adjustment components, the problems of uneven heating and heat loss of outdoor asphalt are solved, achieving uniform heating and temperature retention.

CN224494088UActive Publication Date: 2026-07-14ZHONGSHAN SHUNLITONG ASPHALT ROAD MACHINERY CONSTRUCTION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN SHUNLITONG ASPHALT ROAD MACHINERY CONSTRUCTION CO LTD
Filing Date
2025-06-04
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional outdoor asphalt heating methods result in uneven heating and a lack of insulation, leading to a significant temperature difference between the inner and outer layers.

Method used

The design incorporates heating tubes and insulation components within the heating tank, combined with rotating stirring blades. A drive motor powers the rotating shaft and stirring blades for stirring, and a height adjustment component regulates the stirring speed. A vacuum insulation chamber provides insulation.

Benefits of technology

It achieves uniform asphalt heating and effective temperature retention, reduces the temperature difference between inner and outer layers, and adapts to the needs of asphalt with different particle sizes.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224494088U_ABST
    Figure CN224494088U_ABST
Patent Text Reader

Abstract

The utility model discloses an outdoor pitch heating device, including heating bucket, be provided with inside cover in heating bucket, be provided with heating pipe in inside cover, be provided with heat preservation subassembly on heating bucket, the top fixed mounting of heating bucket has drive motor, and the output of drive motor is connected with driving link, and driving link is rotatably installed with the rotating shaft on, and the end fixed mounting of rotating shaft has a plurality of stirring vane, this outdoor pitch heating device can heat pitch evenly, and the heat preservation subassembly that sets up can avoid the problem that the temperature of heating loses fast, causes the problem of big temperature difference, and the rotary drive assembly that sets up, and drive motor moves in the process of rotating and drives rotating shaft, and the meshing of cooperation gear wheel and annular gear tooth can realize the rotation operation of rotating shaft, and the pitch in the inside can be agitated after stirring vane rotates, and the position of pitch can be changed through agitation, avoids the pitch temperature of inside and outside in the heating process, and the difference is big.
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Description

Technical Field

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

[0002] Asphalt is a dark brown, complex mixture composed of hydrocarbons of varying molecular weights and their non-metallic derivatives. It is a high-viscosity organic liquid, often existing in liquid or semi-solid petroleum form, with a black surface, and is soluble in carbon disulfide and carbon tetrachloride. Asphalt is a waterproof, moisture-proof, and corrosion-resistant organic binder. During use, asphalt needs to be kept at a certain temperature and within a certain range to maintain its softness for easy application.

[0003] During outdoor construction, asphalt needs to be heated to maintain its temperature. However, traditional heating methods are not conducive to stirring the asphalt, resulting in uneven heating. Furthermore, the lack of insulation after heating leads to a significant temperature difference between the outer and inner layers of asphalt. Therefore, an outdoor asphalt heating device is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an outdoor asphalt heating device to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An outdoor asphalt heating device includes a heating tank with an inner cover inside, a heating tube inside the inner cover, a heat insulation component on the heating tank, a drive motor fixedly mounted on the top of the heating tank, a drive rod connected to the output end of the drive motor, a rotating shaft rotatably mounted on the drive rod, multiple stirring blades fixedly mounted on the end of the rotating shaft, an adjusting column mounted on the top of the rotating shaft via a height adjustment component, and a rotation drive component between the adjusting column and the heating tank.

[0007] Preferably, the heat preservation component includes a heat preservation cavity formed on the heating barrel, and the heat preservation cavity is a vacuum cavity.

[0008] Preferably, the height adjustment component includes an adjustment groove formed on the top of the rotating shaft, and one end of the adjustment column extends into the adjustment groove.

[0009] Preferably, the adjusting column has two positioning screw holes, the rotating shaft is provided with a positioning bolt, one end of the positioning bolt is threaded into one of the positioning screw holes, the inner wall of the adjusting groove is provided with a limit groove, and a limit block is fixedly installed on the outer side of the adjusting column, and the limit block is slidably installed in the limit groove.

[0010] Preferably, the rotation drive assembly includes a large gear and a small gear fixedly mounted on the adjusting column, with the large gear positioned above the small gear.

[0011] Preferably, the top of the heating barrel is fixedly equipped with a large annular tooth and a small annular tooth, the large annular tooth meshing with a large gear, and the small annular tooth being adapted to a small gear.

[0012] Preferably, the heating tank has an inlet on one side.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the outdoor asphalt heating device has a heating tube located in the middle of the heating tank, which can heat the asphalt evenly. The heat preservation component can prevent the rapid loss of temperature after heating, thus avoiding a large temperature difference. The rotation drive component drives the motor to move the rotating shaft during rotation. With the meshing of the large gear and the ring gear, the rotating shaft can be rotated. After the stirring blade rotates, it can agitate the asphalt inside. By agitating, the position of the asphalt can be changed, thus avoiding a large temperature difference between the inside and outside of the asphalt during the heating process.

[0014] The height adjustment component allows for the selection of either a large or small gear based on the size of the asphalt particles. When the small gear meshes with the ring-shaped small gear, the mixing blade rotates at a high speed, enabling the mixing speed to be adjusted according to the asphalt usage requirements. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0018] Figure 4 This utility model Figure 2 A schematic diagram of the structure of part A.

[0019] In the diagram: 1. Heating tank; 2. Inner cover; 3. Heating tube; 4. Insulation chamber; 5. Adding port; 6. Drive motor; 7. Drive rod; 8. Rotating shaft; 9. Stirring blade; 10. Adjustment groove; 11. Adjustment column; 12. Limiting groove; 13. Limiting block; 14. Positioning screw hole; 15. Positioning bolt; 16. Large gear; 17. Small gear; 18. Annular large gear; 19. Annular small gear. Detailed Implementation

[0020] 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.

[0021] Example: Refer to Figure 1-4 An outdoor asphalt heating device includes a heating tank 1, an inner cover 2 inside the heating tank 1, a heating tube 3 inside the inner cover 2, a temperature control device inside the heating tube 3 to achieve temperature control, and maintain the heating temperature at about 120 degrees Celsius. The asphalt is heated inside the heating tank 1. The heating tank 1 is equipped with a heat preservation component. A drive motor 6 is fixedly installed on the top of the heating tank 1. The output end of the drive motor 6 is connected to a drive rod 7. A rotating shaft 8 is rotatably installed on the drive rod 7. Multiple stirring blades 9 are fixedly installed at the end of the rotating shaft 8. An adjusting column 11 is installed at the top of the rotating shaft 8 through a height adjustment component. A rotation drive component is provided between the adjusting column 11 and the heating tank 1. An addition port 5 is provided on one side of the heating tank 1.

[0022] Specifically, the rotary drive assembly includes a large gear 16 and a small gear 17 fixedly mounted on the adjusting column 11. The large gear 16 is located above the small gear 17. A large annular tooth 18 and a small annular tooth 19 are fixedly mounted on the top of the heating tank 1. The large annular tooth 18 meshes with the large gear 16, and the small annular tooth 19 is matched with the small gear 17. During the heating process, the drive motor 6 is started, and the drive rod 7 will rotate, thereby driving the rotating shaft 8 to move circumferentially. When the rotating shaft 8 moves, it will drive the large gear 16 on the rotary drive assembly to move. During the movement of the large gear 16, it will mesh with the large annular tooth 18 and rotate. After the rotating shaft 8 rotates, it will drive multiple stirring blades 9 to rotate. During the rotation and movement, the asphalt inside can be stirred. By stirring, the position of the asphalt can be changed, so as to avoid a large temperature difference between the inside and outside of the asphalt during the heating process.

[0023] Specifically, the insulation component includes an insulation cavity 4 opened on the heating barrel 1. The insulation cavity 4 is a vacuum cavity. The insulation cavity 4 is set on the heating barrel 1. The insulation cavity 4 can achieve effective insulation operation and avoid the problem of the outermost asphalt temperature dissipating too quickly and causing a large temperature difference.

[0024] Specifically, the height adjustment assembly includes an adjustment groove 10 on the top of the rotating shaft 8, one end of an adjustment column 11 extending into the adjustment groove 10, two positioning screw holes 14 on the adjustment column 11, a positioning bolt 15 on the rotating shaft 8, one end of the positioning bolt 15 threaded into one of the positioning screw holes 14, a limit groove 12 on the inner wall of the adjustment groove 10, and a limit block 13 fixedly installed on the outer side of the adjustment column 11, the limit block 13 slidingly installed in the limit groove 12. During the asphalt heating process, it is necessary to adjust the stirring speed of the mixing blade 9. At this time, the equipment is stopped, the operator loosens the positioning bolt 15, and then moves the adjustment column 11 upwards. Then, the small gear 17 is moved upward. By adjusting its position, the small gear 17 meshes with the annular small gear 19. Then, one end of the positioning bolt 15 is threaded into another positioning screw hole 14 to fix the adjusted position. The small gear 17 has a small circumference, which allows the mixing blade 9 to rotate quickly when it rotates. When the large gear 16 meshes with the annular large gear 18, the rotation speed is slow. The large gear 16 meshes with the tooth groove of the annular large gear 18, and the small gear 17 meshes with the tooth groove of the annular small gear 19. By adjusting, the mixing speed can be adjusted according to the use requirements of asphalt. When the asphalt particles are large, the mixing speed needs to be reduced, and vice versa.

[0025] In use: When using asphalt outdoors, starting the heating pipe 3 heats the placed asphalt. During the heating process, starting the drive motor 6 causes the rod 7 to rotate, which in turn drives the rotating shaft 8 to move circumferentially. When the rotating shaft 8 moves, the large gear 16 meshes with the ring gear 18, causing the large gear 16 to rotate. After the rotating shaft 8 rotates, it drives multiple stirring blades 9 to rotate. During the rotation and movement, the asphalt inside can be stirred. By stirring, the position of the asphalt can be changed, avoiding a large temperature difference between the inner and outer asphalt during the heating process. The heating tank 1 is equipped with a heat preservation chamber 4, which can effectively preserve the heat and prevent the outermost asphalt from losing heat too quickly, causing a large temperature difference. During the heating of asphalt, it is necessary to adjust the stirring speed of the stirring blades 9. Moving the adjusting column 11 upwards adjusts the small gear 17 to mesh with the ring gear 19. The small circumference of the small gear 17 is small, which allows the stirring blades 9 to rotate quickly during rotation and movement. The stirring speed can be adjusted according to the usage requirements of the asphalt.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outdoor asphalt heating device, comprising a heating tank (1), characterized in that, The heating barrel (1) is provided with an inner cover (2), and a heating tube (3) is provided inside the inner cover (2). A heat preservation component is provided on the heating barrel (1). A drive motor (6) is fixedly installed on the top of the heating barrel (1). A drive rod (7) is connected to the output end of the drive motor (6). A rotating shaft (8) is rotatably installed on the drive rod (7). Multiple stirring blades (9) are fixedly installed at the end of the rotating shaft (8). An adjusting column (11) is installed at the top of the rotating shaft (8) through a height adjustment component. A rotation drive component is provided between the adjusting column (11) and the heating barrel (1).

2. The outdoor asphalt heating device according to claim 1, characterized in that, The heat preservation component includes a heat preservation cavity (4) opened on the heating barrel (1), and the heat preservation cavity (4) is a vacuum cavity.

3. The outdoor asphalt heating device according to claim 1, characterized in that, The height adjustment assembly includes an adjustment groove (10) opened on the top of the rotating shaft (8), and one end of the adjustment column (11) extends into the adjustment groove (10).

4. An outdoor asphalt heating device according to claim 3, characterized in that, The adjusting column (11) has two positioning screw holes (14), and the rotating shaft (8) is provided with a positioning bolt (15). One end of the positioning bolt (15) is threaded into a positioning screw hole (14). A limit groove (12) is provided on the inner wall of the adjusting groove (10). A limit block (13) is fixedly installed on the outer side of the adjusting column (11), and the limit block (13) is slidably installed in the limit groove (12).

5. An outdoor asphalt heating device according to claim 1, characterized in that, The rotation drive assembly includes a large gear (16) and a small gear (17) fixedly mounted on the adjusting column (11), with the large gear (16) located above the small gear (17).

6. An outdoor asphalt heating device according to claim 5, characterized in that, The top of the heating barrel (1) is fixedly equipped with a large annular tooth (18) and a small annular tooth (19). The large annular tooth (18) meshes with the large gear (16), and the small annular tooth (19) is adapted to the small gear (17).

7. An outdoor asphalt heating device according to claim 1, characterized in that, The heating tank (1) has an addition port (5) on one side.