Anti-sticking asphalt drying roller structure
By installing a pusher plate, combing assembly, and cleaning assembly inside the asphalt drying drum, the problem of drum sticking is solved, motor life is extended, heating efficiency is improved, and fuel costs are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEZE ZHENHUA MASCH MFG CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
Existing asphalt drying drums suffer from increased motor load, shortened lifespan, reduced heating efficiency, and increased fuel costs due to drum sticking after prolonged use.
Inside the drum are a pusher plate, a combing assembly, and a cleaning assembly. The pusher plate provides initial propulsion, the combing assembly disperses the material, and the cleaning assembly removes adhering asphalt through a chain and guide plate, preventing the chain from tangling and ensuring uniform cleaning.
It effectively prevents asphalt adhesion, reduces motor load, extends motor life, improves heating efficiency, and reduces fuel costs.
Smart Images
Figure CN224494801U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of asphalt drying drum devices, and in particular to a structure for an asphalt drying drum that prevents material from sticking. Background Technology
[0002] The demand for hot recycling of asphalt is increasing, and the heating of recycled asphalt is mainly completed inside the drum.
[0003] For example, the utility model application with application number CN201510434372.X discloses an asphalt recycling drying drum, including a drying drum body. One end of the drying drum body is provided with a feeding smoke box, and the other end is provided with a discharging smoke box. The inner surface of the side wall of the drying drum body is covered with lifting blades, and the outside of the drying drum body is provided with a driving device to drive its rotation. Inside the drying drum body, at the end where the discharging smoke box is located, there is also a stainless steel inner cylinder. The stainless steel inner cylinder and the drying drum body are connected by an elastic connecting bracket. The lower part of the discharging smoke box is provided with a discharging chute, and the center of the discharging smoke box is provided with a flame inlet.
[0004] Currently, the biggest technical challenge is preventing the roller from sticking after heating. Prolonged use increases the weight of the roller, which in turn increases the load on the motor, damages electrical components, greatly reduces the lifespan of the motor, significantly reduces heating efficiency, and substantially increases fuel costs.
[0005] Therefore, this application proposes a structure for an anti-sticking asphalt drying drum. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a structure for an anti-sticking asphalt drying drum, which solves the problems mentioned in the background section.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A structure for an anti-sticking asphalt drying drum includes a drum body. An external insulation layer and an external rolling ring are fixedly installed on the outer wall of the drum body. The drum body is inclined, with a 4° inclination angle between the feed end of the drum body and the horizontal plane. Multiple sets of pusher plates are fixedly installed inside the feed end cavity of the drum body, and the multiple sets of pusher plates are distributed in a spiral pattern with spacing. Multiple sets of combing components for dispersing asphalt material are fixedly installed inside the drum body cavity. The combing components include mounting plates and comb pins. A cleaning component for cleaning the asphalt on the inner wall of the drum body is also fixedly installed inside the drum body cavity. The cleaning component includes guide plates, chains, and fixing flange rings.
[0009] According to the aforementioned anti-sticking asphalt drying drum structure, the external insulation layer includes insulation cotton and stainless steel sheet.
[0010] According to the aforementioned anti-sticking asphalt drying drum structure, there is an inclined angle between the mounting plate and the inner wall of the drum. The mounting plates are all welded and fixed inside the drum cavity. The mounting plates are L-shaped, and a fixing plate is also fixedly installed between the L-shaped cavity of the mounting plate and the inner wall of the drum.
[0011] According to the aforementioned anti-sticking asphalt drying drum structure, the mounting plates are arranged in a ring array inside the drum cavity, and multiple sets of comb pins are fixedly installed on the side of the mounting plates away from the fixing plates.
[0012] According to the aforementioned anti-sticking asphalt drying drum structure, multiple sets of guide plates are welded and fixed in a ring array inside the drum cavity, and multiple sets of chains are sleeved between two sets of guide plates on the same plane.
[0013] According to the aforementioned anti-sticking asphalt drying drum structure, the outer wall of the guide plate is also fitted with multiple sets of spacers, which are staggered with the chains, and the multiple sets of spacers separate the multiple sets of chains on the outer wall of the guide plate.
[0014] According to the aforementioned anti-sticking asphalt drying drum structure, each of the multiple sets of guide plates has a through-hole at the end away from the drum body. Bolts and nuts are provided between the fixing flange ring and the multiple sets of guide plates. The bolts move through the fixing flange ring and the corresponding mounting holes, and the fixing flange ring and the multiple sets of guide plates are fixedly connected by bolts and nuts.
[0015] This utility model provides a structure for an anti-sticking asphalt drying drum. It has the following advantages: By installing a cleaning component inside the drum cavity, the asphalt adhering to the inner wall is removed by the chain's own weight swinging and scraping action during the drum's rotation. Multiple sets of spacers separate the multiple sets of chains on the outer wall of the guide plate, preventing chain tangling and ensuring uniform scraping force. Simultaneously, the multiple sets of chains on the outer wall of the guide plate can slide relative to each other, increasing the chain's range of motion and making cleaning more thorough. Attached Figure Description
[0016] Fig. 1 This is a schematic diagram of the external appearance of an anti-sticking asphalt drying drum structure according to the present invention;
[0017] Fig. 2 This is a schematic diagram showing the connection relationship between the pusher plate and the cylinder body of an anti-sticking asphalt drying drum structure according to this utility model;
[0018] Fig. 3 This is a schematic diagram showing the connection relationship between the comb assembly, guide plate, and cylinder body of an anti-sticking asphalt drying drum structure according to this utility model.
[0019] Fig. 4 This is a three-dimensional structural diagram of the comb assembly of an anti-sticking asphalt drying drum structure according to the present invention;
[0020] Fig. 5This is a three-dimensional structural diagram of a cleaning component for an anti-sticking asphalt drying drum structure according to the present invention;
[0021] Fig. 6 This is a schematic diagram showing the connection relationship between the guide plate and the fixed flange ring of the anti-sticking asphalt drying drum structure of this utility model.
[0022] Legend:
[0023] 10. Cylinder body; 11. External insulation layer; 12. External rolling ring; 13. Pusher plate; 14. Comb assembly; 15. Mounting plate; 16. Fixing plate; 17. Comb nail; 18. Guide plate; 19. Chain; 20. Spacer; 21. Mounting hole; 22. Fixing flange ring. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] Please see Figs. 1-6 As shown, this utility model is a structure for an anti-sticking asphalt drying drum, including a drum body 10. An external insulation layer 11 and an external rolling ring 12 are fixedly installed on the outer wall of the drum body 10. The external insulation layer 11 includes insulation cotton and stainless steel sheet. Its function is to isolate the internal heat of the drum body 10, reduce heat loss during the drying process, and protect the drum body 10 from the influence of the external environment. The drum body 10 is in an inclined state, with a 4° inclination angle between the feed end of the drum body 10 and the horizontal plane. This facilitates the material to flow naturally to the discharge end under the action of gravity, reducing the risk of accumulation at the feed end.
[0026] like Figs. 1-2 As shown, multiple sets of pusher plates 13 are fixedly installed inside the feed end cavity of the cylinder 10. The multiple sets of pusher plates 13 are distributed in a spiral shape with intervals. Their function is to provide initial propulsion force when the material enters the cylinder 10 and guide the material to move quickly towards the central area of the cylinder 10.
[0027] like Figs. 3-4 As shown, multiple sets of combing components 14 for dispersing asphalt materials are fixedly installed inside the cylinder 10 cavity. These components dynamically disperse the asphalt materials. Each combing component 14 includes a mounting plate 15 and comb pins 17. The mounting plate 15 has an inclined angle with the inner wall of the cylinder 10. This angle design facilitates the comb pins 17 penetrating deep into the material layer. The mounting plates 15 are all welded and fixed inside the cylinder 10 cavity. The mounting plates 15 are L-shaped, and a fixing plate 16 is also fixedly installed between the L-shaped cavity of the mounting plate 15 and the inner wall of the cylinder 10 to reinforce the structure of the mounting plate 15 and distribute stress. The mounting plates 15 are arranged in a ring array inside the cylinder 10 cavity. Multiple sets of comb pins 17 are fixedly installed on the side of the mounting plate 15 away from the fixing plate 16, serving to disperse and lift the material. The lifted recycled material can better exchange heat with the hot gas emitted from the burner.
[0028] like Figs. 5-6 As shown, a cleaning assembly for cleaning the asphalt on the inner wall of the cylinder 10 is also fixedly installed inside the cylinder 10 cavity. It is specifically used to clean the asphalt residue on the inner wall of the cylinder 10. The cleaning assembly includes guide plates 18, chains 19 and fixing flange rings 22. Multiple sets of guide plates 18 are welded and fixed in a ring array inside the cylinder 10 cavity to provide a support base. Multiple sets of chains 19 are sleeved between two sets of guide plates 18 on the same plane. Their function is to remove the asphalt adhering to the inner wall through swinging and scraping actions when the cylinder 10 rotates. Multiple sets of spacers 20 are also sleeved on the outer wall of the guide plates 18. The multiple sets of spacers 20 and chains 19 are staggered. The multiple sets of spacers 20 separate the multiple sets of chains 19 on the outer wall of the guide plates 18 to prevent the chains 19 from tangling and ensure uniform scraping force. Each of the multiple guide plates 18 has a mounting hole 21 through it at the end away from the cylinder 10. A bolt and nut are provided between the fixing flange ring 22 and the multiple guide plates 18. The bolt moves through the fixing flange ring 22 and the corresponding mounting hole 21. The fixing flange ring 22 and the multiple guide plates 18 are fixedly connected by bolts and nuts to ensure that the entire cleaning assembly is stable and reliable during high-speed rotation.
[0029] The implementation principle of this utility model's anti-sticking asphalt drying drum structure is as follows:
[0030] First, the asphalt enters the 4° inclined cylinder 10 from the feed end and slides naturally towards the discharge end under the action of gravity. The spiral distribution of the pusher plate 13 can provide propulsion for the asphalt material. The insulation cotton and stainless steel sheet of the external insulation layer 11 maintain the temperature stability of the cylinder 10 during this stage, reduce heat loss, and avoid local solidification and adhesion of the material due to temperature fluctuations.
[0031] Secondly, by setting up the comb assembly 14, multiple sets of comb nails 17 are installed on one side of the mounting plate 15. The comb nails 17 penetrate deep into the material layer and break up the asphalt clumps through the actions of piercing and combing, and lift the asphalt. The lifted recycled material can better exchange heat with the hot air sprayed from the burner.
[0032] Finally, as the temperature increases, the recycled material begins to have a certain viscosity. By setting up guide plates 18 and chains 19, multiple sets of chains 19 swing freely as the cylinder 10 rotates. The movable chains 19 can clean the asphalt material adhering to the inner wall of the cylinder 10. Spacers 20 are set up and distributed alternately with chains 19 to prevent the chains 19 from getting tangled. Fixed flange rings 22 are set up and fastened to guide plates 18 by bolts and nuts passing through mounting holes 21 to maintain the stability of the component under high-speed rotation.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A structure for an anti-sticking asphalt drying drum, comprising a drum body (10), characterized in that: The outer wall of the cylinder (10) is fixedly installed with an external insulation layer (11) and an external rolling ring (12). The cylinder (10) is in an inclined state, and there is a 4° inclination angle between the feed end of the cylinder (10) and the horizontal plane. Multiple sets of pusher plates (13) are fixedly installed in the feed end cavity of the cylinder (10), and the multiple sets of pusher plates (13) are distributed in a spiral shape with intervals. The cylinder (10) has multiple sets of combing components (14) for dispersing asphalt materials, and the combing components (14) include a mounting plate (15) and comb pins (17). The cavity of the cylinder (10) is also fixedly installed with a cleaning component for cleaning the asphalt on the inner wall of the cylinder (10). The cleaning component includes a guide plate (18), a chain (19) and a fixed flange ring (22).
2. The anti-sticking asphalt drying drum structure according to claim 1, characterized in that: The external insulation layer (11) includes insulation cotton and stainless steel sheet.
3. The anti-sticking asphalt drying drum structure according to claim 1, characterized in that: There is an inclined angle between the mounting plate (15) and the inner wall of the cylinder (10). The mounting plates (15) are all welded and fixed inside the cavity of the cylinder (10). The mounting plates (15) are L-shaped. A fixing plate (16) is also fixedly installed between the L-shaped cavity of the mounting plate (15) and the inner wall of the cylinder (10).
4. The anti-sticking asphalt drying drum structure according to claim 1, characterized in that: The mounting plate (15) is arranged in a ring array inside the cavity of the cylinder (10), and multiple sets of comb pins (17) are fixedly installed on the side of the mounting plate (15) away from the fixing plate (16).
5. The anti-sticking asphalt drying drum structure according to claim 4, characterized in that: Multiple sets of guide plates (18) are welded and fixed in a ring array inside the cavity of the cylinder (10), and multiple sets of chains (19) are sleeved between two sets of guide plates (18) on the same plane.
6. The anti-sticking asphalt drying drum structure according to claim 1, characterized in that: The outer wall of the guide plate (18) is also fitted with multiple sets of spacers (20), which are staggered with the chains (19). The multiple sets of spacers (20) separate the multiple sets of chains (19) on the outer wall of the guide plate (18).
7. The anti-sticking asphalt drying drum structure according to claim 6, characterized in that: Each of the multiple sets of guide plates (18) has a mounting hole (21) through it at the end away from the cylinder (10). A bolt and nut are provided between the fixing flange ring (22) and the multiple sets of guide plates (18). The bolt moves through the fixing flange ring (22) and the corresponding mounting hole (21). The fixing flange ring (22) and the multiple sets of guide plates (18) are fixedly connected by bolts and nuts.