On-line dynamic metering mixing device for multi-component epoxy asphalt

Abstract

The present application relates to the technical field of epoxy asphalt mixing, and discloses an online dynamic metering mixing device for multi-component epoxy asphalt, which comprises a tank assembly, a grading downward pressing mechanism, an upper flow guide mechanism, a turbulence mechanism and a main transmission shaft; the mixing device is driven to rotate by a driving motor, the main transmission shaft drives a helical pushing plate of the upper flow guide mechanism to generate upward pushing force, and the helical pushing plate is attached to the inner wall of the tank assembly to rotate and clean; the main transmission shaft drives a push flow ring plate of the grading downward pressing mechanism to make reciprocating lifting movement through a surface guide groove; when the push flow ring plate is displaced downward, a one-way baffle is closed to form a piston downward pressing flow, and the upward pushing force generates an up-down overturning flow field in the tank; the centrifugal stratification caused by the circumferential vortex is effectively broken, the problems of heavy component sedimentation and light component stratification are solved, and the mixing uniformity of the multi-component fluid is improved.

Description

Technical Field

[0001] This invention relates to the field of epoxy asphalt mixing technology, and more specifically to an online dynamic metering and mixing device for multi-component epoxy asphalt. Background Technology

[0002] Epoxy asphalt is an important paving material widely used in various infrastructure projects. The mixing quality of its multi-component raw materials directly determines the final physical and mechanical properties of the material. In the actual production process, various components with different viscosities and particle states need to be dynamically mixed and reacted in the mixing device. Traditional mixing equipment mostly adopts conventional stirring structures to mix asphalt materials.

[0003] Existing conventional anchor or frame-type mixing impellers mainly generate circumferential rotating tangential flow. When the fluid rotates with the impeller, the overall relative shear and mixing capacity decreases rapidly. Due to the differences in particle size and physicochemical properties of different raw materials in asphalt mixtures, incompletely miscible microgels and "fish-eye" phenomena are easily generated during mixing. Conventional baffles or inclined blades cannot effectively break the flow boundary when the fluid is swirling, making it difficult to generate strong axial tumbling flow inside the tank. This can easily lead to the sedimentation of heavy component particles at the bottom and the stratification of light component raw materials at the top.

[0004] To address the issues of fluid rotation and mixing dead zones during the dynamic mixing process of multi-component asphalt, it is urgent to design a mechanical mixing structure that can break the conventional circumferential vortex. This structure needs to mechanically drive the generation of bidirectional forced convection from top to bottom and bottom to top within the fluid. By improving the spatial distribution characteristics of the mixing flow field, the stratification and sedimentation of materials can be eliminated. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an online dynamic metering and mixing device for multi-component epoxy asphalt. By constructing a tumbling and circulating flow field with bidirectional axial thrust inside the tank, the device aims to eliminate asphalt material settling and stratification, and improve the uniformity of multi-component mixing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides an online dynamic metering and mixing device for multi-component epoxy asphalt, comprising: a tank assembly, wherein a main drive shaft is vertically rotatably disposed at the internal center of the tank assembly; a graded pressing mechanism, wherein the graded pressing mechanism is sleeved on the outside of the main drive shaft; and an upper flow guiding mechanism, wherein the upper flow guiding mechanism is rotatably connected to the outside of the main drive shaft, and a flow disturbance mechanism is connected to the bottom end of the upper flow guiding mechanism.

[0007] Preferably, the upper flow guiding mechanism includes a gear ring fixedly connected to the top wall inside the tank assembly, a linkage bracket fixedly connected to the outer side of the main drive shaft, a driven shaft extending from top to bottom rotatably connected to the end of the linkage bracket, a gear meshing with the gear ring fixedly connected to the top of the driven shaft, and a spiral pusher plate fixedly connected to the outer side of the driven shaft. The upper flow guiding mechanism is mainly used to convert the rotation of the main drive shaft into the revolution and rotation of the pusher component, generating an upward fluid thrust and cleaning the tank wall.

[0008] Preferably, the turbulence-disrupting mechanism includes a turbulence-disrupting ring rotatably connected to the bottom of the tank assembly, a limit ring fixedly connected to the outer edge of the turbulence-disrupting ring, and an array of turbulence-disrupting push plates fixedly connected to the top surface of the turbulence-disrupting ring. The bottom end of the drive shaft is connected to the turbulence-disrupting ring bearing. The turbulence-disrupting mechanism is mainly used to apply an upward pushing force to the fluid at the bottom of the tank.

[0009] Preferably, the outer surface of the main drive shaft is provided with a straight guide groove and a spiral guide groove that are connected end to end. The graded pressing mechanism includes a pusher ring plate sleeved on the outside of the main drive shaft. The inner ring of the pusher ring plate is fixedly connected with a limiting protrusion embedded in the straight guide groove and the spiral guide groove. The graded pressing mechanism is mainly used to convert the rotational motion of the main drive shaft into the linear reciprocating lifting motion of the pusher structure.

[0010] Preferably, a plurality of sliders are fixedly connected to the outer edge of the pusher ring plate, and the graded pressing mechanism further includes a flow divider fixed inside the tank assembly. The inner wall of the flow divider is provided with a vertically extending groove. The slider is slidably connected in the groove, and a spring is connected between the top of the slider and the inner top wall of the groove. The slider, the groove and the spring are mainly used to limit the rotation of the pusher ring plate and provide the elastic force for pressing and resetting.

[0011] Preferably, the cylindrical surface of the flow divider is provided with an array of flow guide holes; the flow guide holes are mainly used to realize radial communication and flow division between the inner fluid and the outer fluid.

[0012] Preferably, the pusher ring plate has a flow hole on its surface and a mounting groove on its bottom surface. A one-way baffle is rotatably connected to the mounting groove via a hinge shaft. A torsion spring is sleeved on the outside of the hinge shaft. A hinge plate is fixedly connected to one side of the one-way baffle. The one-way baffle is connected to the hinge shaft via the hinge plate. The hinge plate is mainly used to change the opening and closing state of the flow hole to form a piston effect when the pusher ring plate is raised and lowered.

[0013] Preferably, the tank assembly includes a tank and a top cover covering the top of the tank, and a drive motor that is connected to the main drive shaft is fixedly installed on the top cover; the drive motor is mainly used to provide the drive source inside the device.

[0014] Preferably, a discharge port is provided at the center of the bottom of the tank, and a discharge pipe is connected below the discharge port. A support truss for supporting the bottom end of the main drive shaft is fixedly connected inside the discharge port; the support truss is mainly used to stably support the main drive shaft.

[0015] Preferably, a feed pipe is fixedly connected to the top of the top cover, and a digital monitoring unit is installed on the outer wall of the tank; the digital monitoring unit is mainly used for real-time monitoring of mixing parameters.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. This invention drives the main drive shaft to rotate via a drive motor. The main drive shaft drives the spiral pusher plate of the upper guide mechanism to revolve and rotate, providing a strong upward pushing force to the outer layer fluid inside the tank. At the same time, the outer edge of the spiral pusher plate continuously adheres to the inside of the tank to dynamically scrape the wall, forcibly stripping the microgels and stagnant materials attached to the tank wall to the mainstream area to participate in mixing.

[0017] 2. This invention utilizes the geometric fit between the straight guide groove and the spiral guide groove connected end to end on the outer side of the main drive shaft to force the central push-flow ring plate to overcome the spring force and perform reciprocating vertical lifting and lowering motion. When the push-flow ring plate is reset and displaced downward, the one-way baffle at its bottom automatically closes due to fluid resistance, transforming the push-flow ring plate into an integral piston structure, generating a huge downward pressure on the inner fluid. This downward pressure flow and the upward push flow on the outside form a spatial opposition, forcibly establishing a continuous axial circulation inside the tank, completely breaking the phenomenon of fluid rotation caused by traditional stirring.

[0018] 3. The present invention, through the flow guide hole structure on the flow divider, enables the pressurized fluid in the inner layer to be squeezed outward in a radial manner at different height levels and flow into the working area of ​​the upper flow guide mechanism, forming a radial graded shearing and mixing interaction. This spatially cuts off the path of light components floating and heavy components sinking, ensuring extremely high mixing uniformity of epoxy asphalt multiphase components. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the tank in this invention; Figure 4 This is a cross-sectional view of the structure at the turbulence ring in this invention; Figure 5 This is a schematic diagram of the structure at the main drive shaft in this invention; Figure 6This is a schematic diagram of the upper flow guiding mechanism in this invention; Figure 7 This is a cross-sectional view of the structure at the graded pressing mechanism in this invention; Figure 8 This is a cross-sectional view of the structure at the flow divider in this invention; Figure 9 This is a schematic diagram of the structure at the flow-pushing ring plate in this invention; Figure 10 This is a bottom view of the structure at the flow-pushing ring plate in this invention; Figure 11 This is a schematic diagram of the mounting groove structure in this invention; Figure 12 This is a schematic diagram of the unidirectional baffle structure in this invention.

[0020] Figure label: 100. Tank assembly; 200. Staged pressure mechanism; 300. Upper flow guide mechanism; 400. Flow disturbance mechanism; 500. Main drive shaft; 101. Tank body; 102. Discharge pipe; 103. Digital monitoring unit; 104. Top cover; 105. Drive motor; 106. Feed pipe; 107. Discharge port; 108. Support truss; 201. Linear guide groove; 202. Spiral guide groove; 203. Diverter baffle; 204. Flow ring plate; 205. Flow guide hole; 206. Slide groove; 207. Limiting protrusion; 208. Spring; 209. Slider; 210. One-way baffle; 211. Mounting groove; 212. Torsion spring; 213. Hinge plate; 214. Hinge shaft; 301. Gear ring; 302. Linkage bracket; 303. Gear; 304. Spiral pusher plate; 305. Drive shaft; 401. Baffle ring; 402. Limiting ring; 403. Baffle pusher. Detailed Implementation

[0021] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof.

[0022] Example 1 like Figures 1 to 12As shown, this embodiment provides an online dynamic metering and mixing device for multi-component epoxy asphalt, a tank assembly 100, the tank assembly 100 including a tank 101 and a top cover 104 covering the top of the tank 101, a drive motor 105 fixedly installed above the top cover 104 and connected to the main drive shaft 500, a discharge port 107 is provided at the center of the bottom of the tank 101, a discharge pipe 102 is connected below the discharge port 107, a support truss 108 for supporting the bottom of the main drive shaft 500 is fixedly connected inside the discharge port 107, a feed pipe 106 is fixedly connected to the top of the top cover 104, a digital monitoring unit 103 is installed on the outer wall of the tank 101, and the main drive shaft 500 is vertically rotatably arranged at the center of the tank assembly 100; It should be noted that the digital monitoring unit 103 is any kind of digital monitoring device in the prior art, and its working principle and technical characteristics are consistent with the prior art, so they will not be described in detail here.

[0023] A graded pressing mechanism 200 is sleeved on the outside of the main drive shaft 500. The outer surface of the main drive shaft 500 is provided with a straight guide groove 201 and a spiral guide groove 202 connected end to end. The graded pressing mechanism 200 includes a push flow ring plate 204 sleeved on the outside of the main drive shaft 500. The inner ring of the push flow ring plate 204 is fixedly connected with a limiting protrusion 207 embedded in the straight guide groove 201 and the spiral guide groove 202. The outer edge of the push ring plate 204 is fixedly connected with a plurality of sliders 209. The graded pressing mechanism 200 also includes a flow divider 203 fixed inside the tank assembly 100. The inner wall of the flow divider 203 is provided with a vertically extending slide groove 206. The sliders 209 are slidably connected in the slide groove 206. A spring 208 is connected between the top of the slider 209 and the inner top wall of the slide groove 206. The cylindrical surface of the flow divider 203 is provided with an array of guide holes 205. The push-flow ring plate 204 has flow holes on its surface and a mounting groove 211 on its bottom surface. A one-way baffle 210 is rotatably connected to the mounting groove 211 via a hinge shaft 214. A torsion spring 212 is sleeved on the outside of the hinge shaft 214. A hinge plate 213 is fixedly connected to one side of the one-way baffle 210. The one-way baffle 210 is connected to the hinge shaft 214 via the hinge plate 213. An upper guide mechanism 300 is rotatably connected to the outside of the main drive shaft 500. The upper guide mechanism 300 includes a gear ring 301 fixedly connected to the inner top wall of the tank assembly 100. A linkage bracket 302 is fixedly connected to the outside of the main drive shaft 500. A drive shaft 305 extending from top to bottom is rotatably connected to the end of the linkage bracket 302. A gear 303 meshing with the gear ring 301 is fixedly connected to the top of the drive shaft 305. A spiral pusher plate 304 is fixedly connected to the outside of the drive shaft 305. The bottom end of the upper flow guiding mechanism 300 is connected to a flow disturbance mechanism 400. The flow disturbance mechanism 400 includes a flow disturbance ring 401 rotatably connected to the bottom of the tank assembly 100. A limit ring 402 is fixedly connected to the outer edge of the flow disturbance ring 401. An array of flow disturbance push plates 403 are fixedly connected to the top surface of the flow disturbance ring 401. The bottom end of the drive shaft 305 is connected to the flow disturbance ring 401 by a bearing.

[0024] The mixing device proposed in this embodiment is used as follows: the drive motor 105 operates, and its output end drives the main drive shaft 500 to rotate; the main drive shaft 500 drives the linkage bracket 302 fixed to its outer wall to rotate; the linkage bracket 302 drives the driven shaft 305 at its end to revolve around the main drive shaft 500; when the driven shaft 305 revolves, the gear 303 at its top end rolls and meshes with the toothed ring 301 fixed to the top of the tank 101; this meshing action forces the gear 303 to rotate, thereby driving the driven shaft 305 to rotate; the rotation of the driven shaft 305 synchronously drives the outer spiral pusher plate 304 and the bottom turbulence ring 401 to rotate.

[0025] The rotation of the spiral pusher plate 304 applies an upward axial thrust to the asphalt fluid in the outer area of ​​the tank 101; at the same time, the outer edge of the spiral pusher plate 304 slides against the inner wall of the tank 101, scraping and cleaning the gel material attached to the inner wall; the bottom turbulence ring 401 rotates, and the turbulence pusher plates 403 arranged on the surface array apply an upward pushing force to the fluid at the bottom edge of the tank 101; the above linkage structure realizes the forced lifting and mixing of the outer asphalt material from bottom to top.

[0026] When the main drive shaft 500 rotates, the spiral guide groove 202 and the straight guide groove 201 on the outer side of the main drive shaft 500 rotate accordingly; the inner wall of the spiral guide groove 202 presses the limiting protrusion 207 upward; the push ring plate 204 is subjected to force and slides upward along the slide groove 206 on the inner wall of the diversion baffle 203, and the slider 209 synchronously compresses the spring 208 at the top; During this upward movement, the fluid above the pusher ring plate 204 passes through the flow hole, pushing the one-way baffle 210 to flip downward around the hinge shaft 214 and open, and the fluid falls below the pusher ring plate 204. When the limiting protrusion 207 slides into the area of ​​the linear guide groove 201, the push flow ring plate 204 loses its upward lifting force; Under the restoring force of the spring 208, the pusher ring plate 204 moves rapidly downward in a straight line along the straight guide groove 201; at the moment of downward displacement, the fluid below the pusher ring plate 204 generates an upward reaction force, pushing the one-way baffle 210 upward, so that it fits tightly against the bottom of the pusher ring plate 204.

[0027] The closed one-way baffle 210 makes the thrust ring plate 204 form a complete piston surface; the thrust ring plate 204 moves downward to apply downward forced extrusion force to the fluid inside the flow divider 203; the pressurized high-pressure fluid flows downward and is ejected outward at high speed through the guide hole 205 on the side wall of the flow divider 203; the above structure realizes the forced delivery of the inner fluid from top to bottom and generates radial graded shearing and mixing at different heights.

[0028] The upper flow guiding mechanism 300 generates an upward continuous flow around the tank 101; the staged pressure mechanism 200 generates a downward pulsating pressure flow and an outward radial jet at the center of the tank 101.

[0029] The flow fields of the two sets of mechanisms intersect inside the tank 101, creating a spatial convection layer that rotates up and down and circulates internally and externally. This operation mode breaks the single horizontal vortex generated by conventional agitators, eliminates the mixing dead zone, and solves the problem of sedimentation of heavy components and stratification of light components in epoxy asphalt.

[0030] It should be noted that the inner wall of the tank 101, the spiral pusher plate 304 and the outer layer of the drive shaft 305, the flow divider 203 and the inner and outer layers of the pusher ring plate 204 are all coated with polytetrafluoroethylene (Teflon). The coating of polytetrafluoroethylene (Teflon) reduces the occurrence of asphalt fluid residue on the wall.

[0031] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An online dynamic metering and mixing device for multi-component epoxy asphalt, characterized in that, include: Tank assembly (100), wherein a main drive shaft (500) is vertically rotatably mounted at the internal center position of the tank assembly (100). A graded pressing mechanism (200) is sleeved on the outside of the main drive shaft (500); An upper flow guide mechanism (300) is rotatably connected to the outside of the main drive shaft (500), and a flow disturbance mechanism (400) is connected to the bottom end of the upper flow guide mechanism (300). The outer surface of the main drive shaft (500) is provided with a straight guide groove (201) and a spiral guide groove (202) connected end to end. The graded pressing mechanism (200) includes a pusher ring plate (204) sleeved on the outside of the main drive shaft (500). The inner ring of the pusher ring plate (204) is fixedly connected with a limiting protrusion (207) embedded in the straight guide groove (201) and the spiral guide groove (202). The upper guide mechanism (300) includes a gear ring (301) fixedly connected to the inner top wall of the tank assembly (100), a linkage bracket (302) fixedly connected to the outer side of the main drive shaft (500), a driven shaft (305) extending from top to bottom rotatably connected to the end of the linkage bracket (302), a gear (303) meshing with the gear ring (301) fixedly connected to the top of the driven shaft (305), and a spiral pusher plate (304) fixedly connected to the outer side of the driven shaft (305). The outer edge of the push ring plate (204) is fixedly connected with a number of sliders (209). The graded pressing mechanism (200) also includes a diversion baffle (203) fixed inside the tank assembly (100). The inner wall of the diversion baffle (203) is provided with a vertically extending slide groove (206). The slider (209) is slidably connected in the slide groove (206). A spring (208) is connected between the top of the slider (209) and the inner top wall of the slide groove (206). The flow divider (203) has an array of flow guide holes (205) on its cylindrical surface; the flow pusher ring plate (204) has flow holes on its plate surface and a mounting groove (211) on its bottom surface. A one-way baffle (210) is rotatably connected to the mounting groove (211) via a hinge shaft (214). A torsion spring (212) is sleeved on the outside of the hinge shaft (214). A hinge plate (213) is fixedly connected to one side of the one-way baffle (210). The one-way baffle (210) is connected to the hinge shaft (214) via the hinge plate (213).

2. The online dynamic metering and mixing device for multi-component epoxy asphalt according to claim 1, characterized in that, The turbulence mechanism (400) includes a turbulence ring (401) rotatably connected to the bottom of the tank assembly (100), a limit ring (402) fixedly connected to the outer edge of the turbulence ring (401), an array of turbulence push plates (403) fixedly connected to the top surface of the turbulence ring (401), and the bottom end of the drive shaft (305) is connected to the turbulence ring (401) by a bearing.

3. The online dynamic metering and mixing device for multi-component epoxy asphalt according to claim 1, characterized in that, The tank assembly (100) includes a tank (101) and a top cover (104) covering the top of the tank (101), and a drive motor (105) that is connected to the main drive shaft (500) is fixedly installed on the top cover (104).

4. The online dynamic metering and mixing device for multi-component epoxy asphalt according to claim 3, characterized in that, The tank (101) has a discharge port (107) at the center of the bottom. A discharge pipe (102) is connected below the discharge port (107). A support truss (108) for supporting the bottom of the main drive shaft (500) is fixedly connected inside the discharge port (107).

5. The online dynamic metering and mixing device for multi-component epoxy asphalt according to claim 3, characterized in that, The top of the top cover (104) is fixedly connected to the feed pipe (106), and the outer side wall of the tank (101) is equipped with a digital monitoring unit (103).

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