Uniform material spraying device for asphalt mixing

Abstract

The utility model relates to the technical field of asphalt concrete, in particular to a uniform spraying device for asphalt mixing, which comprises an upper shell, a lower shell and a material conveying fan positioned outside the upper shell and the lower shell, a stirring cavity is formed between the upper shell and the lower shell, a stirring device is rotatably arranged in the stirring cavity, and the material conveying fan is connected with the stirring device. The stirring device comprises a rod body and a stirring rod detachably connected to the rod body, a vertical material injection hole is formed in the rod body in the axial direction, the vertical material injection hole extends downwards from the upper end face of the rod body, and the vertical material injection hole is filled with fiber materials; a horizontal injection hole is formed in the stirring rod in the axial direction, and the horizontal injection hole is communicated with the vertical injection hole; a plurality of release holes are formed in the stirring rod in the radial direction and penetrate through the wall body of the stirring rod, and the release holes are communicated with the horizontal injection hole and the stirring cavity; and the material conveying fan is communicated with the vertical injection hole.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt concrete, in particular to a uniform spraying device for asphalt mixture. Background Art

[0002] In the field of highway and municipal engineering, the biggest problem of asphalt concrete is that the road surface is prone to cracks. In order to solve this problem, basalt fiber can be added to the asphalt concrete surface layer. The application of basalt fiber in asphalt concrete pavement can extend the service life of the pavement, which has a strong social significance for the sustainable development of highway and municipal road construction. Basalt fiber is a continuous fiber drawn from natural basalt. The basalt stone is melted at 1450℃~1500℃ and then drawn at high speed through a platinum-rhodium alloy wire drawing plate. The length is usually between 5 and 50mm. Basalt continuous fiber is not only high in strength, but also has many excellent properties such as electrical insulation, corrosion resistance, and high temperature resistance. However, basalt fiber has high hydrophobicity. Directly adding it to asphalt or using conventional mixing and mixing will cause uneven distribution of basalt fiber in asphalt, affecting the stability of use.

[0003] In order to solve the above technical problems, Chinese patent CN219315417U discloses a fiber asphalt mixture mixing device, including a base, the top of the base is connected to a liftable top beam through a hydraulic rod, a control console is arranged on one side of the base, a stirring pot is arranged inside the control console, a stirring shaft is arranged in the stirring pot, and the side of the stirring pot away from the control console is connected to the base through a tipping shaft wheel; a fiber bin, an aggregate bin and an asphalt bin are arranged on the top beam; a dust cover adapted to the size of the stirring pot is arranged below the top beam; and a discharge bin is arranged on the base below the stirring pot. The above patent can make the fiber dispersed more evenly in the mixture through fiber dispersion and asphalt spraying operations, combined with a horizontal stirring pot, but the high viscosity of asphalt still causes the lower fibers to be unable to be fully stirred, affecting the stability of use.

[0004] Therefore, it is necessary for those skilled in the art to provide a uniform spraying device for asphalt mixing, improve the uniformity and stability of basalt fiber distribution in asphalt during mixing, and improve the quality of asphalt. Utility Model Content

[0005] The utility model aims to provide a uniform spraying device for asphalt mixing, so as to solve the technical problem in the prior art that when asphalt is mixed, the added basalt fiber is not evenly and stably distributed, thus affecting the overall quality of asphalt.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a uniform spraying device for asphalt mixing, comprising an upper shell, a lower shell and a material conveying fan located outside the upper shell and the lower shell, a stirring cavity is formed between the upper shell and the lower shell, a stirring device is rotatably provided in the stirring cavity, the stirring device comprises a rod body and a stirring rod detachably connected to the rod body, a vertical injection hole is axially opened on the rod body, the vertical injection hole extends downward from the upper end surface of the rod body; a horizontal injection hole is axially opened on the stirring rod, the horizontal injection hole is connected to the vertical injection hole; a release hole is radially opened on the stirring rod, a plurality of release holes are provided and penetrate the wall of the stirring rod, the release hole is connected to the horizontal injection hole and the stirring cavity; the material conveying fan is connected to the vertical injection hole.

[0007] Furthermore, the stirring rods are provided in plurality and are evenly arranged on the rod body, the axes of the stirring rods are perpendicular to the axis of the rod body, and the length of the stirring rod located at the upper part of the rod body is greater than the length of the stirring rod located at the lower part of the rod body.

[0008] Furthermore, the stirring rod is threadedly connected to the rod body, and the length of the stirring rod is arranged according to the inner wall contour of the stirring cavity.

[0009] Furthermore, the feed end of the material conveying fan is connected to a first conveying pipe, and the discharge end of the material conveying fan is connected to a second conveying pipe. The second conveying pipe is detachably connected to the end of the rod body and connected to the vertical injection hole.

[0010] Furthermore, one end of the rod body is rotatably connected to the lower shell body, and the other end of the rod body passes through the shell body of the upper shell body and extends outward.

[0011] Furthermore, the rod body is rotatably connected to the upper shell; a transmission wheel is provided on the end of the rod body located outside the upper shell, and the transmission wheel is externally connected to a motor.

[0012] Furthermore, the fiber material is basalt fiber; the diameter of the basalt fiber is 5 to 20 μm, and the length is 2 to 7 mm.

[0013] Furthermore, the aperture of the release hole is smaller than the aperture of the horizontal injection hole, and the pressure in the horizontal injection hole is greater than the pressure in the stirring cavity.

[0014] Furthermore, the upper shell and the lower shell are semicircular structures with a hollow interior, the upper shell is provided with a loading port at the upper portion, and the lower shell is provided with a unloading port at the lower portion.

[0015] The beneficial effects of the utility model are as follows: the utility model realizes continuous delivery of basalt fiber into the material during the stirring process, ensuring the uniformity and stability of the mixture. Since a plurality of release holes are provided and evenly distributed on the stirring rod, during the stirring process, the basalt fiber is simultaneously released to different parts of the material as needed, thereby improving the uniformity of the distribution of the basalt fiber at all levels in the material. Compared with the prior art of directly pouring a large amount of basalt fiber into the material for stirring, the utility model effectively prevents the accumulation of basalt fiber in the material, so that the basalt fiber can be distributed into the material at the same time, thereby reducing the stirring time and effectively reducing the production cost. At the same time, the utility model uses the material conveying fan to effectively maintain the pressure in the horizontal injection hole, prevent the material in the stirring cavity from flowing in, and ensure the stability of the use of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic diagram of the uniform spraying device for asphalt mixing of the utility model.

[0017] Figure 2 It is an exploded view of the uniform spraying device for asphalt mixing of the utility model.

[0018] Figure 3 It is a top view of the uniform spraying device for asphalt mixing of the utility model.

[0019] Figure 4 yes Figure 3 Sectional view along AA.

[0020] The components in the accompanying drawings are marked as follows: 10, upper shell; 11, lower shell; 12, stirring cavity; 13, stirring device; 131, rod body; 132, stirring rod; 133, vertical injection hole; 134, horizontal injection hole; 135, release hole; 14, upper feeding port; 15, lower feeding port; 16, transmission wheel; 20, material conveying fan; 21, first feed pipe; 22, second feed pipe. DETAILED DESCRIPTION

[0021] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0022] See also Figure 1 , Figure 2The utility model provides a uniform spraying device for asphalt mixing, including an upper shell 10 and a lower shell 11. The upper shell 10 and the lower shell 11 are in a semicircular structure with a hollow interior. A stirring cavity 12 is formed between the upper shell 10 and the lower shell 11. A stirring device 13 is rotatably provided in the stirring cavity 12. A loading port 14 is provided at the upper part of the upper shell 10, and a discharge port 15 is provided at the lower part of the lower shell 11. When in use, materials are added into the stirring cavity 12 from the loading port 14, and the materials are stirred by the stirring device 13 to ensure the sufficiency and stability of the stirring. At the same time, the relatively closed stirring cavity 12 can effectively reduce dust dispersion and improve the cleanliness of the processing environment. After the stirring is completed, the materials are discharged from the discharge port 15 to complete the stirring process.

[0023] Furthermore, the stirring device 13 includes a rod body 131 and a stirring rod 132 detachably connected to the rod body 131, one end of the rod body 131 is rotatably connected to the lower housing 11 by a bearing, the other end of the rod body 131 penetrates the housing of the upper housing 10 and extends outward, and the rod body 131 is rotatably connected to the upper housing 10 by a bearing. A transmission wheel 16 is provided on the end of the rod body 131 located outside the upper housing 10, and the transmission wheel 16 is driven by a motor (not shown). When in use, the motor drives the transmission wheel 16 to rotate by chain drive or gear drive, thereby driving the rod body 131 to rotate.

[0024] Furthermore, there are multiple stirring rods 132 evenly arranged on the rod body 131, the axis of the stirring rod 132 is perpendicular to the axis of the rod body 131, and the length of the stirring rod 132 located at the upper part of the rod body 131 is greater than the length of the stirring rod 132 located at the lower part of the rod body 131.

[0025] In this embodiment, the stirring rod 132 is threadedly connected to the rod body 131, and the length of the stirring rod 132 is arranged according to the inner wall profile of the stirring cavity 12. This ensures the sufficiency and stability of stirring, reduces accumulation in corners, and improves material quality.

[0026] For further information, see Figure 3 , Figure 4, a vertical injection hole 133 is axially provided on the rod body 131, and the vertical injection hole 133 extends downward from the upper end surface of the rod body 131, and the vertical injection hole 133 is filled with fiber material; a horizontal injection hole 134 is axially provided on the stirring rod 132, and the horizontal injection hole 134 is connected to the vertical injection hole 133. A release hole 135 is radially provided on the stirring rod 132, and a plurality of release holes 135 are provided and penetrate the wall of the stirring rod 132, and the release hole 135 is connected to the horizontal injection hole 134 and the stirring cavity 12. Preferably, the fiber material includes but is not limited to basalt fiber. The diameter of the basalt fiber is 5 to 20 μm, and the length is 2 to 7 mm. The shorter diameter of the basalt fiber can effectively ensure the stability of transmission and prevent blockage.

[0027] When in use, the basalt fiber is introduced into the vertical injection hole 133, and then discharged from the release hole 135 into the stirring cavity 12 after passing through the horizontal injection hole 134. In this way, the utility model realizes the continuous delivery of basalt fiber into the material during the stirring process, ensuring the uniformity and stability of the mixed material. Since the release holes 135 are provided in multiple numbers and evenly distributed on the stirring rod 132, during the stirring process, the basalt fiber is simultaneously released to different parts of the material as needed, thereby improving the uniformity of the distribution of the basalt fiber at all levels in the material. Compared with the prior art of directly pouring a large amount of basalt fiber into the material for stirring, the utility model effectively prevents the accumulation of basalt fiber in the material, so that the basalt fiber can be distributed in the material at the same time, thereby reducing the stirring time and effectively reducing the production cost.

[0028] In this embodiment, the aperture of the release hole 135 is smaller than the aperture of the horizontal injection hole 134, and the pressure in the horizontal injection hole 134 is greater than the pressure in the stirring cavity 12; thereby, the viscosity of the material is utilized to reduce the material from entering the horizontal injection hole 134 from the release hole 135, and at the same time, the pressure difference between the horizontal injection hole 134 and the stirring cavity 12 is utilized to further reduce the inflow of the material, thereby improving the stability of the use of the present invention.

[0029] Furthermore, the utility model further comprises a material conveying fan 20, and the material conveying fan 20 is connected to the vertical injection hole 133. Specifically, the material conveying fan 20 is located outside the upper shell 10 and the lower shell 11, and the feeding end of the material conveying fan 20 is connected to a first conveying pipe 21, and the discharging end of the material conveying fan 20 is connected to a second conveying pipe 22, and the second conveying pipe 22 is detachably connected to the end of the rod body 131 and connected to the vertical injection hole 133.

[0030] When in use, the material conveying fan 20 draws the fiber material from the first conveying pipe 21 into the second conveying pipe 22, passes through the vertical injection hole 133 and the horizontal injection hole 134, and is discharged from the release hole 135 into the stirring cavity 12. The conveying and feeding of the fiber material are completed. At the same time, the material conveying fan 20 can effectively maintain the pressure in the horizontal injection hole 134, prevent the material in the stirring cavity 12 from flowing in, and ensure the stability of the use of the utility model.

[0031] In another embodiment, the discharge end of the material conveying fan 20 is directly connected to the vertical injection hole 133 to achieve direct injection into the stirring cavity 12, thereby ensuring material feeding efficiency and reducing the risk of blockage.

[0032] The specific operation method of the utility model is as follows: adding the material from the feed port 14 into the stirring cavity 12, and stirring the material by using the stirring device 13. During the stirring process, the material conveying fan 20 is used to draw the fiber material from the first feed pipe 21 into the second feed pipe 22, and after passing through the vertical injection hole 133 and the horizontal injection hole 134, the fiber material is discharged from the release hole 135 into the stirring cavity 12 to achieve mixing; after the stirring is completed, the material is discharged from the discharge port 15 to complete the stirring process.

[0033] The utility model realizes that basalt fiber is continuously delivered to the material during the stirring process, ensuring the uniformity and stability of the mixture. Since the release holes 135 are provided in multiple and evenly distributed on the stirring rod 132, during the stirring process, basalt fiber is simultaneously released to different parts of the material according to needs, thereby improving the uniformity of the distribution of basalt fiber at all levels in the material. Compared with the prior art of directly pouring a large amount of basalt fiber into the material for stirring, the utility model effectively prevents the accumulation of basalt fiber in the material, so that the basalt fiber can be distributed in the material at the same time, thereby reducing the stirring time and effectively reducing the production cost. At the same time, the utility model uses the material conveying fan 20 to effectively maintain the pressure in the horizontal injection hole 134, prevent the material in the stirring cavity 12 from flowing in, and ensure the stability of the use of the utility model.

[0034] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A uniform spraying device for asphalt mixing, comprising an upper shell (10), a lower shell (11) and a material conveying fan (20) located outside the upper shell (10) and the lower shell (11), a stirring cavity (12) is formed between the upper shell (10) and the lower shell (11), a stirring device (13) is rotatably provided in the stirring cavity (12), characterized in that: The stirring device (13) comprises a rod body (131) and a stirring rod (132) detachably connected to the rod body (131); a vertical injection hole (133) is axially provided on the rod body (131), and the vertical injection hole (133) extends downward from the upper end surface of the rod body (131); a horizontal injection hole (134) is axially provided on the stirring rod (132), and the horizontal injection hole (134) is connected to the vertical injection hole (133); a release hole (135) is radially provided on the stirring rod (132), and a plurality of release holes (135) are provided and penetrate the wall of the stirring rod (132), and the release hole (135) is connected to the horizontal injection hole (134) and the stirring cavity (12); and the material conveying fan (20) is connected to the vertical injection hole (133).

2. The uniform spraying device for asphalt mixture according to claim 1, characterized in that: A plurality of stirring rods (132) are provided and evenly arranged on the rod body (131); the axes of the stirring rods (132) are vertically arranged to the axis of the rod body (131); and the length of the stirring rod (132) located at the upper part of the rod body (131) is greater than the length of the stirring rod (132) located at the lower part of the rod body (131).

3. The uniform spraying device for asphalt mixture according to claim 2, characterized in that: The stirring rod (132) is threadedly connected to the rod body (131), and the length of the stirring rod (132) is arranged according to the inner wall profile of the stirring cavity (12).

4. The uniform spraying device for asphalt mixture according to claim 1, characterized in that: The feed end of the material conveying fan (20) is connected to a first conveying pipe (21), and the discharge end of the material conveying fan (20) is connected to a second conveying pipe (22). The second conveying pipe (22) is detachably connected to the end of the rod body (131) and is connected to the vertical injection hole (133).

5. The uniform spraying device for asphalt mixture according to claim 1, characterized in that: One end of the rod body (131) is rotatably connected to the lower shell (11), and the other end of the rod body (131) penetrates the shell of the upper shell (10) and extends outward.

6. The uniform spraying device for asphalt mixture according to claim 5, characterized in that: The rod body (131) is rotatably connected to the upper shell (10); a transmission wheel (16) is provided on the end of the rod body (131) located outside the upper shell (10), and the transmission wheel (16) is externally connected to a motor.

7. The uniform spraying device for asphalt mixture according to claim 1, characterized in that: The diameter of the release hole (135) is smaller than the diameter of the horizontal injection hole (134), and the pressure in the horizontal injection hole (134) is greater than the pressure in the stirring cavity (12).

8. The uniform spraying device for asphalt mixture according to claim 1, characterized in that: The upper shell (10) and the lower shell (11) are semicircular structures with a hollow interior. The upper shell (10) is provided with a loading port (14) at the top, and the lower shell (11) is provided with a unloading port (15) at the bottom.

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