equipment for melting asphalt

Abstract

This utility model provides a device for melting asphalt, comprising: a housing with an internal containment space and a filling port at the top; a heating component, at least partially installed within the containment space, adapted to preheat the containment space and heat the asphalt in a solid or semi-solid state within the preheated containment space, causing the asphalt to melt into a liquid state; a spraying component, installed on the housing, adapted to spray at least a portion of the liquid asphalt onto the solid or semi-solid asphalt in the containment space, thereby accelerating the melting of the solid or semi-solid asphalt; and a receiving component, installed between the filling port and the heating component, adapted to receive the solid or semi-solid asphalt fed from the filling port, thereby reducing the impact of the solid or semi-solid asphalt on the heating component.

Description

Technical Field

[0001] At least one embodiment of this utility model relates to the field of melting equipment technology, and more particularly to an equipment for melting asphalt. Background Technology

[0002] Asphalt is a black, viscous material widely used in construction and transportation, primarily derived from the residues of petroleum refining (petroleum asphalt). Asphalt is solid or semi-solid at room temperature, but liquefies upon heating. It is mainly used for road paving, building waterproofing, and pipeline corrosion protection, offering advantages such as strong adhesion, ease of construction, low cost, and excellent waterproofing performance.

[0003] Asphalt requires processing during use. Solid or semi-solid asphalt is heated to a liquid state at high temperatures and then transported to other locations through appropriate pipelines. In related technologies, heating equipment is generally used to directly heat the asphalt; however, this heating method has drawbacks such as low heat transfer efficiency and limited melting speed. Utility Model Content

[0004] In view of this, the present invention provides a device for melting asphalt, which can improve the melting speed of asphalt.

[0005] As one aspect of this utility model, an apparatus for melting asphalt is provided, comprising a housing, a heating component, a spraying component, and a receiving component. The housing has an internal receiving space and a filling inlet at the top. The heating component is at least partially installed within the receiving space and is adapted to preheat the receiving space and to heat the preheated asphalt in a solid or semi-solid state within the receiving space, causing the asphalt to melt into a liquid state. The spraying component is installed on the housing and is adapted to spray at least a portion of the liquid asphalt onto the solid or semi-solid asphalt within the receiving space, thereby accelerating the melting of the solid or semi-solid asphalt. The receiving component is installed between the filling inlet and the heating component, and is adapted to receive the solid or semi-solid asphalt fed in from the filling inlet, reducing the impact of the solid or semi-solid asphalt on the heating component.

[0006] According to an embodiment of this utility model, the spraying assembly includes an inlet pipe, a circulation pump, and an outlet pipe. One end of the inlet pipe extends into the bottom of the receiving space; the circulation pump is connected to the other end of the inlet pipe; one end of the outlet pipe extends into the upper part of the receiving space, and the other end is connected to the circulation pump; wherein, the liquid asphalt located at the bottom of the receiving space flows into the inlet pipe under the action of the circulation pump, flows out from the outlet pipe, and is sprayed onto the solid or semi-solid asphalt through the outlet pipe.

[0007] According to an embodiment of this utility model, the outlet pipe includes a main pipe and a branch pipe. The main pipe extends from the circulation pump to the upper part of the receiving space; the branch pipe extends from the main pipe located at the upper part of the receiving space, in a direction perpendicular to the extension direction of the main pipe, to above the solid or semi-solid asphalt.

[0008] The branch pipe has multiple injection holes spaced apart and directed toward the solid or semi-solid asphalt, through which the liquid asphalt is sprayed onto the solid or semi-solid asphalt.

[0009] According to an embodiment of this utility model, the portions of the inlet pipe and the main pipe extending outside the casing both include an inner pipe and an outer pipe. The inner pipe is suitable for guiding the flow of liquid asphalt; the outer pipe is sleeved outside the inner pipe and forms a flow channel with the inner pipe; wherein, a first opening and a second opening are respectively formed on the wall surface along the length direction of the outer pipe, and both the first opening and the second opening are in communication with the flow channel. A heat-conducting medium from the outside flows into the flow channel through the first opening and flows out through the second opening to provide heat to the inner pipe and prevent the liquid asphalt from solidifying inside the inner pipe.

[0010] According to an embodiment of the present invention, the spraying assembly further includes a filtration unit, which is installed on the liquid inlet pipe and located at the front end of the circulation pump along the flow direction of the liquid asphalt. The filtration unit is adapted to filter out impurities in the liquid asphalt before the liquid asphalt flows into the circulation pump.

[0011] According to an embodiment of this utility model, the heating assembly includes a support frame and a heating tube. The support frame is installed within the accommodating space; the heating tube is coiled within the accommodating space via the support frame, with both ends of the heating tube extending from the housing to communicate with an external medium supply assembly; wherein, the heat-conducting medium provided by the medium supply assembly flows into the heating tube from one end and out from the other end to provide heat to the accommodating space, causing the solid or semi-solid asphalt to melt.

[0012] According to an embodiment of the present invention, the support frame includes multiple mounting plates, which are arranged perpendicularly to and spaced apart from the extension direction of the heating tubes within the accommodating space. Each mounting plate has multiple through holes, and each heating tube is disposed within the accommodating space through the multiple through holes. A flow channel is formed between the mounting plate and the bottom wall of the housing to allow the liquid asphalt to flow from one side of the mounting plate to the other side.

[0013] According to an embodiment of this utility model, the heating tube includes an inlet section, a heating section, and an outlet section. The inlet section is installed outside the housing, and the heat-conducting medium from the medium supply assembly flows in through the inlet section. The inner diameter of the inlet section gradually decreases along the flow direction of the heat-conducting medium to increase the flow velocity of the heat-conducting medium. The heating section is installed inside the receiving space via the mounting plate, and the heat-conducting medium flowing in from the inlet section provides heat to the receiving space via the heating section. The outlet section is installed outside the housing and is adapted to transport the heat-conducting medium from the heating section back to the medium supply assembly. The inner diameter of the outlet section gradually increases along the flow direction of the heat-conducting medium.

[0014] According to an embodiment of this utility model, there are multiple filling ports, spaced apart and formed on the top of the housing. The receiving assembly includes multiple receiving plates, which are horizontally and spaced apart between the multiple filling ports and the heating assembly.

[0015] According to an embodiment of the present invention, the above-mentioned device further includes a discharge pipe. The discharge pipe is suitable for discharging liquid asphalt from the containing space.

[0016] According to an embodiment of the present invention, the above-mentioned device further includes a stirring assembly, wherein the stirring paddle of the stirring assembly is disposed in the tank and is suitable for stirring the liquid asphalt in the tank.

[0017] The asphalt melting device according to an embodiment of this utility model preheats and heats the containing space through a heating component, which can efficiently melt solid or semi-solid asphalt into a liquid state. The spraying component can evenly spray the melted liquid asphalt onto the incompletely melted asphalt. Through the thermal conduction effect of the liquid, the melting process of the solid or semi-solid asphalt can be accelerated. When a large amount (e.g., 50 kg or more) of solid or semi-solid asphalt is fed into the containing space from the filler inlet, the receiving component can buffer the impact of the solid or semi-solid asphalt on the heating component to a certain extent, reducing the risk of damage to the heating component and extending its service life. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0019] Figure 1 A perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically;

[0020] Figure 2 Schematic illustration Figure 1 A partially enlarged view of part A of the equipment for melting asphalt;

[0021] Figure 3 A further perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically.

[0022] Figure 4 Schematic illustration Figure 3 A magnified view of part B shown;

[0023] Figure 5 A perspective view of a spraying assembly according to an embodiment of the present invention is shown schematically;

[0024] Figure 6 A further perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically.

[0025] Figure 7 Schematic illustration Figure 6 A magnified view of part C shown;

[0026] Figure 8 A schematic cross-sectional view of the liquid inlet pipe according to an embodiment of the present invention is shown;

[0027] Figure 9 A schematic diagram illustrating the first hydrodynamic analysis results of the liquid inlet section according to an embodiment of the present invention is shown.

[0028] Figure 10 A schematic diagram illustrating the first hydrodynamic analysis results of the liquid inlet section according to an embodiment of the present invention is shown.

[0029] Figure 11 A schematic cross-sectional view of an asphalt melting device according to another embodiment of the present invention is shown.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1-Box;

[0032] 11-Packing port;

[0033] 12 - Air outlet;

[0034] 13-Guardrail;

[0035] 2-Heating components;

[0036] 21-Support frame;

[0037] 22-Heating element;

[0038] 221 - Liquid Inlet Section;

[0039] 222 - Heating section;

[0040] 223-discharge part;

[0041] 3-Spraying components;

[0042] 31-Inlet pipe;

[0043] 32-Circulating pump;

[0044] 33-Discharge pipe;

[0045] 331 - Main pipeline;

[0046] 332 - Branch pipe;

[0047] 3321 - Injection hole;

[0048] 333 - Internal piping;

[0049] 334 - External pipe;

[0050] 3341 - First opening;

[0051] 3342 - Second opening;

[0052] 335-flow channel;

[0053] 34 - Filter unit;

[0054] 4- Components received;

[0055] 5-Discharge pipe;

[0056] 6-Agitator assembly;

[0057] 61 - First stirring unit;

[0058] 611. Agitator pump;

[0059] 612. Transmission mechanism;

[0060] 613. First mixing paddle;

[0061] 62. Second stirring unit;

[0062] 7-Auxiliary heating components. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0064] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0065] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0066] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0067] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this utility model. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this utility model.

[0068] Figure 1 A perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically. Figure 2 Schematic illustration Figure 1 A partially enlarged view of part A of the equipment for melting asphalt.

[0069] As one aspect of this utility model, an apparatus for melting asphalt is provided. For example... Figure 1 and Figure 2As shown, the asphalt melting device includes a housing 1, a heating component 2, a spraying component 3, and a receiving component 4. The housing 1 forms an internal containment space, with a filling inlet 11 at the top. The heating component 2 is at least partially installed within the containment space, and is used to preheat the containment space and heat the asphalt in a solid or semi-solid state within the preheated space, melting the asphalt into a liquid state. The spraying component 3 is installed on the housing 1 and is used to spray at least a portion of the liquid asphalt onto the solid or semi-solid asphalt within the containment space, accelerating the melting of the solid or semi-solid asphalt. The receiving component 4 is installed between the filling inlet 11 and the heating component 2. The receiving component 4 is used to receive the solid or semi-solid asphalt fed from the filling inlet 11, reducing the impact of the solid or semi-solid asphalt on the heating component 2.

[0070] According to the embodiment of the present invention, the asphalt melting device preheats and heats the containing space through the heating component 2, which can efficiently melt solid or semi-solid asphalt into a liquid state. The spraying component 3 can evenly spray the melted liquid asphalt onto the asphalt that has not yet been completely melted. Through the heat conduction effect of the liquid, the melting process of solid or semi-solid asphalt can be accelerated. When a large amount (e.g., 50 kg or more) of solid or semi-solid asphalt is fed into the containing space from the filling port 11, the receiving component 4 can buffer the impact of solid or semi-solid asphalt on the heating component 2 to a certain extent, reduce the risk of damage to the heating component 2, and extend the service life of the heating component 2.

[0071] In one illustrative embodiment, the heating temperature T of the heating component can be greater than or equal to 200°C, i.e., T≥200°C. For example, the heating temperature T can be any temperature among 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, and 300°C.

[0072] In one illustrative embodiment, a guardrail 13 may also be provided on the top of the housing 1.

[0073] In the process of realizing this utility model, it was discovered that when the entire box 1 is fully loaded, a large amount of smoke and dust may be generated due to the melting of asphalt, and some of this smoke and dust may cause air pollution.

[0074] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, an air outlet 12 is also formed on the upper part of the box 1 to collect the smoke and dust generated during the asphalt melting process through the air outlet 12, so as to centrally treat the smoke and dust.

[0075] In one illustrative embodiment, the housing may be disposed on a base (e.g., the ground) or disposed within a pit (e.g., a depression formed downward from the ground), with at least a portion of the housing protruding from the pit.

[0076] Figure 3 A further perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically. It should be noted that... Figure 3 The side wall on one side of box 1 was removed.

[0077] Figure 4 Schematic illustration Figure 3 A magnified view of part B shown. Figure 5 A perspective view of a spraying assembly according to an embodiment of the present invention is shown schematically.

[0078] According to embodiments of the present invention, such as Figures 1 to 5 As shown, the spraying assembly 3 includes an inlet pipe 31, a circulation pump 32, and an outlet pipe 33. One end of the inlet pipe 31 extends into the bottom of the receiving space, and the circulation pump 32 is connected to the other end of the inlet pipe 31. One end of the outlet pipe 33 extends into the upper part of the receiving space, and the other end of the outlet pipe 33 is connected to the circulation pump 32. Liquid asphalt located at the bottom of the receiving space flows into the space through the inlet pipe 31 under the action of the circulation pump 32 and flows out through the outlet pipe 33, thus being sprayed onto the solid or semi-solid asphalt through the outlet pipe 33.

[0079] In this embodiment, the circulating pump 32 allows the liquid asphalt to circulate between the inlet pipe 31 and the outlet pipe 33, continuously spraying the melted asphalt at the bottom onto the unmelted solid or semi-solid asphalt on the supporting component. This enhances heat exchange efficiency and accelerates the entire melting process of the asphalt. Furthermore, since the asphalt is sprayed from the bottom to the top of the housing 1, it ensures that the asphalt throughout the entire containment space is evenly exposed to heat, avoiding incomplete melting due to uneven heating.

[0080] In some embodiments, the circulation pump 32 is a booster pump, which can be configured to allow the injection velocity of liquid asphalt to reach 2.0 MPa - 2.5 MPa. For example, it can be any of 2.0 MPa, 2.1 MPa, 2.2 MPa, 2.3 MPa, 2.4 MPa, and 2.5 MPa.

[0081] In one illustrative embodiment, the circulation pump 32 may be a gear booster pump configured to spray liquid asphalt at a flow rate of up to 2.3 MPa onto solid or semi-solid asphalt.

[0082] Figure 6 A further perspective view of an apparatus for melting asphalt according to an embodiment of the present invention is shown schematically. It should be noted that... Figure 6 The side wall on one side of box 1 was removed.

[0083] Figure 7 Schematic illustration Figure 6 A magnified view of part C shown.

[0084] According to embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 6 As shown, there are multiple packing ports 11, spaced apart at the top of the housing 1. Figure 6 and Figure 7 As shown, the receiving assembly 4 includes multiple receiving plates, which are arranged horizontally and at intervals between multiple filling ports 11 and the heating assembly 2.

[0085] In this embodiment, multiple filler ports 11 allow solid or semi-solid asphalt to be dispersed during filling, reducing the impact pressure on individual receiving plates and extending their service life. Furthermore, multiple filler ports 11 allow for simultaneous filling operations, accelerating the filling speed and improving overall work efficiency. Multiple receiving plates also ensure more uniform distribution of asphalt before it enters the receiving space, facilitating uniform heating of the asphalt by the heating assembly 2.

[0086] According to an embodiment of this utility model, each filling port 11 is provided with an openable and closable cover. When filling is required, the cover is opened, and solid or semi-solid asphalt is poured into multiple receiving plates through the filling port 11. After the pouring is completed, the filling port 11 on the cover can be closed.

[0087] According to embodiments of the present invention, such as Figure 3 and Figure 5 As shown, the outlet pipe 33 includes a main pipe 331 and a branch pipe 332. The main pipe 331 extends from the circulation pump 32 to the upper part of the receiving space, and the branch pipe 332 extends from the main pipe 331 located in the upper part of the receiving space, perpendicular to the extension direction of the main pipe 331, to the top of the solid or semi-solid asphalt. Multiple injection holes 3321 are formed on the branch pipe 332, spaced apart and facing the solid or semi-solid asphalt, through which the liquid asphalt is sprayed onto the solid or semi-solid asphalt.

[0088] In such an embodiment, by extending a branch pipe 332 from the main pipe 331 and forming a plurality of injection holes 3321 on the branch pipe 332, it is possible to ensure that the liquid asphalt is sprayed evenly over the solid or semi-solid asphalt, thereby improving the uniformity of melting.

[0089] In one illustrative embodiment, the number of branch pipes 332 can be multiple. They are spaced apart.

[0090] In one illustrative embodiment, the injection hole 3321 can be circular or elliptical, etc.

[0091] In one illustrative embodiment, a plurality of filling ports 11 may be spaced apart at the top of the housing along the length of the housing. At least a portion of the main pipe extends along the length of the housing within the accommodating space, and a plurality of branch pipes 332 extend from the main pipe along the width of the housing, forming on both sides of each filling port 11, so as to spray molten high-temperature asphalt into the solid or semi-solid asphalt located on the bearing component through injection holes on the branch pipes, thereby accelerating the melting of the asphalt.

[0092] In this embodiment, the branch pipes located on both sides of the box body along its length have injection holes on the side facing the adjacent receiving plate. Injection holes are opened on both sides of the branch pipe located between two adjacent receiving plates, allowing liquid asphalt to be sprayed onto the two adjacent receiving plates.

[0093] In one illustrative embodiment, the injection holes can be uniformly formed on the branch pipe.

[0094] In one illustrative embodiment, liquid asphalt is sprayed toward the solid or semi-solid asphalt located on the receiving component 4 under the action of the spraying hole 3321, thereby accelerating the melting of the solid or semi-solid asphalt.

[0095] In one illustrative embodiment, multiple branch pipes 332 can be located diagonally above the solid or semi-solid asphalt, that is, diagonally above each receiving plate. During equipment operation, after the solid or semi-solid asphalt is thrown from the filling port 11, the circulation pump 32 is turned on. The asphalt melted under the heating of the heating component 2 in the containing space is sent to the diagonally above the solid or semi-solid asphalt through the circulation pump 32, so that the liquid asphalt forms a spray angle with the receiving surface of the receiving component 4, thereby accelerating the melting of the solid or semi-solid asphalt.

[0096] Figure 8 A schematic cross-sectional view of the inlet pipe according to an embodiment of the present invention is shown.

[0097] According to embodiments of the present invention, such as Figure 8As shown, the portions of the inlet pipe 31 and the main pipe 331 extending outside the housing 1 each include an inner pipe 333 and an outer pipe 334. The inner pipe 333 is suitable for guiding the flow of liquid asphalt. The outer pipe 334 is fitted outside the inner pipe 333, forming a flow channel 335 between them. A first opening 3341 and a second opening 3342 are formed on the wall of the outer pipe 334 along its length. Both the first opening 3341 and the second opening 3342 communicate with the flow channel 335. A heat-conducting medium from the outside flows into the flow channel 335 through the first opening 3341 and flows out through the second opening 3342, providing heat to the inner pipe 333 and preventing the liquid asphalt from solidifying inside the inner pipe 333.

[0098] In one illustrative embodiment, the heat-conducting medium may be heat-conducting oil. The heat-conducting medium used to provide heat to the inner pipe 333 may be the same as or different from the heat-conducting medium of the heating assembly 2.

[0099] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the aforementioned asphalt melting device also includes a discharge pipe 5. The discharge pipe 5 is suitable for discharging liquid asphalt from the containing space. The discharge pipe 5 can also have a similar structure to the inlet pipe 31 to prevent the liquid asphalt from solidifying inside the discharge pipe 5.

[0100] In the process of realizing this utility model, it was discovered that the source of solid asphalt raw materials is mostly underground and unprocessed, and may contain a large amount of stones or metals.

[0101] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the spraying assembly 3 also includes a filter unit 34. The filter unit 34 is installed on the inlet pipe 31 and is located at the front end of the circulation pump 32 along the flow direction of the liquid asphalt. The filter unit 34 is used to filter out impurities in the liquid asphalt before it flows into the circulation pump 32, preventing any non-standard items in the melted asphalt from causing irreversible damage to the precision pump body of the circulation pump 32.

[0102] In one illustrative embodiment, the filter unit 34 may be a basket filter.

[0103] According to embodiments of the present invention, such as Figure 3 and Figure 4As shown, the heating assembly 2 includes a support frame 21 and a heating tube 22. The support frame 21 is installed within the receiving space, and the heating tube 22 is coiled within the receiving space via the support frame 21. Both ends of the heating tube 22 extend from the housing 1 to communicate with an external medium supply assembly. The heat-conducting medium provided by the external medium supply assembly flows into the receiving space from one end of the heating tube 22 and flows out from the other end, providing heat to the receiving space to melt the solid or semi-solid asphalt.

[0104] In one illustrative embodiment, there may be multiple support frames 21, arranged at intervals within the accommodating space.

[0105] In one illustrative embodiment, a flow channel is formed between each support frame 21 and the bottom of the housing 1, allowing liquid asphalt located on both sides of a support frame 21 to flow from one side of the support frame 21 to the other.

[0106] In one illustrative embodiment, the heat-conducting medium may be heat-conducting oil.

[0107] According to an embodiment of this utility model, the support frame 21 includes multiple mounting plates, which are arranged perpendicularly and at intervals to the extending direction of the heating pipes 22 within the accommodating space. Each mounting plate has multiple through holes, and each heating pipe 22 is disposed within the accommodating space through the multiple through holes. A flow channel is formed between the mounting plate and the bottom wall of the housing 1 to allow liquid asphalt to flow from one side of the mounting plate to the other.

[0108] In one illustrative embodiment, such as Figure 2 and Figure 4 As shown, the device for melting asphalt may include multiple sets of heating tubes 22. For example, there may be 2 sets, 3 sets, or 4 sets.

[0109] According to embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the heating tube 22 includes an inlet section 221, a heating section 222, and an outlet section 223. The inlet section 221 is installed outside the housing 1, and the heat-conducting medium from the medium supply assembly flows in through it. The inner diameter of the inlet section 221 gradually decreases along the flow direction of the heat-conducting medium to increase its flow velocity. The heating section 222 is installed within the receiving space via a mounting plate, and the heat-conducting medium flowing in from the inlet section 221 provides heat to the receiving space through it. The outlet section 223 is installed outside the housing 1 and is used to return the heat-conducting medium from the heating section 222 to the medium supply assembly. The inner diameter of the outlet section 223 gradually increases along the flow direction of the heat-conducting medium.

[0110] In this embodiment, the inner diameter of the inlet section 221 gradually decreases, which increases the flow rate of the heat-conducting medium, improves heat exchange efficiency, and enables the heat-conducting medium to transfer heat to the asphalt more quickly. Furthermore, the inner diameter of the outlet section 223 gradually increases, which reduces the flow rate of the heat-conducting medium, decreases the back pressure on the pump, and improves circulation efficiency.

[0111] Figure 9 The diagram schematically illustrates the first hydrodynamic analysis results of the liquid inlet section according to an embodiment of the present invention. Figure 10 A schematic diagram illustrating the first hydrodynamic analysis results of the liquid inlet section according to an embodiment of the present invention is shown. Figure 9 and Figure 10 In the diagram, different colors represent different speeds (m / s).

[0112] In one illustrative embodiment, the inlet section 221 can utilize multi-stage piping to increase the pressure of the heat transfer medium at the outlet terminal. For example... Figure 9 and Figure 10 As shown, the pipe diameter can be selected as DN125→DN100→DN80→DN50→DN25, with the diameter at DN80 (that is...) Figure 9 The horizontally arranged pipes shown in the image have incorporated a heat transfer oil distributor. The fluid dynamics analysis of this device is as follows: Figure 9 and Figure 10 As shown, multi-stage pipeline conversion can effectively increase the flow characteristics of the heat transfer medium at the terminal.

[0113] Figure 11 A schematic cross-sectional view of an asphalt melting device according to another embodiment of the present invention is shown.

[0114] like Figure 11 As shown, the asphalt melting equipment may also include a mixing assembly 6. The mixing paddle of the mixing assembly 6 is disposed inside the tank and is suitable for mixing the liquid asphalt inside the tank.

[0115] The agitator includes a first rod and blades disposed on the first rod. The first rod is arranged parallel to the vertical direction, and the blades are disposed at the lower part of the first rod. Driven by the agitator pump 611, the first rod rotates around its axis, and the blades rotate with the first rod.

[0116] The stirring paddle, heating element, and support frame are all spaced apart.

[0117] The mixing component 6 is used to mix the liquid asphalt inside the tank, making the temperature of the liquid asphalt more uniform.

[0118] The stirring assembly 6 includes a first stirring unit 61. The first stirring unit 61 includes a stirring pump 611 and a stirring paddle. The stirring pump 611 is located at the top of the housing, the stirring paddle is upright with one end extending into the housing, and the first stirring paddle 613 rotates under the drive of the stirring pump 611.

[0119] In some illustrative embodiments, a stirring pump 611 drives a stirring paddle to rotate. The first stirring assembly 6 may include a plurality of stirring pumps 611 and a plurality of first stirring paddles 613, with the plurality of stirring pumps 611 driving the first stirring paddles 613 to rotate in a one-to-one correspondence.

[0120] In some other illustrative embodiments, the first stirring unit 61 includes a stirring pump 611, a plurality of first stirring blades 613, and a transmission mechanism 612. The stirring pump 611 drives the plurality of first stirring blades 613 to rotate simultaneously via the transmission mechanism 612.

[0121] The transmission mechanism 612 includes a connecting rod and a gear.

[0122] In some illustrative embodiments, such as Figure 11 As shown, the stirring pump 611 can drive three first stirring blades 613 to rotate simultaneously via multiple connecting rods and multiple gears.

[0123] Specifically, a first bevel gear is fitted near the output end of the mixing pump 611, and the output end is connected to the first mixing blade. Second bevel gears are respectively provided at both ends of the first connecting rod, and one second bevel gear meshes with the first bevel gear. A third bevel gear is provided at the upper end of the second mixing blade, and the third bevel gear meshes with the other second bevel gear. In this way, the mixing pump 611 can drive the first mixing blade and the second mixing blade to rotate simultaneously.

[0124] The second connecting rod has a fourth bevel gear at each end. One fourth bevel gear meshes with the first bevel gear and is isolated from the second bevel gear (for example, the fourth bevel gear and the second bevel gear are respectively located at the two ends of the output end radially). The upper end of the third agitator has a fifth bevel gear, which meshes with another fourth bevel gear. In this way, the agitator pump 611 can drive the first agitator, the second agitator, and the third agitator to rotate simultaneously.

[0125] The shaft angle of a bevel gear can be 90°.

[0126] like Figure 11 As shown, the asphalt melting equipment may also include a second mixing unit 62. The second mixing unit 62 is spaced apart from the first mixing unit 61, the heating pipe, and the support frame.

[0127] The second stirring unit 62 includes a drive motor (not shown) and a second stirring paddle. The axial direction of the second rod of the second stirring paddle intersects the axial direction of the first rod of the first stirring paddle. For example, the axial direction of the second rod is orthogonal to the axial direction of the first rod.

[0128] The drive motor is located on the top of the housing, and the drive rod of the drive motor extends into the housing. A sixth bevel gear is provided at one end of the drive rod, and a seventh bevel gear is provided at one end of the second rod of the second mixing paddle. The sixth bevel gear meshes with the seventh bevel gear, changing the transmission direction of the drive motor and causing the second mixing paddle to rotate around the axis of the second rod, further mixing the liquid asphalt evenly.

[0129] like Figure 11 As shown, the asphalt melting equipment may also include an auxiliary heating component 7. The auxiliary heating component 7 includes an inlet pipe, an outlet pipe, and a coil.

[0130] The coil is located in the upper part of the chamber. Specifically, it can be located above the heating pipe. One end of the coil is connected to the inlet pipe, and the other end is connected to the outlet pipe. The heat-conducting medium (such as heat transfer oil) provided by the external heat source heats the chamber through the inlet pipe and the coil, then flows back to the heat source through the outlet pipe. It can be reheated by the heat source and then reheated through the inlet pipe and the coil to heat the chamber again, thereby increasing the melting rate of the asphalt.

[0131] There are multiple coils, arranged along a plane parallel to the horizontal plane. The cross-section of the coils is staggered with the cross-section of the filler inlet to prevent solid asphalt fed into the box from contacting the coils and thus avoiding damage to the coils.

[0132] In some illustrative embodiments, the number of coils can be three. It is understood that the embodiments of this invention are not limited to this. For example, the number of coils can also include any value among 1, 2, 4, etc.

[0133] The embodiments of the present invention have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the present invention, and all such substitutions and modifications should fall within the scope of the present invention.

Claims

1. An apparatus for melting asphalt, characterized by include: The box has an internal storage space and a filling port at the top. A heating component, at least partially installed within the containment space, is adapted to preheat the containment space and to heat the preheated asphalt in a solid or semi-solid state within the containment space, causing the asphalt to melt into a liquid state. A spraying assembly, installed on the housing, is suitable for spraying at least a portion of the liquid asphalt onto the solid or semi-solid asphalt within the containment space, thereby accelerating the melting of the solid or semi-solid asphalt. as well as A receiving component is installed between the filling port and the heating component. The receiving component is adapted to receive the solid or semi-solid asphalt fed from the filling port, thereby reducing the impact of the solid or semi-solid asphalt on the heating component.

2. The apparatus of claim 1, wherein, The spraying assembly includes: The liquid inlet pipe extends into the bottom of the containing space at one end; A circulating pump is connected to the other end of the inlet pipe; and The liquid outlet pipe extends into the upper part of the containing space at one end and is connected to the circulation pump at the other end. The liquid asphalt located at the bottom of the containment space is pumped in through the inlet pipe by the circulation pump and flows out through the outlet pipe to be sprayed onto the solid or semi-solid asphalt.

3. The apparatus of claim 2, wherein, The liquid outlet pipe includes: The main pipeline extends from the circulation pump to the upper part of the receiving space; and A branch pipe extends from the main pipe located above the accommodating space, in a direction perpendicular to the extension direction of the main pipe, to above the solid or semi-solid asphalt. The branch pipe has multiple injection holes spaced apart and directed toward the solid or semi-solid asphalt, through which the liquid asphalt is sprayed onto the solid or semi-solid asphalt.

4. The apparatus of claim 3, wherein, The portions of both the inlet pipe and the main pipe extending outside the tank body include: An internal conduit, suitable for guiding the flow of the liquid asphalt; and An outer pipe is fitted outside the inner pipe and forms a flow channel with the inner pipe; The outer pipe has a first opening and a second opening formed on its wall along its length. Both the first opening and the second opening are connected to the flow channel. The heat-conducting medium from the outside flows into the flow channel through the first opening and flows out through the second opening to provide heat to the inner pipe and prevent the liquid asphalt from solidifying inside the inner pipe.

5. The apparatus of claim 2, wherein, The spraying assembly also includes: A filter unit is installed on the inlet pipe and located at the front end of the circulation pump along the flow direction of the liquid asphalt. The filter unit is adapted to filter out impurities in the liquid asphalt before the liquid asphalt flows into the circulation pump.

6. The apparatus of any one of claims 1-5, wherein, The heating component includes: A support frame is installed within the receiving space; and The heating element is mounted in the receiving space by the support frame, and both ends of the heating element extend from the housing to communicate with the external medium supply component. The heat-conducting medium provided by the medium supply component flows into the heating tube from one end and out from the other end to provide heat to the containment space, thereby melting the solid or semi-solid asphalt.

7. The device according to claim 6, characterized in that, The support frame includes: Multiple mounting plates are arranged perpendicularly and at intervals to the extension direction of the heating tubes within the receiving space. Each mounting plate has multiple through holes, and each heating tube is disposed within the receiving space through multiple through holes. A flow channel is formed between the mounting plate and the bottom wall of the box to allow the liquid asphalt to flow from one side of the mounting plate to the other.

8. The apparatus of claim 7, wherein, The heating element includes: The liquid inlet is installed outside the housing. The heat-conducting medium from the medium supply assembly flows in through the liquid inlet. The inner diameter of the liquid inlet gradually decreases along the flow direction of the heat-conducting medium to increase the flow rate of the heat-conducting medium. A heating element is installed in the receiving space via the mounting plate, and the heat-conducting medium flowing in from the liquid inlet provides heat to the receiving space via the heating element. as well as The liquid outlet is installed outside the housing and is adapted to transport the heat-conducting medium from the heating unit back to the medium supply assembly. The inner diameter of the liquid outlet gradually increases along the flow direction of the heat-conducting medium.

9. The apparatus of any one of claims 1-5, wherein, The filling ports are multiple and spaced apart at the top of the housing; The receiving component includes: Multiple receiving plates are arranged horizontally and at intervals between the multiple filling ports and the heating assembly.

10. The apparatus of any one of claims 1-5, wherein, Also includes: A mixing assembly, wherein the mixing paddle of the mixing assembly is disposed inside the tank, is suitable for mixing liquid asphalt inside the tank.

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