Drying machine for asphalt concrete products
By designing an asphalt concrete dryer including a conveying mechanism and a drying mechanism, the problem of uneven material drying in the prior art is solved, uniform heating and drying of materials is achieved, and drying effect and efficiency are improved.
Patent Information
- Application Number
- CN202421838557.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the drying process, the existing asphalt concrete dryers have insufficient airflow penetration and cannot achieve uniform heating, which is prone to uneven drying of materials.
An asphalt concrete dryer including a drying cylinder, a conveying mechanism, a guide structure and a drying mechanism is designed. The material is transported to the material guide structure through the conveying mechanism, and the drying mechanism is used to transport hot gas to the material guide structure and the discharge plate, so as to achieve full mixing of hot gas and materials, and improve drying efficiency and effect.
Through this design, uniform heating and drying of materials is achieved, the problem of uneven drying is avoided, and the drying effect and efficiency are improved.
Smart Images
Figure CN222849719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of asphalt concrete production, in particular to a drying machine for asphalt concrete products. Background Art
[0002] Asphalt concrete dryer is a kind of equipment used to heat and dry asphalt concrete materials, usually used in the production process of asphalt concrete. Its main function is to remove moisture from the mixture, ensure a good combination between asphalt and aggregate, and thus improve the strength and durability of concrete.
[0003] The drying process of asphalt concrete is mainly to remove moisture from the mixture to ensure a good combination between asphalt and aggregate. The following are the specific steps and methods for drying asphalt concrete:
[0004] 1. Preparation
[0005] Before drying, you first need to prepare the raw materials of asphalt concrete, including aggregates (such as sand, gravel) and asphalt. Make sure the quality of the aggregates meets the standards and mix them according to the ratio requirements.
[0006] 2. Heating
[0007] The core of drying is heating, which is usually done in the following ways:
[0008] Drum Dryer: Aggregates are fed into a rotating drum, which is heated internally and hot air is passed through the aggregates, evaporating the moisture. The rotation of the drum causes the aggregates to be constantly turned, ensuring even heating.
[0009] Hot air dryer: Hot air is sent into the drying chamber through the hot air circulation system, where the air comes into contact with the aggregate and takes away moisture.
[0010] Based on the above drying technology, it can be known that the following technical defects exist: during drying, the dried materials are piled together, resulting in small gaps between the materials. The rotating materials and airflow heating methods cannot achieve sufficient penetration of the airflow and contact with the materials, which easily leads to uneven drying of the materials. Utility Model Content
[0011] In view of the deficiencies in the prior art, the utility model provides a drying machine for asphalt concrete products, which has the advantages of improving drying effect and efficiency.
[0012] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drying machine for asphalt concrete products, comprising a drying cylinder, a discharge cover, a feed hopper and an exhaust cylinder;
[0013] A discharge cover is fixedly mounted at the bottom discharge port of the drying cylinder by fastening screws, a feed hopper is connected to the right side of the drying cylinder, and an exhaust cylinder is connected to the top of the drying cylinder;
[0014] The drying cylinder is provided with a conveying mechanism for conveying the material in the drying cylinder from the bottom to the top of the drying cylinder;
[0015] The drying cylinder is provided with a material guide structure for guiding the material conveyed by the conveying mechanism out;
[0016] The drying cylinder is provided with a discharge plate for discharging the material on the material guide structure in a step-by-step manner;
[0017] The drying cylinder is provided with a drying mechanism which is connected with the conveying mechanism, the material guiding structure and the material discharging plate and discharges hot air.
[0018] As a preferred technical solution of the utility model, the conveying mechanism includes a conveying cylinder installed and fixed on the left side of the drying cylinder, a discharge port connected to each other is opened between the top of the right side of the conveying cylinder and the drying cylinder, and a loading port connected to each other is opened between the bottom of the right side of the conveying cylinder and the drying cylinder;
[0019] A driving motor is fixedly mounted on the bottom of the conveying cylinder, and a spiral conveying rod rotatably connected to the top wall of the inner cavity of the conveying cylinder is fixedly mounted on the output shaft of the driving motor.
[0020] As a preferred technical solution of the utility model, the material guiding structure includes two mounting seats installed and fixed on the left side wall of the inner cavity of the drying cylinder, which are respectively located below the front and rear sides of the discharge port, and a number of conveying rollers distributed at equal distances laterally are rotatably connected between the mounting seats. A baffle fixed to the left side wall and top wall of the drying cylinder is installed on the top of the mounting seat, and the front surface of the conveying roller is rotatably connected to a rotating tube.
[0021] As a preferred technical solution of the utility model, the discharge plates are installed and fixed on the inner wall of the drying cylinder in a left-right symmetrical cross distribution, the discharge plates are tilted downward at an angle of thirty degrees, and the discharge plates are located below the mounting seat.
[0022] As a preferred technical solution of the utility model, the drying mechanism includes a cavity opened inside the drying cylinder and connected to the discharge plate, a straight pipe connected to the front surface of the rotating tube and connected to the cavity, and a heating seat installed and fixed on the top of the drying cylinder;
[0023] Among them, the outside of the conveying roller is provided with a number of air holes 1 distributed in a circular shape and at equal distances, and a number of air holes 2 are opened on the top of the discharge plate and distributed in a horizontal direction and at equal distances. The left side of the heating seat is connected to a blower, and the right side of the heating seat is connected to the straight pipe by a connecting pipe.
[0024] As a preferred technical solution of the utility model, the inner cavity cross-section of the drying cylinder is rectangular, and the width of the discharge plate is equal to the inner cavity width of the drying cylinder.
[0025] As a preferred technical solution of the utility model, a transparent glass strip is embedded, installed and fixed on the front surface of the drying cylinder.
[0026] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:
[0027] The dryer for asphalt concrete products feeds the mixture into the drying cylinder through the feed hopper, and at the same time, conveys the material to the material guide structure through the provided conveying mechanism for guiding the material to the discharge plate for step-by-step unloading. At the same time, the drying mechanism is used to convey hot air into the material guide structure and the discharge plate, so that the hot air is fully mixed with the material, thereby improving the drying efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a three-dimensional diagram of the utility model;
[0029] Figure 2 It is a cross-sectional view of the utility model;
[0030] Figure 3 It is a partial stereogram of the utility model;
[0031] Figure 4 It is an enlarged view of point A of the utility model;
[0032] Figure 5 It is a three-dimensional diagram of the discharge plate of the utility model.
[0033] In the figure: 1. Drying cylinder; 2. Discharge cover; 3. Feed hopper; 4. Transparent glass strip; 5. Conveying cylinder; 6. Driving motor; 7. Screw conveying rod; 8. Loading port; 9. Discharge port; 10. Mounting seat; 11. Conveying roller; 12. Baffle; 13. Exhaust pipe; 14. Air hole 1; 15. Rotating pipe; 16. Discharge plate; 17. Air hole 2; 18. Cavity; 19. Straight pipe; 20. Heating seat; 21. Blower; 22. Connecting pipe. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] See also Figures 1 to 5A dryer for asphalt concrete products in this embodiment includes a drying cylinder 1, a discharge cover 2, a feed hopper 3 and an exhaust pipe 13.
[0036] The bottom of the drying cylinder 1 is provided with a plurality of supporting feet which are equidistantly distributed in a circular shape, so as to ensure the stable placement of the equipment.
[0037] A control cabinet is fixedly mounted on the surface of the drying cylinder 1 for controlling and powering the equipment.
[0038] In this embodiment, a discharge cover 2 is fixedly mounted at the bottom discharge port of the drying cylinder 1 by means of fastening screws, a feed hopper 3 is connected to the right side of the drying cylinder 1 , and an exhaust pipe 13 is connected to the top of the drying cylinder 1 .
[0039] The exhaust pipe 13 is used to discharge the moist hot air flow generated by heating and drying.
[0040] The dried material can be discharged and used by opening the discharge cover 2.
[0041] The drying cylinder 1 in this embodiment is provided with a conveying mechanism for conveying the material in the drying cylinder 1 from the bottom to the top of the drying cylinder 1 .
[0042] It should be noted that the conveying mechanism includes a conveying cylinder 5 installed and fixed on the left side of the drying cylinder 1, a discharge port 9 connected to each other is opened between the right top of the conveying cylinder 5 and the drying cylinder 1, and a loading port 8 connected to each other is opened between the right bottom of the conveying cylinder 5 and the drying cylinder 1.
[0043] The top of the discharge cover 2 is tilted at a 45 degree angle from right to left to facilitate the discharge of stored materials into the loading port 8.
[0044] A driving motor 6 is fixedly mounted on the bottom of the conveying cylinder 5 , and a spiral conveying rod 7 rotatably connected to the top wall of the inner cavity of the conveying cylinder 5 is fixedly mounted on the output shaft of the driving motor 6 .
[0045] In the present embodiment, a material guiding structure for guiding the material conveyed by the conveying mechanism is provided in the drying cylinder 1 .
[0046] A discharge plate 16 is provided in the drying cylinder 1 for discharging the material on the material guide structure in a step-by-step manner.
[0047] The material guiding structure includes two mounting seats 10 installed and fixed on the left side wall of the inner cavity of the drying cylinder 1, respectively located below the front and rear sides of the discharge port 9, a number of conveying rollers 11 rotatably connected between the mounting seats 10 and distributed at equal distances laterally, a baffle 12 fixed to the left side wall and top wall of the drying cylinder 1 is installed and fixed on the top of the mounting seat 10, and the front surface of the conveying roller 11 is rotatably connected to a rotating tube 15.
[0048] The discharge plates 16 are symmetrically and cross-distributed and fixed to the inner wall of the drying cylinder 1 . The discharge plates 16 are tilted downward at an angle of thirty degrees to facilitate the materials falling on the discharge plates 16 and rolling down the inclined surface. The discharge plates 16 are located below the mounting seat 10 .
[0049] In this embodiment, the drying cylinder 1 is provided with a drying mechanism which is connected with the conveying mechanism, the material guiding structure and the discharge plate 16 to discharge hot air.
[0050] It should be noted that the drying mechanism includes a cavity 18 opened inside the drying cylinder 1 and connected to the discharge plate 16, a straight pipe 19 connected to the front surface of the rotating tube 15 and connected to the cavity 18, and a heating seat 20 installed and fixed on the top of the drying cylinder 1.
[0051] Among them, the outside of the conveying roller 11 is provided with a number of air holes 14 distributed in a circular shape and at equal distances, and a number of air holes 17 are provided on the top of the discharge plate 16 and distributed in a horizontal direction and at equal distances. The left side of the heating seat 20 is connected to a blower 21, and the right side of the heating seat 20 is connected to the straight pipe 19 by a connecting pipe 22.
[0052] The inner cavity cross section of the drying cylinder 1 is rectangular, and the width of the discharge plate 16 is equal to the inner cavity width of the drying cylinder 1 to prevent the material from falling from the side.
[0053] A transparent glass strip 23 is embedded and fixed on the front surface of the drying cylinder 1 .
[0054] The transparent setting of the transparent glass strip 23 makes it easy to observe the material storage situation inside the drying cylinder 1 through the transparent glass strip 23 when feeding materials into the drying cylinder 1 through the feed hopper 3, so as to avoid the stored materials being higher than the discharge plate 16.
[0055] The gap between the conveying rollers 11, the apertures of the air hole 14 and the air hole 2 17 are all set to be smaller than the minimum width or diameter of the material.
[0056] The working principle of the above embodiment is:
[0057] While the mixed material is fed into the drying cylinder 1 through the feed hopper 3, the material in the drying cylinder 1 enters the conveying cylinder 5 through the feeding port 8, thereby cooperating with the driving motor 6 set to start working to drive the screw conveying rod 7 to rotate, so that the entered material is spirally conveyed to the top of the conveying cylinder 5 and discharged from the discharge port 9 to the conveying roller 11;
[0058] At the same time, with the uninterrupted feeding of the material, the conveying roller 11 can be rotated to convey the material to the discharge plate 16, and then the left and right alternate tilting arrangement of the plurality of discharge plates 16 can be used to discharge the material on the discharge plate 16 in a step-by-step manner;
[0059] In addition, during the material conveying process, the blower 21 is used to discharge the airflow into the heating seat 20 to heat the airflow. At the same time, the heating seat 20, the connecting pipe 22, the straight pipe 19, the rotating pipe 15, the conveying roller 11, the air hole 14, the cavity 18, the discharge plate 16 and the air hole 2 17 are interconnected, so that the hot airflow is discharged from the air hole 14 and the air hole 2 17 to fully heat the material rolling on the conveying roller 11. The material is discharged into the discharge plate 16 in a stepped manner to further mix with the hot airflow, ensuring that the material in the drying cylinder 1 is continuously loaded, unloaded and dried, avoiding the accumulation of materials being dried at one time and failing to achieve a good mixing and drying effect.
[0060] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.
Claims
1. A dryer for asphalt concrete products, comprising a drying cylinder (1), a discharge cover (2), a feed hopper (3) and an exhaust pipe (13); A discharge cover (2) is fixedly mounted at the bottom discharge port of the drying cylinder (1) by means of fastening screws, a feed hopper (3) is connected to the right side of the drying cylinder (1), and an exhaust pipe (13) is connected to the top of the drying cylinder (1); Features: The drying cylinder (1) is provided with a conveying mechanism for conveying the material in the drying cylinder (1) from the bottom to the top of the drying cylinder (1); The drying cylinder (1) is provided with a material guide structure for guiding the material conveyed by the conveying mechanism out; The drying cylinder (1) is provided with a discharge plate (16) for discharging materials on the material guide structure in a step-by-step manner; The drying cylinder (1) is provided with a drying mechanism which is connected with the conveying mechanism, the material guiding structure and the material discharge plate (16) to discharge hot air.
2. The dryer for asphalt concrete products according to claim 1, characterized in that: The conveying mechanism comprises a conveying cylinder (5) installed and fixed on the left side of the drying cylinder (1); a discharge port (9) communicating with each other is provided between the top of the right side of the conveying cylinder (5) and the drying cylinder (1); and a loading port (8) communicating with each other is provided between the bottom of the right side of the conveying cylinder (5) and the drying cylinder (1); A driving motor (6) is fixedly mounted on the bottom of the conveying cylinder (5), and a spiral conveying rod (7) rotatably connected to the top wall of the inner cavity of the conveying cylinder (5) is fixedly mounted on the output shaft of the driving motor (6).
3. The dryer for asphalt concrete products according to claim 2, characterized in that: The material guiding structure comprises two mounting seats (10) fixedly mounted on the left side wall of the inner cavity of the drying cylinder (1) and respectively located below the front and rear sides of the discharge port (9); a plurality of conveying rollers (11) equidistantly distributed laterally are rotatably connected between the mounting seats (10); a baffle (12) fixedly mounted on the left side wall and the top wall of the drying cylinder (1) is fixedly mounted on the top of the mounting seats (10); and a rotating tube (15) is rotatably connected to the front surface of the conveying roller (11).
4. The dryer for asphalt concrete products according to claim 3, characterized in that: The discharge plates (16) are symmetrically and cross-distributed and fixed on the inner wall of the drying cylinder (1). The discharge plates (16) are tilted downward at an angle of thirty degrees. The discharge plates (16) are located below the mounting seat (10).
5. The dryer for asphalt concrete products according to claim 4, characterized in that: The drying mechanism comprises a cavity (18) opened inside the drying cylinder (1) and connected to the discharge plate (16), a straight pipe (19) connected between the front surface of the rotating tube (15) and connected to the cavity (18), and a heating seat (20) fixedly mounted on the top of the drying cylinder (1); The outside of the conveying roller (11) is provided with a plurality of air holes (14) distributed in an annular shape and at equal distances, and a plurality of air holes (17) are provided on the top of the discharge plate (16) and distributed in a transverse direction and at equal distances. The left side of the heating seat (20) is connected to a blower (21), and the right side of the heating seat (20) is connected to the straight pipe (19) via a connecting pipe (22).
6. The dryer for asphalt concrete products according to claim 1, characterized in that: The inner cavity cross section of the drying cylinder (1) is rectangular, and the width of the discharge plate (16) is equal to the inner cavity width of the drying cylinder (1).
7. The dryer for asphalt concrete products according to claim 1, characterized in that: A transparent glass strip (23) is embedded and fixed on the front surface of the drying cylinder (1).