Rotary asphalt mixing device

Abstract

This utility model relates to the technical field of asphalt mixing equipment, specifically a rotary asphalt mixing device, comprising a frame as the main supporting structure of the entire device; a cylinder fixed to the upper part of the frame, having an opening at the top and a discharge port at the bottom; a mixing assembly for mixing the asphalt liquid inside the cylinder; and a lifting assembly mounted on the frame for lifting the mixing assembly as a whole, allowing it to enter or exit the cylinder through the top opening; wherein the mixing assembly includes a driving component, a vertically arranged second shaft, and at least one set of paddle units, the driving component driving the paddle units to rotate via the second shaft; each paddle unit includes multiple paddles circumferentially hinged to a support, allowing the paddles to flip outward to an expanded state under centrifugal force and fall inward to a contracted state under gravity.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt mixing equipment, specifically a rotary asphalt mixing device, which is suitable for efficient mixing and separation of asphalt liquid in scenarios such as road construction and waterproof material production. Background Technology

[0002] In road construction and waterproofing material production, the mixing of asphalt slurry is a crucial step in ensuring material uniformity and construction quality. Currently, most common asphalt slurry mixing devices employ a fixed structure, with the mixing components and the asphalt slurry container typically integrated or fixed via a simple connection. These devices exhibit the following problems and drawbacks in practical use: 1. Difficult separation of mixing components: After mixing is completed, traditional mixing devices are difficult to separate from the cylinder. They often require complicated operations or tools for disassembly, which is cumbersome and time-consuming, seriously affecting the production rhythm and equipment turnover efficiency.

[0003] 2. Insufficient mixing uniformity: Existing mixing devices mostly use paddle structures with equal diameter or fixed angle, which have a limited mixing range and are prone to forming dead zones in the cylinder, resulting in stratification or uneven mixing of asphalt liquid components, affecting the quality of the final product.

[0004] The aforementioned problems limit the application effectiveness and economy of traditional mixing devices, and there is an urgent need for an improved mixing device that can achieve rapid separation and eliminate mixing dead zones. Utility Model Content

[0005] In order to overcome the problems of cumbersome separation of the mixing component from the cylinder and poor uniformity caused by dead corners in the existing mixing device, this utility model provides a rotary asphalt liquid mixing device. By setting up a lifting component and an expandable / retractable paddle and chain, the mixing component can be quickly separated from the cylinder and the dead corners of the mixing can be eliminated, thereby improving the convenience of operation and the uniformity of mixing.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a rotary asphalt liquid mixing device, including a frame as the main supporting body of the entire device; a cylinder fixed to the upper part of the frame, with an opening at the top and a discharge port at the bottom; a mixing assembly for mixing the asphalt liquid in the cylinder; and a lifting assembly installed on the frame for driving the mixing assembly to lift as a whole, so that it can enter or leave the cylinder from the top opening; wherein, the mixing assembly includes a driving member, a vertically arranged second shaft, and at least one set of paddle units, the driving member driving the paddle units to rotate through the second shaft; the paddle unit includes multiple paddles circumferentially hinged to a rod base, so that the paddles can flip outward to the unfolded state under the action of centrifugal force and fall back inward to the contracted state under the action of gravity; the mixing assembly also includes a chain connecting adjacent upper and lower paddle groups for forming a linkage when the paddles unfold, thereby expanding the mixing area.

[0007] The aforementioned rotary asphalt mixing device includes a lifting assembly comprising two vertically arranged columns, a drive motor, a chain driven by the drive motor to rotate in a cycle, and a frame fixed to the chain, with the mixing assembly mounted on the frame.

[0008] In the aforementioned rotary asphalt mixing device, the rear ends of the frame are provided with plate seats, and clamping rollers that abut against the side wall of the column and pressure rollers that abut against the inner side of the column are arranged on the plate seats.

[0009] In the aforementioned rotary asphalt mixing device, the driving component is a second motor, which is vertically fixed and connected to the second shaft via a coupling.

[0010] In the aforementioned rotary asphalt mixing device, two sets of paddle units are arranged along the axial direction of the second shaft.

[0011] In the aforementioned rotary asphalt mixing device, the length of the upper impeller is greater than the length of the lower impeller.

[0012] In the aforementioned rotary asphalt mixing device, the ratio of the length of the upper blade to the length of the lower blade is 1.5:1.

[0013] In the aforementioned rotary asphalt mixing device, the surface of the paddle is set at an inclined angle to the horizontal plane.

[0014] The aforementioned rotary asphalt mixing device has an inclination angle of 15°.

[0015] In the aforementioned rotary asphalt mixing device, the cylinder is fixed to the front of the frame by bolts, and the size of its top opening is smaller than the diameter of the mixing assembly in the contracted state.

[0016] The beneficial effects of this utility model are: 1. The lifting component drives the overall lifting of the mixing component, which enables quick and convenient separation of the mixing component from the cylinder, simplifying the operation process and improving the convenience and efficiency of the equipment.

[0017] 2. The combination of the expandable and retractable paddle structure and the linkage chain effectively expands the mixing range, eliminates the dead zones in the cylinder, and significantly improves the mixing uniformity and quality of the asphalt liquid. Attached Figure Description

[0018] The present invention will be further described below with reference to the embodiments and examples.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment.

[0020] Figure 2 The diagram shows the structure of the lifting assembly and stirring assembly in the embodiment.

[0021] Figure 3 This is a schematic diagram of the lifting component structure in an embodiment.

[0022] Figure 4 The diagram shows the structure of the plate base, clamping wheel, and pressure wheel in the embodiment.

[0023] Figure 5 This is a schematic diagram of the stirring assembly structure in an embodiment.

[0024] Figure 6 This is a schematic diagram of the rod holder, paddle plate, and chain fastener structure in an embodiment.

[0025] In the diagram: 1. Frame; 2. Cylinder; 3. Lifting assembly; 31. Column; 32. First motor; 33. First shaft; 34. Sprocket; 35. Chain; 36. Frame; 37. Plate base; 38. Clamping wheel; 39. Pressure wheel; 4. Mixing assembly; 41. Second motor; 42. Second shaft; 43. Rod base; 44. Paddle plate; 45. Chain buckle. Detailed Implementation

[0026] This application relates to a rotary asphalt mixing device, such as... Figure 1-6As shown, the device achieves efficient mixing and convenient separation of asphalt liquid through the coordinated operation of frame 1, cylinder 2, mixing component 4, and lifting component 3. Frame 1, as the main supporting structure of the entire device, is welded from high-strength steel to ensure stability. Cylinder 2 is fixed to the upper front of frame 1. The top opening of cylinder 2 is used to hold asphalt liquid, and the bottom is equipped with a discharge port to facilitate the discharge of asphalt liquid after mixing. Cylinder 2 is fixed to the front of frame 1 with bolts. The size of its top opening must be smaller than the diameter of mixing component 4 after contraction to prevent asphalt liquid from overflowing during mixing. Mixing component 4 is quickly separated from cylinder 2 through lifting component 3, avoiding the tedious manual disassembly.

[0027] The lifting assembly 3 includes two vertically arranged columns 31, a first motor 32, a first shaft 33, sprockets 34, a chain 35, a frame 36, a base 37, clamping rollers 38, and pressure rollers 39. The columns 31 are fixed to the upper rear of the frame 1 by bolts. The first shaft 33 is provided at both the top and bottom. The two ends of the shaft are connected to the columns 31 through bearing seats to ensure smooth rotation. Sprockets 34 are arranged at intervals on the first shaft 33. The chain 35 is wound around the outside of the sprockets 34 to form a closed loop. The first motor 32 is connected to one of the first shafts 33 through a coupling. The drive sprocket 34 rotates, which in turn drives the chain 35 to circulate. The frame 36 is fixed to the side of the chain 35 by bolts and rises and falls with the chain 35. The rear ends of the frame 36 are provided with plate seats 37, which are bolted to the frame 36. The upper part of the plate seat 37 is surrounded by clamping wheels 38, which abut against the side wall of the column 31 to limit the horizontal displacement of the frame 36. The upper and lower ends of the plate seat 37 are provided with pressure wheels 39, which abut against the inner side of the column 31 to further enhance stability. When rising and falling, the frame 36 only moves vertically along the column 31 to avoid swaying.

[0028] Operating procedure: Before stirring, start the first motor 32, drive the chain 35 to lower the frame 36, and the stirring component 4 enters the cylinder 2. After stirring is completed, start the first motor 32 in reverse, the frame 36 rises, and the stirring component 4 detaches from the cylinder 2, making it easy to clean or replace the cylinder 2.

[0029] The mixing assembly 4 includes a second motor 41, a second shaft 42, rod seats 43, paddles 44, and a chain 45. The second motor 41 is vertically fixed to the upper part of the frame 36 away from the column 31. The output end is connected to the second shaft 42 via a coupling. Two rod seats 43 are arranged axially on the second shaft 42. Paddles 44 are evenly hinged to the rod seats 43 circumferentially. In the unfolded state: when the second motor 41 drives the second shaft 42 to rotate, the paddles 44 are subjected to centrifugal force and buoyancy of the asphalt liquid, and rotate outward around the hinge point, increasing the unfolding radius. The length of the upper paddle 44 is 1.5 times that of the lower paddle 44 (ratio 1.5:1), forming a differential diameter mixing between the upper and lower layers, expanding the mixing coverage area. In the contracted state: when the second shaft 42 stops rotating, the paddle 44 moves closer to the shaft under the action of gravity, and the chain 45 contracts synchronously, reducing the overall diameter to facilitate passage through the top opening of the cylinder 2. The chain 45 connects the upper and lower sets of paddles 44, forming a linkage when the paddles 44 are unfolded, so that the area between the two sets of paddles 44 is also included in the mixing range, eliminating mixing dead corners and improving uniformity. The paddle 44 is tilted at 15° (example angle, which can be adjusted according to actual conditions) to enhance the axial flow of the asphalt liquid and prevent stratification. The upper paddle 44 is longer than the lower paddle 44 to adapt to the characteristic that the viscosity of the asphalt liquid in the cylinder 2 increases with depth, resulting in more intense mixing in the upper layer and finer mixing in the lower layer.

[0030] Work process: First, pour the asphalt liquid into the cylinder 2, close the discharge port, start the lifting component 3, the frame 36 descends, the mixing component 4 enters the cylinder 2, then start the second motor 41, the second shaft 42 drives the paddle 44 to unfold and rotate at high speed, the chain 45 expands the mixing area in conjunction, and continue mixing for 5-10 minutes (time adjustable) until the asphalt liquid is uniform, then stop the second motor 41, the paddle 44 automatically retracts, start the lifting component 3, the frame 36 rises, the mixing component 4 detaches from the cylinder 2, the discharge port is opened, and the asphalt liquid is discharged.

[0031] The rotary asphalt mixing device in this embodiment solves the problems of difficult separation and uneven mixing in traditional mixing devices through mechanical structural innovation. It is suitable for road construction, waterproof material production and other scenarios, and has significant economic benefits and social value.

Claims

1. A rotary asphalt slurry mixing device, characterized in that: include The frame serves as the main load-bearing structure for the entire device; The cylinder is fixed to the upper part of the frame, with an opening at the top and a discharge port at the bottom; A stirring assembly is used to stir the asphalt liquid inside the cylinder; as well as A lifting assembly, mounted on the frame, is used to drive the stirring assembly to lift as a whole, so that it can enter or leave the cylinder from the top opening of the cylinder. The stirring assembly includes a driving component, a vertically arranged second shaft, and at least one set of paddle plate units. The driving component drives the paddle plate units to rotate via the second shaft. Each paddle plate unit includes multiple paddles circumferentially hinged to a rod base, allowing the paddles to flip outward to an unfolded state under centrifugal force and fall inward to a contracted state under gravity. The stirring assembly also includes a chain connecting adjacent paddle plate sets, which creates a linkage when the paddles unfold, expanding the stirring area.

2. The rotary asphalt mixing device according to claim 1, characterized in that: The lifting assembly includes two vertically arranged columns, a drive motor, a chain driven by the drive motor to rotate in a cycle, and a frame fixed to the chain. The stirring assembly is installed on the frame.

3. The rotary asphalt mixing device according to claim 2, characterized in that: The frame is provided with plate seats at both ends of the rear part. The plate seats are provided with clamping wheels that abut against the side wall of the column and pressure wheels that abut against the inner side of the column.

4. The rotary asphalt mixing device according to claim 1, characterized in that: The driving component is a second motor, which is vertically fixed and connected to the second shaft via a coupling.

5. The rotary asphalt mixing device according to claim 1, characterized in that: Two sets of the paddle plate units are arranged along the axial direction of the second shaft.

6. The rotary asphalt mixing device according to claim 5, characterized in that: The length of the upper-layer paddleboard is greater than that of the lower-layer paddleboard.

7. The rotary asphalt mixing device according to claim 6, characterized in that: The ratio of the length of the upper paddleboard to the length of the lower paddleboard is 1.5:

1.

8. The rotary asphalt mixing device according to claim 1, characterized in that: The surface of the paddle plate is set at an inclined angle to the horizontal plane.

9. The rotary asphalt mixing device according to claim 8, characterized in that: The tilt angle is 15°.

10. The rotary asphalt mixing device according to claim 1, characterized in that: The cylinder is fixed to the front of the frame by bolts, and the size of its top opening is smaller than the diameter of the stirring assembly in the contracted state.

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