Asphalt heating and melting device for municipal road construction

Abstract

The application relates to the technical field of municipal construction, and discloses an asphalt heating and melting device for municipal road construction, which comprises a vehicle plate, a tank body, a stirring mechanism, a hot melting mechanism, a reflux mechanism and a sealing cover. The hot melting mechanism comprises an oil storage container fixedly connected to the top of the vehicle plate. The top of the oil storage container is fixedly connected with a closed box. A first electric heating wire is fixedly arranged in the closed box. The first electric heating wire is two. An oil pump is fixedly arranged on the top of the oil storage container. The closed circulation is formed by the oil storage container, the oil pump, a conveying pipe and a threaded pipe. The heat-conducting oil is heated by the first electric heating wire. The threaded pipe surrounding the tank body is designed to increase the heat exchange area, so that the asphalt raw material can be uniformly and efficiently heated. The second electric heating wire is arranged in the fixed box on the sealing cover. The second electric heating wire is combined with the mesh cover to radiantly heat the asphalt raw material from the top, so that the melting speed is accelerated.

Description

Technical Field

[0001] This application relates to the field of municipal construction technology, specifically to an asphalt heating and melting device for municipal road construction. Background Technology

[0002] Asphalt concrete is a commonly used road surface material in municipal engineering. Its main components are asphalt and aggregates. Asphalt concrete has the characteristics of water resistance, wear resistance, and skid resistance, and can meet the requirements of different roads. When selecting asphalt concrete, reasonable selection should be made according to factors such as road usage, traffic volume, and climate conditions to ensure the service life and safety of the road. In conclusion, the selection and use of municipal engineering materials have an important impact on project quality, safety, and environmental protection. When selecting municipal engineering materials, relevant standards and specifications should be strictly followed to ensure project quality and safety.

[0003] However, existing methods for hot-melting asphalt raw materials often lack dual heating with both heating wires and heat transfer oil. This heating technology would bring significant and efficient hot-melting effects. In a dual heating system, the heating wires and heat transfer oil each perform their respective functions and work together. The heating wires can achieve rapid heating, directly heating the asphalt raw materials locally to quickly break down the solid structure of the raw materials and form a core area for hot melting. Meanwhile, the heat transfer oil, with its excellent thermal conductivity, flows in a closed circulation pipe, surrounding the tank containing the asphalt raw materials like a warm "heat blanket," completely enveloping the raw materials and preventing local overheating or uneven heating. The combination of the two allows the asphalt raw materials to achieve uniform hot melting in a short time. To solve the above problems, an asphalt heating and melting device for municipal road construction is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an asphalt heating and melting device for municipal road construction, which has advantages such as dual high-efficiency hot melting and solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, this application provides the following technical solution: an asphalt heating and melting device for municipal road construction, comprising a vehicle platform, a tank, a mixing mechanism, a hot-melting mechanism, a reflux mechanism, and a sealing cover. The hot-melting mechanism includes an oil storage container fixedly connected to the top of the vehicle platform. A sealed box is fixedly connected to the top of the oil storage container. Two first heating wires are fixedly installed inside the sealed box. An oil pump is fixedly installed on the top of the oil storage container. A delivery pipe is fixedly connected to the top of the oil pump. A threaded pipe is fixedly connected to one end of the delivery pipe. A threaded groove is formed on the surface of the tank. The threaded pipe is laid inside the threaded groove. An oil injection hole is formed on the top of the oil storage container. A sealing plug is snapped into the inside of the oil injection hole.

[0006] The top of the sealing cover is fixedly connected to a fixing box, and there are two fixing boxes. A second heating wire is fixedly installed inside each of the two fixing boxes. There are two sets of the second heating wire. A mesh cover is provided inside the sealing cover.

[0007] The above scheme, by setting up a hot-melting mechanism, can form a closed loop with oil storage container, oil pump, delivery pipe and threaded pipe. The heat transfer oil is heated by the first electric heating wire. The threaded pipe design around the tank increases the heat exchange area and achieves uniform and efficient heating. The fixed box on the sealed cover has a built-in second electric heating wire. With the mesh cover design, the asphalt raw material can be radiated and heated from above to accelerate the melting speed.

[0008] Furthermore, the top of the vehicle platform is fixedly connected to a support column, there are four support columns, the top of the four support columns are fixedly connected to a support plate, the inside of the support plate is fixedly connected to a tank, the top of the tank is covered with a sealing cap, the sealing cap and both sides of the tank are fixedly connected to magnetic blocks, there are two sets of magnetic blocks, and the top of the sealing cap is fixedly connected to a fixing column.

[0009] With the above scheme, four support columns are evenly distributed between the vehicle plate and the support plate to form a stable rectangular support frame, effectively distributing the weight of the tank and ensuring the stability of the device during movement and operation. Two sets of magnetic blocks are used to achieve quick adsorption and fixation of the sealing cover to the tank. Compared with traditional bolt connection, the disassembly and assembly efficiency is increased by about 50%, and it can adapt to frequent opening and closing needs. The setting of the fixing column can facilitate the opening of the sealing cover.

[0010] Furthermore, the stirring mechanism includes a drive motor fixedly mounted on the bottom of the tank via a mounting bracket. A bearing is fixedly connected inside the tank, and a rotating shaft is rotatably connected inside the bearing. The bottom end of the rotating shaft is fixedly connected to the output shaft of the drive motor, and a stirring rod is fixedly connected to the surface of the rotating shaft. The stirring rod consists of several rods.

[0011] The above solution, by setting up a mixing mechanism, can drive multiple mixing rods to rotate with a drive motor at the bottom, ensuring uniform heating during the asphalt melting process and avoiding local overheating or clumping.

[0012] Furthermore, the reflux mechanism includes a reflux pipe fixedly connected to one end of the threaded pipe, a first solenoid valve fixedly installed on the surface of the reflux pipe, a filter pipe threadedly connected to the surface of the reflux pipe, a filter screen fixedly connected inside the filter pipe, and the other end of the reflux pipe fixedly connected to the side of the oil storage container.

[0013] The above scheme, by setting up a reflux mechanism, enables the filter tube and filter screen to remove impurities from the heat transfer oil, ensuring the stability and heating efficiency of the circulation system. At the same time, the first solenoid valve can control the reflux flow rate, and the oil is subsequently returned to the interior of the oil storage container through the reflux pipe, forming a recycling system.

[0014] Furthermore, a temperature sensor is fixedly installed on the top of the oil storage container, and a transparent plastic plate is provided on the side of the oil storage container.

[0015] The above solution involves equipping the oil storage container with a temperature sensor to monitor the temperature of the heat transfer oil in real time. This, combined with the power adjustment of the first heating wire, enables precise temperature control. A transparent plastic panel visually displays the amount of oil in the storage container, facilitating timely replenishment of the heat transfer oil.

[0016] Furthermore, an oil drain pipe is fixedly connected to the side of the oil storage container, and a second solenoid valve is fixedly installed on the surface of the oil drain pipe.

[0017] The above scheme allows the drain pipe and the second solenoid valve to be used to drain heat transfer oil that has been used for a long time.

[0018] Furthermore, four omnidirectional brake wheels are fixedly installed at the bottom of the vehicle platform, and a pusher is fixedly connected to the top of the vehicle platform.

[0019] With the above solution, the four omnidirectional brake wheels and push handles at the bottom of the vehicle platform enable the device to be quickly moved to the construction site, adapting to the needs of multi-point operations on municipal roads.

[0020] Furthermore, a metering pump is fixedly installed at the bottom of the tank, and a discharge pipe is fixedly connected to the bottom end of the metering pump.

[0021] Through the above scheme, the metering pump accurately controls the output to prevent asphalt from overflowing, and the discharge pipe can guide the asphalt into an external storage container for storage.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This is an asphalt heating and melting device for municipal road construction. By setting up a heat melting mechanism, it can form a closed loop with an oil storage container, an oil pump, a delivery pipe and a threaded pipe. It uses a first electric heating wire to heat the heat transfer oil. The threaded pipe design around the tank increases the heat exchange area and achieves uniform and efficient heating. The fixed box on the sealed cover has a second electric heating wire built in it. With the mesh cover design, it can radiate heat to the asphalt raw material from above and accelerate the melting speed. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view structure of this application;

[0025] Figure 2 This is a frontal cross-sectional view of the stirring mechanism in this application;

[0026] Figure 3 This is a bottom view cross-sectional structural diagram of the stirring mechanism in this application;

[0027] Figure 4 for Figure 1 Top view cross-sectional structure diagram of the central sealing cap;

[0028] Figure 5 This is a side cross-sectional view of the hot melt mechanism and the reflow mechanism in this application.

[0029] Figure 6 This is a side view exploded cross-sectional schematic diagram of the reflux mechanism in this application.

[0030] In the picture:

[0031] 1. Vehicle platform; 2. Support column; 3. Support plate; 4. Tank body; 5. Stirring mechanism; 501. Drive motor; 502. Bearing; 503. Rotating shaft; 504. Stirring rod; 6. Hot melt mechanism; 601. Oil storage container; 602. Sealed box; 603. First heating wire; 604. Oil pump; 605. Delivery pipe; 606. Threaded pipe; 7. Return mechanism; 701. Return pipe; 702. First solenoid valve; 703. Filter pipe; 704. Filter screen; 8. Temperature sensor; 9. Oil discharge pipe; 10. Second solenoid valve; 11. Plastic transparent plate; 12. Wheel; 13. Push handle; 14. Sealing cover; 15. Sealing plug; 16. Magnetic block; 17. Metering pump; 18. Discharge pipe; 19. Fixing box; 20. Second heating wire; 21. Mesh cover; 22. Fixing column; 23. Oil injection hole; 24. Threaded groove. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 4 and Figure 5This embodiment of an asphalt heating and melting device for municipal road construction includes a vehicle platform 1, a tank 4, a mixing mechanism 5, a hot melting mechanism 6, a reflux mechanism 7, and a sealing cover 14. The hot melting mechanism 6 includes an oil storage container 601 fixedly connected to the top of the vehicle platform 1. A closed box 602 is fixedly connected to the top of the oil storage container 601. Two first heating wires 603 are fixedly installed inside the closed box 602. An oil pump 604 is fixedly installed on the top of the oil storage container 601. A delivery pipe 605 is fixedly connected to the top of the oil pump 604. A threaded pipe 606 is fixedly connected to one end of the delivery pipe 605. A threaded groove 24 is opened on the surface of the tank 4. The threaded pipe 606 is laid inside the threaded groove 24. An oil injection hole 23 is opened on the top of the oil storage container 601. A sealing plug 15 is snapped into the inside of the oil injection hole 23.

[0034] The top of the sealing cover 14 is fixedly connected to a fixing box 19. There are two fixing boxes 19, and a second heating wire 20 is fixedly installed inside each of the two fixing boxes 19. There are two sets of second heating wires 20. The inside of the sealing cover 14 is provided with a mesh cover 21. There are two mesh covers 21. By setting the heat melting mechanism 6, a closed loop can be formed by the oil storage container 601, oil pump 604, delivery pipe 605 and threaded pipe 606. The heat transfer oil is heated by the first heating wire 603. The design of the threaded pipe 606 around the tank body 4 increases the heat exchange area and achieves uniform and efficient heating. The fixing box 19 on the sealing cover 14 has a built-in second heating wire 20. With the design of the mesh cover 21, the asphalt raw material can be radiated and heated from above to accelerate the melting speed.

[0035] Please see Figure 1 , Figure 2 and Figure 4The top of the vehicle platform 1 is fixedly connected to four support columns 2. Support plates 3 are fixedly connected to the top of the four support columns 2. A tank 4 is fixedly connected inside the support plates 3. A sealing cover 14 overlaps the top of the tank 4. Magnetic blocks 16 are fixedly connected to both sides of the sealing cover 14 and the tank 4. Two sets of magnetic blocks 16 are fixedly connected to the top of the sealing cover 14. A fixing column 22 is fixedly connected to the top of the sealing cover 14. The four support columns 2 are evenly distributed between the vehicle platform 1 and the support plates 3, forming a stable rectangular support frame that effectively distributes the weight of the tank 4, ensuring the stability of the device during movement and operation. The two sets of magnetic blocks 16 achieve rapid adsorption and fixation between the sealing cover 14 and the tank 4. Compared to traditional bolt connections, this method significantly improves the efficiency of assembly and disassembly. The efficiency is increased by about 50%, and it can adapt to the need for frequent opening and closing. The setting of the fixed column 22 can facilitate the opening of the sealing cover 14. The mixing mechanism 5 includes a drive motor 501 fixedly installed at the bottom of the tank 4 by a mounting bracket. A bearing 502 is fixedly connected inside the tank 4. A rotating shaft 503 is rotatably connected inside the bearing 502. The bottom end of the rotating shaft 503 is fixedly connected to the output shaft of the drive motor 501. A mixing rod 504 is fixedly connected to the surface of the rotating shaft 503. There are several mixing rods 504. By setting the mixing mechanism 5, the drive motor 501 at the bottom can drive multiple mixing rods 504 to rotate, ensuring uniform heating during the asphalt melting process and avoiding local overheating or clumping.

[0036] Please see Figure 1 , Figure 5 and Figure 6 The reflux mechanism 7 includes a reflux pipe 701 fixedly connected to one end of the threaded pipe 606. A first solenoid valve 702 is fixedly mounted on the surface of the reflux pipe 701. A filter pipe 703 is threadedly connected to the surface of the reflux pipe 701. A filter screen 704 is fixedly connected inside the filter pipe 703. The other end of the reflux pipe 701 is fixedly connected to the side of the oil storage container 601. By setting the reflux mechanism 7, the filter pipe 703 and the filter screen 704 can remove impurities from the heat transfer oil, ensuring the stability and heating efficiency of the circulation system. A solenoid valve 702 controls the return flow rate, which is then returned to the oil storage container 601 via the return pipe 701, forming a recycling system. A temperature sensor 8 is fixedly installed on the top of the oil storage container 601, and a plastic transparent plate 11 is provided on the side of the oil storage container 601. The oil storage container 601 is equipped with a temperature sensor 8 to monitor the temperature of the heat transfer oil in real time. The temperature is precisely controlled in conjunction with the power adjustment of the first heating wire 603. The plastic transparent plate 11 displays the amount of oil in the oil storage container 601, which facilitates timely replenishment of heat transfer oil.

[0037] Please see Figure 1 , Figure 3 and Figure 5An oil drain pipe 9 is fixedly connected to the side of the oil storage container 601. A second solenoid valve 10 is fixedly installed on the surface of the oil drain pipe 9. The oil drain pipe 9 and the second solenoid valve 10 are used to drain the heat transfer oil that has been used for a long time. Four universal brake wheels 12 are fixedly installed at the bottom of the vehicle platform 1. A push handle 13 is fixedly connected to the top of the vehicle platform 1. The four universal brake wheels 12 and the push handle 13 at the bottom of the vehicle platform 1 enable the device to be quickly moved to the construction site to meet the needs of multi-point operation on municipal roads. A metering pump 17 is fixedly installed at the bottom of the tank body 4. A discharge pipe 18 is fixedly connected to the bottom end of the metering pump 17. The metering pump 17 accurately controls the discharge amount to avoid asphalt overflow. The discharge pipe 18 can guide the asphalt into an external storage container for storage.

[0038] In this embodiment, an asphalt heating and melting device for municipal road construction is described. It should be noted that by setting up a heat melting mechanism 6, a closed loop can be formed by an oil storage container 601, an oil pump 604, a delivery pipe 605, and a threaded pipe 606. The heat transfer oil is heated by a first heating wire 603. The threaded pipe 606 surrounding the tank body 4 is designed to increase the heat exchange area, achieving uniform and efficient heating. The fixing box 19 on the sealing cover 14 has a built-in second heating wire 20. With the design of the mesh cover 21, the asphalt raw material can be radiated and heated from above, accelerating the melting speed.

[0039] The working principle of the above embodiment is as follows: First, push the pusher 13 to move the wheel 12 to the use position of the whole device. Then, add heat transfer oil into the oil storage container 601 through the oil injection hole 23. After confirming the oil density through the plastic transparent plate 11, the sealing plug 15 is then fastened. Then, hold the fixing column 22 to open the sealing cover 14, pour asphalt raw material into the tank 4, close the sealing cover 14, and fix it with the magnetic block 16. Then, start the first electric heating wire 603 to heat the heat transfer oil. The degree of heating can be observed through the data transmitted by the temperature sensor 8. After heating is completed, the oil pump 604 introduces the high temperature heat transfer oil into the threaded pipe 606 on the surface of the tank 4 through the delivery pipe 605 (the threaded pipe 606 is embedded in the threaded groove 24 on the surface of the tank 4), which flows around the tank 4. The asphalt raw material in the tank 4 is heated by large-area heat exchange. At the same time, the second electric heating wire 20 built into the fixing box 19 on the sealing cover 14 is also started. Then, the asphalt raw material in the tank 4 is irradiated downward through the mesh cover 21. The material is heated from both top and bottom to accelerate the melting speed. During the hot melting process, the drive motor 501 operates, which in turn drives the rotating shaft 503 to rotate multiple stirring rods 504 to stir the asphalt during the melting process, ensuring uniform heat distribution and avoiding asphalt clumping or overheating and carbonization due to local high temperature of the heat transfer oil. This completes the asphalt melting operation. When discharging, the personnel can place the external storage container at the discharge pipe 18, and then the metering pump 17 operates to guide the asphalt through the discharge pipe 18 into the external storage container for storage. When the heat transfer oil becomes too cold, the flow rate of the return pipe 701 is adjusted by the first solenoid valve 702 to control the circulation speed of the heat transfer oil. Then, it first passes through the filter screen 704 in the filter pipe 703 to remove impurities (such as asphalt debris, metal particles, etc.) generated by long-term use in the oil, preventing impurities from clogging the pipe or affecting the heating efficiency. After that, the filtered heat transfer oil returns to the oil storage container 601, mixes with the newly replenished heat transfer oil, and is heated again to form a sustainable circulation system.

[0040] After a period of use, place the external waste box at the oil drain pipe 9, and then operate the second solenoid valve 10 to guide the old oil through the oil drain pipe 9 into the external waste box. Then add new oil. This makes it convenient to replace the heat transfer oil regularly. After that, unscrew the filter tube 703 and clean the impurities on the filter screen 704.

[0041] 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.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An asphalt heating and melting device for municipal road construction, comprising a platform (1), a tank (4), a mixing mechanism (5), a hot melting mechanism (6), a reflux mechanism (7), and a sealing cap (14), characterized in that: The hot melt mechanism (6) includes an oil storage container (601) fixedly connected to the top of the vehicle board (1). A closed box (602) is fixedly connected to the top of the oil storage container (601). A first heating wire (603) is fixedly installed inside the closed box (602). There are two first heating wires (603). An oil pump (604) is fixedly installed on the top of the oil storage container (601). A delivery pipe (605) is fixedly connected to the top of the oil pump (604). A threaded pipe (606) is fixedly connected to one end of the delivery pipe (605). A threaded groove (24) is opened on the surface of the tank (4). The threaded pipe (606) is laid inside the threaded groove (24). An oil injection hole (23) is opened on the top of the oil storage container (601). A sealing plug (15) is snapped into the inside of the oil injection hole (23). The top of the sealing cover (14) is fixedly connected to a fixing box (19), there are two fixing boxes (19), and a second heating wire (20) is fixedly installed inside each of the two fixing boxes (19). There are two sets of the second heating wire (20), and a mesh cover (21) is provided inside each of the sealing cover (14). There are two mesh covers (21).

2. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: The top of the vehicle platform (1) is fixedly connected to a support column (2), there are four support columns (2), the top of the four support columns (2) is fixedly connected to a support plate (3), the inside of the support plate (3) is fixedly connected to a tank (4), the top of the tank (4) is covered with a sealing cover (14), the sealing cover (14) and both sides of the tank (4) are fixedly connected to magnetic blocks (16), there are two sets of magnetic blocks (16), and the top of the sealing cover (14) is fixedly connected to a fixing column (22).

3. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: The stirring mechanism (5) includes a drive motor (501) fixedly mounted on the bottom of the tank (4) by a mounting bracket. A bearing (502) is fixedly connected inside the tank (4). A rotating shaft (503) is rotatably connected inside the bearing (502). The bottom end of the rotating shaft (503) is fixedly connected to the output shaft of the drive motor (501). A stirring rod (504) is fixedly connected to the surface of the rotating shaft (503). There are several stirring rods (504).

4. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: The reflux mechanism (7) includes a reflux pipe (701) fixedly connected to one end of a threaded pipe (606), a first solenoid valve (702) fixedly installed on the surface of the reflux pipe (701), a filter pipe (703) threadedly connected to the surface of the reflux pipe (701), a filter screen (704) fixedly connected inside the filter pipe (703), and the other end of the reflux pipe (701) fixedly connected to the side of an oil storage container (601).

5. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: A temperature sensor (8) is fixedly installed on the top of the oil storage container (601), and a plastic transparent plate (11) is provided on the side of the oil storage container (601).

6. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: The oil storage container (601) is fixedly connected to the side of an oil drain pipe (9), and a second solenoid valve (10) is fixedly installed on the surface of the oil drain pipe (9).

7. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: The bottom of the vehicle platform (1) is fixedly equipped with four universal brake wheels (12), and the top of the vehicle platform (1) is fixedly connected with a pusher (13).

8. The asphalt heating and melting device for municipal road construction according to claim 1, characterized in that: A metering pump (17) is fixedly installed at the bottom of the tank (4), and a discharge pipe (18) is fixedly connected to the bottom end of the metering pump (17).

Images