Special solid asphalt particle blending and stirring device

Abstract

The utility model relates to the technical field of stirring devices, and particularly discloses a special solid asphalt particle blending and stirring device which is characterized in that an upper-layer spiral stirrer, a middle-layer spiral stirrer and a lower-layer spiral stirrer are all rotationally connected in a tank body, a spiral water guide plate is arranged on the outer surface of the tank body, and is arranged in a water storage pipe; the water inlet is formed in the upper end of the spiral water guide plate, the water outlet is formed in the lower end of the spiral water guide plate, the conical polishing hopper is fixedly connected into the tank body, the feeding port is formed in the conical polishing hopper, the vibrator is arranged in the conical polishing hopper, and efficient particle dispersion is achieved through the layered stirring mechanism. The interlayer temperature control module is combined to accurately maintain the process temperature, the anti-blocking feeding mechanism is matched to solve the problem of fluidity of solid particles, the anti-rutting performance of the asphalt mixture is remarkably improved, and the device is suitable for high-grade highway construction in extreme climate areas such as Xinjiang and has the advantages of high uniformity, low energy consumption, blocking prevention and the like.

Description

Technical Field

[0001] This utility model relates to the field of mixing device technology, and in particular to a special solid asphalt particle mixing device. Background Technology

[0002] In the field of road engineering material processing, the blending process of solid asphalt particles and base asphalt is crucial for the production of high-quality modified asphalt mixtures. This is especially true in the construction of high-grade highways in extreme climate regions such as Xinjiang, where there are large temperature differences between day and night, and the performance requirements for modified asphalt mixtures are even more stringent.

[0003] Existing asphalt mixing equipment has the following problems when processing solid asphalt particles: uneven particle dispersion, that is, solid particles are prone to agglomeration, resulting in uneven particle distribution in the mixture, affecting the rutting resistance of the asphalt mixture; temperature control failure, that is, frictional heat generated during the mixing process can easily cause the asphalt temperature to exceed the standard, leading to asphalt aging; and feeding blockage, that is, the particles have poor fluidity and the feeding port is prone to blockage, requiring frequent shutdowns for cleaning, which reduces production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dedicated solid asphalt particle blending and mixing device, which solves the technical problems of uneven particle dispersion, i.e., solid particles are prone to agglomeration, resulting in uneven particle distribution in the mixture, affecting the rutting resistance of the asphalt mixture; temperature control failure, i.e., frictional heat generation during blending easily leads to excessive asphalt temperature, causing asphalt aging; and feeding blockage, i.e., poor particle fluidity, easy blockage of the feeding port, requiring frequent shutdowns for cleaning, reducing production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dedicated solid asphalt particle blending and mixing device includes a tank. The tank is equipped with a layered mixing mechanism, a temperature control module, and an anti-clogging feeding mechanism. The layered mixing mechanism includes an upper spiral mixer, a middle spiral mixer, and a lower spiral mixer. The upper, middle, and lower spiral mixers are all rotatably connected inside the tank. The upper and middle spiral mixers are located at the upper end of the tank, and the lower spiral mixer is located at the lower end of the tank.

[0007] Preferably, the temperature control module includes a water storage pipe, a spiral water guide plate, a water inlet, and a water outlet, with the water storage pipe fixedly connected to the outer surface of the tank.

[0008] Preferably, the spiral water guide plate is disposed on the outer surface of the tank body, the spiral water guide plate is disposed inside the water storage pipe, the water inlet is located at the upper end of the spiral water guide plate, and the water outlet is located at the lower end of the spiral water guide plate.

[0009] Preferably, the anti-clogging feeding mechanism includes a polished conical hopper, a feed inlet, and a vibrator, wherein the polished conical hopper is fixedly connected inside the tank.

[0010] Preferably, the feed inlet is located inside the polishing conical hopper, and the vibrator is located inside the polishing conical hopper.

[0011] Preferably, the tank body has an outlet, which is located at one end near the lower spiral agitator.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The layered mixing mechanism achieves efficient particle dispersion, and the sandwich temperature control module precisely maintains the process temperature. The anti-clogging feeding mechanism solves the problem of solid particle flowability, significantly improving the rutting resistance of asphalt mixtures. It is suitable for the construction of high-grade highways in extreme climate areas such as Xinjiang, and has the advantages of high uniformity, low energy consumption and anti-clogging. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the tank body of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 Exploded view of the upper spiral stirrer connection of this utility model;

[0019] Figure 5 Exploded view of the connection of the middle layer spiral stirrer of this utility model;

[0020] Figure 6 Exploded view of the lower spiral stirrer connection of this utility model;

[0021] Figure 7 This is an exploded view of the spiral water guide plate connection of this utility model.

[0022] Legend: 1. Tank body; 2. Inlet; 3. Vibrator; 4. Upper spiral agitator; 5. Middle spiral agitator; 6. Lower spiral agitator; 7. Outlet; 8. Temperature control module; 9. Water storage pipe; 10. Spiral guide plate; 11. Water inlet; 12. Water outlet. Detailed Implementation

[0023] This application provides a dedicated solid asphalt particle blending and mixing device, which effectively solves the problems of uneven particle dispersion (i.e., solid particles easily clump together, leading to uneven particle distribution in the mixture and affecting the rutting resistance of the asphalt mixture), temperature control failure (i.e., frictional heat during blending easily causes the asphalt temperature to exceed the standard, leading to asphalt aging), and feeding blockage (i.e., poor particle flowability, easy blockage of the feeding port, requiring frequent shutdowns for cleaning and reducing production efficiency). The device achieves efficient particle dispersion through a layered mixing mechanism, precisely maintains the process temperature using a sandwich temperature control module, and solves the solid particle flowability problem with an anti-blocking feeding mechanism, significantly improving the rutting resistance of the asphalt mixture. It is suitable for high-grade highway construction in extreme climate regions such as Xinjiang, and has advantages such as high uniformity, low energy consumption, and anti-blocking properties.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the technical solution in this application embodiment effectively solves the problems of uneven particle dispersion, i.e., solid particles are prone to agglomeration, resulting in uneven particle distribution in the mixture, affecting the rutting resistance of the asphalt mixture; temperature control failure, i.e., frictional heat generation during the blending process easily leads to excessive asphalt temperature, causing asphalt aging; and feeding blockage, i.e., poor particle flowability, easy blockage of the feeding port, requiring frequent shutdowns for cleaning, reducing production efficiency. The overall idea is as follows: A special solid asphalt particle blending and mixing device, including a tank 1, the tank 1 is equipped with a layered mixing mechanism, a temperature control module 8 and an anti-blocking feeding mechanism. The layered mixing mechanism includes an upper spiral mixer 4 and a middle spiral mixer. The upper spiral agitator 4, middle spiral agitator 5, and lower spiral agitator 6 are all rotatably connected inside the tank 1. The upper spiral agitator 4 and middle spiral agitator 5 are located at the upper end of the tank 1, and the lower spiral agitator 6 is located at the lower end of the tank 1. The upper spiral agitator 4 inside the tank 1 is a spiral blade agitator, the middle spiral agitator 5 is a bidirectional paddle agitator, and the lower spiral agitator 6 is an anchor-type agitator. All three agitators are driven to rotate by motors. Two motors are installed at the upper end of the tank 1, and the other motor is installed at the lower end of the tank 1. The two motors at the upper end are used to drive the upper spiral agitator 4 and the middle spiral agitator 5, respectively, and the motor at the lower end is used to drive the lower spiral agitator 6.

[0026] The temperature control module 8 includes a water storage pipe 9, a spiral guide plate 10, a water inlet 11, and a water outlet 12. The water storage pipe 9 is fixedly connected to the outer surface of the tank body 1. The spiral guide plate 10 is disposed on the outer surface of the tank body 1 and inside the water storage pipe 9. The water inlet 11 is located at the upper end of the spiral guide plate 10, and the water outlet 12 is located at the lower end of the spiral guide plate 10. The anti-clogging feeding mechanism includes a polishing conical hopper, a feed inlet 2, and a vibrator 3. The polishing conical hopper is fixedly connected inside the tank body 1. The feed inlet 2 is located inside the polishing conical hopper, and the vibrator 3 is installed inside the polishing conical hopper. The polishing conical hopper inside the tank body 1 is installed at a 45-degree angle. The vibration frequency of the vibrator 3 is adjustable, and it is 10 Hz during normal operation. During the blending and mixing process, carbon black particles and natural solid asphalt particles are fed into the tank body 1 through the feed inlet 2 in the polishing conical hopper. During the feeding operation, the vibrating feeder enters the polishing conical hopper at a rate of 1.8 kg / s. The frequency of vibrator 3 is increased to 15 Hz to prevent the agglomeration of ultrafine particles using high-frequency micro-amplitude vibration. After the material enters the tank 1, the upper spiral agitator 4 enhances the pre-crushing function to solve the agglomeration problem of carbon black nano-sized particles. The middle spiral agitator 5 increases the shear strength to ensure that the ultrafine particles are fully wetted with the asphalt. The lower spiral agitator 6 simultaneously removes the residue at the bottom of the cylinder to avoid the risk of deposition due to increased particle fineness. During the mixing operation, an infrared thermometer is installed on the upper surface of the tank 1 for real-time temperature monitoring. Cooling water can be injected into the water storage pipe 9, which has a double-layer stainless steel cylinder sandwich structure. Cooling water flows into the water storage pipe 9 through the inlet 11 and flows downward in a spiral form along the spiral guide plate 10. The flow rate is adjusted to six liters per minute by controlling the size of the outlet 12 and the inlet volume. The cooling water directly contacts the surface of the tank 1 for heat dissipation, keeping the temperature of the tank 1 within the range of less than or equal to 77 ± 2 degrees Celsius.

[0027] The tank body 1 has an outlet 7 inside, which is located at one end near the lower spiral agitator 6. During the mixing operation, carbon black particles and natural solid asphalt particles are fed into the tank body 1 through the inlet 2 in the polished conical hopper. The materials are mixed evenly in the tank body 1 by the rotation of the upper spiral agitator 4, the middle spiral agitator 5 and the lower spiral agitator 6. After the mixing is completed, the materials are discharged through the outlet 7 for subsequent use.

[0028] To address the problems existing in the prior art, this utility model provides a dedicated solid asphalt particle blending and mixing device. It achieves efficient particle dispersion through a layered mixing mechanism, precisely maintains the process temperature by combining a sandwich temperature control module 8, and solves the problem of solid particle flowability with an anti-clogging feeding mechanism. This significantly improves the rutting resistance of asphalt mixtures and is suitable for the construction of high-grade highways in extreme climate regions such as Xinjiang. It has advantages such as high uniformity, low energy consumption, and anti-clogging.

[0029] Tank 1: As the main structure of the entire mixing device, it provides installation space for the internal layered mixing mechanism, temperature control module 8, and anti-clogging feeding mechanism; it contains materials such as solid asphalt particles, carbon black particles, and matrix asphalt, allowing them to complete the mixing process inside; the discharge port 7 inside the tank 1 facilitates the discharge of materials after mixing for subsequent use; at the same time, the outer surface of the tank 1 provides a fixed position for the water storage pipe 9 and the spiral water guide plate 10 in the temperature control module 8, working together to achieve the temperature control function;

[0030] Feed inlet 2: Located inside the polished conical hopper, it is the inlet for materials such as carbon black particles and natural solid asphalt particles to enter the tank 1; the materials are fed into the tank 1 through feed inlet 2 and cooperate with the internal stirring mechanism to start the mixing process.

[0031] Vibrator 3: Located inside the polishing conical hopper, the vibration frequency is adjustable. The normal operating frequency is 10 Hz. During the feeding operation, the frequency of vibrator 3 is increased to 15 Hz. High-frequency micro-amplitude vibration is used to prevent ultrafine particles (such as carbon black nanoparticles) from arching in the polishing conical hopper, ensuring that the material can smoothly enter the tank 1 through the feed inlet 2. This effectively solves the clogging problem caused by the poor flowability of solid particles. Together with the polishing conical hopper, it forms an anti-clogging feeding mechanism and improves feeding efficiency.

[0032] Upper spiral agitator 4: Rotatably connected inside the tank 1 and located at the upper end of the tank 1, it is a spiral blade agitator driven by a motor installed at the upper end of the tank 1; its main function is to pre-crush the material put into the tank 1, especially to address the agglomeration problem of carbon black nano-sized particles. Through the rotation of the spiral blades, the agglomerated particles are initially dispersed, creating good conditions for further mixing by the middle and lower agitators. Together with the middle spiral agitator 5 and the lower spiral agitator 6, it forms a layered mixing mechanism to achieve efficient particle dispersion.

[0033] The middle-layer spiral mixer 5 is also rotatably connected inside the tank 1 and located at the upper end of the tank 1. It is a bidirectional paddle mixer rod, driven to rotate by another motor installed at the upper end of the tank 1. During the mixing process, it increases the shear strength of the material, ensuring that the ultrafine particles pre-crushed by the upper spiral mixer 4 can be fully impregnated and mixed with the asphalt, further refining the distribution of particles in the asphalt. It works in conjunction with the upper spiral mixer 4 and the lower spiral mixer 6 to improve the uniformity of the blend and enhance the performance of the asphalt mixture.

[0034] The lower spiral agitator 6 is rotatably connected to the lower end of the tank 1. It is an anchor-type agitator and is driven to rotate by a motor installed at the lower end of the tank 1. Its function is to remove residual material at the bottom of the tank 1, avoid material deposition at the bottom of the tank due to increased particle fineness, and ensure that the material can participate in the mixing process in a comprehensive and uniform manner. It works in conjunction with the upper spiral agitator 4 and the middle spiral agitator 5 to ensure that the material in the entire tank 1 is mixed evenly and improve the blending quality.

[0035] Discharge port 7: Located inside the tank 1 near the lower spiral agitator 6. After the solid asphalt particles and other materials are mixed and stirred in the tank 1, the material is discharged from the tank 1 through the discharge port 7, providing qualified admixture materials for subsequent processing or use.

[0036] Temperature control module 8: Composed of water storage pipe 9, spiral guide plate 10, water inlet 11 and water outlet 12, it is used to precisely maintain the process temperature in tank 1; by controlling the temperature of tank 1, it avoids asphalt aging due to excessive temperature, which affects the performance of asphalt mixture, and ensures that the asphalt mixture produced in the construction of high-grade highways in extreme climate areas can meet the performance requirements.

[0037] Water storage pipe 9: It is fixedly connected to the outer surface of the tank 1 and has a double-layer stainless steel cylindrical sandwich structure. The spiral water guide plate 10 is housed inside. Its function is to store and guide the cooling water to flow around the tank 1, so that the cooling water can directly contact the surface of the tank 1 for heat dissipation treatment, effectively removing the heat generated in the tank 1 due to stirring and other processes. Together with the spiral water guide plate 10, the inlet 11 and the outlet 12, it can achieve precise control of the temperature of the tank 1.

[0038] Spiral water guide plate 10: It is fixedly connected to the outer surface of the tank 1 and located inside the water storage pipe 9. After the cooling water flows in through the inlet 11, it flows downward in a spiral form along the spiral water guide plate 10, which increases the contact area and contact time between the cooling water and the surface of the tank 1, improves the heat dissipation efficiency, and makes the temperature inside the tank 1 decrease more evenly. It works in conjunction with the water storage pipe 9, the inlet 11 and the outlet 12 to accurately control the temperature of the tank 1.

[0039] Inlet 11: This is the inlet for cooling water to enter the water storage pipe 9. Through inlet 11, cooling water flows in and along the spiral guide plate 10, working in conjunction with other temperature control components to cool down the tank 1 and ensure that the temperature inside the tank 1 is within a suitable range.

[0040] Outlet 12: After the cooling water completes the heat dissipation of the tank 1 in the water storage pipe 9, it flows out through the outlet 12; by controlling the size of the outlet 12 and the water inlet, the cooling water flow rate can be adjusted to six liters per minute, thereby precisely controlling the heat dissipation rate and the temperature inside the tank 1, and stabilizing it within a range of less than or equal to seventy-seven ± two degrees Celsius.

[0041] Polished conical hopper: Installed at a 45-degree angle, its inner wall is polished. Working together with vibrator 3, it reduces the friction between solid particles and the inner wall. Using gravity and the vibration of vibrator 3, it helps solid particles to pass smoothly through feed inlet 2 into tank 1, effectively preventing particle blockage and improving the smoothness of feeding. It is an important component of the anti-blockage feeding mechanism.

[0042] Working principle:

[0043] The first step involves feeding carbon black particles and natural solid asphalt particles into tank 1 through the feed inlet 2 in the polished conical hopper during the mixing operation. The materials are then mixed evenly within tank 1 by the rotation of the upper spiral agitator 4, the middle spiral agitator 5, and the lower spiral agitator 6. After the mixing is completed, the materials are discharged through the discharge outlet 7 for subsequent use.

[0044] The second step involves installing an upper spiral agitator 4 (spiral blade agitator) inside tank 1, a middle spiral agitator 5 (bidirectional paddle agitator), and a lower spiral agitator 6 (anchor agitator). All three agitators are driven by motors. Two motors are installed at the top of tank 1, and the other at the bottom. The two upper motors drive the upper spiral agitator 4 and the middle spiral agitator 5, respectively, while the lower motor drives the lower spiral agitator 6. The polishing conical hopper inside tank 1 is installed at a 45-degree angle. The vibration frequency of the vibrator 3 is adjustable, typically 10 Hz during normal operation. During blending and mixing, carbon black particles and natural solid asphalt particles are fed into tank 1 through the inlet 2 in the polishing conical hopper. During the feeding operation, the vibrating feeder enters the polishing conical hopper at a rate of 1.8 kg / s, increasing the frequency of the vibrator 3 to 15 Hz, utilizing high-frequency micro-... Amplitude vibration prevents the arching of ultrafine particles. After the material enters the tank 1, the upper spiral agitator 4 enhances the pre-crushing function to solve the agglomeration problem of carbon black nano-sized particles. The middle spiral agitator 5 increases the shear strength to ensure that the ultrafine particles are fully wetted with the asphalt. The lower spiral agitator 6 simultaneously removes the residue at the bottom of the cylinder to avoid the risk of deposition due to increased particle fineness. During the mixing operation, an infrared thermometer is installed on the upper surface of the tank 1 for real-time temperature monitoring. Cooling water can be injected into the water storage pipe 9, which has a double-layer stainless steel cylinder sandwich structure. Cooling water flows into the water storage pipe 9 through the inlet 11 and flows downward in a spiral form along the spiral guide plate 10. The flow rate is adjusted to six liters per minute by controlling the size of the outlet 12 and the inlet volume. The cooling water directly contacts the surface of the tank 1 for heat dissipation, keeping the temperature of the tank 1 within the range of less than or equal to 77 ± 2 degrees Celsius.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A dedicated solid asphalt particle mixing and blending device, comprising a tank (1), wherein the tank (1) is internally equipped with a layered mixing mechanism, a temperature control module (8), and an anti-clogging feeding mechanism, characterized in that, The layered stirring mechanism includes an upper spiral stirrer (4), a middle spiral stirrer (5) and a lower spiral stirrer (6), all of which are rotatably connected inside the tank (1). The upper spiral agitator (4) and the middle spiral agitator (5) are located at the upper end of the tank (1), and the lower spiral agitator (6) is located at the lower end of the tank (1).

2. The special solid asphalt particle mixing and blending device as described in claim 1, characterized in that, The temperature control module (8) includes a water storage pipe (9), a spiral water guide plate (10), a water inlet (11), and a water outlet (12); The water storage pipe (9) is fixedly connected to the outer surface of the tank (1).

3. The special solid asphalt particle mixing and blending device as described in claim 2, characterized in that, The spiral water guide plate (10) is disposed on the outer surface of the tank body (1) and the spiral water guide plate (10) is disposed inside the water storage pipe (9); The inlet (11) is located at the upper end of the spiral guide plate (10), and the outlet (12) is located at the lower end of the spiral guide plate (10).

4. The special solid asphalt particle mixing and blending device as described in claim 1, characterized in that, The anti-clogging feeding mechanism includes a polished conical hopper, a feed inlet (2), and a vibrator (3); The polishing conical hopper is fixedly connected inside the tank (1).

5. The special solid asphalt particle mixing and blending device as described in claim 4, characterized in that, The feed inlet (2) is located inside the polishing conical hopper. The vibrator (3) is located inside the polishing conical hopper.

6. The dedicated solid asphalt particle mixing and blending device as described in claim 1, characterized in that, The tank (1) has a discharge port (7) inside; The discharge port (7) is located at one end near the lower spiral agitator (6).

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