A kind of dump waterproof layer paving material stirring and paving device

Abstract

This utility model relates to a mixing and paving device for a waterproof layer paving material in a spoil heap, comprising: a vehicle body; a mixing unit located on the vehicle body, including a mixing tank with a first inlet and a first outlet, and a first mixing mechanism; a conveying and mixing unit, including a conveying pipe with a second inlet and a second outlet, and a second mixing mechanism; and a dropping and mixing unit located below the second outlet, including a dropping pipe with a third inlet and a dropping outlet, and a third mixing mechanism; the first outlet is connected to the second inlet, and the second outlet is connected to the third inlet. This utility model, by setting up a three-stage continuous mixing structure including the mixing unit, the conveying and mixing unit, and the dropping and mixing unit, fully mixes the mudstone-slag-based alkali-activated material, ensuring that the paving material remains uniform throughout the entire process from mixing to dropping, avoiding material segregation and localized agglomeration, and improving the performance of the waterproof layer.

Description

Technical Field

[0001] This utility model relates to the field of paving equipment technology, and in particular to a mixing and paving device for the waterproof layer paving material in a spoil heap. Background Technology

[0002] Open-pit coal mine spoil heaps are typically constructed by directly piling up stripped rock layers, mudstone, and sandstone, resulting in a loose material structure, uneven particle size distribution, high overall porosity, and strong permeability. Surface runoff from the spoil heap easily seeps down along fissures, making it difficult to retain moisture in the area. This hinders vegetation growth and ecological restoration, and long-term leakage can also pollute underlying aquifers, jeopardizing groundwater resources. Traditional seepage prevention measures, using cement-based, bentonite-based, or geotextile composite layers as waterproofing layers, suffer from high energy consumption, complex construction, and poor durability.

[0003] In recent years, mudstone-slag-based alkali-activated materials, composed of mudstone powder, slag powder, waste rock fine aggregate, and a water glass-sodium hydroxide activator with a modulus of 1.0, have proven to be an effective solution for constructing high-strength, low-permeability artificial impermeable layers. This material possesses excellent mechanical properties, low permeability, and environmental friendliness. However, existing paving equipment has significant shortcomings when using this material, specifically in the following two aspects:

[0004] (1) Insufficient mixing: Existing paving equipment is only equipped with a single mixing tank. The components of mudstone-slag-based alkali-activated materials have large differences in density and viscosity, and the alkali activation reaction is time-sensitive (it is prone to solidification over time). The mixing capacity of a single mixing tank is limited, making it difficult to ensure that the components (especially water glass-sodium hydroxide activator) and solid powders (mudstone powder, slag powder) are fully and uniformly mixed in a short time. More importantly, the lack of a continuous mixing or disturbance mechanism during the process of transporting the material from the mixing tank to the paving point can easily lead to material segregation or local solidification, affecting the performance of the waterproof layer.

[0005] (2) Failure to compact in a timely manner after paving: In existing technology, after the paving material falls from the chute, it is spread out by its own weight or initially leveled by a simple scraper. A vibratory compaction vehicle is set up behind the paving device. For safety reasons, a certain distance needs to be maintained between the two devices. Moreover, for the convenience of operation, the paving device in front usually completes the paving work in a part of the area and then continues to move forward, while the vibratory compaction vehicle behind compacts the part of the area. This results in untimely compaction of the material after paving, which easily leads to material segregation and affects the performance of the waterproof layer. Utility Model Content

[0006] In view of the shortcomings of the prior art, the present invention provides a mixing and spreading device for the water-retaining layer of spoil heap, which is used to solve at least one of the above-mentioned technical problems.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A mixing and spreading device for the impermeable layer paving material in a spoil heap, comprising:

[0009] Vehicle body;

[0010] A mixing unit, located on the vehicle body, includes a mixing tank with a first inlet and a first outlet, and a first mixing mechanism. The first mixing mechanism includes a mixing rod assembly disposed inside the mixing tank.

[0011] A conveying and mixing unit, disposed adjacent to the mixing and mixing unit, includes a conveying pipe having a second inlet and a second outlet, and a second mixing mechanism, the second mixing mechanism including a first auger disposed within the conveying pipe; and

[0012] The material discharge and mixing unit is located below the second discharge port and includes a material discharge pipe with a third inlet and a discharge outlet, as well as a third mixing mechanism. The third mixing mechanism includes a second auger disposed inside the material discharge pipe.

[0013] The first discharge port is connected to the second inlet port, the second discharge port is connected to the third inlet port, and the discharge port is located on the bottom side of the vehicle body and is distributed in multiple ways along the lateral direction of the vehicle body.

[0014] In one embodiment, the first discharge port is located on the bottom side of the mixing tank, the second inlet is located at one end of the conveying pipe, the second discharge port is located at the bottom of the other end of the conveying pipe, and the third inlet is located at the top of the discharge pipe.

[0015] In one embodiment, the first stirring mechanism further includes a first motor, which is mounted at the bottom of the vehicle body. The stirring rod assembly is vertically disposed inside the stirring tank. The rotating shaft of the stirring rod assembly is rotatably connected to the bottom of the stirring tank. The rotating shaft passes through the stirring tank and the vehicle body and is fixedly connected to the output end of the first motor.

[0016] In one embodiment, the second stirring mechanism further includes a second motor, which is installed at one end of the conveying pipe where a second discharge port is provided, and the first auger is fixedly connected to the output end of the second motor.

[0017] In one embodiment, the third stirring mechanism further includes a third motor, which is installed at one end of the discharge pipe. The second auger is fixedly connected to the output end of the third motor. The third inlet is located at the top of the discharge pipe at the middle position in its length direction. The second auger includes two coaxially symmetrical auger blades with opposite spiral directions.

[0018] In one embodiment, the spoil heap waterproofing layer paving material mixing and paving device further includes a vibration unit disposed at the rear of the vehicle body. The vibration unit includes a vibration plate and a vibration motor. The vibration plate is movably installed on the lower side of the rear of the vehicle body, and the vibration motor is fixedly disposed on the vibration plate.

[0019] In one embodiment, the vibrating unit further includes a hydraulic telescopic cylinder, which is installed at the rear of the vehicle body with its output end facing downward and is hinged to the vibrating plate.

[0020] In one embodiment, the front end of the vibrating plate is provided with a guide plate, the guide plate including a forward-curved arc structure.

[0021] In one embodiment, the front end of the guide plate is provided with a plurality of extended vibrating plates, which are respectively located below the space between each of the material discharge ports.

[0022] In one embodiment, the bottom end of the vibrating plate and the extended vibrating plate is provided with a plurality of vibrating columns.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention employs a three-stage continuous mixing structure comprising a mixing unit, a conveying mixing unit, and a material discharge mixing unit to thoroughly mix mudstone-slag-based alkali-activated materials. This ensures that the paving material remains uniform throughout the entire process from mixing to discharge, preventing material segregation and localized agglomeration, and improving the performance of the waterproof layer. Multiple material discharge ports are provided along the transverse direction of the vehicle body, making the paving material discharge more uniform and facilitating subsequent vibration compaction.

[0025] This invention also incorporates a vibration unit, which ensures that the paving material is immediately compacted after being laid, saving on construction equipment and personnel costs, improving construction efficiency, and solving the problem of material segregation affecting the performance of the waterproof layer due to untimely compaction. Attached Figure Description

[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0027] Figure 1This is a front view of a mixing and spreading device for the waterproof layer paving material in a spoil heap.

[0028] Figure 2 This is a cross-sectional view of a mixing and spreading device for the waterproof layer paving material in a spoil heap.

[0029] Figure 3 This is a top view of a mixing and spreading device for the waterproof layer paving material in a spoil heap.

[0030] Figure 4 yes Figure 1 AA cross-section view;

[0031] Figure 5 This is a bottom view of a mixing and spreading device for the waterproof layer paving material in a spoil heap.

[0032] Figure label:

[0033] 10. Vehicle body;

[0034] 20. Mixing and stirring unit; 21. Mixing tank; 22. First motor; 23. Stirring rod assembly;

[0035] 30. Conveying and mixing unit; 31. Second motor; 32. Conveying pipe; 321. Second discharge port; 33. First auger;

[0036] 40. Material feeding and mixing unit; 41. Material feeding pipe; 411. Material feeding port; 42. Third motor; 43. Second auger;

[0037] 50. Vibration unit; 51. Vibration motor; 52. Vibration plate; 53. Hydraulic telescopic cylinder; 54. Guide plate; 55. Extended vibration plate; 56. Vibration column. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a joint; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] like Figures 1 to 5 As shown, a mixing and paving device for a spoil heap waterproofing layer includes: a vehicle body 10, a mixing unit 20, a conveying and mixing unit 30, and a material discharge and mixing unit 40. The mixing unit 20, located on the vehicle body 10, includes a mixing tank 21 with a first inlet and a first outlet, and a first mixing mechanism. The first mixing mechanism includes a mixing rod assembly 23 disposed within the mixing tank 21. The mixing unit 20 is used to mix and blend the paving material. In this embodiment, the first inlet is located at the top of the mixing tank 21, facilitating the addition of paving material into the mixing tank 21 using a hopper or loader. The conveying and mixing unit 30, adjacent to the mixing unit 20, includes a conveying pipe 32 with a second inlet and a second outlet 321, and a second mixing mechanism. The second mixing mechanism includes a first auger 33 disposed within the conveying pipe 32, and the first auger 33 is rotatably connected to the conveying pipe 32. A conveying and mixing unit 30 connects the mixing and mixing unit 20 and the material discharge mixing unit 40. It conveys paving material from the mixing and mixing unit 20 to the material discharge mixing unit 40 while simultaneously mixing it, ensuring uniformity of the paving material during conveying. The material discharge mixing unit 40 is located below the second discharge port 321 and includes a discharge pipe 41 with a third inlet and a discharge port 411, as well as a third mixing mechanism. The third mixing mechanism includes a second auger 43 disposed within the discharge pipe 41, which is rotatably connected to the discharge pipe 41. The first discharge port is connected to the second inlet, and the second discharge port 321 is connected to the third inlet. The discharge ports 411 are located on the bottom side of the vehicle body 10 and are distributed in multiple locations along the transverse direction of the vehicle body 10. Specifically, in this embodiment, three discharge ports 411 are evenly distributed along the transverse direction of the vehicle body 10. In other embodiments, more discharge ports 411 can be provided, and the spacing between each discharge port 411 can be unequal.

[0046] This embodiment uses a three-stage continuous mixing structure, including a mixing unit 20, a conveying mixing unit 30, and a material dropping mixing unit 40, to fully mix the paving material (mudstone-slag-based alkali-activated material). This ensures that the paving material remains uniform throughout the entire process from mixing to dropping, avoiding material segregation and localized agglomeration, and improving the performance of the waterproof layer. Furthermore, by setting multiple material dropping ports 411, the paving material can be dropped more evenly in the transverse direction along the vehicle body 10, which is more conducive to subsequent vibration compaction.

[0047] like Figure 2 As shown, in some embodiments, the first discharge port is located on the bottom side of the mixing tank 21, the second inlet is located at one end of the conveying pipe 32, the second discharge port 321 is located at the bottom of the other end of the conveying pipe 32, and the third inlet is located at the top of the discharge pipe 41.

[0048] This embodiment, by setting the first discharge port at the bottom side of the mixing tank 21 and the second inlet at one end of the conveying pipe 32, is more conducive to the conveying of the paving material. Figure 2 As shown, the lower part of the mixing tank 21 has a converging conical structure. Positioning the first discharge port on the bottom side of the mixing tank 21 is more conducive to the paving material being discharged from the mixing tank 21. It also allows for a longer conveying pipe 32 when space is limited. Figure 3 As shown, in this embodiment, the conveying pipe 32 is arranged along the length direction of the vehicle body 10. In other embodiments, the conveying pipe 32 can also be arranged at a certain angle to the length direction of the vehicle body 10 in the horizontal plane. This arrangement can further extend the length of the conveying pipe 32 without changing the length of the vehicle body 10. In this embodiment, by setting the second discharge port 321 at the bottom of the other end of the conveying pipe 32 and the third inlet port at the top of the discharge pipe 41, the paving material is more likely to enter the discharge pipe 41 through the second discharge port 321 and the third inlet port under the combined action of the first auger 33 and gravity.

[0049] like Figure 2 As shown, in some embodiments, the first stirring mechanism further includes a first motor 22, which is installed at the bottom of the vehicle body 10. The stirring rod assembly 23 is vertically arranged inside the stirring tank 21. The rotating shaft of the stirring rod assembly 23 is rotatably connected to the bottom of the stirring tank 21. The rotating shaft passes through the stirring tank 21 and the vehicle body 10 and is fixedly connected to the output end of the first motor 22.

[0050] In this embodiment, by installing a first motor 22 connected to the mixing rod assembly 23 at the bottom of the vehicle body 10, the space of the vehicle body 10 can be utilized more fully, and the overall height of the mixing and paving device can be reduced. The first motor 22 drives the mixing rod assembly 23 to rotate, and the mudstone-slag-based alkali-activated material composed of mudstone powder, slag powder, waste stone fine aggregate and water glass-sodium hydroxide activator is thoroughly mixed in the mixing tank 21.

[0051] like Figure 2 As shown, in some embodiments, the second stirring mechanism further includes a second motor 31, which is installed at one end of the conveying pipe 32 where the second discharge port 321 is provided, and the first auger 33 is fixedly connected to the output end of the second motor 31.

[0052] In this embodiment, a first auger 33 driven by a second motor 31 is installed inside the conveying pipe 32 to further and fully mix the paving material during the conveying process, thereby maintaining its uniformity.

[0053] like Figure 3 and Figure 4 As shown, in some embodiments, the third stirring mechanism further includes a third motor 42, which is installed at one end of the discharge pipe 41. The second auger 43 is fixedly connected to the output end of the third motor 42. The third inlet is located at the top of the discharge pipe 41 at the middle position in its length direction and communicates with the second outlet 321. The second auger 43 includes two auger blades arranged coaxially and symmetrically with opposite spiral directions.

[0054] In this embodiment, a second auger 43 driven by a third motor 42 is installed inside the material drop pipe 41 to further and thoroughly mix the paving material during the dropping process, maintaining its uniformity. This embodiment connects the third inlet to the top of the material drop pipe 41 at the middle position along its length, and the second auger 43 includes two coaxially symmetrical auger blades with opposite spiral directions. This allows the paving material entering the material drop pipe 41 to move from the center of the pipe 41 towards both ends while being mixed. As it passes through the drop outlets 411, it is dropped and spread. The drop outlet 411, located at the center of the pipe 41, also receives material, resulting in more uniform dropping and facilitating subsequent vibration compaction.

[0055] In this embodiment, the third inlet is located at the middle of the length of the discharge pipe 41. In other embodiments, the third inlet can also be located at other positions of the discharge pipe 41, such as the top of one end of the discharge pipe 41. In this case, the second auger 43 is configured as an auger blade with only a one-way spiral. The paving material is stirred, conveyed and discharged from one end of the discharge pipe 41 to the other end under the action of the second auger 43.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, the mixing and paving device for the waterproof layer of the spoil heap also includes a vibration unit 50, which is located at the rear of the vehicle body 10. The vibration unit 50 includes a vibration plate 52 and a vibration motor 51. The vibration plate 52 is movably installed on the lower side of the rear of the vehicle body 10, and the vibration motor 51 is fixedly installed on the vibration plate 52.

[0057] This embodiment sets up a vibration unit 50 at the rear of the vehicle body 10, so that the paving material is vibrated and compacted immediately after it is laid, which saves the investment of construction equipment and personnel, improves construction efficiency, and solves the problem of material segregation affecting the performance of the waterproof layer due to untimely compaction.

[0058] like Figure 2 As shown, in some embodiments, the vibrating unit 50 further includes a hydraulic telescopic cylinder 53, which is installed at the rear of the vehicle body 10 with its output end facing downward and hinged to the vibrating plate 52. To improve overall stability, this embodiment uses two hydraulic telescopic cylinders 53, which are respectively installed on the left and right sides of the upper surface of the vehicle body 10 and pass through the vehicle body 10, with their output ends located on the lower side of the vehicle body 10.

[0059] In this embodiment, a hydraulic telescopic cylinder 53 is hinged to the vibrating plate 52, with its output end facing downwards. By adjusting the extension and retraction of the output end of the hydraulic telescopic cylinder 53, the horizontal height of the vibrating plate 52 can be adjusted, thereby controlling the thickness of the waterproof layer. This embodiment achieves a movable connection between the output end of the hydraulic telescopic cylinder 53 and the vibrating plate 52, allowing the vibrating plate 52, under the action of the vibrating motor 51, to vibrate the paving material and form a waterproof layer.

[0060] like Figure 2 As shown, in some embodiments, the front end of the vibrating plate 52 is provided with a guide plate 54, which includes a forward-curved arc structure.

[0061] In this embodiment, by setting a guide plate 54 at the front end of the vibrating plate 52 and making the guide plate 54 include a forward-curved arc structure, excess paving material can be continuously pushed forward to maintain the required thickness of the paving layer.

[0062] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the front end of the guide plate 54 is provided with a plurality of extended vibrating plates 55 at intervals, and the plurality of extended vibrating plates 55 are respectively located below the space between each material discharge port 411.

[0063] In this embodiment, by setting multiple extended vibrating plates 55 at intervals at the front end of the guide plate 54, and placing them below the space between each material drop port 411, the compaction effect of the paving layer below the material drop port 411 can be improved.

[0064] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the bottom ends of the vibrating plate 52 and the extended vibrating plate 55 are provided with a plurality of vibrating columns 56.

[0065] This embodiment further improves the compaction effect by setting multiple vibratory columns 56 at the bottom of the vibratory plate 52 and the extended vibratory plate 55. The vibratory columns 56 are inserted into the paving material, which further enhances the compaction effect. The temporary micro-grooves / holes formed by the vibratory columns 56 are completely eliminated during the material's self-leveling process, subsequent vibration smoothing, and alkali activation reaction, and will not adversely affect the continuity, compactness, and impermeability of the waterproof layer. This is because the vibratory columns 56 are inserted into the paving material at a shallow depth, about 1-3 cm. The vibratory columns 56 form continuous, shallow longitudinal micro-marks in the paving material, with a depth much smaller than the paving layer thickness (usually ≥10 cm), and are smoothed out in real time by the subsequent vibratory plate 52. The waterproof layer usually needs to be constructed in layers (each layer 10-20 cm). When the upper layer is paved, the vibration load will further compact the lower layer material, completely eliminating any residual micro-marks. The final waterproof layer is a continuous integral structure.

[0066] Working principle: The first motor 22 drives the mixing rod assembly 23 to rotate, thoroughly mixing the mudstone-slag-based alkali-activated material, composed of mudstone powder, slag powder, waste stone fine aggregate, and water glass-sodium hydroxide activator, in the mixing tank 21. The mixed paving material then enters the conveying pipe 32 from the bottom, and after being mixed and conveyed by the first auger 33, it enters the discharge pipe 41 from the discharge port 321. The third motor 42 drives the second auger 43 to rotate. Because the second auger 43 is equipped with auger blades with opposite spiral directions, the paving material entering the discharge pipe 41 moves to both ends and is paved when passing through the discharge port 411. At the same time, the hydraulic telescopic cylinder 53 moves the vibrating plate 52 downward to the set height, and the vibrating motor 51 is turned on to vibrate. After being vibrated and smoothed by the vibrating plate 52, the required thickness of the waterproof layer can be accurately obtained. The guide plate 54 continuously pushes the excess paving material forward to maintain the required thickness of the paving layer. Multiple extended vibratory plates 55 are located between each material drop outlet 411, which can improve the compaction effect below the material drop outlet 411; the vibratory column 56 is inserted into the paving material to further improve the compaction effect.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] This invention employs a three-stage continuous mixing structure comprising a mixing unit 20, a conveying mixing unit 30, and a material discharge mixing unit 40 to thoroughly mix the mudstone-slag-based alkali-activated material. This ensures that the paving material remains uniform throughout the entire process from mixing to discharge, preventing material segregation and localized agglomeration, and improving the performance of the waterproof layer. Multiple material discharge ports 411 are provided along the transverse direction of the vehicle body 10, making the paving material discharge more uniform and facilitating subsequent vibration compaction.

[0069] This invention also incorporates a vibration unit 50, which ensures that the paving material is immediately vibrated and compacted after being laid, saving on construction equipment and personnel input, improving construction efficiency, and solving the problem of material segregation affecting the performance of the waterproof layer due to untimely compaction.

[0070] It is worth noting that the control components and modules used in the motors mentioned above in this utility model are all existing technologies, and the hydraulic source, control valves and pipelines used in the hydraulic telescopic cylinder 53 mentioned above are all existing technologies. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the software and methods.

[0071] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dump embankment waterproof layer paving material mixing and paving device, characterized in that, include: Vehicle body; A mixing unit, located on the vehicle body, includes a mixing tank with a first inlet and a first outlet, and a first mixing mechanism. The first mixing mechanism includes a mixing rod assembly disposed inside the mixing tank. A conveying and mixing unit, disposed adjacent to the mixing and mixing unit, includes a conveying pipe having a second inlet and a second outlet, and a second mixing mechanism, the second mixing mechanism including a first auger disposed within the conveying pipe; and The material discharge and mixing unit is located below the second discharge port and includes a material discharge pipe with a third inlet and a discharge outlet, as well as a third mixing mechanism. The third mixing mechanism includes a second auger disposed inside the material discharge pipe. The first discharge port is connected to the second inlet port, the second discharge port is connected to the third inlet port, and the discharge port is located on the bottom side of the vehicle body and is distributed in multiple ways along the lateral direction of the vehicle body.

2. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 1, characterized in that: The first discharge port is located at the bottom side of the mixing tank, the second inlet is located at one end of the conveying pipe, the second discharge port is located at the bottom of the other end of the conveying pipe, and the third inlet is located at the top of the discharge pipe.

3. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 2, characterized in that: The first stirring mechanism further includes a first motor, which is installed at the bottom of the vehicle body. The stirring rod assembly is vertically arranged inside the stirring tank. The rotating shaft of the stirring rod assembly is rotatably connected to the bottom of the stirring tank. The rotating shaft passes through the stirring tank and the vehicle body and is fixedly connected to the output end of the first motor.

4. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 2, characterized in that: The second stirring mechanism also includes a second motor, which is installed at the end of the conveying pipe that has a second discharge port, and the first auger is fixedly connected to the output end of the second motor.

5. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 2, characterized in that: The third stirring mechanism also includes a third motor, which is installed at one end of the discharge pipe. The second auger is fixedly connected to the output end of the third motor. The third inlet is located at the top of the discharge pipe at the middle position in its length direction. The second auger includes two coaxially symmetrical auger blades with opposite spiral directions.

6. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 1, characterized in that: It also includes a vibration unit, which is located at the rear of the vehicle body. The vibration unit includes a vibration plate and a vibration motor. The vibration plate is movably installed on the lower side of the rear of the vehicle body, and the vibration motor is fixedly installed on the vibration plate.

7. The mixing and spreading device for the waterproof layer paving material of the spoil heap according to claim 6, characterized in that: The vibration unit also includes a hydraulic telescopic cylinder, which is installed at the rear of the vehicle body with its output end facing downwards and is hinged to the vibration plate.

8. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 6, characterized in that: The front end of the vibrating plate is provided with a guide plate, which includes a forward-curved arc structure.

9. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 8, characterized in that: The front end of the guide plate is provided with multiple extended vibrating plates, which are located below the space between each of the material discharge ports.

10. The mixing and spreading device for the waterproof layer paving material in the spoil heap according to claim 9, characterized in that: The bottom end of the vibrating plate and the extended vibrating plate is provided with multiple vibrating columns.

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