An asphalt plant aggregate heating device

Abstract

The utility model discloses a kind of asphalt mixing station aggregate heating devices, belong to aggregate heating technical field, including coal grinding and powder spraying machine, coal powder transmission mechanism, coal powder burner and drying cylinder, coal powder transmission mechanism is set between coal grinding and powder spraying machine and coal powder burner, coal powder burner output end inserts drying cylinder inside and with drying cylinder is connected;Coal powder transmission mechanism includes first connecting hose, powder conveying fan and second connecting hose, powder conveying fan input end is connected with first connecting hose, powder conveying fan output end is connected with second connecting hose, first connecting hose other end is connected with coal grinding and powder spraying machine output end, second connecting hose other end is connected with coal powder burner input end.The utility model uses above-mentioned a kind of asphalt mixing station aggregate heating device, effectively reduces energy consumption, saves construction cost, improves engineering quality.

Description

Technical Field

[0001] This utility model relates to the field of aggregate heating technology, and in particular to an aggregate heating device for asphalt mixing plants. Background Technology

[0002] Asphalt pavement is a core pavement type for highways, national and provincial roads, and municipal roads. Its construction quality directly affects road lifespan, traffic safety, and maintenance costs. Precise heating of aggregates ensures uniform mixing and stable bonding between asphalt and aggregates, ultimately determining the core properties of the asphalt pavement, such as strength and durability. Therefore, the fuel selection, heating efficiency, and operating costs of the heating system become key factors influencing the overall quality and economic benefits of the project. However, burning heavy oil using traditional combustion methods easily contaminates the aggregates, leading to poor bonding between the aggregates and asphalt, thus affecting project quality. Utility Model Content

[0003] The purpose of this invention is to provide an aggregate heating device for asphalt mixing plants, which effectively reduces energy consumption, saves construction costs, and improves project quality.

[0004] To achieve the above objectives, this utility model provides an aggregate heating device for an asphalt mixing plant, including a coal pulverizer, a coal powder conveying mechanism, a coal powder burner, and a drying cylinder. The coal powder conveying mechanism is located between the coal pulverizer and the coal powder burner, and the output end of the coal powder burner is inserted into the drying cylinder and connected to the drying cylinder.

[0005] Preferably, the pulverized coal conveying mechanism includes a first connecting hose, a pulverizing fan, and a second connecting hose. The input end of the pulverizing fan is connected to the first connecting hose, the output end of the pulverizing fan is connected to the second connecting hose, the other end of the first connecting hose is connected to the output end of the pulverized coal injection machine, and the other end of the second connecting hose is connected to the input end of the pulverized coal burner.

[0006] Preferably, the input end of the coal pulverizer is equipped with a receiving funnel to facilitate the receiving of coal powder by the coal pulverizer.

[0007] Preferably, a conveying funnel for conveying pulverized coal is provided at the top of the receiving funnel.

[0008] Preferably, it also includes a coal storage shed for storing pulverized coal.

[0009] Therefore, this utility model adopts the above-mentioned aggregate heating device for asphalt mixing plants, which effectively reduces energy consumption, saves construction costs, and improves project quality.

[0010] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the overall structure of the aggregate heating device for asphalt mixing plants in this utility model; Figure 2 This is a schematic diagram of the specific structure of the coal storage shed in this utility model.

[0012] Figure Labels 1. Coal pulverizer; 2. Pulverized coal burner; 3. Drying drum; 4. First connecting hose; 5. Pulverized coal conveying fan; 6. Second connecting hose; 7. Receiving funnel; 8. Conveying funnel; 9. Coal storage shed. Detailed Implementation

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0014] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0015] like Figure 1 As shown, an aggregate heating device for an asphalt mixing plant includes a pulverized coal injection mill 1, a pulverized coal conveying mechanism, a pulverized coal burner 2, and a drying cylinder 3. The pulverized coal conveying mechanism is located between the pulverized coal injection mill 1 and the pulverized coal burner 2. The output end of the pulverized coal burner 2 is inserted into and connected to the drying cylinder 3. Specifically, a pulverized coal conveying mechanism is provided between the pulverized coal injection mill 1 and the pulverized coal burner 2, and the output end of the pulverized coal burner 2 is inserted into and connected to the drying cylinder 3. A controller (not shown in the figure) is provided outside the device. The pulverized coal injection mill 1, the pulverized coal conveying mechanism, the pulverized coal burner 2, and the drying cylinder 3 are all electrically connected to the controller.

[0016] The pulverized coal conveying mechanism includes a first connecting hose 4, a pulverized coal conveying fan 5, and a second connecting hose 6. The input end of the pulverized coal conveying fan 5 is connected to the first connecting hose 4, and the output end of the pulverized coal conveying fan 5 is connected to the second connecting hose 6. The other end of the first connecting hose 4 is connected to the output end of the pulverized coal injection machine 1, and the other end of the second connecting hose 6 is connected to the input end of the pulverized coal burner 2. Specifically, the input end of the pulverized coal conveying fan 5 is provided with a connection port, one end of the first connecting hose 4 is connected to the connection port of the input end of the pulverized coal conveying fan 5 through a flange, the output end of the pulverized coal injection machine 1 is provided with a connection port, the other end of the first connecting hose 4 is connected to the connection port of the output end of the pulverized coal injection machine 1 through a flange, the output end of the pulverized coal conveying fan 5 is provided with a connection port, one end of the second connecting hose 6 is connected to the connection port of the output end of the pulverized coal conveying fan 5 through a flange, the input end of the pulverized coal burner 2 is provided with a connection port, and the other end of the second connecting hose 6 is connected to the connection port of the output end of the pulverized coal burner 2 through a flange. The pulverized coal conveying fan 5 is electrically connected to the controller.

[0017] The input end of the coal pulverizer 1 is equipped with a receiving funnel 7 to facilitate the receiving of coal powder. Specifically, the input end of the coal pulverizer 1 is equipped with a connection port, and the receiving funnel 7 is connected to the connection port of the input end of the coal pulverizer 1 through a flange. The receiving funnel 7 facilitates the receiving of coal powder by the coal pulverizer 1.

[0018] The receiving hopper 7 is equipped with a conveying hopper 8 for conveying pulverized coal. Specifically, the receiving hopper 7 is equipped with a conveying hopper 8 for conveying pulverized coal to the coal mill injection machine 1.

[0019] like Figure 2 As shown, an aggregate heating device for an asphalt mixing plant also includes a coal storage shed 9 for storing pulverized coal, specifically, the coal storage shed 9 stores pulverized coal for heating aggregate.

[0020] Working Principle: Coal powder in the coal storage shed 9 is transported to the conveying funnel 8. The coal powder, already impregnated with coal tar, is then conveyed through the conveying funnel 8 to the receiving funnel 7, and then precisely fed into the coal pulverizer 1. The coal pulverizer 1 pulverizes the coal powder into tiny particles below 150 mesh. Afterward, the coal powder is conveyed to the coal pulverizer 2 via the first connecting hose 4, the conveying fan 5, and the second connecting hose 6. Fuel is injected by the fuel oil ignition system, and the coal supply and induced draft are adjusted according to the temperature requirements of the mixture in the drying cylinder 3, ensuring complete combustion of the coal powder inside the coal pulverizer 2 and forming a stable spiral flame. Since the output end of the coal pulverizer 2 is directly inserted into the drying cylinder 3, the generated flame can directly act on the aggregate inside the drying cylinder 3, achieving aggregate heating. Throughout the process, the controller maintains an electrical connection with the coal pulverizer 1, the conveying fan 5, the coal pulverizer 2, and the drying cylinder 3, enabling real-time control of the operating status of each component and effectively ensuring the stable and orderly progress of the aggregate heating process.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. An aggregate heating device for an asphalt mixing plant, characterized in that: It includes a coal pulverizer, a coal powder conveying mechanism, a coal powder burner, and a drying cylinder. The coal powder conveying mechanism is located between the coal pulverizer and the coal powder burner. The output end of the coal powder burner is inserted into the drying cylinder and connected to the drying cylinder.

2. The aggregate heating device for an asphalt mixing plant according to claim 1, characterized in that: The pulverized coal conveying mechanism includes a first connecting hose, a pulverized coal conveying fan, and a second connecting hose. The input end of the pulverized coal conveying fan is connected to the first connecting hose, the output end of the pulverized coal conveying fan is connected to the second connecting hose, the other end of the first connecting hose is connected to the output end of the pulverized coal injection machine, and the other end of the second connecting hose is connected to the input end of the pulverized coal burner.

3. The aggregate heating device for an asphalt mixing plant according to claim 1, characterized in that: The input end of the coal pulverizer is equipped with a receiving funnel to facilitate the receiving of coal powder.

4. The aggregate heating device for an asphalt mixing plant according to claim 3, characterized in that: The upper part of the receiving hopper is equipped with a conveying hopper for conveying pulverized coal.

5. The aggregate heating device for an asphalt mixing plant according to claim 1, characterized in that: It also includes coal storage sheds for storing pulverized coal.

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