A warm mix recycled asphalt mixture mixing plant

Abstract

The utility model provides a kind of warm mixing recycled asphalt mixture stirring equipment, it is related to bitumen recycling equipment technical field, including support base, mixing tank, horizontal new aggregate heating tank, grading heating type recycled material heating tank, hot air heating tank, flue gas purification filter;New aggregate is heated using horizontal new aggregate heating tank, and the flue gas generated by heating is introduced into the flue gas output end of hot air heating tank, using flue gas as hot air to heat the recycled asphalt pavement material after first heating in hot air heating tank inside to secondary heating, waste heat in flue gas is recycled, reduce energy waste, new and old material in horizontal new aggregate heating tank and grading heating type recycled material heating tank are heated respectively and supplied into mixing tank to mix, avoid the problem of new and old material heating imbalance caused by different heating temperature requirements of new and old material, so that the quality of mixture is more stable.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt recycling equipment, and in particular to a warm-mix recycled asphalt mixture mixing equipment. Background Technology

[0002] The descriptions in this section provide only background information relevant to this disclosure and do not constitute prior art.

[0003] Asphalt mixture recycling equipment is a device that allows asphalt mixtures that do not meet usage requirements, i.e. road waste, to be reused after being processed through various measures.

[0004] Existing warm-mix recycling technology may have problems such as uneven heating of new and old materials in the equipment, resulting in insufficient utilization of heat energy, unstable quality of the mixture, and energy waste. Utility Model Content

[0005] The purpose of this utility model is to provide a warm-mix recycled asphalt mixture mixing equipment, which has the advantages of reusing the waste heat in the flue gas to perform secondary heating of the recycled asphalt pavement material, and feeding the heated new and old materials into the mixing tank for mixing. This avoids the problem of uneven heating of new and old materials caused by different heating temperatures required for new and old materials. It solves the technical problem that existing warm-mix recycling technology may have uneven heating of new and old materials and insufficient utilization of heat energy, resulting in unstable mixture quality and energy waste.

[0006] This utility model provides a warm-mix recycled asphalt mixture mixing device, comprising: A support base, on the upper end of which a mixing tank is fixedly mounted; A horizontal new aggregate heating tank is fixedly installed on the right side of the top surface of the mixing tank, and its discharge end is fixedly connected to the top surface of the mixing tank. A graded heating type recycled material heating tank is fixedly installed on the left side of the top surface of the mixing tank, and its discharge end is fixedly connected to the top surface of the mixing tank. Below the graded heating type recycled material heating tank is a hot air heating tank, and its hot air input end is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank. A flue gas purification filter is fixedly connected to the middle of the top surface of the mixing tank and the flue gas output end of the hot air heating tank.

[0007] As a further optimization, in order to perform staged heating of the recycled asphalt pavement material to ensure that the temperature of the recycled asphalt pavement material is stably raised to the target warm-mix temperature and to avoid secondary damage to the recycled aged asphalt caused by rapid heating, the staged heating type recycled material heating tank includes: The lower end of the heat transfer oil heating tank is fixedly connected to the top surface of the hot air heating tank; Support columns are fixedly installed between the left and right sides of the bottom surface of the heat transfer oil heating tank and the top surface of the hot air heating tank. Support columns are fixedly installed between the left and right sides of the bottom surface of the hot air heating tank and the top surface of the mixing tank.

[0008] As a further optimization, in order to utilize the internal circulation of heated heat transfer oil to heat the recycled asphalt pavement material in the first circular tank, and to ensure heating uniformity and avoid localized overheating in conjunction with the first stirring component, the heat transfer oil heating tank includes: The first round tank has a first discharge hopper fixedly connected to its lower end, and the lower end of the first discharge hopper is fixedly connected to a first discharge pipe with a valve. The outer wall of the first cylindrical tank is fitted with a jacket, through which heated heat transfer oil is circulated. A first stirring component is fixedly mounted on the top surface of the first cylindrical tank, and its lower end extends to the lower end of the inner cavity of the first discharge hopper. The first feed pipe is fixedly connected to the edge of the top surface of the first cylindrical tank.

[0009] As a further optimization, in order to stir the heated recycled asphalt pavement material in the first cylindrical tank, ensure uniform heating, and avoid localized overheating, the first stirring component includes: The first drive motor is fixedly mounted on the middle of the top surface of the first cylindrical tank; The lower end of the first drive motor output is fixedly connected to a first round rod through the top surface of the first round tank, and the lower end of the first round rod extends to the lower end of the inner cavity of the first discharge hopper. The outer wall of the first round rod is uniformly fitted with the first stirring blades in the inner cavity of the first discharge hopper, and the size of the first stirring blades decreases from top to bottom. The outer wall of the first round rod is uniformly and fixedly fitted with the second stirring blade in the inner cavity of the first round tank.

[0010] As a further optimization, in order to utilize the waste heat from the flue gas of the recovered horizontal new aggregate heating tank to heat the second circular tank, and to provide auxiliary heating and insulation for the recovered material after heating in the heat transfer oil heating tank, the hot air heating tank includes: The second round tank has a second discharge hopper fixedly connected to its lower end, and the lower end of the second discharge hopper is fixedly connected to a second discharge pipe with a valve. The outer wall of the second cylindrical tank is spirally wound with a heat-conducting pipe, the upper end of which is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank. The lower end of the heat pipe is fixedly connected to the flue gas purification filter; The top surface of the second cylindrical tank is fixedly connected to the lower end of the heat transfer oil heating tank.

[0011] As a further optimization, in order to heat the new aggregate with a burner, the flue gas is introduced into the hot air input end of the hot air heating tank through a flue gas duct to recover and utilize the waste heat in the flue gas. The horizontal new aggregate heating tank includes: The first horizontal tank body has support plates fixedly installed on the left and right sides of its bottom surface between the top surface of the mixing tank and the bottom surface of the tank body. A first discharge pipe is fixedly connected between the bottom surface of the first horizontal tank and the top surface of the mixing tank; A burner is fixedly connected to the middle of the side wall of the first horizontal tank, and a connecting block is fixedly assembled between the side wall and the outer wall of the first horizontal tank. A second feed pipe is fixedly connected to the right side of the top surface of the first horizontal tank. An induced draft fan is fixedly connected to the left side of the top surface of the first horizontal tank, and a flue gas duct is fixedly connected to its output end. The end of the flue gas duct is fixedly connected to the hot air input end of the hot air heating tank; A valve is fixedly mounted on the flue gas duct.

[0012] As a further optimization, in order to stir and mix the recycled materials, new aggregates, and warm mixing agent entering the inner cavity of the mixing tank, the mixing tank includes: The second horizontal tank has a second discharge pipe fixedly connected to the middle of its bottom surface; A second stirring component is fixedly assembled in the middle of the right wall of the second horizontal tank, and its left end extends to the left side of the inner cavity of the second horizontal tank. The outer wall of the second horizontal tank is fixedly fitted with a cavity sleeve, which is filled with a layer of rock wool. The top surface of the second horizontal tank is fixedly connected to the lower discharge end of the graded heating type recycled material heating tank, the lower discharge end of the horizontal new aggregate heating tank, and the lower end of the flue gas purification filter; A second feed pipe is fixedly connected to the edge of the top surface of the second horizontal tank.

[0013] As a further optimization, in order to stir and mix the recycled materials, new aggregates, and warm mix agent entering the mixing tank cavity, the second stirring component includes: The second drive motor is fixedly mounted on the middle of the right wall of the second horizontal tank. The output end of the second drive motor is fixedly connected to a second round rod through the right wall of the second horizontal tank, and the left end of the second round rod is rotatably connected to the left side of the inner wall of the second horizontal tank. The second round rod has stirring plates uniformly fixedly mounted on its outer walls on both the upper and lower sides along its length, and the upper and lower stirring plates are asymmetrically distributed. The outer wall of the stirring plate is uniformly provided with guide holes.

[0014] As a further optimization, in order to filter and purify the flue gas discharged from the mixing tank and the hot air heating tank, the flue gas purification filter includes: The lower end of the pipe is fixedly connected to the top surface of the second horizontal tank. A limit ring is fixedly assembled at the lower end of the inner wall of the tube. An activated carbon filter element is inserted into the tube, with its lower end abutting against the upper end of the limiting ring.

[0015] As a further optimization, in order to provide stable support for the device, the support base includes: The base plate has legs fixedly mounted on both the left and right sides of its top surface. The bottom of the mixing tank is fixedly connected to the upper ends of the two side legs on both sides.

[0016] This utility model provides an improved warm-mix recycled asphalt mixture mixing equipment, which has the following improvements and advantages compared with the prior art: A horizontal new aggregate heating tank is used to heat the new aggregate. The flue gas generated during heating is introduced into the flue gas output end of the hot air heating tank. The flue gas is used as hot air to perform secondary heating on the recycled asphalt pavement material that has undergone primary heating inside the hot air heating tank. The residual heat in the flue gas is reused to reduce energy waste. The upper and lower stage heating ensures that the temperature of the recycled asphalt pavement material is stably raised to the target temperature mixing temperature, avoiding secondary damage to the recycled aged asphalt caused by rapid heating. After heating, the new and old materials in the horizontal new aggregate heating tank and the staged heating recycled material heating tank are fed into the mixing tank separately for mixing. This avoids the problem of uneven heating of new and old materials due to different heating temperatures required by the new and old materials, resulting in a more stable mixture quality. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the graded heating type recycling material heating tank of this utility model; Figure 3 This is a schematic cross-sectional view of the structure of the heat transfer oil heating tank of this utility model; Figure 4 This is a schematic diagram of the structure of the new horizontal aggregate heating tank of this utility model; Figure 5This is a schematic cross-sectional view of the mixing tank structure of this utility model; Figure 6 This is a schematic cross-sectional view of the flue gas purification filter of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1-Support base, 11-Base plate, 12-Support leg, 2-Mixing tank, 21-Second horizontal tank body, 22-Second discharge pipe, 23-Second feed pipe, 24-Cavity sleeve, 25-Rock wool layer, 26-Second agitator, 261-Second drive motor, 262-Second round rod, 263-Agitator plate, 264-Guide hole, 3-Horizontal new aggregate heating tank, 31-Support plate, 32-First horizontal tank body, 33-First discharge pipe, 34-Burner, 35-Connecting block, 36-Exhaust fan, 37-Flue gas duct, 38-Valve, 4-Graded heating type recycled material Heating tank, 41-Hot air heating tank, 411-Second round tank, 412-Heat conduction pipe, 413-Second discharge hopper, 414-Second discharge pipe with valve, 42-Heat conduction oil heating tank, 421-First round tank, 422-Jacket, 423-First discharge pipe with valve, 424-First feed pipe, 425-First discharge hopper, 426-First stirring component, 4261-First drive motor, 4162-First round rod, 4263-First stirring blade, 4264-Second stirring blade, 5-Flue gas purification filter, 51-Pipe body, 52-Limiting ring, 53-Activated carbon filter element. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0022] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-6 This utility model provides a technical solution: a warm-mix recycled asphalt mixture mixing device, comprising: Support base 1, with mixing tank 2 fixedly mounted on its upper end; A horizontal new aggregate heating tank 3 is fixedly installed on the right side of the top surface of the mixing tank 2, and its discharge end is fixedly connected to the top surface of the mixing tank 2. A graded heating type recycled material heating tank 4 is fixedly installed on the left side of the top surface of the mixing tank 2, and its discharge end is fixedly connected to the top surface of the mixing tank 2. Below the graded heating type recycled material heating tank 4 is a hot air heating tank 41, whose hot air input end is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank 3; A flue gas purification filter 5 is fixedly connected to the middle of the top surface of the mixing tank 2 and the flue gas output end of the hot air heating tank 41.

[0024] Specifically in this embodiment, the support base 1 supports the mixing tank 2, and the flue gas purification filter 5 filters and purifies the flue gas discharged from the middle of the top surface of the mixing tank 2 and the flue gas output end of the hot air heating tank 41. Furthermore, a horizontal new aggregate heating tank 3 is used to heat the new aggregate. The flue gas generated by heating is introduced into the flue gas output end of the hot air heating tank 41. The flue gas is used as hot air to perform secondary heating on the recycled asphalt pavement material that has passed through the first stage of heating inside the hot air heating tank 41. The residual heat in the flue gas is reused to reduce energy waste. The upper and lower stage heating makes the temperature of the recycled asphalt pavement material stably raised to the target warm mix temperature, avoiding secondary damage to the recycled aged asphalt caused by rapid heating. More specifically, the new and old materials in the horizontal new aggregate heating tank 3 and the graded heating type recycled material heating tank 4 are heated and then fed into the mixing tank 2 for mixing, so as to avoid the problem of uneven heating of new and old materials due to different heating temperatures required for new and old materials, and make the quality of the mixture more stable. Understandably, the flue gas purification filter 5 filters and purifies the flue gas discharged from the mixing tank 2 and the hot air heating tank 41.

[0025] In some embodiments, the staged heating type recycling material heating tank 4 includes: The lower end of the heat transfer oil heating tank 42 is fixedly connected to the top surface of the hot air heating tank 41. Support columns are fixedly installed between the bottom left and right sides of the heat transfer oil heating tank 42 and the top surface of the hot air heating tank 41. Support columns are fixedly installed on the left and right sides of the bottom surface of the hot air heating tank 41 and the top surface of the mixing tank 2.

[0026] Specifically in this embodiment, the heat transfer oil heating tank 42 and the hot air heating tank 41 perform upper and lower grade processing on the recycled asphalt pavement material. Furthermore, the upper and lower stage heating process ensures that the temperature of the recycled asphalt pavement material is steadily raised to the target warm mix temperature, avoiding secondary damage to the recycled aged asphalt caused by rapid heating. More specifically, the installation of the support pillars improves the stability of the installation of the heat transfer oil heating tank 42 and the hot air heating tank 41.

[0027] In some embodiments, the heat transfer oil heating tank 42 includes: The first round tank 421 has a first discharge hopper 425 fixedly connected to its lower end, and the first discharge hopper 425 has a first discharge pipe 423 with a valve fixedly connected to its lower end. The outer wall of the first round tank 421 is fitted with a jacket 422, through which heated heat transfer oil is circulated. The first stirring component 426 is fixedly assembled on the top surface of the first round tank 421, and its lower end extends to the lower end of the inner cavity of the first discharge hopper 425. The first feed pipe 424 is fixedly connected to the edge of the top surface of the first round tank 421; The first stirring component 426 includes: The first drive motor 4261 is fixedly mounted on the middle of the top surface of the first cylindrical tank 421; The lower end of the first drive motor 4261 is fixedly connected to the top surface of the first round tank 421, and the lower end of the first round rod 4262 extends to the lower end of the inner cavity of the first discharge hopper 425. The outer wall of the first round rod 4262 is uniformly and fixedly equipped with the first stirring blade 4263 in the inner cavity of the first discharge hopper 425, and the size of the first stirring blade 4263 decreases from top to bottom. The outer wall of the first round rod 4262 is uniformly and fixedly fitted with the second stirring blade 4264 in the inner cavity of the first round tank 421.

[0028] Specifically, in this embodiment, heated heat-conducting oil is circulated in the jacket 422 to heat the recycled asphalt pavement material in the first round tank 421, and the first stirring component 426 is used to ensure the uniformity of heating and avoid local overheating. Furthermore, the first drive motor 4261 is connected to an external power source to drive the first round rod 4262, the first stirring blade 4263 and the second stirring blade 4264 to rotate, thereby stirring the recycled asphalt pavement material being heated in the first round tank 421 and the first discharge hopper 425. More specifically, the size of the first mixing blade 4263 decreases from top to bottom to match the shape of the inner cavity of the first discharge hopper 425, and the recycled asphalt pavement material entering the first discharge hopper 425 is also fully mixed.

[0029] In some embodiments, the hot air heating tank 41 includes: The second round tank 411 has a second discharge hopper 413 fixedly connected to its lower end, and the lower end of the second discharge hopper 413 is fixedly connected to a second discharge pipe 414 with a valve. The outer wall of the second round tank 411 is spirally wound with a heat-conducting pipe 412, the upper end of which is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank 3. The lower end of the heat pipe 412 is fixedly connected to the flue gas purification filter 5; The top surface of the second round tank 411 is fixedly connected to the lower end of the discharge of the heat transfer oil heating tank 42.

[0030] Specifically in this embodiment, flue gas introduced by wind is introduced into the heat pipe 412, and the heat carried by the flue gas is transferred to the second round tank 411 through the spirally wound heat pipe 412 to reheat the recycled asphalt pavement material in the second round tank 411. Furthermore, the flue gas discharged through the lower end of the heat pipe 412 is filtered and purified by the flue gas purification filter 5 before being discharged. More specifically, a valved discharge pipe is a discharge pipe equipped with a valve, which is opened to discharge material.

[0031] In some embodiments, the horizontal new aggregate heating tank 3 includes: The first horizontal tank 32 has support plates 31 fixedly installed on the left and right sides of its bottom surface between the top surface of the mixing tank 2 and the top surface of the mixing tank 2. A first discharge pipe 33 is fixedly connected between the bottom surface of the first horizontal tank 32 and the top surface of the mixing tank 2; A burner 34 is fixedly connected to the middle of the side wall of the first horizontal tank 32, and a connecting block 35 is fixedly assembled between the side wall and the outer wall of the first horizontal tank 32. The second feed pipe is fixedly connected to the right side of the top surface of the first horizontal tank body 32; The first horizontal tank 32 has an induced draft fan 36 fixedly connected to the left side of its top surface, and its output end is fixedly connected to a flue gas duct 37. The end of the flue gas duct 37 is fixedly connected to the hot air input end of the hot air heating tank 41; A valve 38 is fixedly mounted on the flue gas duct 37.

[0032] Specifically, in this embodiment, the burner 34 is a prior art technology, which introduces fuel to heat the new aggregate in the first horizontal tank 32; Furthermore, the induced draft fan 36 is connected to an external power source. The flue gas generated by heating the new aggregate is drawn out by the induced draft fan 36 and discharged into the flue gas duct 37. The flue gas duct 37 guides the flue gas into the heat conduction pipe 412 of the hot air heating tank 41. More specifically, valve 38 is used to control the opening and closing of flue gas duct 37.

[0033] In some embodiments, the mixing tank 2 includes: The second horizontal tank 21 has a second discharge pipe 22 fixedly connected to the middle of its bottom surface; The second stirring component 26 is fixedly assembled in the middle of the right wall of the second horizontal tank 21, and its left end extends to the left side of the inner cavity of the second horizontal tank 21. The outer wall of the second horizontal tank 21 is fixedly fitted with a cavity sleeve 24, which is filled with a rock wool layer 25. The top surface of the second horizontal tank 21 is fixedly connected to the lower discharge end of the graded heating type recycled material heating tank 4, the lower discharge end of the horizontal new aggregate heating tank 3, and the lower end of the flue gas purification filter 5. The second horizontal tank 21 is fixedly connected to the edge of the top surface of the second feed pipe 23; The second stirring component 26 includes: The second drive motor 261 is fixedly mounted on the middle of the right wall of the second horizontal tank 21; The output end of the second drive motor 261 passes through the right wall of the second horizontal tank 21 and is fixedly connected to the second round rod 262, and the left end of the second round rod 262 is rotatably connected to the left side of the inner wall of the second horizontal tank 21. The upper and lower sides of the outer wall of the second round rod 262 are uniformly fixed with stirring plates 263 along the length direction, and the upper and lower stirring plates 263 are asymmetrically distributed. The outer wall of the stirring plate 263 is evenly provided with guide holes 264.

[0034] Specifically, in this embodiment, the second horizontal tank 21 is used to store the heated recycled asphalt pavement material, new aggregate, and warm mix agent; Furthermore, the second mixing component 26 is used to mix the heated recycled asphalt pavement material, new aggregate and warm mix agent contained in the second horizontal tank 21. More specifically, the second feed pipe 23 is used to add warm mixing agent into the second horizontal tank 21, and the cavity sleeve 24 is filled with rock wool layer 25 to play a heat preservation role and reduce the loss of material temperature in the second horizontal tank 21. Understandably, the second drive motor 261 is connected to an external power source, which drives the second rod 262 and the stirring plate 263 to rotate. The asymmetrical arrangement of the stirring plates 263 on the upper and lower sides and the arrangement of the guide holes 264 improve the uniformity of stirring of the material inside the second horizontal tank 21.

[0035] In some embodiments, the flue gas purification filter 5 includes: The lower end of the pipe body 51 is fixedly connected to the top surface of the second horizontal tank body 21; A limit ring 52 is fixedly assembled at the lower end of the inner wall of the tube body 51; An activated carbon filter element 53 is inserted into the tube body 51, and its lower end abuts against the upper end of the limiting ring 52.

[0036] Specifically, in this embodiment, the activated carbon filter element 53 is used to filter out impurities and harmful substances in the flue gas; Furthermore, the activated carbon filter element 53 can be pulled out from the upper end of the inner cavity of the tube 51 for easy replacement.

[0037] In some embodiments, the support base 1 includes: The base plate 11 has legs 12 fixedly mounted on both the left and right sides of its top surface. The bottom left and right sides of the mixing tank 2 are fixedly connected to the upper ends of the two side support legs 12. The two side support legs 12 and the bottom plate 11 form a bracket to support the mixing tank 2 and provide stable support for the device.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A warm-mix recycled asphalt mixture mixing equipment, characterized in that, include: Support base (1), with a mixing tank (2) fixedly mounted on its upper end; A horizontal new aggregate heating tank (3) is fixedly installed on the right side of the top surface of the mixing tank (2), and its discharge end is fixedly connected to the top surface of the mixing tank (2). The mixing tank (2) is fixedly equipped with a graded heating type recycled material heating tank (4) on the left side of the top surface, and its discharge end is fixedly connected to the top surface of the mixing tank (2); Below the graded heating type recycled material heating tank (4) is a hot air heating tank (41), whose hot air input end is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank (3); The mixing tank (2) and the flue gas output end of the hot air heating tank (41) are fixedly connected to a flue gas purification filter (5).

2. The warm-mix recycled asphalt mixing equipment according to claim 1, characterized in that, The graded heating type recycling material heating tank (4) includes: The heat transfer oil heating tank (42) has its lower outlet end fixedly connected to the top surface of the hot air heating tank (41); Support columns are fixedly mounted between the bottom left and right sides of the heat transfer oil heating tank (42) and the top surface of the hot air heating tank (41); The hot air heating tank (41) is fixedly fitted with support columns on the left and right sides of its bottom surface and the top surface of the mixing tank (2); The hot air heating tank (41) includes: The second round tank (411) is fixedly connected to the lower end of the second discharge hopper (413), and the lower end of the second discharge hopper (413) is fixedly connected to the second discharge pipe with valve (414). The outer wall of the second round tank (411) is spirally wound with a heat-conducting pipe (412), the upper end of which is fixedly connected to the flue gas output end of the horizontal new aggregate heating tank (3); The lower end of the heat pipe (412) is fixedly connected to the flue gas purification filter (5); The top surface of the second round tank (411) is fixedly connected to the lower end of the discharge of the heat transfer oil heating tank (42).

3. The warm-mix recycled asphalt mixing equipment according to claim 2, characterized in that, The heat transfer oil heating tank (42) includes: The first round tank (421) is fixedly connected to the lower end of the first discharge hopper (425), and the lower end of the first discharge hopper (425) is fixedly connected to the first discharge pipe with valve (423). The outer wall of the first round tank (421) is fitted with a jacket (422), and heated heat transfer oil is circulated inside it; The first cylindrical tank (421) is fixedly equipped with a first stirring component (426) on its top surface, and its lower end extends to the lower end of the inner cavity of the first discharge hopper (425); The first round tank (421) has a first feed pipe (424) fixedly connected to the edge of its top surface.

4. The warm-mix recycled asphalt mixing equipment according to claim 3, characterized in that, The first stirring element (426) includes: The first drive motor (4261) is fixedly mounted on the middle of the top surface of the first round tank (421); The lower end of the first drive motor (4261) is fixedly connected to the top surface of the first round tank (421) with a first round rod (4262), and the lower end of the first round rod (4262) extends to the lower end of the inner cavity of the first discharge hopper (425); The outer wall of the first round rod (4262) is uniformly and fixedly equipped with the first stirring blade (4263) in the inner cavity of the first discharge hopper (425), and the size of the first stirring blade (4263) decreases from top to bottom; The outer wall of the first round rod (4262) is uniformly and fixedly fitted with the second stirring blade (4264) in the inner cavity of the first round tank (421).

5. The warm-mix recycled asphalt mixing equipment according to claim 1, characterized in that, The horizontal new aggregate heating tank (3) includes: The first horizontal tank (32) has a support plate (31) fixedly installed on the left and right sides of its bottom surface between the top surface of the mixing tank (2). A first discharge pipe (33) is fixedly connected between the bottom surface of the first horizontal tank (32) and the top surface of the mixing tank (2). A burner (34) is fixedly connected to the middle of the side wall of the first horizontal tank (32), and a connecting block (35) is fixedly assembled between the side wall and the outer wall of the first horizontal tank (32). The first horizontal tank (32) has a second feed pipe fixedly connected to the right side of its top surface; The first horizontal tank (32) has a blower (36) fixedly connected to the left side of its top surface, and its output end is fixedly connected to a flue gas duct (37). The end of the flue gas duct (37) is fixedly connected to the hot air input end of the hot air heating tank (41); A valve (38) is fixedly mounted on the flue gas duct (37).

6. The warm-mix recycled asphalt mixing equipment according to claim 1, characterized in that, The mixing tank (2) includes: The second horizontal tank (21) has a second discharge pipe (22) fixedly connected to the middle of its bottom surface. The second horizontal tank (21) is fixedly equipped with a second stirring component (26) in the middle of the right wall, and its left end extends to the left side of the inner cavity of the second horizontal tank (21); The outer wall of the second horizontal tank (21) is fixedly fitted with a cavity sleeve (24), which is filled with a layer of rock wool (25). The top surface of the second horizontal tank (21) is fixedly connected to the lower end of the discharge of the graded heating type recycled material heating tank (4), the horizontal new aggregate heating tank (3), and the lower end of the flue gas purification filter (5); The second horizontal tank (21) has a second feed pipe (23) fixedly connected to the edge of its top surface.

7. The warm-mix recycled asphalt mixing equipment according to claim 6, characterized in that, The second stirring element (26) includes: The second drive motor (261) is fixedly mounted on the middle of the right wall of the second horizontal tank (21); The output end of the second drive motor (261) is fixedly connected to the right wall of the second horizontal tank (21) with a second round rod (262), and the left end of the second round rod (262) is rotatably connected to the left side of the inner wall of the second horizontal tank (21); The second round rod (262) has stirring plates (263) uniformly fixedly mounted on the upper and lower sides of its outer wall along the length direction, and the upper and lower stirring plates (263) are asymmetrically distributed; The outer wall of the stirring plate (263) is uniformly provided with guide holes (264).

8. The warm-mix recycled asphalt mixing equipment according to claim 6, characterized in that, The flue gas purification filter (5) includes: The lower end of the pipe body (51) is fixedly connected to the top surface of the second horizontal tank body (21); A limit ring (52) is fixedly assembled at the lower end of the inner wall of the tube (51); An activated carbon filter element (53) is inserted into the tube (51), with its lower end abutting against the upper end of the limiting ring (52).

9. The warm-mix recycled asphalt mixing equipment according to claim 1, characterized in that, The support base (1) includes: The base plate (11) has legs (12) fixedly mounted on both the left and right sides of its top surface. The bottom left and right sides of the mixing tank (2) are fixedly connected to the upper ends of the two side legs (12).

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