Mixing and stirring device

Abstract

The utility model discloses a mixing and stirring device, which relates to the technical field of asphalt concrete production equipment and comprises a first feeding component, a second feeding component and a stirring component, the second feeding assembly is used for supplying aggregate; the spraying assembly is connected with the first feeding assembly and is used for spraying a liquid modifier; the mixing and stirring assembly is respectively connected with the spraying assembly and the second feeding assembly and is used for mixing and stirring the liquid modifier and the aggregate; and the heating assembly is arranged on the mixing and stirring assembly and is used for heating the liquid modifier and the aggregate. According to the utility model, not only can the wrapping uniformity of the modifier be improved, but also the problem of asphalt-aggregate interface stripping caused by higher water content of the liquid modifier can be avoided, the performance of asphalt concrete can be ensured, the technological process can be optimized, the production cycle can be shortened, the production efficiency can be improved, and the energy consumption can be reduced.

Description

A mixing and stirring device Technical Field

[0001] This utility model relates to the technical field of asphalt concrete production equipment, specifically to a mixing and stirring device for asphalt concrete modification using hydrocarbon-based graphene and aggregates. Background Technology

[0002] Asphalt concrete pavement, as a core material in modern highway construction, directly determines its service performance through its resistance to rutting, cracking, and durability. However, under the combined effects of heavy traffic and extreme weather, the service life of traditional asphalt concrete is shortened, often failing to meet the demands of practical applications and leading to premature pavement damage. Therefore, modified asphalt concrete has become a focus of industry research. Hydrocarbon-based graphene, as a nanomaterial, possesses a unique two-dimensional structure, high specific surface area, and adsorption properties, which can significantly improve the high-temperature stability, rutting resistance, aging resistance, and VOCs suppression effect of asphalt.

[0003] However, hydrocarbon-based graphene usually exists in the form of dispersions, and faces the following bottlenecks in the industrial application of modified asphalt concrete: (1) Compatibility conflict between liquid modifiers and existing processes: In the existing technology, the relevant equipment is mostly designed with solid SBS modifiers and rubber powder, and the modified asphalt is produced by wet process and then mixed with aggregates. However, hydrocarbon-based graphene needs to be added in the form of dispersions. Directly using the existing process will lead to a significant increase in the moisture content of the asphalt-aggregate system after mixing, causing asphalt-aggregate interface peeling. In addition, liquid modifiers need to be mixed synchronously with aggregates, otherwise the modifier will not be uniformly coated. (2) Energy efficiency imbalance of step-by-step processing: If the drying-mixing process is used, although the moisture can be removed, the process is complicated, but it leads to a surge in energy consumption and increased costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a mixing and stirring device to solve the technical problems of asphalt-aggregate interface peeling, uneven coating of modifier, and complicated process caused by high water content of liquid modifier.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a mixing and stirring device, comprising:

[0007] The first feed assembly is used to supply liquid modifier;

[0008] The second feeding assembly is used to supply aggregates;

[0009] The ejection assembly, connected to the first feeding assembly, is used to eject liquid modifier;

[0010] A mixing and stirring assembly, connected to both the spraying assembly and the second feeding assembly, is used to mix and stir the liquid modifier and the aggregate; and

[0011] A heating component, disposed on the mixing and stirring component, is used to heat the liquid modifier and aggregate.

[0012] In some embodiments, the first feeding component includes:

[0013] The first vibrating feed hopper is used for feeding liquid modifiers; and

[0014] A quantitative conveying pipeline is connected to the first vibrating feed hopper and the spraying assembly, respectively, for conveying liquid modifier into the spraying assembly.

[0015] In some embodiments, the second feeding assembly includes:

[0016] The second vibrating feeder is used to feed aggregates; and

[0017] The spiral feed pipe is connected to the second vibrating feed hopper and the mixing and stirring assembly, respectively, and is used to convey aggregate into the mixing and stirring assembly.

[0018] In some embodiments, the ejection assembly includes:

[0019] A connecting pipe is used to connect the first feeding assembly and the mixing assembly;

[0020] A booster pump, installed on the connecting pipeline, is used to provide pressure; and

[0021] A control switch, located on the connecting pipe, is used to control the flow of the liquid modifier;

[0022] The end of the connecting pipe away from the first feeding component extends into the interior of the mixing and stirring component and is equipped with an atomizing nozzle.

[0023] In some embodiments, the atomizing nozzle is movable and adjustable at the end of the connecting pipe, and a self-cleaning needle valve is also provided inside the atomizing nozzle.

[0024] In some embodiments, the mixing and stirring assembly includes:

[0025] A mixing chamber, connected to both the ejection assembly and the second feeding assembly, is used to receive and mix the liquid modifier and the aggregate; and

[0026] A mixing and stirring mechanism, comprising a stirring paddle, a transmission component connected to the stirring paddle, and a mixing and stirring drive component connected to the transmission component;

[0027] The heating component is disposed on the mixing chamber.

[0028] In some embodiments, the surface of the stirring paddle is provided with a wear-resistant and corrosion-resistant layer.

[0029] In some embodiments, a pre-stirring component for stirring the liquid modifier is further provided between the first feeding component and the ejection component.

[0030] In some embodiments, the pre-stirring assembly includes:

[0031] A sealed chamber is connected to the first feeding assembly and the ejection assembly, respectively.

[0032] A stirrer, movably disposed within the sealed chamber, is used for stirring the liquid modifier; and

[0033] A front-mounted stirring drive is disposed on the sealed chamber and is connected to the stirrer for driving the stirrer to move.

[0034] In some embodiments, the stirrer includes at least two first stirring shafts, each first stirring shaft being connected to a propeller blade, and the directions of any two adjacent first stirring shafts being reversed.

[0035] Compared with the prior art, the mixing and stirring device provided by this utility model feeds aggregate into the mixing and stirring assembly through the second feeding assembly, and sprays liquid modifier into the mixing and stirring assembly through the spraying assembly, realizing the synchronous mixing and stirring of liquid modifier and aggregate, so that the modifier is evenly coated on the surface of aggregate, ensuring the uniformity of modifier coating; in addition, while the liquid modifier and aggregate are mixed and stirred, the heating assembly can heat and dry the moisture to reduce the moisture content of the asphalt-aggregate system, which not only avoids the problem of asphalt-aggregate interface delamination and ensures the performance of asphalt concrete, but also optimizes the process flow, shortens the production cycle, improves production efficiency, and reduces energy consumption. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the overall structure of the mixing and stirring device in one embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. First feeding assembly; 11. First vibrating feeder; 12. Quantitative conveying pipeline;

[0039] 2. Second feeding assembly; 21. Second vibrating feed hopper; 22. Screw feeder;

[0040] 3. Spraying assembly; 31. Connecting pipeline; 32. Booster pump; 33. Control switch; 34. Pressure gauge; 35. Atomizing nozzle;

[0041] 4. Mixing and stirring assembly; 41. Mixing chamber; 42. Mixing and stirring mechanism; 421. Stirring paddle; 422. Second stirring shaft; 423. Mixing and stirring drive component; 43. Heating assembly; 44. Vibration damping bracket;

[0042] 5. Pre-stirring assembly; 51. Sealed chamber; 52. Stirrer; 521. First stirring shaft; 522. Propeller blade; 53. Pre-stirring drive unit; 54. Vibration damping support frame. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] To address the aforementioned technical problems, this utility model provides a mixing and stirring device that not only improves the uniformity of modifier coating but also reduces the moisture content of the asphalt-aggregate system, preventing asphalt-aggregate interface delamination, ensuring the performance of asphalt concrete, optimizing the process flow, shortening the production cycle, improving production efficiency, and reducing energy consumption.

[0045] It should be noted that the mixing and stirring device provided by this utility model can be used for, but is not limited to, mixing and stirring of hydrocarbon-based graphene and aggregates. For ease of explanation, this utility model only uses the mixing and stirring device applied to the mixing of hydrocarbon-based graphene and asphalt aggregates as an example for explanation. The principle of the mixing and stirring device applied to other occasions is essentially the same as the principle applied to the mixing of hydrocarbon-based graphene and asphalt aggregates, and will not be described in detail here.

[0046] Please refer to Figure 1, which is a schematic diagram of the overall structure of the mixing and stirring device in one embodiment of the present invention. The mixing and stirring device includes a first feeding component 1, a second feeding component 2, and a mixing and stirring component 4. A spraying component 3 is provided between the first feeding component 1 and the mixing and stirring component 4, and the first feeding component 1 is connected to the mixing and stirring component 4 through the spraying component 3. The second feeding component 2 can be directly connected to the mixing and stirring component 4.

[0047] In practical applications, the first feeding component 1 can be used to feed liquid modifiers (such as hydrocarbon-based graphene dispersions), and the spraying component 3 can spray the liquid modifier from the first feeding component 1 into the mixing component 4. The second feeding component 2 can be used to feed asphalt aggregates, which enter the mixing component 4 through the second feeding component 2 and mix with the liquid modifier within the mixing component 4. The mixing component 4 not only mixes the liquid modifier with the asphalt aggregates but also agitates them, thereby improving the uniformity of the mixture.

[0048] In this embodiment, the first feeding assembly 1 includes a first vibrating feed hopper 11 and a metering conveying pipe 12 connected to the first vibrating feed hopper 11. The end of the metering conveying pipe 12 away from the first vibrating feed hopper 11 is connected to the aforementioned ejection assembly 3. By adding liquid modifier to the first vibrating feed hopper 11, the liquid modifier can enter the ejection assembly 3 through the metering conveying pipe 12.

[0049] In one embodiment, the aforementioned quantitative conveying pipe 12 can be an ordinary conveying pipe or a professional feeder with an internal screw feeder; it is understood that users can choose according to actual conditions and needs, and there are no specific limitations.

[0050] In another embodiment, due to the intermittent and uncertain nature of the feeding timing, the aforementioned vibrating feeder and quantitative conveying pipe 12 can operate continuously or be set to intermittent operation as needed. For example, a pressure sensor can be installed on the first vibrating feeder 11 to sense the pressure generated inside the first vibrating feeder 11 during feeding, thereby enabling automated, intermittent operation in conjunction with a matching control system. Simultaneously, when a screw feeder is installed inside the quantitative conveying pipe 12, the speed of the screw feeder can be interlocked with the first vibrating feeder 11. For instance, when the first vibrating feeder 11 starts working, the screw feeder starts synchronously; and when the vibration frequency of the first vibrating feeder 11 changes with the feeding amount, the speed of the screw feeder also changes synchronously. It should be understood that the technical solution for interlocking control between the first vibrating feeder 11 and the screw feeder is prior art in this field and is not the focus of this application, and will not be elaborated upon here.

[0051] It should be noted that, in order to avoid excessive impurities from being mixed into the liquid modifier during feeding and conveying, the first vibrating feed hopper 11 and the quantitative conveying pipe 12 are preferably made of materials that are not easy to rust, such as 316L stainless steel.

[0052] Referring to Figure 1, in this embodiment, considering that the hydrocarbon-based graphene dispersion is prone to sedimentation during transportation (sedimentation rate can reach 50% after 10 minutes of standing), to ensure the stability and uniformity of the hydrocarbon-based graphene dispersion system, a pre-stirring component 5 can also be provided between the first feeding component 1 and the spraying component 3. The inlet of the pre-stirring component 5 is connected to the first feeding component 1, and the outlet is connected to the spraying component 3. During operation, the pre-stirring component 5 can continuously stir the liquid modifier, avoiding severe sedimentation of the liquid modifier.

[0053] Specifically, the aforementioned pre-stirring assembly 5 includes a sealed chamber 51. The shape of the sealed chamber 51 can be flexibly designed as needed; for example, the sealed chamber 51 can adopt a cylindrical cavity structure. An inlet and an outlet are respectively provided on opposite sides of the sealed chamber 51. The inlet is connected to one end of the quantitative conveying pipe 12, while the outlet is connected to the aforementioned ejection assembly 3. Simultaneously, the pre-stirring assembly 5 also includes a stirrer 52 disposed inside the sealed chamber 51 and a pre-stirring drive component 53 disposed on the sealed chamber 51 and driven by the stirrer 52.

[0054] In one embodiment, the stirrer 52 can adopt a conventional structure of a first stirring shaft 521 paired with a propeller blade 522; while the pre-stirring drive 53 can be a servo motor, a variable frequency motor, or other similar commonly used drive components, without specific limitations. Taking the use of a variable frequency motor for the pre-stirring drive 53 as an example, the variable frequency motor can be fixed outside the sealed chamber 51; the propeller blade 522 is fixed to one end of the first stirring shaft 521, and the other end of the first stirring shaft 521 can be connected to the output shaft of the variable frequency motor via a coupling. In this way, the variable frequency motor can drive the propeller blade 522 to rotate through the first stirring shaft 521, thereby stirring the liquid modifier in the sealed chamber 51. At the same time, the rotational speed of the first stirring shaft 521 can be adjusted by using the variable frequency motor, thereby adjusting the stirring speed; in practical applications, the adjustment range of the rotational speed of the first stirring shaft 521 can be set as needed, for example, in one application, the adjustable range of the rotational speed of the first stirring shaft 521 can be set to 0-1000 r / min.

[0055] In another embodiment, to further improve the stirring effect on the liquid modifier, the aforementioned stirrer 52 can be a multi-shaft stirrer 52. Specifically, the multi-shaft stirrer 52 includes at least two first stirring shafts 521, each first stirring shaft 521 having a propeller blade 522 fixedly mounted at one end. The end of each first stirring shaft 521 away from the corresponding propeller blade 522 extends to the outside of the sealed chamber 51 and can be connected to a variable frequency motor via a coupling and a planetary mechanism. In practical applications, the propeller blades 522 connected to adjacent first stirring shafts 521 rotate in opposite directions, and their speed can be set within an adjustable range of 0-3000 r / min.

[0056] In another embodiment, to avoid violent vibration when the pre-stirring assembly 5 is working, a shock-absorbing support frame 54 can be provided at the bottom of the sealed chamber 51. The shock-absorbing support frame 54 can not only stabilize the sealed chamber 51, but also play a shock-absorbing role.

[0057] Please refer to Figure 1. In this embodiment, the spraying component 3 is mainly used to atomize and spray the liquid modifier from the pre-stirring component 5 into the mixing and stirring component 4 to ensure the uniformity of the mixing of the liquid modifier and the aggregate.

[0058] Specifically, the aforementioned spraying assembly 3 includes a connecting pipe 31, a booster pump 32, and a control switch 33. One end of the connecting pipe 31 is connected to the outlet of the aforementioned sealed chamber 51, and the other end extends into the interior of the mixing and stirring assembly 4 and is connected to an atomizing nozzle 35.

[0059] Both the booster pump 32 and the control switch 33 are installed on the connecting pipe 31. The booster pump 32 provides pressure to increase the spray pressure of the liquid modifier, while the control switch 33 controls the flow of the liquid modifier, enabling controllable start and stop. Simultaneously, a pressure gauge 34 can be installed on the connecting pipe 31. The pressure gauge 34 not only monitors the internal pressure of the connecting pipe 31 but also connects electrically to the control system and booster pump 32, thereby maintaining the internal pressure of the connecting pipe 31 within a constant range to ensure consistent spraying effect of the liquid modifier.

[0060] The atomizing nozzle 35 described above can be configured with an adjustable structure at the end of the connecting pipe 31. For example, the end of the connecting pipe 31 can be configured as a flexible metal hose, thereby facilitating the adjustment of the spray angle of the atomizing nozzle 35. Simultaneously, a self-cleaning needle valve (not shown in the figure) can also be installed inside the atomizing nozzle 35. The self-cleaning needle valve can perform a self-cleaning function on the internal flow channel of the atomizing nozzle 35, thereby reducing the occurrence of clogging.

[0061] Please refer to Figure 1. The above-mentioned mixing assembly 4 includes a mixing chamber 41 and a mixing mechanism 42 disposed on the mixing chamber 41. The mixing chamber 41 can receive liquid modifier from the first feeding assembly 1 and asphalt aggregate from the second feeding assembly 2, while the mixing mechanism 42 can mix the two to ensure the uniformity of the mixing of liquid modifier and asphalt aggregate.

[0062] Specifically, the atomizing nozzle 35 can extend through one side wall of the mixing chamber 41 into the interior of the mixing chamber 41, and the other side of the mixing chamber 41 can be connected to the aforementioned second feeding assembly 2. In this way, the second feeding assembly 2 can feed asphalt aggregate into the mixing chamber 41, while the atomizing nozzle 35 can spray liquid modifier onto the asphalt aggregate, thereby achieving mixing of the liquid modifier and the asphalt aggregate.

[0063] In this embodiment, the shape of the above-mentioned mixing chamber 41 can be flexibly designed as needed. For example, the shape of the mixing chamber 41 can adopt a cylindrical cavity structure, and there is no specific limitation on this.

[0064] The aforementioned mixing and stirring mechanism 42 includes a stirring paddle 421, a transmission component connected to the stirring paddle 421, and a mixing and stirring drive component 423 connected to the transmission component. Specifically, the transmission component can be a second stirring shaft 422, which can be vertically mounted inside the mixing chamber 41. The stirring paddle 421 can be fixedly mounted at the lower end of the second stirring shaft 422, while the upper end of the second stirring shaft 422 can extend to the outside of the mixing chamber 41 and be connected to the mixing and stirring drive component 423.

[0065] The mixing and stirring drive 423 can be a servo motor, a variable frequency motor, or other similar drive components; no specific limitation is made. Taking a variable frequency motor as an example, the variable frequency motor and the second stirring shaft 422 can be connected via a coupling. In practical applications, the variable frequency motor can easily adjust the speed of the second stirring shaft 422, thereby adjusting the stirring speed.

[0066] In another embodiment, considering the issues of wear and corrosion, a wear-resistant and corrosion-resistant layer can be provided on the surface of the aforementioned impeller 421. This layer can reduce wear and corrosion of the impeller 421, thereby extending its service life. It should be understood that the specific material of this wear-resistant and corrosion-resistant layer can be flexibly selected as needed; for example, it can be a nano-ceramic coating, and no specific limitation is made thereto.

[0067] Since hydrocarbon-based graphene needs to be added in the form of a dispersion (with a water content ≥90% under certain conditions), when it is mixed with aggregates, it will cause a significant increase in the water content of the asphalt-aggregate system, thereby triggering asphalt-aggregate interface delamination.

[0068] To address the aforementioned issues, in another embodiment, a heating component 43 is also provided on the mixing chamber 41. When the mixing and stirring mechanism 42 stirs the liquid modifier and asphalt aggregate, the heating component 43 can simultaneously heat them, removing some moisture, thereby reducing the moisture content of the asphalt-aggregate system and preventing asphalt-aggregate interface peeling.

[0069] Specifically, the heating component 43 can be any component with heating function, such as heating wires evenly laid on the surface of the mixing chamber 41, without any specific limitation. At the same time, the heating temperature of the heating component 43 can also be selected as needed. For example, in one application, the heating temperature of the heating component 43 can be controlled within the range of 0℃-500℃ by means of a matching temperature control system.

[0070] In another embodiment, to avoid violent vibration when the mixing and stirring assembly 4 is working, a shock-absorbing bracket 44 can be provided at the bottom of the mixing chamber 41. The shock-absorbing bracket 44 can not only stabilize the mixing chamber 41, but also play a shock-absorbing role.

[0071] Please refer to Figure 1. In this embodiment, the second feeding assembly 2 is mainly used for feeding asphalt aggregate, facilitating the feeding of asphalt aggregate into the mixing chamber 41. It includes a second vibrating feed hopper 21 and a spiral feeding pipe 22. It should be understood that the specific arrangement of the second vibrating feed hopper 21 and the spiral feeding pipe 22 can refer to the arrangement of the first vibrating feed hopper 11 and the quantitative conveying pipe 12 described above, and will not be repeated here.

[0072] In practical applications, asphalt aggregate is fed into the spiral feed pipe 22 through the second vibrating feed hopper 21, and the spiral feed pipe 22 then transports the asphalt aggregate into the mixing chamber 41.

[0073] To better understand this utility model, the technical solution of this utility model will be described in detail below with reference to Figure 1:

[0074] In actual operation, the liquid modifier (such as a hydrocarbon-based graphene dispersion) is fed into the metering pipeline 12 from the first vibrating feed hopper 11. The metering pipeline 12 then transports the liquid modifier into the sealed chamber 51. Inside the sealed chamber 51, the pre-stirring drive 53 drives the stirrer 52 to rotate and continuously stir the liquid modifier. Simultaneously, the liquid modifier is sprayed through the atomizing nozzle 35 and enters the mixing chamber 41 under the action of the booster pump 32. During this process, the liquid modifier is sprayed while being stirred, effectively preventing the sedimentation of the hydrocarbon-based graphene dispersion.

[0075] While the liquid modifier is continuously sprayed into the mixing chamber 41 through the atomizing nozzle 35, the aggregate is fed into the spiral feeding pipe 22 through the second vibrating feed hopper 21 and enters the mixing chamber 41 under the action of the spiral feeding pipe 22. Thus, as the aggregate is continuously fed into the mixing chamber 41, the atomizing nozzle 35 also continuously sprays the liquid modifier onto the aggregate, thereby achieving mixing of the liquid modifier and the aggregate within the mixing chamber 41.

[0076] While the two are mixed, the mixing and stirring mechanism 42 can continuously stir the liquid modifier and aggregate to ensure that the liquid modifier and aggregate are mixed evenly; while the heating component 43 can continuously heat the aggregate to reduce the moisture in the mixing chamber 41, thereby reducing the moisture content of the asphalt-aggregate system and avoiding asphalt-aggregate interface peeling.

[0077] Through the above methods, the mixing and stirring device provided by this utility model not only realizes the full-process automation of feeding-dispersion-spraying-mixing, but also solves the technical problems of incompatibility between liquid modifiers and existing processes, as well as insufficient coating of liquid phase materials.

[0078] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0079] It should be noted that in this application, relational terms such as "first" and "second" are used merely 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.

[0080] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A mixing and stirring device, characterized in that, include: The first feed assembly is used to supply liquid modifier; The second feeding assembly is used to supply aggregates; The ejection assembly, connected to the first feeding assembly, is used to eject liquid modifier; The system includes a mixing and stirring assembly connected to the spraying assembly and the second feeding assembly, for mixing and stirring the liquid modifier and aggregate; and a heating assembly disposed on the mixing and stirring assembly for heating the liquid modifier and aggregate.

2. The mixing and stirring device according to claim 1, characterized in that, The first feeding assembly includes: a first vibrating feed hopper for feeding liquid modifier; and a quantitative conveying pipe connected to the first vibrating feed hopper and the spraying assembly for conveying liquid modifier into the spraying assembly.

3. The mixing and stirring device according to claim 1, characterized in that, The second feeding assembly includes: a second vibrating feed hopper for feeding aggregate; and a spiral feed pipe connected to the second vibrating feed hopper and the mixing assembly for conveying aggregate into the mixing assembly.

4. The mixing and stirring device according to claim 1, characterized in that, The ejection assembly includes: a connecting pipe for connecting the first feeding assembly and the mixing assembly; a booster pump disposed on the connecting pipe for providing pressure; and a control switch disposed on the connecting pipe for controlling the flow of the liquid modifier; wherein, the end of the connecting pipe away from the first feeding assembly extends into the interior of the mixing assembly and is provided with an atomizing nozzle.

5. The mixing and stirring device according to claim 4, characterized in that, The atomizing nozzle is adjustable at the end of the connecting pipe, and a self-cleaning needle valve is also provided inside the atomizing nozzle.

6. The mixing and stirring device according to claim 1, characterized in that, The mixing assembly includes: a mixing chamber connected to the ejection assembly and the second feeding assembly, for receiving and mixing the liquid modifier and aggregate; and a mixing mechanism, the mixing mechanism including a stirring paddle, a transmission component connected to the stirring paddle, and a mixing drive component connected to the transmission component; wherein, the heating assembly is disposed on the mixing chamber.

7. The mixing and stirring device according to claim 6, characterized in that, The surface of the stirring paddle is provided with a wear-resistant and corrosion-resistant layer.

8. The mixing and stirring apparatus according to any one of claims 1-7, characterized in that, A pre-stirring component for stirring the liquid modifier is also provided between the first feeding component and the spraying component.

9. The mixing and stirring device according to claim 8, characterized in that, The pre-stirring assembly includes: a sealed chamber connected to the first feeding assembly and the ejection assembly respectively; a stirrer movably disposed in the sealed chamber for stirring the liquid modifier; and a pre-stirring drive unit disposed on the sealed chamber and drivenly connected to the stirrer for driving the stirrer to move.

10. The mixing and stirring apparatus according to claim 9, characterized in that, The stirrer includes at least two first stirring shafts, each first stirring shaft is connected to a propeller blade, and the directions of any two adjacent first stirring shafts are reversed.

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