Asphalt mixture mixing device

Abstract

The utility model provides an asphalt mixture mixing device which comprises a tank body, a stirring device and a mixing device, wherein the stirring device and the mixing device are horizontally pivoted in the tank body, and the stirring device and the mixing device are meshed and intersected and rotate in opposite directions. The premixed mixture is promoted to perform circular motion in the tank body and generate radial and axial motion under the stirring action of the stirring device and the mixing device, so that convection current is generated from the two ends of the tank body to the middle part of the tank body, and multi-dimensional mixing motion is realized; the arc-shaped end surface is arranged at the bottom of the tank body, and the stirring device is propped against the arc-shaped end surface at the bottom of the tank body, so that dead angles between the inner walls of the device are eliminated, a premixed mixture at the bottom is prevented from sinking to the bottom, and sufficient and uniform mixing of the premixed mixture is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixture processing, in particular to an asphalt mixture mixing device. Background Art

[0002] Asphalt mixture is a composite material mainly composed of asphalt, coarse aggregate, fine aggregate, and mineral powder. Some also add polymers and wood cellulose. Asphalt mixtures with different structures and mechanical properties formed by mixing these materials with different qualities and quantities need to be fully stirred during the processing. However, the existing powder mixing devices often use a stirring shaft and stirring blades to stir and mix the asphalt mixture. This structure can only achieve local mixing, making it difficult to ensure the uniform distribution of the powder throughout the container, and there are also stirring dead corners. For example, a dry mortar mixing device provided by a Chinese authorized patent with the publication number CN214982071U: The device includes a mixing bin. The bottom part of the mixing bin is arranged in a funnel-shaped structure. A plurality of support frames evenly distributed in a ring are fixedly installed at the bottom of the mixing bin. A matching annular plate is arranged inside the mixing bin, and the annular plate is movably connected to the mixing bin. A feed pipe is fixedly communicated at the center of the annular plate. The feed pipe movably penetrates through the top of the mixing bin. A worm gear is fixedly sleeved on the outer wall of the feed pipe. A driving motor is fixedly connected to the outer side wall of the mixing bin through a mounting plate. The output end of the driving motor is fixedly connected with a worm. The worm rotates through the side wall of the mixing bin and extends into its inner cavity. Through the analysis of the structural characteristics, it is not difficult to find that when this existing technology is in use, after various raw materials are poured into the inside of the mixing bin for stirring, the raw materials at the bottom are prone to sedimentation. During mixing, the raw materials in the sedimentation part cannot be fully mixed with the raw materials in the upper part, thus directly affecting the overall mixing uniformity. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems that the existing asphalt mixture mixing device has difficulty in ensuring the mixing uniformity, the raw materials are prone to sedimentation, and there are stirring dead corners, and to provide an asphalt mixture mixing device that can fully mix the powder.

[0004] To solve the above technical problems, the utility model provides an asphalt mixture mixing device. The asphalt mixture mixing device includes a tank body provided with a feed inlet and a discharge outlet, and a stirring device and a mixing device horizontally pivoted in the tank body. The mixing device includes mixing blades connected to a first rotating shaft roller, and a first driving motor for driving the first rotating shaft roller to rotate;

[0005] The stirring device includes stirring blades connected to a second rotating shaft roller, and a second driving motor for driving the second rotating shaft roller to rotate. The stirring blades mesh and intersect with the mixing blades and abut against the arc-shaped end surface at the bottom of the tank body;

[0006] In the mixing state, the first rotating shaft roller and the second rotating shaft roller rotate towards each other, driving the premixed mixture in the tank to convect towards the middle of the tank body.

[0007] In a preferred embodiment: the arc-shaped end face is a quarter circular arc plate, and its inner arc surface intersects tangentially with the stirring blades.

[0008] In a preferred embodiment: in the mixing state, the first rotating shaft roller rotates counterclockwise along its central axis, and the second rotating shaft roller rotates clockwise along its central axis.

[0009] In a preferred embodiment: there are no less than 4 stirring blades, which are arranged through along the length direction of the second rotating shaft roller.

[0010] In a preferred embodiment: the mixing blades are composed of two sets of racks with a predetermined height difference and arranged staggeredly, and the radial included angle between adjacent racks is not greater than 45 degrees.

[0011] In a preferred embodiment: the feed inlet is arranged above the mixing device, and the premixed mixture enters the tank body along the feed inlet and is discharged along the discharge outlet under the combined agitation of the mixing device and the stirring device.

[0012] In a preferred embodiment: it further includes a conveyor belt arranged below the discharge outlet along the length direction of the tank body.

[0013] Compared with the prior art, the technical solution of the present utility model has the following beneficial effects:

[0014] The present utility model provides an asphalt mixture mixing device. By horizontally pivoting a stirring device and a mixing device that are meshed and intersecting and rotate towards each other in the tank body, while the premixed mixture performs circular motion in the tank body, through the stirring action of the stirring device and the mixing device, radial and axial motions are generated simultaneously, and the mixture convects from both ends of the tank body towards the middle of the tank body, thereby realizing multi-dimensional mixing motion; and an arc-shaped end face is arranged at the bottom of the tank body, and the stirring device is abutted against the arc-shaped end face at the bottom of the tank body, eliminating the dead angle between the inner walls of the device, avoiding the premixed mixture at the bottom from settling, and ensuring the full and uniform mixing of the premixed mixture. Description of the Drawings

[0015] Figure 1 It is the mixing schematic diagram of the device of the present utility model;

[0016] Figure 2 It is the discharge schematic diagram of the device of the present utility model;

[0017] Figure 3 It is the schematic diagram of the stirring blades of the present utility model;

[0018] Figure 4 It is the schematic diagram of the mixing blades of the present utility model. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a wall-mounted connection, a detachable connection, or an integral connection, can be a mechanical connection, an electrical connection, can be directly connected, or can be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Referring to Figures 1-4 , this embodiment provides an asphalt mixture mixing device. The structural composition of the device includes a tank body 1 provided with a feed inlet and a discharge outlet. Inside the tank body 1, a stirring device 12 and a mixing device 11 are horizontally and rotatably connected. The feed inlet of the tank body 1 is opened above the mixing device 11. The premixed mixture enters the tank body 1 along the feed inlet and forms a circular motion from bottom to top under the combined agitation of the mixing device 11 and the stirring device 12. At the same time, due to the radial and axial movements generated by the opposite rotation of the stirring device 12 and the mixing device 11 in the mixing state, the premixed mixture can be driven to gather from both ends of the tank body towards the middle of the tank body and form an oncoming circulation flow, further realizing multi-dimensional mixing and agitation.

[0023] In terms of structural features, the mixing device 11 includes mixing blades 112 connected to the first rotating shaft roller 111 and a first driving motor 113 for driving the first rotating shaft roller 111 to rotate. The mixing blades 112 are composed of two groups of racks with a predetermined height difference and arranged staggeredly, and the radial included angle between adjacent racks is not greater than 45 degrees. Similarly, the stirring device 12 includes stirring blades 122 connected to the second rotating shaft roller 121 and a second driving motor 123 for driving the second rotating shaft roller 121 to rotate. The difference between the stirring device 12 and the mixing device 11 in appearance lies in the blade structure, which is specifically reflected in that each of the stirring blades 122 is arranged through along the length direction of the second rotating shaft roller 121 and the number of them is not less than 4. Since the stirring blades 122 and the mixing blades 112 mesh and intersect, it can well ensure the continuity of the premixed material a during the mixing process, and the stirring blades 122 abut against the arc-shaped end face 10 at the bottom of the tank body 1. The arc-shaped end face 10 is a quarter circular arc plate, and its inner arc surface intersects tangentially with the stirring blades 122, which can be used to eliminate the dead corners between the inner walls of the device, avoid the sedimentation of the premixed mixture at this position, and ensure the full and uniform mixing of the premixed mixture.

[0024] When in the mixing state, the discharge port is closed and the feed port is opened. After all the premixed mixture a enters the tank body 1, the feed port is closed. The stirring device 12 and the mixing device 11 are started simultaneously. The premixed mixture is gathered below the stirring device 12 under the drive of the mixing device 11 in the clockwise rotation direction. The stirring device 12 drives the stirring blades 122 connected to the second rotating shaft roller 121 to rotate clockwise with the axis center of the second rotating shaft roller 121 as the rotation axis. The clockwise rotation of the stirring blades 122 drives the premixed mixture gathered below it to move from bottom to top and be thrown above the mixing device 11 under the inertial force generated by the rotational potential energy. The mixing device 11 rotates towards the stirring device 12 direction and continues to gather the premixed mixture back to below the stirring device 12. Through the cooperation of the stirring device 12 and the mixing device 11, the premixed mixture flows back from both ends of the tank body to the middle of the tank body, maximizing the multi-dimensional mixing movement of the materials in the tank body.

[0025] After mixing, the discharge port located at the rear side of the mixing device 11 is opened. The second rotating shaft roller 121 on the stirring device 12 starts to rotate counterclockwise under the drive of the second driving motor 123, and cooperates with the mixing device 11 to convey the mixture deposited at the bottom of the tank body 1 along the discharge port direction to the conveyor belt arranged along the length direction of the tank body 1 and located below the discharge port.

[0026] As described above, it is only the preferred specific embodiment of the present utility model. However, the design concept of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model who makes non-substantive modifications to the present utility model using this concept shall fall within the scope of infringement of the protection scope of the present utility model.

Claims

1. An asphalt mixture mixing device, comprising a tank body (1) provided with a feed inlet and a discharge outlet, and a stirring device (12) and a mixing device (11) horizontally pivoted in the tank body (1), characterized in that: The mixing device (11) comprises a mixing blade (112) connected to a first rotating shaft roller (111), and a first driving motor (113) for driving the first rotating shaft roller (111) to rotate; The stirring device (12) comprises a stirring blade (122) connected to a second rotating shaft roller (121), and a second driving motor (123) for driving the second rotating shaft roller (121) to rotate, wherein the stirring blade (122) meshes with and intersects with the mixing blade (112) and abuts against the arc-shaped end surface of the bottom of the tank body (1); In the mixing state, the first rotating shaft roller (111) and the second rotating shaft roller (121) rotate towards each other and drive the premixed material in the tank to convect toward the middle of the tank body.

2. An asphalt mixture mixing device according to claim 1, characterized in that: The arc-shaped end surface is a quarter-circular arc plate, and its inner arc surface intersects tangentially with the stirring blade (122).

3. The asphalt mixture mixing device according to claim 1, characterized in that: In the mixing state, the first rotating shaft roller (111) rotates counterclockwise along its central axis, and the second rotating shaft roller (121) rotates clockwise along its central axis.

4. The asphalt mixture mixing device according to claim 1, characterized in that: The number of the stirring blades (122) is no less than 4 and they are arranged through the length direction of the second rotating shaft roller (121).

5. The asphalt mixture mixing device according to claim 1, characterized in that: The mixing blades (112) are composed of two groups of racks with a predetermined height difference and arranged alternately, and the radial angle between adjacent racks is no greater than 45 degrees.

6. The asphalt mixture mixing device according to claim 1, characterized in that: The feed inlet is arranged above the mixing device (11), and the premixed material enters the tank body (1) through the feed inlet and is discharged through the discharge port under the mixing disturbance of the mixing device (11) and the stirring device (12).

7. The asphalt mixture mixing device according to claim 1, characterized in that: It also comprises a conveyor belt arranged below the discharge port along the length direction of the tank body (1).

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