An asphalt mixing plant drying drum blade structure and drying drum

Abstract

The utility model discloses an asphalt mixing station drying barrel blade structure and drying barrel, including the multiple bending plate blades of installing in the drying barrel main part inner wall, the bending plate blade includes the fixed end, extension end and the bending end of integral type structure, still include the mounting structure of setting between the bending plate blade and the drying barrel main part, the mounting structure includes two mounting seats of the symmetry fixed in the drying barrel main part inner wall, the blade of the asphalt mixing station drying barrel is changed to the bending plate from the straight board through this application, makes the aggregate in the process of being pushed by the blade with the rotating of the rolling drum, can produce more complex motion track, including more tumbling and throwing action, the design not only increases the contact area of aggregate and hot flue gas, prolongs the contact time, thereby improves the heat exchange efficiency, also promotes the uniform distribution of aggregate, ensures that every part aggregate can get sufficient and moderate drying, significantly speeds up the drying energy efficiency of stone, improves the energy utilization rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of asphalt drying drums, specifically relating to a blade structure and a drying drum for an asphalt mixing plant. Background Technology

[0002] In the field of road construction and maintenance, asphalt mixing plants are the core equipment for producing high-quality asphalt mixtures, and their performance directly affects the quality and durability of asphalt pavements. Among them, the drying drum, as one of the key components of the asphalt mixing plant, undertakes the important task of heating, drying and initially mixing aggregates (such as gravel). In the 2000-type asphalt mixing plant, the design and optimization of the drying drum plays a vital role in improving overall production efficiency, reducing energy consumption and ensuring the quality of the mixture.

[0003] Traditional asphalt mixing plant drying drums typically employ a straight-plate blade structure. While this design met basic drying requirements in early applications, its limitations have become increasingly apparent with rising demands for production efficiency, energy utilization, and environmental protection. Specifically, the straight-plate blades, while propelling the aggregate along the drum's axial direction, struggle to achieve sufficient tumbling and uniform distribution of the aggregate. This results in some aggregate remaining in the drum for too long and being overheated, while other aggregate fails to dry sufficiently, affecting the consistency of drying performance and overall energy efficiency. Furthermore, the blades of traditional drying drums are inefficient to assemble and disassemble, making subsequent maintenance difficult. Therefore, this invention proposes a blade structure for an asphalt mixing plant drying drum and a drying drum itself. Utility Model Content

[0004] The purpose of this utility model is to provide a blade structure for the drying drum of an asphalt mixing plant and a drying drum itself, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blade structure for an asphalt mixing plant drying drum, comprising multiple curved blades installed on the inner wall of the drying drum body, wherein the curved blades include a fixed end, an extension end, and a bent end of an integral structure;

[0006] It also includes an installation structure disposed between the curved blade and the main body of the drying barrel. The installation structure includes two mounting seats symmetrically fixed to the inner wall of the main body of the drying barrel, a rectangular slot opened on the inner side of the mounting seat for the fixed end to be inserted, and mounting bolts and fixing nuts disposed between the fixed end and the mounting seat.

[0007] Preferably, both sides of the mounting base are provided with bolt holes for mounting bolts to pass through, and the bolt holes are connected to the rectangular slot.

[0008] Preferably, the surface of the fixed end is provided with a second bolt hole for the installation bolt to pass through, and the position of the second bolt hole corresponds to the first bolt hole.

[0009] Preferably, it also includes an auxiliary positioning structure, which is disposed between the fixed end and the rectangular slot.

[0010] Preferably, the auxiliary positioning structure includes a T-shaped movable groove formed on the inner walls of both sides of the rectangular slot, a T-shaped elastic card set in the T-shaped movable groove with its arc-shaped end extending to the inner side of the rectangular slot, and positioning slots formed on both sides of the fixed end for the ends of the T-shaped elastic cards to be inserted into.

[0011] Preferably, space is left between the two ends of the T-shaped elastic card and the inner wall of the T-shaped movable groove for subsequent elastic deformation.

[0012] Preferably, the positioning slot has a rectangular cross-section, and the position of the positioning slot corresponds to the arc-shaped end of the T-shaped elastic card.

[0013] A drying drum for an asphalt mixing plant, comprising the aforementioned blade structure, includes a drying drum body, and the inner wall of the drying drum body is equipped with multiple curved blades.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By changing the blades of the drying drum of the asphalt mixing plant from straight plates to curved plates, the aggregate can generate a more complex motion trajectory as it rotates with the drum and is pushed by the blades, including more tumbling and throwing actions. This design not only increases the contact area between the aggregate and the hot flue gas and prolongs the contact time, thereby improving the heat exchange efficiency, but also promotes the uniform distribution of the aggregate, ensuring that each part of the aggregate can be fully and appropriately dried, significantly accelerating the drying efficiency of the stone, improving energy utilization, reducing production costs, and reducing the emission of high-temperature exhaust gas, which meets environmental protection requirements. In addition, with the installation structure, it also has the characteristics of easy disassembly and maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0017] Figure 3 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0018] Figure 4 This is a cross-sectional view of the connection between the fixed end and the mounting base of this utility model;

[0019] Figure 5 This utility model Figure 4 A magnified view of a portion of region C in the middle;

[0020] In the diagram: 1. Curved blade; 11. Fixed end; 111. Bolt hole two; 12. Extension end; 13. Bending end; 2. Drying barrel body; 3. Mounting base; 31. Rectangular slot; 32. Bolt hole one; 41. Mounting bolt; 42. Fixing nut; 5. Auxiliary positioning structure; 51. T-shaped movable groove; 52. T-shaped elastic clip; 53. Positioning slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figures 1 to 4 This is the first embodiment of the present utility model, which provides the following technical solution: a blade structure for a drying drum of an asphalt mixing plant, including multiple curved blades 1 installed on the inner wall of the drying drum body 2. The curved blade 1 includes a fixed end 11, an extension end 12 and a bent end 13 of an integral structure. The design of the curved blade structure enables the aggregate to generate a more complex motion trajectory, including more tumbling and throwing actions, as it rotates with the drum and is pushed by the curved blades 1. This design not only increases the contact area between the aggregate and the hot flue gas and prolongs the contact time, thereby improving the heat exchange efficiency, but also promotes the uniform distribution of the aggregate.

[0024] It also includes an installation structure set between the curved blade 1 and the drying barrel body 2. The installation structure includes two mounting seats 3 symmetrically welded and fixed to the inner wall of the drying barrel body 2, a rectangular slot 31 opened on the inner side of the mounting seat 3 for the fixed end 11 to be inserted, and mounting bolts 41 and fixing nuts 42 set between the fixed end 11 and the mounting seat 3. In actual installation, the operator can insert the fixed end 11 between the two mounting seats 3, so that the edge of the fixed end 11 is inserted into the inner side of the rectangular slot 31, and then tighten it with the fixing nut 42 after passing through the mounting bolt 41. This can achieve stable fixing of the curved blade 1 on the inner wall of the drying barrel body 2. In subsequent disassembly and maintenance, it is only necessary to remove the mounting bolts 41 and the fixing nuts 42 to directly pull the curved blade 1 out from between the two mounting seats 3, which is convenient for subsequent disassembly and maintenance.

[0025] In this embodiment, preferably, bolt holes 32 are provided on both sides of the mounting base 3 for the mounting bolts 41 to pass through, and the bolt holes 32 are connected to the rectangular slot 31.

[0026] In this embodiment, preferably, the surface of the fixed end 11 is provided with a bolt hole 2 111 through which the mounting bolt 41 passes, and the position of the bolt hole 2 111 corresponds to the bolt hole 1 32, so that the mounting bolt 41 can pass smoothly through the bolt hole 1 32 and the bolt hole 2 111.

[0027] An asphalt mixing plant drying drum with the aforementioned blade structure includes a drying drum body 2, and multiple curved blades 1 are installed on the inner wall of the drying drum body 2. As a mature piece of equipment in the prior art, the structure and working principle of the asphalt mixing plant drying drum will not be described in detail here.

[0028] Example 2

[0029] Please see Figures 1 to 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but with the difference that it also includes an auxiliary positioning structure 5, which is disposed between the fixed end 11 and the rectangular slot 31.

[0030] In this embodiment, preferably, the auxiliary positioning structure 5 includes a T-shaped movable groove 51 formed on the inner walls of both sides of the rectangular slot 31, a T-shaped elastic card 52 set in the T-shaped movable groove 51 with its arc-shaped end extending into the inner side of the rectangular slot 31, and a positioning slot 53 formed on both sides of the fixed end 11 for the end of the T-shaped elastic card 52 to be inserted into. When the arc-shaped end of the T-shaped elastic card 52 is squeezed by the fixed end 11 when it is inserted into the inner side of the rectangular slot 31, it will undergo elastic deformation. When the fixed end 11 is successfully inserted into the rectangular slot 31, the arc-shaped end of the T-shaped elastic card 52 will be inserted into the positioning slot 53, thereby achieving auxiliary positioning of the fixed end 11. At this time, the bolt hole 1 32 and the bolt hole 2 111 are aligned, which makes it convenient for the operator to install the mounting bolt 41 and the fixing nut 42, improving the ease of installation and playing the role of auxiliary positioning.

[0031] In this embodiment, preferably, space is left between the two ends of the T-shaped elastic card 52 and the inner wall of the T-shaped movable groove 51 for subsequent elastic deformation, so that the T-shaped elastic card 52 has sufficient deformation space when squeezed by the fixed end 11.

[0032] In this embodiment, preferably, the cross-section of the positioning slot 53 is rectangular, and the position of the positioning slot 53 corresponds to the arc-shaped end of the T-shaped elastic card 52.

[0033] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blade structure for a drying drum in an asphalt mixing plant, characterized in that: It includes multiple curved blades (1) installed on the inner wall of the drying barrel body (2), the curved blades (1) including a fixed end (11), an extension end (12) and a bent end (13) of an integral structure; It also includes an installation structure between the curved blade (1) and the drying barrel body (2), the installation structure including two mounting seats (3) symmetrically fixed to the inner wall of the drying barrel body (2), a rectangular slot (31) opened on the inner side of the mounting seat (3) for the fixed end (11) to be inserted, and mounting bolts (41) and fixing nuts (42) between the fixed end (11) and the mounting seat (3).

2. The blade structure of the drying drum of an asphalt mixing plant according to claim 1, characterized in that: Both sides of the mounting base (3) are provided with bolt holes (32) for mounting bolts (41) to pass through, and the bolt holes (32) are connected to the rectangular slot (31).

3. The blade structure of the drying drum of an asphalt mixing plant according to claim 2, characterized in that: The surface of the fixed end (11) is provided with a bolt hole two (111) through which the mounting bolt (41) passes, and the position of the bolt hole two (111) corresponds to the bolt hole one (32).

4. The blade structure of the drying drum of an asphalt mixing plant according to claim 1, characterized in that: It also includes an auxiliary positioning structure (5), which is disposed between the fixed end (11) and the rectangular slot (31).

5. The blade structure of the drying drum of an asphalt mixing plant according to claim 4, characterized in that: The auxiliary positioning structure (5) includes a T-shaped movable groove (51) opened on the inner walls of both sides of the rectangular slot (31), a T-shaped elastic card (52) set in the T-shaped movable groove (51) with its arc end extending to the inner side of the rectangular slot (31), and a positioning slot (53) opened on both sides of the fixed end (11) for the end of the T-shaped elastic card (52) to be inserted.

6. The blade structure of the drying drum of an asphalt mixing plant according to claim 5, characterized in that: The two ends of the T-shaped elastic card (52) are left with space between them and the inner wall of the T-shaped movable groove (51) for subsequent elastic deformation.

7. The blade structure of the drying drum of an asphalt mixing plant according to claim 5, characterized in that: The positioning slot (53) has a rectangular cross-section, and the position of the positioning slot (53) corresponds to the arc end of the T-shaped elastic card (52).

8. A drying drum for an asphalt mixing plant comprising the blade structure as described in any one of claims 1-7, characterized in that: It includes a drying barrel body (2), and the inner wall of the drying barrel body (2) is equipped with multiple curved blades (1).

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