A heating device for asphalt concrete production

Abstract

The utility model relates to a kind of heating device of asphalt concrete production, including the drying cylinder installed on heating device, the drying cylinder is provided with material lifting structure, the material lifting structure includes several installation components arranged on drying cylinder, the installation component is provided with the material throwing component for lifting aggregate, the drying cylinder is provided with driving component.This heating device of asphalt concrete production, electric push rod starts, rack is driven to slide by L-shaped plate, transmission by gear, sleeve etc., make material throwing plate turn out from round groove, adjust to the suitable angle of insertion aggregate, cooperate drying cylinder rotation effectively and break up clump, so as to treat aggregate for different bonding state, after breaking up, aggregate is thrown and lifted, contact with high-temperature flue gas more fully, avoid local undried or overheating, ensure aggregate temperature stability, multiple material throwing components are distributed along drying cylinder central axis symmetry, can cover aggregate in cylinder comprehensively, adapt to different scale heating demand.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete production technology, specifically a heating device for asphalt concrete production. Background Technology

[0002] Asphalt concrete production includes processes such as raw material inspection and storage, batching, heating and mixing, and finished product inspection and storage. Among them, heating and mixing requires adding aggregates and mineral powder into the mixing drum and mixing for a period of time to make the mineral powder evenly adhere to the surface of the aggregates. Then, asphalt is added and wet-mixed to ensure that the asphalt completely coats the aggregates without any white spots or segregation. The mixing temperature needs to be controlled during the mixing process. Typically, the temperature is about 150-170℃ for base asphalt mixtures and about 170-180℃ for modified asphalt mixtures. Too low a temperature will result in insufficient bonding, while too high a temperature will cause the asphalt to age.

[0003] Currently, in asphalt concrete production technology, aggregates are heated and mixed by a heating device. The heating device is usually a drying cylinder heater, which consists of a drying cylinder and a heater. The high-temperature flame and flue gas produced by the heater directly enter the drying cylinder and come into full contact with the rotating and tumbling aggregates. The aggregates are heated by radiation and convection heat transfer, and the moisture in them is evaporated.

[0004] In practical use, the tumbling of aggregates is driven by the rotation of the drying drum. The rotation of the drying drum is controlled by the drive structure, which agitates the aggregates and accelerates the heating efficiency. If the moisture content of the aggregates is high and forms agglomerates, it will affect the contact area between the aggregates and the high-temperature flue gas, resulting in uneven heating. This causes some aggregates to be insufficiently dried, while others will oxidize or crack due to local overheating, making it difficult to control the aggregate temperature stably. Therefore, a heating device for asphalt concrete production is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a heating device for asphalt concrete production. It has the advantage of treating bonded aggregates and solves the problem that the tumbling of aggregates is driven by the rotation of the drying drum. The drive structure controls the rotation of the drying drum to agitate the aggregates, thereby accelerating the heating efficiency. However, if the moisture content of the aggregates is high and forms bonds, it will affect the contact area between the aggregates and the high-temperature flue gas, resulting in uneven heating. This causes some aggregates to not dry sufficiently, while others will oxidize or crack due to local overheating, making it difficult to control the aggregate temperature stably.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating device for asphalt concrete production, comprising a drying cylinder installed on the heating device, wherein a material lifting structure is provided on the drying cylinder;

[0007] The material lifting structure includes several mounting components disposed on the drying cylinder. Each mounting component is equipped with a material throwing component for lifting the collected material. The drying cylinder is equipped with a driving component. The driving component is equipped with a transmission component for driving the material throwing component to rotate, and the transmission component is connected to the driving component.

[0008] The mounting component includes a mounting platform fixedly mounted on the drying cylinder, a sleeve rotatably mounted on the mounting platform, and a gear fixedly mounted on the outer surface of the sleeve;

[0009] The throwing component includes a connecting column mounted on the sleeve, with one end of the connecting column penetrating and extending into the interior of the drying cylinder. A frustum is fixedly connected to one end of the connecting column, and a throwing plate for collecting and throwing materials is fixedly mounted on the frustum.

[0010] The driving component includes a support frame fixedly mounted on the drying cylinder, an electric push rod fixedly mounted on the support frame, and the electric push rod being connected to the transmission component;

[0011] The transmission component includes a rack that is slidably mounted inside the support frame, and the rack meshes with a gear.

[0012] Furthermore, a connecting hole is provided on the connecting column, and a pin for fixing the connecting column is fixedly installed on the sleeve, and the pin is adapted to the connecting hole.

[0013] Furthermore, a bearing for supporting the rotation of the sleeve is fixedly installed on the mounting platform, and the inner peripheral wall of the bearing is fixedly connected to the outer peripheral wall of the sleeve.

[0014] Furthermore, a limiting groove is provided on the support frame, and a protrusion is provided on the top of the rack, and the protrusion is slidably connected to the limiting groove.

[0015] Furthermore, an L-shaped plate is fixedly installed on the top of the protrusion, and the L-shaped plate is slidably installed on the top of the support frame. One side of the L-shaped plate is fixedly connected to the telescopic end of the electric push rod.

[0016] Furthermore, the drying cylinder has several circular grooves, which are adapted to the frustum. The number of the mounting components and the material throwing components is the same as the number of circular grooves, and there are no fewer than four of them that are symmetrically distributed around the central axis of the drying cylinder.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The heating device for asphalt concrete production is started by an electric push rod, which drives the rack to slide through the L-shaped plate. Through the transmission of gears and sleeves, the material throwing plate rotates out of the circular groove and is adjusted to a suitable angle to insert into the aggregate. In conjunction with the rotation of the drying cylinder, it effectively breaks up the clumps, thereby treating aggregates with different bonding states.

[0019] 2. The heating device for asphalt concrete production disperses and throws the aggregates, allowing them to come into full contact with the high-temperature flue gas, preventing localized sludge or overheating, and ensuring stable aggregate temperature. Multiple throwing components are symmetrically distributed along the central axis of the drying cylinder, which can fully cover the aggregates inside the cylinder and adapt to heating needs of different scales.

[0020] 3. The heating device for asphalt concrete production has bearings to ensure smooth rotation of the sleeve, and a limiting groove that cooperates with the protrusion to limit the sliding trajectory of the rack, making the overall transmission stable and reliable. The connecting column is connected to the sleeve through a pin, which facilitates the disassembly, replacement and maintenance of components such as the material throwing plate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Schematic diagram of the material lifting structure;

[0023] Figure 3 This is a schematic diagram of the drying cylinder structure of this utility model;

[0024] Figure 4 This is an exploded view of the material lifting structure of this utility model;

[0025] Figure 5 This is an exploded view of the structural mounting component and the material throwing component of this utility model.

[0026] In the diagram: 1. Drying cylinder; 11. Circular trough; 2. Lifting structure; 21. Mounting component; 211. Mounting platform; 212. Sleeve; 213. Gear; 214. Pin; 215. Bearing; 22. Throwing component; 221. Connecting column; 222. Frustum; 223. Throwing plate; 224. Connecting hole; 23. Driving component; 231. Support frame; 232. Electric push rod; 233. Limiting groove; 24. Transmission component; 241. Rack; 242. Protrusion; 243. L-shaped plate. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figure 1-5The heating device for asphalt concrete production in this embodiment includes a drying cylinder 1 installed on the heating device, and a material lifting structure 2 is provided on the drying cylinder 1.

[0029] Example 2: Please refer to Figure 1-5 Based on Embodiment 1, the lifting structure 2 includes several mounting components 21 disposed on the drying cylinder 1. The mounting components 21 are provided with a throwing component 22 for lifting the collected material. The drying cylinder 1 is provided with a driving component 23. The driving component 23 is provided with a transmission component 24 for driving the throwing component 22 to rotate. The transmission component 24 is connected to the driving component 23.

[0030] The mounting component 21 includes a mounting platform 211 fixedly mounted on the drying cylinder 1, a sleeve 212 rotatably mounted on the mounting platform 211, and a gear 213 fixedly mounted on the outer surface of the sleeve 212.

[0031] The throwing component 22 includes a connecting column 221 mounted on the sleeve 212, and one end of the connecting column 221 penetrates and extends into the interior of the drying cylinder 1. A frustum 222 is fixedly connected to one end of the connecting column 221, and a throwing plate 223 for collecting and throwing is fixedly mounted on the frustum 222. The rotation of the sleeve 212 causes the connecting column 221 and the frustum 222 and the throwing plate 223 at the end to flip, thereby adjusting the angle of the throwing plate 223.

[0032] The drive component 23 includes a support frame 231 fixedly mounted on the drying cylinder 1, an electric push rod 232 fixedly mounted on the support frame 231, and the electric push rod 232 is connected to the transmission component 24.

[0033] The transmission component 24 includes a rack 241 that is slidably mounted inside the support frame 231, and the rack 241 meshes with the gear 213. The rack 241 and the gear 213 mesh, and the rack 241 slides to drive the gear 213 to rotate, so that the sleeve 212 rotates under the support of the bearing 215 of the mounting platform 211.

[0034] It should be noted that the drying cylinder 1 has several circular grooves 11, and the circular grooves 11 are adapted to the truncated cone 222. The number of mounting components 21 and throwing components 22 is the same as that of the circular grooves 11, and there are no less than four of them symmetrically distributed around the central axis of the drying cylinder 1. The multiple symmetrically distributed throwing components 22 can disperse and throw the aggregate from different positions to ensure that the aggregate is heated evenly and improve the heating and drying efficiency and effect.

[0035] Using the above technical solution, the electric push rod 232 is activated, driving the L-shaped plate 243 connected to it to move, which in turn pushes the rack 241 to slide in the limiting groove 233 of the support frame 231. The rack 241 meshes with the gear 213, and the sliding of the rack 241 drives the gear 213 to rotate, causing the sleeve 212 to rotate under the support of the bearing 215 of the mounting platform 211. The sleeve 212 is connected to the connecting column 221 through the pin 214. The rotation of the sleeve causes the connecting column 221 and the frustum 222 and the throwing plate 223 at the end to flip, thereby adjusting the angle of the throwing plate 223 so that it can be properly inserted into the aggregate, effectively breaking up the bonded aggregate, increasing the contact area with the high-temperature flue gas, improving the heating uniformity, and laying the foundation for uniform heating and drying of the aggregate.

[0036] Example 3: Please refer to Figure 1-5 Based on Embodiment 2, a connecting hole 224 is provided on the connecting column 221, and a pin 214 for fixing the connecting column 221 is fixedly installed on the sleeve 212. The pin 214 is adapted to the connecting hole 224, and the connecting hole 224 of the connecting column 221 is adapted to the pin 214 of the sleeve 212. The connection method of using the pin 214 makes the connection between the connecting column 221 and the sleeve stable and detachable, which facilitates the installation, disassembly and replacement of the throwing component 22, reduces maintenance costs and difficulties, and improves the maintenance efficiency of the device.

[0037] The mounting platform 211 is fixedly equipped with a bearing 215 for supporting the rotation of the sleeve 212, and the inner circumferential wall of the bearing 215 is fixedly connected to the outer circumferential wall of the sleeve 212 to ensure smooth and stable rotation of the sleeve, reduce frictional resistance, reduce component wear, extend the service life of the device, and ensure the accuracy of the angle adjustment of the throwing plate 223.

[0038] In addition, a limiting groove 233 is provided on the support frame 231, and a protrusion 242 is provided on the top of the rack 241. The protrusion 242 is slidably connected to the limiting groove 233, which restricts the sliding direction of the rack 241, prevents it from deviating or shaking, and ensures the stability and accuracy of the meshing between the rack 241 and the gear 213. An L-shaped plate 243 is fixedly installed on the top of the protrusion 242, and the L-shaped plate 243 is slidably installed on the top of the support frame 231. One side of the L-shaped plate 243 is fixedly connected to the telescopic end of the electric push rod 232, which enhances the stability of the connection between the electric push rod 232 and the rack 241, making the power transmission more direct and efficient, while ensuring the smooth sliding of the rack 241, and further improving the working reliability of the transmission component 24.

[0039] By adopting the above technical solution, the material throwing component 22 can be easily disassembled and assembled through the pin shaft 214 connection to improve maintenance efficiency. The bearing 215 supports and ensures the stable rotation of the sleeve to extend its service life and ensure precise adjustment. The limiting groove 233 and the protrusion 242 cooperate to ensure the stable transmission of the rack 241. The L-shaped plate enhances the stability and efficiency of power transmission, which together improves the ease of maintenance, operational stability and transmission reliability of the device.

[0040] The working principle of the above embodiments is as follows:

[0041] When the heating device for asphalt concrete production is in use, the heating device is started and the drying cylinder 1 begins to rotate. At the same time, the heater produces high-temperature flames and flue gas which enter the drying cylinder 1 to preheat the aggregate.

[0042] When the electric push rod 232 is activated, it moves the L-shaped plate 243 connected to it, which in turn pushes the rack 241 to slide in the limiting groove 233 of the support frame 231. The rack 241 meshes with the gear 213. The sliding of the rack 241 drives the gear 213 to rotate, causing the sleeve 212 to rotate under the support of the bearing 215 of the mounting platform 211. The sleeve 212 is connected to the connecting column 221 through the pin 214. The rotation of the sleeve causes the connecting column 221 and the frustum 222 and the throwing plate 223 at the end to flip, thereby adjusting the angle of the throwing plate 223.

[0043] The drying cylinder 1 continues to rotate, and the throwing plate 223 is inserted into the bonded aggregate at a set angle to break up the bonded aggregate. At the same time, the aggregate is lifted and scattered as the drying cylinder rotates, increasing the contact area between the aggregate and the high-temperature flue gas.

[0044] Depending on the state of the aggregate, the electric push rod 232 operates in reverse, causing the throwing plate 223 to reset, so that the throwing plate 223 only lifts and throws the aggregate inside the drying cylinder 1, thereby improving the throwing efficiency of the aggregate.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, 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 heating device for asphalt concrete production, comprising a drying cylinder (1) installed on the heating device, characterized in that: The drying cylinder (1) is provided with a material lifting structure (2); The lifting structure (2) includes several mounting components (21) on the drying cylinder (1). The mounting components (21) are provided with a throwing component (22) for lifting the collected material. The drying cylinder (1) is provided with a driving component (23). The driving component (23) is provided with a transmission component (24) for driving the throwing component (22) to rotate. The transmission component (24) is connected to the driving component (23). The mounting component (21) includes a mounting platform (211) fixedly mounted on the drying cylinder (1), a sleeve (212) rotatably mounted on the mounting platform (211), and a gear (213) fixedly mounted on the outer surface of the sleeve (212). The throwing component (22) includes a connecting column (221) installed on the sleeve (212), and one end of the connecting column (221) extends through and into the interior of the drying cylinder (1). A frustum (222) is fixedly connected to one end of the connecting column (221), and a throwing plate (223) for collecting and throwing is fixedly installed on the frustum (222). The drive component (23) includes a support frame (231) fixedly installed on the drying cylinder (1), an electric push rod (232) fixedly installed on the support frame (231), and the electric push rod (232) is connected to the transmission component (24); The transmission component (24) includes a rack (241) slidably mounted inside the support frame (231), and the rack (241) meshes with the gear (213).

2. The heating device for asphalt concrete production according to claim 1, characterized in that: The connecting post (221) has a connecting hole (224), and the sleeve (212) is fixedly installed with a pin (214) for fixing the connecting post (221), and the pin (214) is adapted to the connecting hole (224).

3. The heating device for asphalt concrete production according to claim 1, characterized in that: The mounting platform (211) is fixedly mounted with a bearing (215) for supporting the rotation of the sleeve (212), and the inner peripheral wall of the bearing (215) is fixedly connected to the outer peripheral wall of the sleeve (212).

4. The heating device for asphalt concrete production according to claim 1, characterized in that: The support frame (231) has a limiting groove (233), and the top of the rack (241) has a protrusion (242), which is slidably connected to the limiting groove (233).

5. The heating device for asphalt concrete production according to claim 4, characterized in that: An L-shaped plate (243) is fixedly installed on the top of the protrusion (242), and the L-shaped plate (243) is slidably installed on the top of the support frame (231). One side of the L-shaped plate (243) is fixedly connected to the telescopic end of the electric push rod (232).

6. The heating device for asphalt concrete production according to claim 1, characterized in that: The drying cylinder (1) has several circular grooves (11) and the circular grooves (11) are adapted to the truncated cone (222). The number of the mounting component (21) and the throwing component (22) is the same as that of the circular grooves (11), and there are no less than four of them that are symmetrically distributed along the central axis of the drying cylinder (1).

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