SBS modified asphalt concrete mixing device
Patent Information
- Application Number
- CN202522175025.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-10-15
AI Technical Summary
[0003]然而，现有搅拌装置多采用单一搅拌结构，如直筒式搅拌筒配合单组螺旋叶片，在实际作业时，SBS改性剂易因搅拌剪切力不足或物料运动轨迹单一，出现局部团聚现象，导致改性剂无法在沥青与石料中均匀分散，进而影响混凝土的抗高低温性能、抗老化性能等关键指标，难以满足道路工程对高性能改性沥青混凝土的使用需求
[0016]本实用新型中，所述的一种SBS改性沥青混凝土搅拌装置，通过设置的搅拌组件，在搅拌组件中的搅拌主体采用双锥圆体设置，在投放沥青和石料时，首先由上侧的锥形螺旋搅拌片对物料进行剪切输送混料效果，破解SBS改性剂可能存在的局部团聚，确保改性剂在混凝土中均匀分布，锥圆体的设置，在改性沥青混凝土搅拌筒中部位置时，物料进行一次聚合，后续下侧锥形螺旋搅拌片对物料进行搅拌输送作用，另外在下侧还配合设置有搅拌杆，能够对物料进行搅拌混合，使拌合的沥青混凝土更加均匀，在锥形螺旋搅拌片中设置有电热丝，能够使锥形螺旋搅拌片为高温状态，在搅拌的同时保障沥青的流动性，避免沥青结块。
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Figure CN224877756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of asphalt concrete processing technology, and in particular to an SBS modified asphalt concrete mixing device. Background Technology
[0002] In the production process of SBS modified asphalt concrete, the mixing effect of the mixing device directly determines the final performance of the concrete.
[0003] However, most existing mixing devices use a single mixing structure, such as a straight-tube mixing drum with a single set of spiral blades. In actual operation, the SBS modifier is prone to local agglomeration due to insufficient mixing shear force or a single material movement trajectory. This results in the modifier not being able to disperse evenly in the asphalt and aggregate, which in turn affects the key indicators of concrete such as high and low temperature resistance and aging resistance, making it difficult to meet the requirements of road engineering for high-performance modified asphalt concrete.
[0004] To address the aforementioned issues, we propose an SBS-modified asphalt concrete mixing device. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an SBS modified asphalt concrete mixing device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A mixing device for SBS modified asphalt concrete includes a modified asphalt concrete mixing drum and a mixing assembly. The mixing assembly includes a rotating shaft and a shaft seat. The rotating shaft rotatably passes through the inner side of the modified asphalt concrete mixing drum, and a double-conical body is fixedly connected to the upper end of the rotating shaft. Conical spiral mixing blades are fixedly connected to the outer sides of the upper and lower side walls of the double-conical body. The two conical spiral mixing blades are smoothly connected. Heating wires are embedded inside the conical spiral mixing blades. An insulating lever is rotatably installed on the lower side of the shaft seat. A spring is fixedly installed on the upper side of the left end of the insulating lever. A contact electrode seat is fixedly connected to the upper side of the spring. A plurality of mixing rods are evenly distributed and fixedly installed on the outer sides of the upper and lower side walls of the double-conical body.
[0008] Furthermore, a fixing ring is fixedly installed on the outer wall of the rotating shaft, and a metal contact ring is fixedly installed at the bottom of the fixing ring. The metal contact ring abuts against the contact electrode seat, and the heating wire is electrically connected to the metal contact ring.
[0009] Furthermore, the bearing seat is screwed onto the bottom of the modified asphalt concrete mixing drum.
[0010] Furthermore, a counterweight iron ball is fixedly connected to the bottom right end of the insulating lever.
[0011] Furthermore, the spring is made of copper alloy, and a conductive cable is fixedly connected to the side of the spring.
[0012] Furthermore, a bracket is fixedly installed at the bottom of the modified asphalt concrete mixing drum, a drive motor is fixedly installed on the upper side of the bracket, the output end of the drive motor is fixedly connected to the lower end of the rotating shaft, and a control switch is fixedly installed on the outer wall of the bracket.
[0013] Furthermore, a protective cover is rotatably sleeved on the outer side of the lower end of the rotating shaft. The protective cover is fixedly installed at the bottom of the modified asphalt concrete mixing drum and covers the outside of the insulating lever.
[0014] Furthermore, a discharge pipe is fixedly installed at the bottom of the modified asphalt concrete mixing drum, and an electric valve is fixedly installed on the discharge pipe.
[0015] Compared with related technologies, the SBS modified asphalt concrete mixing device proposed in this utility model has the following beneficial effects:
[0016] In this invention, an SBS modified asphalt concrete mixing device is described. The mixing assembly features a double-conical cylindrical mixing body. When asphalt and aggregate are added, the upper conical spiral mixing blades first shear and transport the materials, effectively preventing localized agglomeration of the SBS modifier and ensuring uniform distribution of the modifier in the concrete. The conical cylindrical design allows for initial material aggregation in the middle of the mixing drum. Subsequently, the lower conical spiral mixing blades further mix and transport the materials. Additionally, a mixing rod is installed at the bottom to further agitate and mix the materials, resulting in a more uniform asphalt concrete mixture. Heating wires are incorporated within the conical spiral mixing blades to maintain a high temperature, ensuring the asphalt's fluidity and preventing clumping during mixing. Attached Figure Description
[0017] Figure 1 A three-dimensional structural diagram of an SBS-modified asphalt concrete mixing device proposed in this utility model. Figure 1 ;
[0018] Figure 2 A three-dimensional structural diagram of an SBS-modified asphalt concrete mixing device proposed in this utility model. Figure 2 ;
[0019] Figure 3 A three-dimensional structural diagram of an SBS-modified asphalt concrete mixing device proposed in this utility model. Figure 3 ;
[0020] Figure 4A three-dimensional structural diagram of an SBS-modified asphalt concrete mixing device proposed in this utility model. Figure 4 ;
[0021] Figure 5 for Figure 4 Enlarged diagram of part A in the middle;
[0022] Figure 6 Schematic diagram of the three-dimensional structure of the stirring assembly Figure 1 ;
[0023] Figure 7 Schematic diagram of the three-dimensional structure of the stirring assembly Figure 2 .
[0024] In the diagram: 1. Modified asphalt concrete mixing drum; 2. Support; 3. Control switch; 4. Drive motor; 5. Mixing assembly; 51. Rotating shaft; 52. Shaft seat; 53. Fixing ring; 54. Metal contact ring; 55. Insulating lever; 56. Counterweight ball; 57. Spring; 58. Contact electrode seat; 59. Conductive cable; 510. Double cone body; 511. Conical spiral mixing blade; 512. Mixing rod; 6. Protective cover; 7. Feed pipe; 8. Electric valve. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] Reference Figures 1-7 An SBS modified asphalt concrete mixing device includes a modified asphalt concrete mixing drum 1 and a mixing assembly 5. The mixing assembly 5 includes a rotating shaft 51 and a shaft seat 52. The rotating shaft 51 rotates through to the inside of the modified asphalt concrete mixing drum 1, and a double conical body 510 is fixedly connected to the upper end of the rotating shaft 51. Conical spiral mixing blades 511 are fixedly connected to the outer sides of the upper and lower side walls of the double conical body 510. The two conical spiral mixing blades 511 are smoothly connected. Heating wires are embedded inside the conical spiral mixing blades 511. An insulating lever 55 is rotatably installed on the lower side of the shaft seat 52. A spring 57 is fixedly installed on the upper side of the left end of the insulating lever 55. A contact electrode seat 58 is fixedly connected to the upper side of the spring 57. Several mixing rods 512 are evenly distributed and fixedly installed on the outer sides of the upper and lower side walls of the double conical body 510.
[0027] With the above-mentioned configuration, the conical spiral mixing blade 511 can provide mixing and shearing action on the material during mixing, which can break the local agglomeration that may exist in the SBS modifier, ensure that the modifier is evenly distributed in the concrete, and improve the uniformity of the combination between asphalt and materials. In addition, the mixing rod 512 can mix the material that is fed into the bottom of the inner side of the modified asphalt concrete mixing drum 1, further improving the mixing uniformity of the material.
[0028] In this method, a fixed ring 53 is fixedly installed on the outer wall of the rotating shaft 51, and a metal contact ring 54 is fixedly installed at the bottom of the fixed ring 53. The metal contact ring 54 abuts against the contact electrode seat 58, and the heating wire is electrically connected to the metal contact ring 54. The shaft seat 52 is screwed to the bottom of the modified asphalt concrete mixing drum 1. A counterweight iron ball 56 is fixedly connected to the bottom of the right end of the insulating lever 55. The spring 57 is made of alloy copper, and a conductive cable 59 is fixedly connected to the side of the spring 57.
[0029] With the above-mentioned configuration, the counterweight iron ball 56 is relatively heavy, which can cause the insulating lever 55 to tilt to the left, so that the contact electrode seat 58 on the left side of the insulating lever 55 can maintain contact with the metal contact ring 54. In addition, an alloy copper spring 57 is connected to the bottom of the metal contact ring 54, which can maintain a stable electrical connection between the contact electrode seat 58 and the metal contact ring 54. Compared with the electrical connection method of the rotating body that relies on elastic contact, the rotating body electrical connection method in this utility model has the advantage of being more stable. The double protection of the counterweight iron ball 56 and the spring 57 avoids the elastic fatigue of the spring 57 in the later stage.
[0030] In this method, a protective cover 6 is rotatably sleeved on the outer side of the lower end of the rotating shaft 51. The protective cover 6 is fixedly installed at the bottom of the modified asphalt concrete mixing drum 1 and covers the outside of the insulating lever 55.
[0031] By setting it up in the above manner, the protective cover 6 protects the internal components and ensures the electrical stability of the rotating body.
[0032] In this method, a bracket 2 is fixedly installed at the bottom of the modified asphalt concrete mixing drum 1, a drive motor 4 is fixedly installed on the upper side of the bracket 2, the output end of the drive motor 4 is fixedly connected to the lower end of the rotating shaft 51, and a control switch 3 is fixedly installed on the outer wall of the bracket 2.
[0033] With the above configuration, after the drive motor 4 starts, it can drive the rotating shaft 51 to rotate, which in turn drives the double conical body 510 to rotate, causing the conical spiral mixing blades 511 and the mixing rod 512 on it to mix the material inside the modified asphalt concrete mixing drum 1.
[0034] In this method, a discharge pipe 7 is fixedly installed at the bottom of the modified asphalt concrete mixing drum 1, and an electric valve 8 is fixedly installed on the discharge pipe 7.
[0035] The working principle of the SBS modified asphalt concrete mixing device provided by this utility model is as follows:
[0036] During operation, the drive motor 4 on the support 2 is first started by the control switch 3. The output end of the drive motor 4 drives the rotating shaft 51 to rotate under the support of the shaft seat 52. The double conical body 510 at the upper end of the rotating shaft 51 rotates synchronously with the rotating shaft 51. When the asphalt and stone are put into the modified asphalt concrete mixing drum 1, the conical spiral stirring blades 511 on the outer side of the upper side wall of the double conical body 510 first generate shearing and conveying action on the material, breaking the local agglomeration phenomenon of SBS modifier. When the material moves to the middle of the modified asphalt concrete mixing drum 1 with the stirring motion, the polymerization is completed. Then, the conical spiral stirring blades 511 on the outer side of the lower side wall of the double conical body 510 continue to stir and convey the material. At the same time, the stirring rods 512 evenly distributed on the outer side of the upper and lower side walls of the double conical body 510 further stir and mix the material to ensure that the asphalt concrete is mixed evenly. Finally, the material can be discharged by opening the electric valve 8 on the discharge pipe 7.
[0037] During the mixing process, the conductive cable 59 is connected to the power supply, and the current is transmitted to the contact electrode seat 58 through the copper alloy spring 57. Due to the downward pulling force generated by the counterweight iron ball 56 at the bottom of the right end of the insulating lever 55, the left end of the insulating lever 55 is tilted upward. Combined with the elastic force of the spring 57, the contact electrode seat 58 always maintains contact with the metal contact ring 54 at the bottom of the fixed ring 53 on the outer wall of the rotating shaft 51. The current is then transmitted through the metal contact ring 54 to the heating wire embedded in the conical spiral mixing blade 511, so that the conical spiral mixing blade 511 is kept at a high temperature, ensuring the fluidity of the asphalt while mixing the material and preventing the asphalt from clumping.
[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An SBS-modified asphalt concrete mixing device, characterized in that, It includes a modified asphalt concrete mixing drum (1) and a mixing assembly (5); The mixing assembly (5) includes a rotating shaft (51) and a shaft seat (52). The rotating shaft (51) rotates through to the inside of the modified asphalt concrete mixing drum (1), and a double conical body (510) is fixedly connected to the upper end of the rotating shaft (51). Conical spiral mixing blades (511) are fixedly connected to the outer sides of the upper and lower side walls of the double conical body (510). The two conical spiral mixing blades (511) are smoothly connected. A heating wire is embedded inside the conical spiral mixing blades (511). An insulating lever (55) is rotatably installed on the lower side of the shaft seat (52). A spring (57) is fixedly installed on the upper side of the left end of the insulating lever (55). A contact electrode seat (58) is fixedly connected to the upper side of the spring (57). Several mixing rods (512) are evenly fixedly installed on the outer sides of the upper and lower side walls of the double conical body (510).
2. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, A fixed ring (53) is fixedly installed on the outer wall of the rotating shaft (51). A metal contact ring (54) is fixedly installed at the bottom of the fixed ring (53). The metal contact ring (54) abuts against the contact electrode seat (58). The heating wire is electrically connected to the metal contact ring (54).
3. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, The bearing seat (52) is screwed onto the bottom of the modified asphalt concrete mixing drum (1).
4. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, A counterweight iron ball (56) is fixedly connected to the bottom right end of the insulating lever (55).
5. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, The spring (57) is made of copper alloy, and a conductive cable (59) is fixedly connected to the side of the spring (57).
6. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, The modified asphalt concrete mixing drum (1) is fixedly installed with a bracket (2) at the bottom. A drive motor (4) is fixedly installed on the upper side of the bracket (2). The output end of the drive motor (4) is fixedly connected to the lower end of the rotating shaft (51). A control switch (3) is fixedly installed on the outer wall of the bracket (2).
7. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, The lower end of the rotating shaft (51) is fitted with a protective cover (6), which is fixedly installed at the bottom of the modified asphalt concrete mixing drum (1) and covers the outside of the insulating lever (55).
8. The SBS-modified asphalt concrete mixing device according to claim 1, characterized in that, The bottom of the modified asphalt concrete mixing drum (1) is fixedly installed with a discharge pipe (7), and an electric valve (8) is fixedly installed on the discharge pipe (7).