Regeneration flue gas treatment device of asphalt mixture stirring equipment

Abstract

The utility model relates to the technical field of flue gas treatment equipment, in particular to a regenerated flue gas treatment device of asphalt mixture stirring equipment. Comprising a regeneration roller end seat, a small circulating flue arranged on the regeneration roller end seat, a dust remover, a large circulating flue arranged on the dust remover, a combustor hearth arranged at the front end of the dust remover at intervals, an air inlet formed in the top of the combustor hearth, a circulating fan arranged at the position of the air inlet in the combustor hearth, and a circulating fan connected with the small circulating flue, the dust remover and the combustor hearth at intervals, according to different production working conditions, flue gas of the small circulating flue can be selected for air inlet of the circulating fan, and flue gas of the large circulating flue or flue gas of the large and small circulating flues can be selected for air inlet in proportion, so that the problem that a flue gas circulating system usually directly sucks air purified by a dust remover into a hearth of a combustor, and the flue gas of the large and small circulating flues cannot be directly sucked into the hearth of the combustor is solved. Or part of smoke of the regeneration roller end seat is sucked into the hearth of the combustor, so that balance between energy consumption and stable operation of equipment is difficult to obtain.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas treatment equipment, and in particular to a regenerated flue gas treatment device for asphalt mixture mixing equipment. Background Technology

[0002] Currently, asphalt recycling flue gas recirculation systems on the market typically draw air directly from the dust collector into the burner furnace, or draw some of the flue gas from the end of the recycling drum into the burner furnace, making it difficult to achieve a balance between energy consumption and stable equipment operation. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a regeneration flue gas treatment device for asphalt mixture mixing equipment, which solves the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a regenerated flue gas treatment device for asphalt mixture mixing equipment, comprising a regenerated drum end seat, a small circulating flue on the regenerated drum end seat, a dust collector at the rear end of the regenerated drum end seat, a large circulating flue on the dust collector, a burner furnace spaced at the front end of the dust collector, an air inlet at the top of the burner furnace, a circulating fan at the air inlet position on the burner furnace, and flue tee joints respectively connected to the small circulating flue, the large circulating flue and the circulating fan.

[0005] Furthermore, a first air volume regulating valve is provided at the connection between the dust collector and the large circulating flue.

[0006] Furthermore, a second air volume regulating valve is provided on the end seat of the regeneration drum.

[0007] Furthermore, the flue tee joint and the bottom of the circulating fan are equipped with maintenance doors.

[0008] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0009] This asphalt mixing plant's regenerated flue gas treatment system, through its configuration, allows for the selection of flue gas from the small circulating flue, the large circulating flue, or a combination of both, depending on the production conditions. This achieves a balance between burner furnace operation and energy conservation, solving the problem that flue gas circulation systems typically draw air directly from the dust collector into the burner furnace, or draw some of the regenerated drum end-seat flue gas into the burner furnace, making it difficult to achieve a balance between energy consumption and stable equipment operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a front view schematic diagram of the flue tee connector structure of this utility model;

[0012] Figure 3 This is a top view schematic diagram of the flue tee connector structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the flue tee connector structure of this utility model;

[0014] Figure 5 This is a schematic diagram of the internal structure of the flue tee connector of this utility model. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] refer to Figures 1 to 5 This embodiment provides a regeneration flue gas treatment device for an asphalt mixture mixing equipment, including a regeneration drum end seat 1, a small circulating flue 2 disposed on the regeneration drum end seat 1, a dust collector 3 disposed at the rear end of the regeneration drum end seat 1, a large circulating flue 4 disposed on the dust collector 3, a burner furnace 5 disposed at intervals at the front end of the dust collector 3, an air inlet 6 disposed at the top of the burner furnace 5, a circulating fan 7 disposed at the air inlet 6 on the burner furnace 5, and flue tee joints 8 that are respectively connected to the small circulating flue 2, the large circulating flue 4 and the circulating fan 7. The dust collector 3 can be a gravity dust collector or a bag dust collector. The bag dust collector is preferably a pulse dust collector, which are all existing technologies and will not be described in detail here.

[0017] In use, the end seat 1 of the recycling drum and the furnace 5 of the burner are respectively connected to the external drying drum. The external drying drum can refer to the asphalt recycling system disclosed by the applicant in Chinese Patent No. CN208472514U. The above-mentioned equipment is a relatively conventional mechanism in the field and will not be described in detail here.

[0018] The flue gas generated in the burner furnace 5 passes through the external drying drum to the regeneration drum end seat 1. The regeneration drum end seat 1 transports the flue gas to the dust collector 3. The purified flue gas is transported through the large circulation flue 4 to the flue tee joint 8. The regeneration drum end seat 1 transports part of the flue gas through the small circulation flue 2 to the flue tee joint 8. The gas in the flue tee joint 8 is drawn into the burner furnace 5 by the circulating fan 7.

[0019] Depending on the different production conditions, the air intake of the circulating fan 7 can be selected from the flue gas of the small circulating flue 2, the flue gas of the large circulating flue 4, or the flue gas of the small and large circulating flues in proportion, so as to achieve a balance between the working conditions of the burner furnace 5 and energy saving and consumption reduction.

[0020] A first air volume regulating valve 9 is provided at the connection between the dust collector 3 and the large circulating flue 4. The first air volume regulating valve can control the air volume entering the dust collector and the large circulating flue.

[0021] The regeneration drum end seat 1 is provided with a second air volume regulating valve 10, which can control the air volume entering the small circulation flue from the regeneration drum end seat.

[0022] The bottom of the flue tee joint 8 and the circulating fan 7 is equipped with a maintenance door (not shown), which is a detachable plate that facilitates opening for repair and maintenance.

[0023] The flue tee connector 8 includes a housing 81, a first inlet 82 located at the front end of the housing 81, an outlet 83 located at the rear end of the housing 81, a second inlet 84 located on one side of the housing 81, a first closing mechanism 85 located at the first inlet 82 on the housing 81, and a second closing mechanism 86 located at the second inlet 84 on the housing 81. The first closing mechanism 85 and the second closing mechanism 86 have the same structure. The first closing mechanism 85 includes a first rotating shaft 851 rotatably located on the housing 81 at the first inlet 82, a second rotating shaft 852 rotatably located on the housing 81 at the first inlet 82 and spaced apart from the first rotating shaft 851, and a first... The system includes a cover plate 853, a second cover plate 854 located outside the second rotating shaft 852, a first connecting rod 855 located at the top of the first rotating shaft 851, a second connecting rod 856 located at the top of the second rotating shaft 852, a third connecting rod 857 rotatably located between the first connecting rod 855 and the second connecting rod 856, and a motor 858 for driving the first rotating shaft 851 to rotate. Multiple spaced springs 87 are provided on one side of the first cover plate 853 and the second cover plate 854. A perforated plate 88 is provided on the side of the springs 87 away from the first cover plate 853 and the second cover plate 854. A recessed portion 89, narrowing from top to bottom and from both sides towards the center, is provided below the perforated plate 88 in the housing 81. An inner hole 80 is provided in the center of the recessed portion 89.

[0024] During operation, the first and second inlets are connected to the small and large circulating flues, respectively, and the air outlet is connected to the circulating fan. When proportional air intake is required, the rotation angle of the first and second cover plates within the first and second closing mechanisms is controlled to regulate the air intake volume of the small and large circulating flues. This allows for adjustment of the air intake volume. Simultaneously, when the first or second inlet needs to be closed, the airtightness is further improved. To close or open the first or second inlet, the motor drives the first or second rotating shaft to rotate. After the first rotating shaft rotates, the first connecting rod at the top rotates. Since the first and second connecting rods are parallel, during the rotation of the first connecting rod, the second connecting rod rotates synchronously via the third connecting rod. The second rotating shaft within the second connecting rod rotates synchronously with the first rotating shaft, thus closing the first inlet. After the motor controls the first rotating shaft to rotate 90 degrees, ventilation of the first inlet is achieved.

[0025] Because the flue gas in the small circulation flue contains a lot of particulate matter, it is easy to cause ash accumulation failure in the closing mechanism. By setting up a perforated plate, when the flue gas is blocked by the first and second cover plates in the closed state, some particulate matter is adsorbed on the perforated plate. As the first and second cover plates rotate and open next time, the perforated plate vibrates under the action of the spring, shaking the particulate matter on the perforated plate into the recessed part. The particulate matter is not easy to accumulate on the first and second cover plates. In addition, during the rotation of the first and second cover plates, some particulate matter can also be pushed into the recessed part. The inner hole can be connected to the external collection pipe to avoid ash accumulation in the first or second closing mechanism, which could lead to failure.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A regeneration flue gas treatment device for asphalt mixture mixing equipment, characterized in that, It includes a regeneration drum end seat (1), a small circulating flue (2) on the regeneration drum end seat (1), a dust collector (3) at the rear end of the regeneration drum end seat (1), a large circulating flue (4) on the dust collector (3), a burner furnace (5) spaced at the front end of the dust collector (3), an air inlet (6) at the top of the burner furnace (5), a circulating fan (7) at the air inlet (6) on the burner furnace (5), and a flue tee joint (8) that is connected to the small circulating flue (2), the large circulating flue (4) and the circulating fan (7) respectively.

2. The asphalt mixture mixing equipment regeneration flue gas treatment device according to claim 1, characterized in that: The dust collector (3) is connected to the large circulating flue (4) with a first air volume regulating valve (9).

3. The asphalt mixture mixing equipment regeneration flue gas treatment device according to claim 1, characterized in that: The regeneration drum end seat (1) is provided with a second air volume regulating valve (10).

4. The asphalt mixture mixing equipment regeneration flue gas treatment device according to claim 1, characterized in that: The bottom of the flue tee joint (8) and the circulating fan (7) is equipped with maintenance doors.

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