Stirring device
By using the design of guide tubes and dispersion discs in the modified asphalt production line, the problem of poor tumbling effect of the spiral stirring device when processing high-viscosity asphalt rubber is solved, and the uniform mixing of the modified asphalt and the improvement of heating efficiency are achieved.
Patent Information
- Application Number
- CN202422743909.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In existing modified asphalt production lines, the spiral stirring device has poor tumbling effect when processing asphalt rubber with high viscosity, resulting in agglomeration of the rubber and low heating efficiency.
A stirring device is used to separate the stirring chamber into an inner flow channel and an outer flow channel through a guide tube, and spiral blades and a dispersion disk are used to realize the circulation flow of the asphalt rubber. Combined with the design of the guide tube and the dispersion disk, the uniformity and heating efficiency of the rubber are improved.
The uniform mixing of modified asphalt rubber and the improvement of heating efficiency are achieved, especially for asphalt rubber with poor fluidity and high viscosity, which shortens the modification time and improves the quality of modified asphalt.
Smart Images
Figure CN223404781U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of rubber production, and specifically relates to a stirring device. Background Art
[0002] Existing modified asphalt production lines typically use a spiral stirring device for batching and mixing. The device utilizes spiral blades to generate centrifugal force, creating a vortex motion between the asphalt and ingredients such as styrene-butadiene rubber and rubber powder. This promotes uniform fusion of the asphalt and ingredients, forming an asphalt compound. However, when producing modified asphalts with higher viscosities, the asphalt compound experiences poor tumbling, leading to compound clumping and reduced heating efficiency. Utility Model Content
[0003] In response to at least one of the above-mentioned defects or deficiencies in the prior art, the present application provides a stirring device that can enable the rubber material to circulate in the batching kettle, thereby improving the uniformity of the rubber material and facilitating the improvement of heating efficiency.
[0004] In order to achieve the above objectives, the present application provides a stirring device, comprising:
[0005] A batching kettle, wherein a stirring chamber is formed inside the batching kettle;
[0006] a flow guide cylinder, extending in the vertical direction and disposed in the stirring chamber to separate the stirring chamber into an inner flow channel and an outer flow channel;
[0007] A stirring main shaft extends vertically through the guide cylinder, the stirring main shaft comprising an inner shaft section located in the inner flow channel and an outer shaft section extending downwardly from the guide cylinder;
[0008] a spiral blade disposed at least partially around the outer peripheral wall of the inner shaft section of the barrel; and
[0009] The dispersion disk is arranged on the outer peripheral wall of the outer shaft section of the cylinder in a radially extending manner.
[0010] In some embodiments, the stirring device further comprises a plurality of stirring arms, and the plurality of stirring arms are circumferentially arranged on the outer periphery of the dispersion disk at intervals.
[0011] In some embodiments, the bottom wall of the batching kettle is formed as a downwardly recessed conical bottom wall, and the stirring arm includes an inclined arm section and a vertical arm section that are sequentially connected inside and outside.
[0012] In some embodiments, the stirring arm is detachably connected to the dispersion disk.
[0013] In some embodiments, the stirring device further includes a plurality of spoilers, and the plurality of spoilers are respectively disposed on the outer peripheral walls of the plurality of stirring arms.
[0014] In some embodiments, the stirring device further includes a plurality of support arms sequentially spaced apart along the circumference of the guide tube, and two ends of the support arms are respectively connected to the outer circumferential wall of the guide tube and the inner circumferential wall of the batching kettle.
[0015] In some embodiments, the support arm is detachably connected to the outer peripheral wall of the guide tube.
[0016] In some embodiments, the guide tube is formed by enclosing a plurality of unit plates, and two adjacent unit plates are detachably connected.
[0017] In some embodiments, the plurality of support arms are connected to the plurality of unit plates in a one-to-one correspondence.
[0018] In some embodiments, the stirring device includes an upper bearing seat arranged at the top of the batching kettle and a lower bearing seat arranged at the bottom of the batching kettle, and the upper end and lower end of the stirring main shaft are respectively rotatably connected to the upper bearing seat and the lower bearing seat.
[0019] Through the above technical solution, when using the stirring device of the present application to produce modified asphalt, the spiral blades can be used to drive the asphalt rubber to flow, so that the asphalt rubber forms a circulating flow between the inner flow channel and the outer flow channel, thereby achieving a good rolling effect and effectively improving the uniformity and heating efficiency of the asphalt rubber. In addition, the asphalt rubber that sinks to the bottom of the batching kettle is broken up and stirred by the dispersion plate, which can further improve the fluidity and uniformity of the asphalt rubber, effectively shorten the asphalt modification time, especially for asphalt rubber with poor fluidity and high viscosity, and can effectively improve the quality of the modified asphalt.
[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:
[0022] Figure 1 This is a schematic diagram of a stirring device in a specific embodiment of the present application;
[0023] Figure 2 for Figure 1 A top view of a stirring device;
[0024] Figure 3This is a schematic diagram of the circulation flow of materials when the stirring device according to a specific embodiment of the present application stirs the materials. The arrows in the figure indicate the flow direction of the materials.
[0025] Description of Reference Numerals
[0026] 1 Batching kettle 2 Draft tube
[0027] 3. Mixing spindle 4. Spiral blade
[0028] 5 Dispersion plate 6 Stirring arm
[0029] 7 Spoiler 8 Support arm
[0030] 9 Upper bearing seat 10 Lower bearing seat
[0031] 101 inner flow channel 102 outer flow channel
[0032] 601 inclined arm section 602 vertical arm section DETAILED DESCRIPTION
[0033] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.
[0034] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.
[0035] like Figures 1 to 3 As shown, an exemplary embodiment of the present application provides a stirring device, which includes a batching kettle 1, a guide tube 2, a stirring spindle 3, spiral blades 4, and a dispersion disk 5. A stirring chamber for accommodating ingredients such as asphalt and rubber powder is formed inside the batching kettle 1. The guide tube 2 is arranged in the stirring chamber extending in the vertical direction and divides the stirring chamber into an inner flow channel 101 and an outer flow channel 102. The inner flow channel 101 is the internal space of the guide tube 2, and the outer flow channel 102 is the space between the outer peripheral wall of the guide tube 2 and the inner peripheral wall of the batching kettle 1. Since the upper and lower ends of the guide tube 2 are both open, the upper and lower ends of the inner flow channel 101 and the outer flow channel 102 are interconnected. The stirring spindle 3 extends through the guide tube 2 in the vertical direction and includes an inner shaft section located in the inner flow channel 101 and an outer shaft section extending downward from the guide tube 2. Some or all of the spiral blades 4 are arranged around the outer circumferential wall of the inner shaft section, so that the guide tube 2 partially or completely surrounds the spiral blades 4. A dispersion disk 5 is radially extending along the outer circumferential wall of the outer shaft section; in other words, the dispersion disk 5 is positioned below the guide tube 2. In this embodiment, the stirring shaft 3 drives the spiral blades 4 and the dispersion disk 5 to rotate synchronously, thereby promoting the flow and mixing of materials in the batching kettle 1.
[0036] Thus, when the modified asphalt is produced by the stirring device of the present application, the stirring main shaft 3 rotates so that the spiral blade 4 pushes the asphalt rubber to flow in the inner flow channel 101 (i.e., in the inner flow channel 101) in the up and down directions, for example, referring to Figure 3 When the spiral blades 4 push the asphalt rubber in the inner flow channel 101 to flow upward (the direction of the arrow is the flow direction), a high-pressure area is formed in the upper area of the guide tube 2, and a low-pressure area is formed in the lower area. The asphalt rubber flowing out of the inner flow channel 101 from the upper tube port of the outflow guide tube 2 can flow to the outer flow channel 102 and flow downward along the outer flow channel 102 under the action of fluid pressure and its own gravity, and then flow back into the inner flow channel 101 from the lower tube port of the guide tube 2, so that the asphalt rubber forms a circulating flow in the batching kettle 1, which has the effect of tumbling mixing, so that the asphalt and the ingredients are fully integrated, and the uniformity of the asphalt rubber is effectively improved. When a heat transfer oil coil is provided around the tank body of the batching kettle 1 and heat is conducted to the rubber through the tank wall, it helps to improve the heating efficiency of the rubber. In addition, the rotating dispersion disk 5 can drive the asphalt rubber sinking to the bottom of the batching kettle 1 to perform centrifugal movement, accelerate the stirring and mixing process of the asphalt rubber, further improve the fluidity and uniformity of the asphalt rubber, shorten the asphalt modification time, especially for asphalt rubber with poor fluidity and high viscosity, effectively improving the quality of the modified asphalt.
[0037] It should be noted that Figure 3 While the illustrated embodiment depicts an upward flow of the asphalt material within the inner flow channel 101 by the spiral blades 4, in other embodiments, the spiral blades 4 can also force the asphalt material within the inner flow channel 101 downward. This depends on the direction of rotation of the spiral blades 4, which is not limited in this application. In practical applications, the batching material typically includes a powder. Using the spiral blades 4 to force the batching material downward facilitates the sinking and dispersion of the powder, preventing dust generation. Furthermore, to ensure a circulating flow of the asphalt material, the batching material injected into the batching kettle 1 should at least submerge the guide tube 2.
[0038] In this application, unless otherwise indicated, directional terms such as "upper" and "lower" generally refer to the upper and lower directions shown in the drawings. However, in actual application, they are not limited to the upper and lower directions shown in the drawings. For example, they can also be inclined relative to the upper and lower directions. The directional terms "inner" and "outer" generally refer to the inside and outside of a component, or the near end and far end of a component relative to a reference object.
[0039] In one embodiment, the stirring device further comprises a plurality of stirring arms 6, which are arranged on the outer periphery of the dispersion disc 5 in a circumferentially spaced order, so that the dispersion disc 5 can drive the plurality of stirring arms 6 to rotate, thereby improving the stirring ability of the material and helping to fully disperse the material to be mixed. Figure 1In the illustrated embodiment, two stirring arms 6 are provided, and the two stirring arms 6 are coaxially and symmetrically arranged on both sides of the dispersion disk 5 .
[0040] In one embodiment, if Figure 1 As shown, the bottom wall of the batching kettle 1 is formed into a conical bottom wall that is recessed downward. The conical bottom wall smoothly transitions to the side wall of the batching kettle 1, improving the fluidity of the material. Accordingly, the stirring arm 6 includes an inclined arm section 601 and a vertical arm section 602, which are sequentially connected inside and outside. The inclined arm section 601 is inclined relative to the axis of the stirring main shaft 3, and the inclination angle of the inclined arm section 601 is roughly consistent with the inclination angle of the conical bottom wall. The vertical arm section 602 is parallel to the side wall of the batching kettle 1, so that the structure of the entire stirring arm 6 roughly matches the bottom peripheral wall of the batching kettle 1. This allows the stirring arm 6 to stir the material that has sunk to the bottom of the batching kettle 1, prevent the formation of sediment, and improve the circulation effect of the material.
[0041] In one embodiment, the stirring arm 6 of the present application is configured to be detachably connected to the dispersion disk 5. For example, the stirring arm 6 and the dispersion disk 5 can be fixed through a bolt assembly to facilitate the removal of the stirring arm 6 for cleaning and maintenance.
[0042] In one embodiment, if Figure 1 As shown, the stirring device of the present application also includes a plurality of spoilers 7, which are respectively arranged on the outer peripheral walls of the plurality of stirring arms 6, so that the stirring arms 6 can drive the spoilers 7 to rotate around the stirring main shaft 3, thereby enhancing the turbulence of the fluid, improving the mixing uniformity, and enabling different components to be better integrated. In addition, when stirring materials with solid particles such as asphalt rubber, the solid particles can be kept in a suspended state to prevent them from forming precipitation at the bottom of the batching kettle 1. Preferably, the spoiler 7 is arranged at the outer end of the stirring arm 6, such as the vertical arm section 602 shown in the figure, so as to achieve a wall scraping effect and enhance the outer layer turbulent mixing effect.
[0043] In one embodiment, the stirring device further comprises a plurality of support arms 8 arranged in sequence along the circumference of the guide tube 2, with the ends of the support arms 8 respectively connected to the outer circumferential wall of the guide tube 2 and the inner circumferential wall of the batching kettle 1, so that the guide tube 2 can be stably mounted in the stirring chamber. Figure 1 As shown, in addition to arranging multiple support arms 8 circumferentially outside the guide tube 2, multiple support arms 8 can also be arranged in the vertical direction, for example, two layers of support arms 8 are provided in the vertical direction, thereby improving the stability of the guide tube 2. Preferably, two support arm groups are arranged vertically, each group having three support arms 8. The three support arms 8 are arranged circumferentially outside the guide tube 2, with adjacent support arms 8 forming a 120° angle, thereby further improving the stability of the guide tube 2.
[0044] In order to facilitate the disassembly of the guide tube 2 for regular cleaning and maintenance of the spiral blades 4, the support arm 8 is configured to be detachably connected to the outer peripheral wall of the guide tube 2. For example, the support arm 8 and the outer peripheral wall of the guide tube 2 can be connected by a bolt assembly. The present application does not limit the connection method of the support arm 8, as long as it meets the requirement of convenient disassembly. Furthermore, the guide tube 2 can be formed by a plurality of unit plates, wherein a detachable connection is formed between two adjacent unit plates. For example, a bolt assembly can be used to connect two adjacent unit plates. The present application does not limit this. By assembling the guide tube 2 from a plurality of unit plates, on the one hand, the difficulty of disassembling the guide tube 2 can be reduced. For example, a plurality of unit plates can be disassembled sequentially without having to disassemble the guide tube 2 all at once to prevent the guide tube 2 from falling and causing damage. On the other hand, the difficulty of forming the guide tube 2 can be reduced, thereby reducing the production and maintenance costs of the guide tube 2.
[0045] When disassembling the guide tube 2, in addition to removing all the unit panels at once, it is also possible to remove only one unit panel, thereby forming an inspection window in the guide tube 2. For example, an inspection window having an arc length of one-third of the circumference of the guide tube 2 can be formed. In other embodiments, the guide tube 2 can also be composed of a cylinder body and a unit panel, wherein the circumferential wall of the cylinder body is formed with an inspection window, and the unit panel is detachably covered over the inspection window, thereby allowing maintenance without disassembling the cylinder body.
[0046] Furthermore, multiple support arms 8 are respectively connected to multiple unit plates in a one-to-one correspondence, so that when disassembling the guide tube 2, any unit plate can be disassembled. Under the support of the support arms 8, there is no need to consider the disassembly order of the multiple unit plates, thereby improving the flexibility of the cylinder disassembly.
[0047] In one embodiment, the stirring device includes an upper bearing seat 9 disposed at the top of the batching kettle 1 and a lower bearing seat 10 disposed at the bottom of the batching kettle 1. The upper end and lower end of the stirring main shaft 3 are respectively connected to the upper bearing seat 9 and the lower bearing seat 10 to form a rotational connection, so that the stirring main shaft 3 can be stably disposed in the stirring chamber and achieve high-speed rotation, which helps to increase the flow rate of the material. It is understood that the stirring device also includes a driving device for driving the stirring main shaft 3, such as a motor, a hydraulic pump, etc., which is not limited in this application.
[0048] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0049] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0051] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A stirring device, characterized in that: include: A batching kettle (1), wherein a stirring chamber is formed inside the batching kettle (1); A flow guide cylinder (2) is arranged in the stirring chamber in an extending manner in the up-down direction and separates the stirring chamber into an inner flow channel (101) and an outer flow channel (102); A stirring main shaft (3) extends in an up-down direction and passes through the guide cylinder (2), wherein the stirring main shaft (3) comprises an inner cylinder shaft section located in the inner flow channel (101) and an outer cylinder shaft section extending downwardly out of the guide cylinder (2); A spiral blade (4) is at least partially arranged around the outer peripheral wall of the shaft section in the barrel; and The dispersion disc (5) is arranged on the outer peripheral wall of the outer shaft section of the cylinder in a radially extending manner.
2. The stirring device according to claim 1, characterized in that The stirring device further comprises a plurality of stirring arms (6), and the plurality of stirring arms (6) are arranged on the outer periphery of the dispersion disk (5) in a circumferential direction at intervals in sequence.
3. The stirring device according to claim 2, characterized in that The bottom wall of the batching kettle (1) is formed as a conical bottom wall that is recessed downward, and the stirring arm (6) comprises an inclined arm section (601) and a vertical arm section (602) that are sequentially connected inside and outside.
4. The stirring device according to claim 2, characterized in that The stirring arm (6) is detachably connected to the dispersion disk (5).
5. The stirring device according to claim 2, characterized in that The stirring device further comprises a plurality of spoilers (7), and the plurality of spoilers (7) are respectively arranged on the outer peripheral walls of the plurality of stirring arms (6).
6. The stirring device according to claim 1, characterized in that The stirring device further comprises a plurality of support arms (8) arranged in sequence and at intervals along the circumference of the guide tube (2), and the two ends of the support arms (8) are respectively connected to the outer peripheral wall of the guide tube (2) and the inner peripheral wall of the batching kettle (1).
7. The stirring device according to claim 6, characterized in that The support arm (8) is detachably connected to the outer peripheral wall of the guide cylinder (2).
8. The stirring device according to claim 7, characterized in that The guide tube (2) is formed by enclosing a plurality of unit plates, and two adjacent unit plates are detachably connected.
9. The stirring device according to claim 8, characterized in that The plurality of support arms (8) are respectively connected to the plurality of unit plates in a one-to-one correspondence.
10. The stirring device according to any one of claims 1 to 9, characterized in that The stirring device comprises an upper bearing seat (9) arranged at the top of the batching kettle (1) and a lower bearing seat (10) arranged at the bottom of the batching kettle (1), and the upper end and the lower end of the stirring main shaft (3) are respectively rotatably connected to the upper bearing seat (9) and the lower bearing seat (10).