A burner for hot asphalt recycling

Abstract

This utility model discloses a burner for asphalt thermal recycling, belonging to the technical field of asphalt combustion equipment. It includes a mounting frame, with a burner body mounted at one end of the frame. A combustion chamber is mounted at one end of the burner body, and a flame nozzle is provided at the nozzle of the combustion chamber. Several sets of nozzles are provided on the outer surface of the flame nozzle. An oil storage tank is located at the bottom of the burner body, and an oil delivery mechanism for extracting and filtering fuel is installed at the bottom of the oil storage tank. The other end of the oil delivery mechanism is connected to the oil inlet of the burner body. A rotating assembly is mounted at the other end of the mounting frame to drive the flame nozzle to rotate. The rotating assembly drives the flame nozzle to rotate when the flame is ejected, causing the ejected flame to form a fire ring that evenly burns the surrounding asphalt, thus ensuring uniform heating of the asphalt, increasing the asphalt's heating rate, and improving the processing efficiency of asphalt thermal recycling.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt combustion equipment, specifically to a burner for asphalt thermal recycling. Background Technology

[0002] Asphalt recycling is a technology that utilizes waste asphalt to recycle, heat, crush, and screen it using specialized recycling equipment. The recycled asphalt is then mixed with recycling agents, new asphalt, and new aggregates in a certain proportion to form a mixture that meets specific performance requirements for reuse.

[0003] Existing combustion equipment for asphalt recycling typically uses a burner inside a combustion mixing tube to burn the asphalt, along with a mixing structure to stir it. However, the burner only heats the asphalt in the combustion tank with a single flame, resulting in uneven heating of the asphalt. It cannot heat up quickly in a short time and requires a lot of time to stir the asphalt, leading to a decrease in the processing efficiency of asphalt thermal recycling.

[0004] According to announcement number CN211011355U, a low-NOx burner for an asphalt mixing plant includes a burner body. The burner body has a first air inlet, a first air outlet, and a combustion fan. A plurality of fuel nozzles are arranged in a ring array on the inner wall of the air outlet end of the burner body. A plurality of discharge holes are evenly distributed on each fuel nozzle. A fuel channel is provided on the burner body, and the fuel nozzles are connected to the fuel channel. An atomizing plate is provided between the fuel nozzles and the first air outlet. An atomizing port is provided at the center of the atomizing plate. A plurality of blades are arranged in a ring on the atomizing plate, with gaps between the blades for gas to pass through. An adjustment device is provided inside the burner body for adjusting the distance between the atomizing plate and the fuel nozzles, and the distance between the atomizing plate and the burner body. An igniter is provided on the inner wall of the burner body at the fuel nozzle.

[0005] As described above, the low-NOx burner used in asphalt mixing plants heats the asphalt in the combustion tank with a single flame, resulting in uneven heating of the asphalt. This makes it impossible to heat up quickly in a short time, requiring more time for asphalt mixing, which leads to a decrease in the processing efficiency of asphalt thermal recycling. Therefore, we need to propose a burner for asphalt thermal recycling. Utility Model Content

[0006] The purpose of this invention is to provide a burner for asphalt thermal recycling. Through the cooperation of the burner pipe and the burner nozzle, the flame injected from the burner nozzle is sprayed outwards to the periphery of the burner pipe. The rotating component drives the burner pipe to rotate when the flame is injected, so that the injected flame forms a fire ring that evenly burns the surrounding asphalt. This results in uniform heating of the asphalt, increases the heating rate of the asphalt, and improves the processing efficiency of asphalt thermal recycling, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a burner for hot asphalt recycling, comprising a mounting frame, a burner body mounted on one end of the mounting frame, a combustion chamber mounted on one end of the burner body, a flame nozzle provided at the nozzle of the combustion chamber, a plurality of flame tips provided on the outer surface of the flame nozzle, an oil storage tank provided at the bottom of the burner body, an oil delivery mechanism for extracting and filtering fuel oil installed at the bottom of the oil storage tank, the other end of the oil delivery mechanism being connected to the oil inlet of the burner body, and a rotating component for driving the flame nozzle to rotate installed at the other end of the mounting frame.

[0008] Preferably, the outer surface of the flame tube is provided with a high-temperature resistant metal protective mesh, and several sets of flame nozzles are all arranged in the inner cavity of the high-temperature resistant metal protective mesh.

[0009] Preferably, the oil delivery mechanism includes an oil pump, the oil pump's inlet is connected to an oil inlet pipe, the other end of the oil inlet pipe is connected to the inner cavity of an oil storage tank, the oil pump's delivery port is connected to an oil delivery pipe, the other end of the oil delivery pipe is connected to a filter structure, and the inner cavity of the filter structure is connected to an oil inlet.

[0010] Preferably, the filter structure includes a filter tube with bolt holes on its surface. The filter tube is connected to the oil supply pipe and the oil inlet by bolts, and a metal filter screen is provided in the inner cavity of the filter tube.

[0011] Preferably, a support rod is rotatably connected to one end of the metal filter screen near the oil delivery pipe, and several sets of connecting plates are provided on the outer surface of the support rod, and the several sets of connecting plates are arranged in a turbine shape.

[0012] Preferably, the surface of the connecting plate is provided with a cleaning brush, and the surface of the cleaning brush is in contact with the surface of the metal filter screen.

[0013] Preferably, the rotating assembly includes a drive motor, which is fixedly mounted on the upper surface of the mounting bracket. The output shaft of the drive motor is keyed to a gear, which meshes with an external gear ring. One end of the external gear ring is connected to the flame tube, and the other end of the external gear ring is rotatably connected to the flame nozzle via a rotating shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model provides a burner for asphalt thermal recycling. Through the cooperation of the flame tube and the flame nozzle, the flame sprayed from the flame nozzle is sprayed to the surrounding area of ​​the flame tube. The rotating component drives the flame tube to rotate when the flame is sprayed, so that the flame forms a fire ring to burn the surrounding asphalt evenly, thereby making the asphalt heat up evenly, increasing the heating rate of the asphalt, and improving the processing efficiency of asphalt thermal recycling.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure for disassembling the high-temperature resistant metal protective mesh of the flamethrower tube of this utility model;

[0020] Figure 4 This is a schematic diagram of the oil delivery mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of a partial cross-section of the filter tube of this utility model.

[0022] In the diagram: 1. Mounting bracket; 2. Burner body; 3. Combustion chamber; 4. Flame tube; 5. Flame nozzle; 6. Oil reservoir; 7. Oil delivery mechanism; 71. Oil pump; 72. Oil inlet pipe; 73. Oil delivery pipe; 74. Filter pipe; 75. Metal filter screen; 8. Rotating assembly; 81. Drive motor; 82. Gear; 83. External gear ring; 9. High-temperature resistant metal protective mesh; 10. Support rod; 11. Connecting plate; 12. Cleaning brush. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a burner for hot asphalt recycling, including a mounting frame 1, a burner body 2 mounted on one end of the mounting frame 1, a combustion chamber 3 mounted on one end of the burner body 2, a flame nozzle 4 provided at the nozzle of the combustion chamber 3, a plurality of flame tips 5 provided on the outer surface of the flame nozzle 4, an oil storage tank 6 provided at the bottom of the burner body 2, an oil delivery mechanism 7 for extracting and filtering fuel oil installed at the bottom of the oil storage tank 6, the other end of the oil delivery mechanism 7 being connected to the oil inlet of the burner body 2, and a rotating component 8 for driving the flame nozzle 4 to rotate at the other end of the mounting frame 1;

[0025] Specifically, the burner is connected to the asphalt mixing tank. The burner body 2 is turned on, and the fuel delivery mechanism 7 draws fuel from the fuel storage tank 6, filters it, and sends it into the fuel inlet. Then, the combustion chamber 3 sends the flame into the flame tube 4 through the nozzle. The flame tube 4 sprays flames and heats the surrounding area through several sets of nozzles 5. Then, the rotating component 8 is started to drive the flame tube 4 to rotate, so that the flames form a fire ring and burn the surrounding asphalt evenly. This makes the asphalt heat up evenly, increases the heating rate of the asphalt, and improves the processing efficiency of asphalt thermal recycling.

[0026] The outer surface of the flame tube 4 is provided with a high-temperature resistant metal protective mesh 9, and several sets of flame nozzles 5 are all set in the inner cavity of the high-temperature resistant metal protective mesh 9. The high-temperature resistant metal protective mesh 9 protects the several sets of flame nozzles 5 and prevents them from being damaged when the mixed asphalt falls.

[0027] The fuel delivery mechanism 7 includes a fuel pump 71, an inlet port of the fuel pump 71 connected to an inlet pipe 72, the other end of the inlet pipe 72 connected to the inner cavity of the fuel tank 6, a delivery port of the fuel pump 71 connected to a delivery pipe 73, the other end of the delivery pipe 73 connected to a filter structure, the inner cavity of the filter structure connected to the fuel inlet, the fuel pump 71 is started to draw fuel from the fuel tank 6 through the inlet pipe 72, and then the fuel is sent into the filter structure for filtration through the delivery pipe 73, and the filtered fuel is sent into the fuel inlet.

[0028] The filter structure includes a filter tube 74, with bolt holes on its surface. The filter tube 74 is connected to the fuel supply pipe 73 and the fuel inlet via bolts. A metal filter screen 75 is installed inside the filter tube 74. The filter tube 74 allows for disassembly from the fuel supply pipe 73 and the fuel inlet, facilitating replacement and cleaning. The metal filter screen 75 filters impurities in the fuel, improving fuel combustion efficiency.

[0029] A support rod 10 is rotatably connected to one end of the metal filter screen 75 near the fuel supply pipe 73. Several sets of connecting plates 11 are provided on the outer surface of the support rod 10. The several sets of connecting plates 11 are combined in a turbine shape. The support rod 10 and the connecting plates 11 cooperate to form a turbine, so that the turbine rotates when the fuel passes through, which helps to increase the speed of the fuel passing through the filter pipe 74.

[0030] A cleaning brush 12 is provided on the surface of the connecting plate 11. The surface of the cleaning brush 12 is in contact with the surface of the metal filter screen 75. By setting the cleaning brush 12, the cleaning brush 12 can be rotated when the connecting plate 11 rotates to brush the impurities on the surface of the metal filter screen 75, so as to avoid the accumulation of impurities and blockage of the metal filter screen 75.

[0031] The rotating assembly 8 includes a drive motor 81, which is fixedly mounted on the upper surface of the mounting bracket 1. The output shaft of the drive motor 81 is keyed to a gear 82, which meshes with an external gear ring 83. One end of the external gear ring 83 is connected to the flame tube 4, and the other end of the external gear ring 83 is rotatably connected to the flame nozzle through a rotating shaft. When the drive motor 81 is started, it drives the gear 82 to rotate, which in turn drives the flame tube 4 to rotate through the external gear ring 83.

[0032] In practical use: Connect the burner to the asphalt mixing tank, turn on the burner body 2, the oil pump 71 draws fuel from the oil storage tank 6 through the oil inlet pipe 72, and then sends the fuel into the filter pipe 74 through the oil delivery pipe 73. The metal filter screen 75 filters the impurities in the fuel and sends it into the oil inlet. The combustion chamber 3 sprays flames into the flame pipe 4 through the flame nozzle. The flames are sprayed out through the flame nozzle 5 to burn and heat the asphalt. Start the drive motor 81 to drive the gear 82 to rotate, so that the gear 82 drives the flame pipe 4 to rotate through the external gear ring 83, so that the flame around the flame pipe 4 rotates into a fire ring shape to burn the asphalt, thereby making the asphalt heat evenly heated, increasing the heating rate of the asphalt, and improving the processing efficiency of asphalt thermal recycling.

[0033] 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 burner for thermal recycling of asphalt, characterized in that, Includes a mounting bracket (1), one end of which is mounted a burner body (2), and one end of which is mounted a combustion chamber (3). The nozzle of the combustion chamber (3) is provided with a flame pipe (4), and the outer surface of the flame pipe (4) is provided with several sets of flame nozzles (5). The burner body (2) is provided with an oil storage tank (6) at the bottom end. An oil delivery mechanism (7) for extracting and filtering fuel is installed at the bottom end of the oil storage tank (6). The other end of the oil delivery mechanism (7) is connected to the oil inlet of the burner body (2). The other end of the mounting bracket (1) is equipped with a rotating component (8) for driving the flamethrower tube (4) to rotate.

2. The burner for asphalt thermal recycling according to claim 1, characterized in that: The outer surface of the flame tube (4) is provided with a high-temperature resistant metal protective mesh (9), and several sets of flame nozzles (5) are all located in the inner cavity of the high-temperature resistant metal protective mesh (9).

3. The burner for asphalt thermal recycling according to claim 1, characterized in that: The oil delivery mechanism (7) includes an oil pump (71), the oil inlet of the oil pump (71) is connected to an oil inlet pipe (72), the other end of the oil inlet pipe (72) is connected to the inner cavity of the oil storage tank (6), the oil delivery hole of the oil pump (71) is connected to an oil delivery pipe (73), the other end of the oil delivery pipe (73) is connected to a filter structure, and the inner cavity of the filter structure is connected to the oil inlet.

4. A burner for asphalt thermal recycling according to claim 3, characterized in that: The filter structure includes a filter tube (74), the surface of which is provided with bolt holes. The filter tube (74) is connected to the oil supply pipe (73) and the oil inlet by bolts respectively. The inner cavity of the filter tube (74) is provided with a metal filter screen (75).

5. A burner for asphalt thermal recycling according to claim 4, characterized in that: The metal filter screen (75) is rotatably connected to a support rod (10) at one end near the oil delivery pipe (73). Several sets of connecting plates (11) are provided on the outer surface of the support rod (10), and the several sets of connecting plates (11) are arranged in a turbine shape.

6. A burner for asphalt thermal recycling according to claim 5, characterized in that: The surface of the connecting plate (11) is provided with a cleaning brush (12), and the surface of the cleaning brush (12) is in contact with the surface of the metal filter screen (75).

7. A burner for asphalt thermal recycling according to claim 1, characterized in that: The rotating assembly (8) includes a drive motor (81), which is fixedly mounted on the upper surface of the mounting bracket (1). The output shaft of the drive motor (81) is keyed to a gear (82), which meshes with an external gear ring (83). One end of the external gear ring (83) is connected to the flame tube (4), and the other end of the external gear ring (83) is rotatably connected to the flame nozzle through a rotating shaft.

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