Asphalt concrete mixing equipment

Abstract

The utility model relates to the technical field of mixing equipment, in particular to mixing equipment for preparing asphalt concrete by mixing asphalt and gravel materials. The utility model provides asphalt concrete mixing equipment which comprises a rack, the upper portion of the rack is provided with a uniform stirring assembly used for mixing asphalt and gravel materials in an internal and external coaxial stirring mode, and a discharging assembly used for uniformly discharging materials in a vibration mode is arranged below the uniform stirring assembly. A discharging assembly capable of controlling the uniform stirring assembly to discharge is additionally arranged under the uniform stirring assembly, and a smoke discharging assembly capable of performing smoke treatment is additionally arranged at the rear part of the uniform stirring assembly; the mixing equipment disclosed by the utility model is provided with the uniform stirring assembly, the discharging assembly and the smoke discharging assembly, so that uniform-speed discharging can be performed after asphalt concrete is uniformly stirred, and smoke dust and volatile matters can be treated in the stirring process.

Description

Technical Field

[0001] The present application relates to the technical field of mixing equipment, and particularly relates to a mixing equipment for mixing asphalt and sand and gravel to produce asphalt concrete. Background Art

[0002] In the prior art, asphalt concrete is mainly composed of 95% sand and gravel and 5% asphalt. Generally, a mixer is used for mixing. After mixing evenly, the asphalt concrete is directly poured out, resulting in the direct accumulation of the asphalt concrete, which affects the uniformity of the asphalt concrete, thereby reducing the compressive strength and rutting resistance of the asphalt concrete. Moreover, smoke and volatiles are generated during the mixing process. Utility Model Content

[0003] The problem to be solved by the present application is that the existing mixing equipment for asphalt concrete directly pours out after mixing, which will affect the uniformity of the asphalt concrete, and smoke and volatiles are easily generated during the mixing process.

[0004] To solve the above technical problems, the present application provides an asphalt concrete mixing equipment, including a frame. An evenly mixing assembly for mixing asphalt and sand and gravel is arranged on the upper part of the frame in a manner of internal and external coaxial mixing. A discharging assembly for evenly discharging materials by vibration is arranged below the evenly mixing assembly. A discharging control assembly capable of controlling whether the evenly mixing assembly can discharge materials is additionally arranged directly below the evenly mixing assembly. A smoke exhaust assembly capable of performing flue gas treatment is additionally arranged at the rear of the evenly mixing assembly.

[0005] Since the mixing equipment of the present application has an evenly mixing assembly, a discharging assembly and a smoke exhaust assembly, it can discharge materials at a uniform speed after the asphalt concrete is evenly mixed, and can also treat smoke and volatiles during the mixing process, solving the problems that the existing mixing equipment for asphalt concrete directly pours out after mixing, which will affect the uniformity of the asphalt concrete, and smoke and volatiles are easily generated during the mixing process. Brief Description of the Drawings

[0006] Figure 1 Schematic diagram of the upper part of the overall structure of the embodiment.

[0007] Figure 2 Schematic diagram of the lower part of the overall structure of the embodiment.

[0008] Figure 3 Schematic diagram of the structure of the evenly mixing assembly.

[0009] Figure 4 Schematic diagram of the structure of the paddle.

[0010] Figure 5 Schematic diagram of the structure of the discharging port.

[0011] Figure 6 It is a structural schematic diagram of the discharging assembly.

[0012] Figure 7 It is a structural schematic diagram of the telescopic frame.

[0013] Figure 8 It is a structural schematic diagram of the supporting block.

[0014] Figure 9 It is a structural schematic diagram of the unloading assembly.

[0015] Figure 10 It is a structural schematic diagram of the smoke exhaust assembly.

[0016] In the figure: 1. Smoke exhaust assembly; 2. Stirring and mixing assembly; 3. Frame; 4. Discharging assembly; 5. Cover plate; 6. Unloading assembly; 7. Stirring motor; 8. Shaft rod; 9. Cover plate; 10. Blade; 11. Cylinder body; 12. Inner blade; 13. Outer blade; 14. Discharge port; 15. Track; 16. Telescopic frame; 17. Vibration motor; 18. Support plate; 19. Discharge hopper; 20. Upper supporting block; 21. Connecting plate; 22. Connecting block; 23. Lower supporting block; 24. Fixed block; 25. Elastic block; 26. Movable block; 27. Driving cylinder; 28. Material shielding plate; 29. Fixed plate; 30. Air collecting hopper; 31. Smoke pipe. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. Embodiment

[0018] The present application relates to asphalt concrete mixing equipment. As Figures 1-10 shown, the mixing equipment includes a frame 3 for playing a basic bearing role. A stirring and mixing assembly 2 for mixing asphalt and sand and gravel is arranged on the upper part of the frame 3 in a coaxial inner and outer stirring manner. In order to facilitate the discharge of the mixed asphalt concrete, a discharging assembly 4 that discharges materials evenly by vibration is arranged below the stirring and mixing assembly 2. In order to reasonably control the discharging time of the stirring and mixing assembly 2, a discharging control assembly 6 that can control whether the stirring and mixing assembly 2 can discharge materials is additionally arranged directly below the stirring and mixing assembly 2. Since smoke and dust or volatiles will be generated during the mixing process of asphalt and sand and gravel, a smoke exhaust assembly 1 that can perform flue gas treatment is additionally arranged behind the stirring and mixing assembly 2.

[0019] The stirring component 2 includes a cylinder body 11, paddle blades 10 (outer paddle blades 13 and inner paddle blades 12), a stirring motor 7, a shaft rod 8, and a cover plate 9. Above the right side of the frame 3, there is a cylinder body 11 fixedly connected thereto. Inside the cylinder body 11, there are paddle blades 10 for stirring asphalt and sand and gravel. On the left side outside the cylinder body 11, there is a stirring motor 7 for providing a power source. The stirring motor 7 is connected to the paddle blades 10 through a shaft rod 8 passing through the cylinder body 11. Since volatiles are easily generated during the stirring of asphalt and dust is easily generated from sand and gravel, a cover plate 9 is provided at the top of the cylinder body 11 and is pivotally connected thereto.

[0020] The opening method of the cover plate 9 can be manual opening or automatic opening. When it is automatic opening, an electric push rod can be added between the cover plate 9 and the cylinder body 11 to control the opening and closing of the cover plate 9.

[0021] In order to fully stir the asphalt and sand and gravel inside the cylinder body 11, the paddle blades 10 are arranged in a spiral shape on the surface of the shaft rod 8. According to the different arrangement diameters of the paddle blades 10, they are divided into outer paddle blades 13 and inner paddle blades 12. The diameter size of the outer paddle blades 13 is larger than that of the inner paddle blades 12. Through the combination of the outer paddle blades 13 and the inner paddle blades 12, the asphalt and sand and gravel inside the cylinder body 11 can be fully stirred. Since the size of the outer paddle blades 13 is larger, in order to avoid the outer paddle blades 13 bearing a large resistance during stirring, weight-reducing holes that do not affect the anti-bending strength during stirring can be opened on the surface of the outer paddle blades 13. Right below the bottom of the cylinder body 11, there is a discharge port 14 for discharging asphalt concrete.

[0022] The discharging component 4 includes a track 15, a support plate 18, a vibration motor 17, a telescopic frame 16 (support block, connecting block 22, connecting plate 21), and a discharging hopper 19. Below the cylinder body 11, there is a track 15 for receiving asphalt concrete. Symmetrically arranged below the track 15 are support plates 18 for supporting the track 15. Outside the support plates 18, there is a vibration motor 17 fixedly connected thereto for driving the track 15 to move up and down. In order to enable the track 15 to move up and down, so that the asphalt concrete moves from left to right along the track 15, a plurality of groups of telescopic frames 16 are symmetrically arranged below the track 15. At the right end of the track 15, there is also a discharging hopper 19 for receiving asphalt concrete.

[0023] In order to be able to perform effective up-and-down reciprocating vibration, the telescopic frame 16 is composed of support blocks (upper support block 20, lower support block 23), connecting block 22 and connecting plate 21. The support blocks are divided into upper support block 20 and lower support block 23 according to their arrangement positions. The upper support block 20 is fixed to the lower part of the track 15, and the lower support block 23 is fixed to the upper part of the frame 3. The upper support block 20 and the lower support block 23 are respectively connected with connecting plates 21 that can rotate around them. The two connecting plates 21 are connected by a connecting block 22 arranged on one side. Thus, driven by the vibration motor 17, the connecting plate 21 can swing around the upper support block 20 and the lower support block 23 to generate a swinging displacement, so that the distance between the upper support block 20 and the lower support block 23 can be continuously changed to form a continuous vibration effect.

[0024] The support block is divided into a fixed block 24, a movable block 26 and an elastic block 25. The fixed block 24 is fixed and immovable, while the movable block 26 is placed at the central position inside the fixed block 24 and is fixedly connected to the connecting plate 21. A plurality of elastic blocks 25 are arranged between the periphery of the movable block 26 and the fixed block 24. The movable block 26 can rotate together with the connecting plate 21, thereby applying a pressing force to the elastic block 25. As the pressing force increases, the elastic force accumulated by the elastic block 25 also gradually increases, enabling the connecting plate 21 to reciprocate between the upper support block 20 and the lower support block 23, and preventing the telescopic frame 16 from failing.

[0025] A cover plate 5 is also arranged on the right side of the frame 3 to shield the track 15 to prevent foreign objects from falling into the track 15 during the production process and mixing with the asphalt concrete.

[0026] Of course, the telescopic frame 16 can also use the commonly used spring structure in the prior art and then be arranged between the frame 3 and the track 15 support.

[0027] The discharging assembly 6 includes a driving cylinder 27 (air cylinder, hydraulic cylinder or electric cylinder) and a material shielding plate 28. The driving cylinder 27 is arranged on the left side of the cylinder body 11, and the material shielding plate 28 is arranged at the position of the discharging port 14. The material shielding plate 28 is connected to the driving cylinder 27 and is driven by it. When it is necessary to discharge the stirred asphalt concrete through the discharging port 14, at this moment, the driving cylinder 27 acts to pull the material shielding plate 28 to move towards the left side of the discharging port 14, so that the discharging port 14 is unblocked, and the asphalt concrete inside the cylinder body 11 can fall onto the upper part of the track 15 along the discharging port 14.

[0028] The smoke exhaust assembly 1 includes a gas collecting hopper 30, a fixing plate 29, and a smoke pipe 31. The gas collecting hopper 30 is arranged at the rear of the cylinder body 11. Fixing plates 29 for connecting with the cylinder body 11 are arranged on both sides of the gas collecting hopper 30. A smoke pipe 31 for connecting with the gas collecting hopper 30 is arranged at the bottom of the gas collecting hopper 30. The smoke pipe 31 can suck the soot or volatiles generated inside the cylinder body 11 by means of a negative pressure fan, and then use the commonly used flue gas purification equipment in the prior art for purification.

[0029] During use, the asphalt and concrete to be mixed are poured into the cylinder body 11, and then the cover plate 9 is closed. The stirring motor 7 is started to drive the paddle 10 to rotate through the shaft rod 8, so as to use the outer paddle 13 and the inner paddle 12 to perform high-speed and sufficient stirring operation on the asphalt and sand and gravel materials inside the cylinder body 11, thereby obtaining asphalt concrete. Then, the driving cylinder 27 controls the material blocking plate 28 to move towards the left side of the cylinder body 11, so that the asphalt concrete inside the cylinder body 11 can be discharged along the discharge port 14. Then, the asphalt concrete falls onto the upper part of the track 15. The vibration motor 17 drives the track 15 to perform reciprocating up and down vibration through the support plate 18 connected to the track 15 by means of the telescopic function of the telescopic frame 16, so that the asphalt concrete inside the track 15 can move along the track 15 to the position of the discharge hopper 19, and then falls through the discharge hopper 19 into the storage container. The telescopic frame 16 controls the movable block 26 to apply an extrusion force to the elastic block 25 inside the fixed block 24 through the connecting rod, thereby generating the telescopic movement of the telescopic frame 16. The soot or volatiles generated inside the cylinder body 11 are sucked out through the gas collecting hopper 30 with negative pressure suction, and then are transported through the smoke pipe 31 to the flue gas purification equipment for harmless treatment.

[0030] It can be understood that this application is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of this application, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of this application, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this application. Therefore, this application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by this application.

Claims

1. An asphalt concrete mixing device, comprising a frame (3), characterized in that: A mixing assembly (2) for mixing asphalt and sand and gravel by coaxial stirring is arranged on the upper part of the frame (3); a discharge assembly (4) for evenly discharging materials by vibration is arranged below the mixing assembly (2); a discharge assembly (6) for controlling whether the mixing assembly (2) can discharge materials is also added directly below the mixing assembly (2); and a smoke exhaust assembly (1) for performing smoke treatment is also added to the rear of the mixing assembly (2).

2. The asphalt concrete mixing equipment according to claim 1, characterized in that: The mixing assembly (2) comprises a cylinder (11) arranged directly above the frame (3); a paddle (10) for mixing asphalt and gravel is arranged inside the cylinder (11); a mixing motor (7) for providing a power source is arranged on the left side of the outer side of the cylinder (11); the mixing motor (7) and the paddle (10) are connected via a shaft (8) penetrating the cylinder (11); a cover plate (9) connected to the cylinder (11) is arranged on the top; and a discharge port (14) for discharging asphalt concrete is arranged directly below the bottom of the cylinder (11).

3. The asphalt concrete mixing equipment according to claim 2, characterized in that: The blades (10) are arranged in a spiral shape on the surface of the shaft (8), and the blades (10) are divided into an outer blade (13) and an inner blade (12). The surface of the outer blade (13) is provided with a weight-reducing hole that does not affect the bending strength during stirring.

4. The asphalt concrete mixing equipment according to claim 2, characterized in that: The discharge assembly (4) comprises a track (15) arranged directly below the cylinder (11) for receiving asphalt concrete, a support plate (18) for supporting the track (15) being symmetrically arranged at the lower part of the track (15), a vibration motor (17) for driving the track (15) to move up and down being arranged outside the support plate (18), a plurality of groups of telescopic frames (16) being symmetrically arranged at the lower part of the track (15), and a discharge hopper (19) for receiving asphalt concrete being also arranged at the right end of the track (15).

5. The asphalt concrete mixing equipment according to claim 4, characterized in that: The telescopic frame (16) is composed of a supporting block, a connecting block (22) and a connecting plate (21). The supporting block is divided into an upper supporting block (20) and a lower supporting block (23). The upper supporting block (20) is fixed to the lower part of the track (15), and the lower supporting block (23) is fixed to the upper part of the frame (3). The upper supporting block (20) and the lower supporting block (23) are respectively connected to a connecting plate (21) that can rotate around them. The connecting plates (21) are connected by a connecting block (22) arranged on one side thereof.

6. The asphalt concrete mixing equipment according to claim 5, characterized in that: The support block is divided into a fixed block (24), a movable block (26) and an elastic block (25). The movable block (26) is placed at a central position inside the fixed block (24) and is fixedly connected to the connecting plate (21). A plurality of elastic blocks (25) are arranged around the movable block (26) and between the fixed block (24).

7. The asphalt concrete mixing equipment according to claim 4, characterized in that: A cover plate (5) is also provided on the right side of the frame (3) for shielding the track (15) to prevent foreign matter from falling into the track (15) during the production process and being mixed with the asphalt concrete.

8. The asphalt concrete mixing equipment according to claim 4, characterized in that: The telescopic frame (16) is a spring arranged between the frame (3) and the track (15).

9. The asphalt concrete mixing equipment according to claim 2, characterized in that: The discharge assembly (6) comprises a driving cylinder (27) arranged on the left side of the cylinder (11), and a material shielding plate (28) is arranged below the discharge port (14), and the material shielding plate (28) is connected to the driving cylinder (27) and driven thereby.

10. The asphalt concrete mixing equipment according to claim 2, characterized in that: The smoke exhaust assembly (1) comprises an air collecting hopper (30) arranged at the rear of the cylinder (11), fixing plates (29) are arranged on both sides of the air collecting hopper (30), and a smoke pipe (31) for connecting to the air collecting hopper (30) is arranged at the bottom of the air collecting hopper (30).

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