Emulsified asphalt heating device

Abstract

The utility model provides an emulsified asphalt heating device which comprises an air heater, a tank body and a heating unit, the air heater introduces hot air into an air inlet pipe, and heat is uniformly transferred to emulsified asphalt through a coil pipe. A stirring assembly in the device is composed of a sleeve, a plurality of stirrers, arc-shaped fan blades, a guide cylinder and the like, and the stirrers are driven to rotate under the action of airflow, so that emulsified asphalt is effectively stirred, and layering is avoided. By optimizing the structural design of the coil pipe and the airflow channel, hot air can be uniformly distributed, the heating process of emulsified asphalt is accelerated, and meanwhile, the heating efficiency is improved. Due to the design of the stirring assembly, the emulsified asphalt is always kept uniform in the heating process, and the defects of non-uniform heating and insufficient stirring possibly occurring in a traditional heating device are overcome. In addition, the device can reduce energy waste and achieve an energy-saving effect by accurately controlling the gas flow and the stirring force. The device has the advantages of reasonable structure, simplicity and convenience in operation and good heating and stirring effects.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsified asphalt heating equipment, in particular to an emulsified asphalt heating device. Background Art

[0002] Emulsified asphalt, a material commonly used in road construction and maintenance, has a wide range of applications, particularly in road paving, surface treatment, and cold-mix asphalt. Emulsified asphalt, primarily composed of asphalt, water, and an emulsifier, offers excellent workability and adaptability, can be applied at relatively low temperatures, and reduces environmental pollution. To ensure the stability and performance of the emulsified asphalt during use, it must be heated and uniformly stirred to maintain uniformity and fluidity.

[0003] Existing asphalt emulsion heating systems typically use hot air or steam to transfer heat to the emulsified asphalt, raising its temperature. However, because emulsified asphalt is a complex liquid mixture containing water and asphalt, two immiscible substances, stratification is prone to occur during heating. To avoid this problem, the emulsified asphalt needs to be thoroughly stirred to maintain its uniformity.

[0004] Traditional emulsified asphalt heating devices have certain shortcomings during the heating and stirring processes. For example, some devices utilize only a single heating method, such as electric heating or steam heating. This can lead to uneven heating and large temperature variations in the emulsified asphalt, thus affecting its performance. Furthermore, some stirring devices offer poor stirring performance, failing to ensure adequate mixing of the emulsified asphalt during heating, resulting in unstable emulsified asphalt quality.

[0005] To address these issues, researchers have proposed various improvements in recent years, including optimizing heating and stirring methods. One effective heating and stirring method is a combination of hot air heating, mechanical stirring, and airflow stirring. This method uses a hot air blower to heat the air, then directs the airflow through a coil to evenly transfer the heat to the emulsified asphalt. The combined action of a stirring assembly and airflow stirring device ensures uniformity and fluidity during the heating process.

[0006] Currently, some emulsified asphalt heating systems have achieved simultaneous heating and stirring. The coils, agitators, and airflow systems within the system work effectively together to achieve efficient heating and uniform stirring of the emulsified asphalt. The introduction of airflow stirring, in particular, further improves stirring efficiency, helps resolve stratification issues during emulsified asphalt heating, and increases heating speed and energy efficiency.

[0007] However, existing technologies still face several challenges. First, the complex structural design of some devices makes maintenance and operation difficult. Second, the heating and stirring performance of existing devices can be affected by factors such as airflow velocity and agitator speed, making control of these parameters challenging. Finally, some devices suffer from low energy efficiency and heating speed, failing to meet the demands of large-scale production. Therefore, optimizing the heating efficiency and stirring performance of emulsified asphalt heating devices, and improving their stability and energy efficiency, remains a key research and development topic. Utility Model Content

[0008] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an emulsified asphalt heating device, which can effectively be used to uniformly heat and stir the emulsified asphalt to ensure the quality and production efficiency of the asphalt.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] An emulsified asphalt heating device is installed on a frame, including a hot air blower, a tank body and a heating unit; the hot air blower and the tank body are fixed on the frame; the heating unit includes an air inlet pipe, an air outlet pipe, a coil and a stirring assembly; the air inlet pipe is fixed to one side of the bottom of the tank body, and the air outlet pipe is fixed to the top of the tank body; the coil is placed inside the tank body, one end is connected to the air inlet pipe, and the other end is connected to the air outlet pipe; one end of the air inlet pipe is connected to the hot air blower; the stirring assembly includes a sleeve and multiple agitators; the sleeve is fixed inside the coil; the agitators are installed on the sleeve and are evenly spaced along the axial direction of the sleeve; the agitator includes a shaft, a spiral blade and multiple arc-shaped fan blades; the shaft is rotatably installed on the sleeve, one end extends to the inside of the sleeve, and the other end passes through the coil and extends to the outside of the coil; the spiral blade is placed in the tank body and fixedly connected to the shaft; the arc-shaped fan blade is placed in the sleeve and fixedly connected to the shaft; the multiple arc-shaped fan blades are distributed in a circular array with the axis of the shaft as the center.

[0011] Preferably, the stirring assembly also includes multiple guide tubes; the guide tubes are fixed inside the sleeve, and the multiple guide tubes are respectively arranged corresponding to the multiple agitators; a through hole adapted to the shaft rod is provided on the guide tube, and one end of the shaft rod extends into the guide tube through the through hole; the arc-shaped fan blades are located in the guide tube; the inner diameter of the guide tube gradually decreases from both ends to the center.

[0012] Preferably, the stirring assembly further comprises a plurality of partition plates; the partition plates are placed between two adjacent guide tubes, with two sides respectively abutting against the two guide tubes; and air holes are provided on the partition plates near the arc-shaped fan blades.

[0013] Preferably, the stirring assembly also includes a support rod; the support rod is placed in the coil and passes through the guide tube; an air flow channel is provided inside the support rod; an air inlet is provided on one end of the support rod facing the air inlet pipe, the air inlet is connected to the air flow channel, and a solenoid valve is provided in the air inlet; an air outlet is provided on the support rod near the shaft rod, the air outlet is connected to the air flow channel, the axis of the air outlet coincides with the axis of the shaft rod, and the diameter of the air outlet is larger than the diameter of the shaft rod.

[0014] Preferably, a guide sleeve is installed in the through hole, and the shaft rod can slide through the guide sleeve; a first baffle is provided on the upper part of the guide sleeve, and a second baffle is provided on the lower part, and the first baffle and the second baffle are both fixedly connected to the shaft rod; a first spring is provided between the first baffle and the guide sleeve, and the two ends of the first spring respectively abut the first baffle and the guide sleeve; a second spring is provided between the second baffle and the guide sleeve, and the two ends of the second spring respectively abut the second baffle and the guide sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] Beneficial effects:

[0017] Uniform heating: This emulsified asphalt heating device combines hot air heating with coils to evenly transfer heat to the emulsified asphalt, avoiding the uneven heating phenomenon common in traditional heating methods, thereby ensuring the temperature consistency of the emulsified asphalt and improving its construction performance.

[0018] Excellent stirring effect: The device adopts a combination of mechanical stirring and air flow stirring. Through the cooperation of spiral blades and curved fan blades, it ensures the uniform stirring of emulsified asphalt in the tank, reduces stratification, and improves the stability and uniformity of emulsified asphalt.

[0019] Improved Heating Efficiency: Through optimized coil design and airflow channel structure, the hot air generated by the hot air blower is transferred through the coil, accelerating the heating process of the emulsified asphalt. The airflow through the agitator drives the emulsified asphalt to flow, helping to improve heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the tank body of the present utility model;

[0022] Figure 3 This is a diagram of the internal structure of the tank body of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of the heating unit in the present utility model;

[0024] Figure 5 This is a schematic diagram of the structural disassembly of the heating unit in the present invention;

[0025] Figure 6 Schematic diagram of the internal structure of the heating unit in the present invention;

[0026] Figure 7 for Figure 6 A partial enlarged view of point A in the middle;

[0027] Figure 8 It is a structural schematic diagram of the agitator in the present utility model.

[0028] in:

[0029] 1. Frame; 2. Tank; 3. Hot air blower; 41. Air outlet duct; 42. Air inlet duct; 43. Agitator; 44. Sleeve; 45. Coil; 46. Partition plate; 47. Air hole; 48. Guide tube; 49. Support rod; 410. Air outlet; 411. Air flow channel; 431. Spiral blade; 432. Shaft; 433. First baffle; 434. Second baffle; 435. Arc-shaped fan blade; 436. Second spring; 437. First spring; 438. Guide sleeve. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] like Figures 1 to 8As shown, an emulsified asphalt heating device is installed on a frame 1, including a hot air blower 3, a tank body 2 and a heating unit; the hot air blower 3 and the tank body 2 are fixed on the frame 1; the heating unit includes an air inlet pipe 42, an air outlet pipe 41, a coil 45 and a stirring assembly; the air inlet pipe 42 is fixed to one side of the bottom of the tank body 2, and the air outlet pipe 41 is fixed to the top of the tank body 2; the coil 45 is placed inside the tank body 2, one end of which is connected to the air inlet pipe 42 and the other end is connected to the air outlet pipe 41; one end of the air inlet pipe 42 is connected to the hot air blower 3; the stirring assembly includes a sleeve 44 and a plurality of stirrers 43; the sleeve 44 is fixed to the coil 4 5; the agitator 43 is mounted on the sleeve 44 and is evenly spaced along the axis of the sleeve 44; the agitator 43 includes a shaft 432, a spiral blade 431 and a plurality of arc-shaped blades 435; the shaft 432 is rotatably mounted on the sleeve 44, with one end extending to the interior of the sleeve 44 and the other end extending to the exterior of the coil 45 through the coil 45; the spiral blade 431 is placed in the tank body 2 and fixedly connected to the shaft 432; the arc-shaped blades 435 are placed in the sleeve 44 and fixedly connected to the shaft 432; the plurality of arc-shaped blades 435 are distributed in a circular array with the axis of the shaft 432 as the center. The hot air blown out by the hot air blower 3 enters the coil 45 through the air inlet pipe 42. The heat is transferred to the tank body 2 through the coil 45 to heat the emulsified asphalt, and then the air flow is discharged from the air outlet pipe 41; when the air flow blows on the arc-shaped fan blade 435, it will drive the shaft 432 to rotate, and then the spiral blade 431 will rotate, stirring the emulsified asphalt through the spiral blade 431 to achieve uniform heating. The two adjacent spiral blades 431 have opposite rotation directions, causing the emulsified asphalt to circulate in the tank body 2. Through this design, the heating of the emulsified asphalt is more uniform, avoiding local overheating or cooling, thereby ensuring the quality and stability of the asphalt. The combined effect of airflow and mechanical stirring significantly improves the heating and stirring efficiency, especially for the treatment of high-viscosity emulsified asphalt.

[0032] In this embodiment, the stirring assembly further includes a plurality of guide tubes 48 ; the guide tubes 48 are fixed inside the sleeve 44 and are respectively arranged corresponding to the plurality of agitators 43 ; the guide tubes 48 are provided with a through hole adapted for the shaft 432 , one end of the shaft 432 extending through the through hole into the guide tube 48 ; the arc-shaped blades 435 are located within the guide tube 48 ; the inner diameter of the guide tube 48 gradually decreases from both ends toward the center, and the arc-shaped blades 435 are located at the center of the guide tube 48 ; the inner diameter structure of the guide tube 48 maximizes the flow velocity of the airflow when it reaches the position of the arc-shaped blades 435 , thereby increasing the rotation speed of the shaft 432 . The design of the guide tube 48 allows the airflow to be more concentrated, ensuring accelerated flow within the guide tube 48 and further enhancing the stirring effect. By creating a greater airflow velocity inside the guide tube 48, the force of the airflow on the arc-shaped fan blades 435 is effectively increased, and the rotation efficiency of the agitator 43 is enhanced, thereby promoting uniform stirring and heating of the emulsified asphalt.

[0033] In this embodiment, the stirring assembly also includes a plurality of partition plates 46; the partition plate 46 is placed between two adjacent guide tubes 48, and is respectively in contact with the two guide tubes 48 on both sides; an air hole 47 is provided on the partition plate 46 near the arc-shaped blades 435, and the air flow passes through the air hole 47 from one guide tube 48 into the other guide tube 48, so that the air flow is more concentrated on the arc-shaped blades 435, speeding up the rotation speed of the shaft 432, and at the same time prolonging the time for the air flow to flow in the coil 45, thereby improving the heating effect. The partition plate 46 improves the flow path of the air flow, ensuring that the air flow is more concentrated and has a higher flow rate, thereby accelerating the heat transfer of the air flow to the emulsified asphalt and improving the heating efficiency. The design of the air hole 47 not only accelerates the flow of the air flow, but also effectively increases the movement speed of the agitator 43, further enhancing the stirring effect, and ensuring that the emulsified asphalt flows evenly in the tank body 2.

[0034] In this embodiment, the stirring assembly also includes a support rod 49; the support rod 49 is placed in the coil 45 and passes through the guide tube 48; an air flow channel 411 is provided inside the support rod 49; an air inlet is provided on the end of the support rod 49 facing the air inlet pipe 42, the air inlet is connected to the air flow channel 411, and an electromagnetic valve is provided in the air inlet; an air outlet 410 is provided on the support rod 49 near the shaft 432, the air outlet 410 is connected to the air flow channel 411, the axis of the air outlet 410 coincides with the axis of the shaft 432, and the diameter of the air outlet 410 is larger than the diameter of the shaft 432; after the electromagnetic valve is opened, part of the air flow enters the air flow channel 411 and is sprayed onto the arc-shaped fan blades 435 from the air outlet 410, exerting an upward thrust on the agitator 43, offsetting the deadweight of the agitator 43, and improving the flexibility of the rotation of the shaft 432. The amount of air entering the air flow channel 411 is adjusted by the electromagnetic valve to adjust the thrust acting on the agitator 43. This design, through the control of airflow channel 411 and solenoid valve, allows the airflow rate to be adjusted according to actual needs. By varying the thrust of the airflow on agitator 43, the agitator's speed and stirring range can be flexibly controlled to accommodate different emulsified asphalt heating requirements. Furthermore, the use of the solenoid valve improves the precision of airflow control, making the entire heating process more stable and efficient.

[0035] In this embodiment, a guide sleeve 438 is installed in the through hole, and the shaft 432 is slidably inserted into the guide sleeve 438; a first baffle 433 is provided on the upper part of the guide sleeve 438, and a second baffle 434 is provided on the lower part. The first baffle 433 and the second baffle 434 are fixedly connected to the shaft 432; a first spring 437 is provided between the first baffle 433 and the guide sleeve 438, and the two ends of the first spring 437 respectively abut against the first baffle 433 and the guide sleeve 438; the second baffle 434 and the guide sleeve 43 A second spring 436 is disposed between the agitator 43 and the agitator 43. The two ends of the second spring 436 abut against the second baffle 434 and the guide sleeve 438, respectively. When the solenoid valve controls the linear change in the amount of air entering the airflow channel 411, when the thrust acting on the agitator 43 is large, the shaft 432 moves upward along the axis of the guide sleeve 438. When the thrust decreases, the second spring 436 and the action of gravity push the shaft 432 downward, achieving the up and down movement of the spiral blade 431 and increasing the stirring range of the spiral blade 431. The design of the spring and guide sleeve 438 allows the up and down movement of the shaft 432 to be adaptively adjusted according to the thrust applied to the agitator 43. When the airflow increases, the shaft 432 moves upward. When the thrust decreases, the spring's restoring force pushes the shaft 432 downward, ensuring that the range of motion of the spiral blade 431 is optimized, further enhancing the stirring effect. This design makes the agitator 43 more flexible and improves the heating and stirring effect of the emulsified asphalt.

[0036] Working principle:

[0037] This emulsified asphalt heating device utilizes a hot air blower 3 to heat air, which is then introduced into a coil 45 via an air inlet pipe 42. The coil 45 then transfers the heat to the emulsified asphalt within the tank 2, thereby heating the emulsified asphalt. During the heating process, the hot air from the hot air blower 3 enters the coil 45 via the air inlet pipe 42, transfers heat through the coil 45, and is then discharged through the air outlet pipe 41, completing the heating process.

[0038] In order to ensure the uniformity of emulsified asphalt heating, the device is equipped with a stirring assembly, which ensures that the emulsified asphalt flows evenly in the tank body 2 by combining mechanical stirring with air flow stirring. Specifically, the stirring assembly includes a sleeve 44, a plurality of stirrers 43, an arc-shaped fan blade 435 and a spiral blade 431. After the airflow is heated by the hot air blower 3, it enters the coil 45 and heats the emulsified asphalt. At the same time, the airflow blows on the arc-shaped fan blade 435, driving the shaft 432 to rotate, causing the spiral blade 431 to stir, thereby promoting uniform heating of the emulsified asphalt. The adjacent spiral blades 431 rotate in opposite directions, forming a circular flow, which makes the emulsified asphalt heating more uniform.

[0039] The stirring assembly is also equipped with a guide tube 48, which accelerates the airflow inside the guide tube and concentrates it on the curved blades 435, increasing the speed of the stirrer 43. Through the optimized airflow design, the device improves heating efficiency and stirring effect, ensuring the stability and quality of the emulsified asphalt during the heating process.

[0040] In addition, an air flow channel 411 is set in the support rod 49 in the device, and the air flow entering the channel of the support rod 49 is controlled by the solenoid valve, and the air flow is ejected to provide additional thrust, helping the agitator 43 to rotate more flexibly, thereby further improving the heating and stirring effects.

[0041] Directions:

[0042] Equipment installation and commissioning:

[0043] Install the emulsified asphalt heating device in a suitable location, ensure that frame 1 is stable and connect it to the power supply.

[0044] Ensure that the hot air blower 3, tank 2 and all pipes are correctly connected, especially the air inlet pipe 42, air outlet pipe 41, coil 45 and other components.

[0045] Adjust the setting of the solenoid valve according to actual needs to ensure that the air flow channel 411 can work normally.

[0046] Prepare asphalt emulsion:

[0047] Prepare the emulsified asphalt raw materials as required and ensure that its fluidity meets the requirements.

[0048] Emulsified asphalt is added into the tank body 2 and continuously fed by controlling the feeding device to ensure that the emulsified asphalt in the tank body 2 is in a stable state.

[0049] Boot device:

[0050] Turn on the power, start the hot air blower 3, set the appropriate wind speed and temperature, introduce the hot air into the coil 45, and start heating the emulsified asphalt.

[0051] The stirring assembly is started to ensure that the emulsified asphalt is evenly stirred in the tank body 2 through the dual effects of air flow and mechanical stirring.

[0052] Adjust the heating process:

[0053] Through the control panel, the equipment operating status is monitored in real time, and the air flow rate and the switch of the solenoid valve are adjusted as needed to ensure the stability of the heating process and the quality of the emulsified asphalt.

[0054] If the heating effect of the emulsified asphalt is uneven, you can adjust the speed of the stirring component or increase the air flow to further improve the stirring effect.

[0055] End of use:

[0056] When the emulsified asphalt reaches the required heating temperature and uniformity, stop the heating device and close the solenoid valve to cut off the power supply.

[0057] Clean the equipment to ensure the heating mechanism is in good working order the next time you use it.

[0058] Through the above steps, the emulsified asphalt heating device can be effectively used to uniformly heat and stir the emulsified asphalt, ensuring the quality and production efficiency of the asphalt.

Claims

1. An emulsified asphalt heating device, mounted on a frame (1), characterized in that: The invention comprises a hot air blower (3), a tank body (2) and a heating unit; the hot air blower (3) and the tank body (2) are fixed on a frame (1); the heating unit comprises an air inlet pipe (42), an air outlet pipe (41), a coil (45) and a stirring assembly; the air inlet pipe (42) is fixed to one side of the bottom of the tank body (2), and the air outlet pipe (41) is fixed to the top of the tank body (2); the coil (45) is placed inside the tank body (2), one end of the coil is connected to the air inlet pipe (42), and the other end is connected to the air outlet pipe (41); one end of the air inlet pipe (42) is connected to the hot air blower (3); the stirring assembly comprises a sleeve (44) and a plurality of stirrers (43); the sleeve (44) is fixed inside the coil (45); the stirrers (43) is installed on the sleeve (44) and is evenly spaced along the axial direction of the sleeve (44); the agitator (43) includes a shaft (432), a spiral blade (431) and a plurality of arc-shaped blades (435); the shaft (432) is rotatably installed on the sleeve (44), one end of which extends to the inside of the sleeve (44) and the other end passes through the coil (45) and extends to the outside of the coil (45); the spiral blade (431) is placed in the tank body (2) and fixedly connected to the shaft (432); the arc-shaped blades (435) are placed in the sleeve (44) and fixedly connected to the shaft (432); the plurality of arc-shaped blades (435) are distributed in a circular array with the axis of the shaft (432) as the center.

2. The emulsified asphalt heating device according to claim 1, characterized in that: The stirring assembly further comprises a plurality of guide tubes (48); the guide tubes (48) are fixed inside the sleeve (44), and the plurality of guide tubes (48) are respectively arranged corresponding to the plurality of stirrers (43); a through hole adapted to the shaft (432) is provided on the guide tube (48), and one end of the shaft (432) extends through the through hole into the guide tube (48); the arc-shaped fan blades (435) are located in the guide tube (48); the inner diameter of the guide tube (48) gradually decreases from both ends to the center.

3. The emulsified asphalt heating device according to claim 2, characterized in that: The stirring assembly further comprises a plurality of partition plates (46); the partition plates (46) are placed between two adjacent guide tubes (48), with both sides respectively abutting against the two guide tubes (48); and air holes (47) are provided on the partition plates (46) at positions close to the arc-shaped fan blades (435).

4. The emulsified asphalt heating device according to claim 3, characterized in that: The stirring assembly further comprises a support rod (49); the support rod (49) is placed in the coil (45) and passes through the guide tube (48); an air flow channel (411) is provided inside the support rod (49); an air inlet is provided on one end of the support rod (49) facing the air inlet pipe (42), the air inlet is connected to the air flow channel (411), and a solenoid valve is provided in the air inlet; an air outlet (410) is provided on the support rod (49) at a position close to the shaft (432), the air outlet (410) is connected to the air flow channel (411), the axis of the air outlet (410) coincides with the axis of the shaft (432), and the diameter of the air outlet (410) is larger than the diameter of the shaft (432).

5. The emulsified asphalt heating device according to claim 4, characterized in that: A guide sleeve (438) is installed in the through hole, and the shaft (432) is slidably arranged to pass through the guide sleeve (438); a first baffle (433) is arranged on the upper part of the guide sleeve (438), and a second baffle (434) is arranged on the lower part, and the first baffle (433) and the second baffle (434) are both fixedly connected to the shaft (432); a first spring (437) is arranged between the first baffle (433) and the guide sleeve (438), and the two ends of the first spring (437) respectively abut on the first baffle (433) and the guide sleeve (438); a second spring (436) is arranged between the second baffle (434) and the guide sleeve (438), and the two ends of the second spring (436) respectively abut on the second baffle (434) and the guide sleeve (438).

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