Step-by-step regeneration stirring device for waste asphalt

Abstract

The utility model discloses a step-by-step regeneration stirring device for waste asphalt, and relates to the technical field of asphalt regeneration, the step-by-step regeneration stirring device comprises a crushing and screening assembly, and a stirring assembly is arranged on one side of the outer wall of the crushing and screening assembly; the crushing and screening assembly comprises a crushing bin, the bottom end of the crushing bin fixedly communicates with a screening bin, a screening frame is arranged on the inner wall of the screening bin, two sliding rods are fixedly installed on the two sides of the outer wall of the screening frame, the stirring assembly comprises a heating stirring barrel, the top end of the heating stirring barrel fixedly communicates with an exhaust pipe, and the output end of the exhaust pipe fixedly communicates with a waste gas treatment box. The crushing and screening assembly can crush asphalt and then screen the crushed asphalt through the screening frame, so that the asphalt which is not completely crushed and is large in size and the asphalt which is small in size and meets the requirement can fall off from the screening frame to be heated, and the asphalt heating effect is improved; and the heating stirring barrel can treat waste gas generated by asphalt heating, and the waste gas is prevented from polluting air.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt regeneration, in particular to a step-by-step regeneration stirring device for waste asphalt. Background Technique

[0002] In the process of modern transportation infrastructure construction and maintenance, the quantity of waste asphalt materials continues to increase. With the renovation and reconstruction of roads, a large amount of waste asphalt mixture is demolished. If these waste asphalts cannot be properly treated, it will not only cause huge waste of resources, but also have a negative impact on the environment, such as occupying a large amount of land space for stacking, and the harmful substances that may be contained in the waste asphalt seeping out to pollute the soil and groundwater, etc. Therefore, the recycling of waste asphalt has important economic and environmental significance.

[0003] In the prior art, such as a waste asphalt mixture recycling device with the patent number CN221580463U, which includes a stirring cylinder, a plurality of heating plates for heating asphalt are fixedly connected in the inner wall of the stirring cylinder, a crushing assembly for crushing waste asphalt is installed at the top of the stirring cylinder, a stirring assembly for stirring waste asphalt is installed inside the stirring cylinder, the crushing assembly includes a mounting frame fixedly connected to the top of the stirring cylinder, a triangular plate is fixedly connected to the inner bottom wall of the mounting frame, a fixed column is fixedly connected to the bottom of the mounting frame, and two rolling rollers are rotatably connected inside the stirring cylinder. This waste asphalt mixture recycling device can crush the waste asphalt mixture, so that the heating effect of the recycling equipment on the waste asphalt mixture is better, and the practicability of the waste asphalt mixture recycling device is improved.

[0004] Although the above patent can crush waste asphalt and then heat and stir it, there are still some problems. Some large pieces of asphalt may not be completely crushed, and these asphalts will affect the subsequent heating effect due to their large volume. At the same time, some toxic gases will be generated when the asphalt is heated inside the stirring cylinder, and these gases will diffuse into the external environment and affect the air quality. For this reason, the utility model provides a step-by-step regeneration stirring device for waste asphalt. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a step-by-step regeneration stirring device for waste asphalt, which solves the problems that some large pieces of asphalt may not be completely crushed, and these asphalts will affect the subsequent heating effect due to their large volume. At the same time, some toxic gases will be generated when the asphalt is heated inside the stirring cylinder, and these gases will diffuse into the external environment and affect the air quality.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: A step-by-step regeneration stirring device for waste asphalt, including a crushing and screening component, which is used to crush and screen waste asphalt, and a stirring component is arranged on one side of the outer wall of the crushing and screening component;

[0007] The crushing and screening component includes a crushing bin, the bottom end of the crushing bin is fixedly communicated with a screening bin, a screening frame is arranged on the inner wall of the screening bin, two sliding rods are fixedly installed on both sides of the outer wall of the screening frame, one end of the outer wall of the four sliding rods all slidably penetrates the outer wall of the screening bin, springs are sleeved on the outer walls of the four sliding rods, through grooves are penetrated and opened on the outer wall of the screening bin, an extrusion plate is fixedly installed on the outer wall of the screening frame, a first rotating rod is rotatably installed on the outer wall of the screening frame, and a cam is fixedly installed at one end of the outer wall of the first rotating rod;

[0008] The stirring component includes a heating and stirring cylinder, an exhaust pipe is fixedly communicated with the top end of the heating and stirring cylinder, and the output end of the exhaust pipe is fixedly communicated with an exhaust gas treatment box.

[0009] Preferably, two crushing rollers are rotatably installed on the inner wall of the crushing bin, one end of the outer walls of the two crushing rollers all penetrates the outer wall of the crushing bin, and first gears are fixedly installed, the two first gears are meshed with each other, a first motor is fixedly installed on the outer wall of the crushing bin, the output shaft of the first motor penetrates the inner wall of the crushing bin and is fixedly connected with one end of the outer wall of the crushing roller.

[0010] Preferably, one end of each of the four springs is fixedly connected with the inner wall of the screening bin, the other end of each of the four springs is fixedly connected with the outer wall of the screening frame, a group of leakage holes are penetrated and opened at the bottom end of the screening frame, the bottom end of the inner wall of the screening bin has a certain inclination angle, a guide frame is fixedly communicated with the bottom end of the inner wall of the screening bin, the output end of the guide frame is fixedly connected with the heating and stirring cylinder, transmission wheels are fixedly installed on the outer walls of one of the two first gears and the outer wall of the first rotating rod, a belt is sleeved on the outer walls of the two transmission wheels, and an opening and closing door is hingedly connected to the outer wall of the screening bin.

[0011] Preferably, a second motor is fixedly installed on the top end of the heating and stirring cylinder, the output shaft of the second motor penetrates the top end of the heating and stirring cylinder, a stirring shaft is fixedly installed, a group of stirring blades are fixedly installed on the outer wall of the stirring shaft, a scraping plate is fixedly installed on the outer wall of the stirring shaft, and the scraping plate is attached to the inner wall of the heating and stirring cylinder.

[0012] Preferably, a bracket is fixedly installed on the inner wall of the exhaust pipe. A second rotating rod is rotatably installed at the top end of the bracket. A fan blade is fixedly installed at the top end of the second rotating rod. The bottom end of the second rotating rod penetrates through the top end of the bracket and is fixedly installed with a third gear. A second gear is fixedly sleeved on the outer wall of the stirring shaft. The second gear is meshed with the third gear.

[0013] Preferably, a discharge valve is arranged at the bottom end of the heating and stirring cylinder. An exhaust gas treatment device is arranged inside the exhaust gas treatment box. A heating device is arranged inside the wall of the heating and stirring cylinder.

[0014] Beneficial effects

[0015] The utility model provides a step-by-step regeneration stirring device for waste asphalt. Compared with the prior art, the following beneficial effects are achieved:

[0016] (1) For the step-by-step regeneration stirring device for waste asphalt, when the first motor is started, the first motor drives two crushing rollers to rotate. Then the waste asphalt is poured into the crushing bin and crushed by the two crushing rollers. Then the asphalt falls into the screening frame. At this time, there may be some relatively large pieces of asphalt that are not completely crushed. At this time, the asphalt with a smaller volume that meets the requirements will fall from the screening frame and then slide into the heating and stirring cylinder through the guide frame, while the larger pieces of asphalt will stay inside the screening frame. At the same time, when the crushing rollers are rotating, they will drive the first rotating rod and the cam to rotate through the transmission wheel and the belt. During the rotation of the cam, the protruding part will exert an outward force on the extrusion plate. Under the thrust of the cam, the screening frame slides outward along the sliding rod. When the cam rotates to the other end, the cam stops applying force to the extrusion plate. At this time, the screening frame returns to its original position under the action of the spring force. As the cam continues to rotate, the screening frame will make a reciprocating motion, thus constantly shaking, preventing the asphalt in the screening frame from accumulating and blocking, and improving the screening efficiency of the screening frame for asphalt.

[0017] (2) For the step-by-step regeneration stirring device for waste asphalt, the crushed asphalt enters the heating and stirring cylinder. At this time, the heating and stirring cylinder heats the asphalt. Then the second motor is started. The second motor drives the stirring shaft to rotate. The stirring shaft drives the stirring blades to rotate, stirring the asphalt so that the asphalt can be evenly heated. Some exhaust gas will be generated during the heating process of the asphalt. During the rotation of the stirring shaft, it will drive the second gear to rotate. The second gear drives the third gear to rotate. The third gear then drives the second rotating rod and the fan blade to rotate. During the rotation of the fan blade, negative pressure will be generated, thus sucking the exhaust gas generated in the heating and stirring cylinder into the exhaust pipe, and then passing the exhaust gas into the exhaust gas treatment box through the exhaust pipe. After the exhaust gas is purified and filtered, it is then discharged into the air, thereby preventing the exhaust gas from polluting the air. Description of the drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 Schematic diagram of the main structure of the present utility model;

[0020] Figure 3 Cross-sectional view of the crushing and screening assembly of the present utility model;

[0021] Figure 4 Cross-sectional view of the stirring assembly of the present utility model.

[0022] In the figure: 1. Crushing and screening assembly; 11. Crushing bin; 12. Screening bin; 13. Crushing roller; 14. First motor; 15. First gear; 16. Driving wheel; 17. Belt; 18. First rotating rod; 19. Cam; 110. Through groove; 111. Extrusion plate; 112. Screening frame; 113. Slide bar; 114. Spring; 115. Feeding frame; 116. Opening and closing door; 2. Stirring assembly; 21. Heating and stirring cylinder; 22. Discharge valve; 23. Second motor; 24. Stirring shaft; 25. Stirring blade; 26. Scraper; 27. Second gear; 28. Third gear; 29. Bracket; 210. Second rotating rod; 211. Fan blade; 212. Exhaust pipe; 213. Waste gas treatment box. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model provides two technical solutions:

[0025] Figures 1 - 4 The first embodiment is shown: A step-by-step regeneration stirring device for waste asphalt includes a crushing and screening assembly 1, which is used to crush and screen waste asphalt, and a stirring assembly 2 is arranged on one side of the outer wall of the crushing and screening assembly 1;

[0026] The crushing and screening assembly 1 includes a crushing bin 11. The bottom end of the crushing bin 11 is fixedly communicated with a screening bin 12. A screening frame 112 is arranged on the inner wall of the screening bin 12. Two sliding rods 113 are fixedly installed on both sides of the outer wall of the screening frame 112. One end of the outer wall of the four sliding rods 113 slides through the outer wall of the screening bin 12. Springs 114 are sleeved on the outer walls of the four sliding rods 113. Since sliding rods 113 are fixedly installed on both sides of the screening frame 112 and the sliding rods 113 slide through the outer wall of the screening bin 12, this limits the screening frame 112 to move only along the direction of the sliding rods 113. A through groove 110 is penetrated and opened on the outer wall of the screening bin 12. An extrusion plate 111 is fixedly installed on the outer wall of the screening frame 112. The extrusion plate 111 passes through the through groove 110 to prevent the extrusion plate 111 from being blocked during movement. A first rotating rod 18 is rotatably installed on the outer wall of the screening frame 112. A cam 19 is fixedly installed at one end of the outer wall of the first rotating rod 18. When the first rotating rod 18 rotates, it will drive the cam 19 to rotate. When the cam 19 rotates, it will extrude the extrusion plate 111;

[0027] The stirring assembly 2 includes a heating and stirring cylinder 21. The top end of the heating and stirring cylinder 21 is fixedly communicated with an exhaust pipe 212. The output end of the exhaust pipe 212 is fixedly communicated with an exhaust gas treatment box 213.

[0028] Two crushing rollers 13 are rotatably installed on the inner wall of the crushing bin 11. One end of the outer walls of the two crushing rollers 13 penetrates through the outer wall of the crushing bin 11 and first gears 15 are fixedly installed on both. The two first gears 15 are meshed with each other. A first motor 14 is fixedly installed on the outer wall of the crushing bin 11. The output shaft of the first motor 14 penetrates through the inner wall of the crushing bin 11 and is fixedly connected to one end of the outer wall of the crushing roller 13. When the first motor 14 is started, it will drive one crushing roller 13 to rotate, and then one crushing roller 13 drives the other crushing roller 13 to rotate in the opposite direction through the two first gears 15.

[0029] One end of each of the four springs 114 is fixedly connected to the inner wall of the screening bin 12, and the other end of each of the four springs 114 is fixedly connected to the outer wall of the screening frame 112. When the screening frame 112 is not under extrusion, it will be reset under the action of the elastic force of the springs 114. A set of leakage holes are formed through the bottom end of the screening frame 112. The bottom end of the inner wall of the screening bin 12 has a certain inclination angle, so that the asphalt particles can slide into the material guiding frame 115. The bottom end of the inner wall of the screening bin 12 is fixedly communicated with the material guiding frame 115. The output end of the material guiding frame 115 is fixedly communicated with the heating and stirring cylinder 21. A transmission wheel 16 is fixedly installed on the outer wall of one of the two first gears 15 and the outer wall of the first rotating rod 18. A belt 17 is sleeved on the outer walls of the two transmission wheels 16. When the first gear 15 rotates, it can drive the first rotating rod 18 to rotate through the transmission wheel 16 and the belt 17. The outer wall of the screening bin 12 is hingedly connected with an opening and closing door 116, so that the inside of the screening bin 12 can be opened, which is convenient for the staff to clean the asphalt particles inside the screening frame 112.

[0030] Figures 1 - 4 The second embodiment is shown. The main difference from the first embodiment is that: a second motor 23 is fixedly installed at the top end of the heating and stirring cylinder 21. The output shaft of the second motor 23 penetrates through the top end of the heating and stirring cylinder 21 and is fixedly installed with a stirring shaft 24. A set of stirring blades 25 are fixedly installed on the outer wall of the stirring shaft 24. A scraping plate 26 is fixedly installed on the outer wall of the stirring shaft 24. The scraping plate 26 is arranged in a fitting manner with the inner wall of the heating and stirring cylinder 21. When the second motor 23 is started, it can drive the stirring shaft 24 to rotate, and the stirring shaft 24 can further drive the scraping plate 26 to rotate on the inner wall of the heating and stirring cylinder 21, scraping off the asphalt adhering to the inner wall of the heating and stirring cylinder 21.

[0031] A bracket 29 is fixedly installed on the inner wall of the exhaust pipe 212. A second rotating rod 210 is rotatably installed at the top end of the bracket 29. A fan blade 211 is fixedly installed at the top end of the second rotating rod 210. The bottom end of the second rotating rod 210 penetrates through the top end of the bracket 29 and is fixedly installed with a third gear 28. A second gear 27 is fixedly sleeved on the outer wall of the stirring shaft 24. The second gear 27 is meshed with the third gear 28. When the second gear 27 rotates, it can drive the third gear 28 to rotate. The third gear 28 drives the fan blade 211 to rotate through the second rotating rod 210. When the fan blade 211 rotates, it can generate negative pressure to suck out the waste gas inside the heating and stirring cylinder 21.

[0032] A discharge valve 22 is arranged at the bottom end of the heating and stirring cylinder 21. An exhaust gas treatment device is arranged inside the exhaust gas treatment box 213. The exhaust gas treatment device can be provided with a solution for absorbing exhaust gas. When the exhaust gas passes through the solution, the exhaust gas will be absorbed and treated. A heating device is arranged inside the barrel wall of the heating and stirring cylinder 21. The heating device can be provided with an electric heating wire to heat-treat the asphalt.

[0033] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0034] During operation, the first motor 14 is turned on. The first motor 14 drives the two crushing rollers 13 to rotate. Then, waste asphalt is poured into the crushing chamber 11 and crushed by the two crushing rollers 13. Then the asphalt falls into the screening frame 112. At this time, there may be some relatively large pieces of asphalt that are not completely crushed. At this time, the asphalt with a smaller volume that meets the requirements will fall from the screening frame 112 and then slide into the heating and stirring cylinder 21 through the material guiding frame 115, while the larger pieces of asphalt will stay inside the screening frame 112. At the same time, when the crushing rollers 13 are rotating, they will drive the first rotating rod 18 and the cam 19 to rotate through the transmission wheel 16 and the belt 17. During the rotation of the cam 19, the protruding part will exert an outward force on the pressing plate 111. Under the thrust of the cam 19, the screening frame 112 slides outward along the sliding rod 113. When the cam 19 rotates to the other end, the cam 19 stops applying force to the pressing plate 111. At this time, the screening frame 112 returns to its original position under the elastic force of the spring 114. As the cam 19 continues to rotate, the screening frame 112 will make a reciprocating motion, thus constantly shaking, preventing the asphalt in the screening frame 112 from accumulating and blocking, and accelerating the screening efficiency of the screening frame 112 for asphalt. The crushed asphalt enters the heating and stirring cylinder 21. At this time, the heating and stirring cylinder 21 heats the asphalt. Then, the second motor 23 is turned on. The second motor 23 drives the stirring shaft 24 to rotate. The stirring shaft 24 drives the stirring blades 25 to rotate to stir the asphalt, so that the asphalt can be evenly heated. At the same time, the stirring shaft 24 will drive the scraping plate 26 to rotate on the inner wall of the heating and stirring cylinder 21 to scrape off the asphalt attached to the inner wall of the heating and stirring cylinder 21. Some waste gas will be generated during the heating process of the asphalt. During the rotation of the stirring shaft 24, it will drive the second gear 27 to rotate. The second gear 27 drives the third gear 28 to rotate. The third gear 28 further drives the second rotating rod 210 and the fan blade 211 to rotate. During the rotation of the fan blade 211, a negative pressure will be generated, thereby sucking the waste gas generated in the heating and stirring cylinder 21 into the exhaust pipe 212, and then passing the waste gas through the exhaust pipe 212 into the waste gas treatment box 213 for purification and filtration, and then discharging it into the air, thereby preventing the waste gas from polluting the air. When the heating of the asphalt is completed, the discharge valve 22 is opened to discharge the asphalt from the inside of the heating and stirring cylinder 21.

[0035] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A step-by-step regeneration stirring device for waste asphalt, comprising a crushing and screening assembly (1), characterized in that: The crushing and screening component (1) is used to crush and screen waste asphalt, and a stirring component (2) is arranged on one side of the outer wall of the crushing and screening component (1); The crushing and screening component (1) includes a crushing bin (11), the bottom end of the crushing bin (11) is fixedly communicated with a screening bin (12), a screening frame (112) is arranged on the inner wall of the screening bin (12), two slide bars (113) are fixedly installed on both sides of the outer wall of the screening frame (112), one ends of the outer walls of the four slide bars (113) all slide through the outer wall of the screening bin (12), springs (114) are sleeved on the outer walls of the four slide bars (113), a through groove (110) is penetrated and opened on the outer wall of the screening bin (12), a pressing plate (111) is fixedly installed on the outer wall of the screening frame (112), a first rotating rod (18) is rotatably installed on the outer wall of the screening frame (112), and a cam (19) is fixedly installed at one end of the outer wall of the first rotating rod (18); The stirring component (2) includes a heating and stirring cylinder (21), an exhaust pipe (212) is fixedly communicated with the top end of the heating and stirring cylinder (21), and an exhaust gas treatment box (213) is fixedly communicated with the output end of the exhaust pipe (212).

2. The step-by-step regeneration stirring device for waste asphalt according to claim 1, characterized in that: Two crushing rollers (13) are rotatably installed on the inner wall of the crushing bin (11), one ends of the outer walls of the two crushing rollers (13) both penetrate through the outer wall of the crushing bin (11), and first gears (15) are fixedly installed, the two first gears (15) are meshed with each other, a first motor (14) is fixedly installed on the outer wall of the crushing bin (11), the output shaft of the first motor (14) penetrates through the inner wall of the crushing bin (11), and is fixedly connected with one end of the outer wall of the crushing roller (13).

3. The step-by-step regeneration stirring device for waste asphalt according to claim 2, wherein: One ends of the four springs (114) are all fixedly connected with the inner wall of the screening bin (12), the other ends of the four springs (114) are all fixedly connected with the outer wall of the screening frame (112), a group of leakage holes are penetrated and opened at the bottom end of the screening frame (112), the bottom end of the inner wall of the screening bin (12) has a certain inclination angle, a material guiding frame (115) is fixedly communicated with the bottom end of the inner wall of the screening bin (12), the output end of the material guiding frame (115) is fixedly communicated with the heating and stirring cylinder (21), transmission wheels (16) are fixedly installed on the outer walls of one of the two first gears (15) and the outer wall of the first rotating rod (18), a belt (17) is sleeved on the outer walls of the two transmission wheels (16), and an opening and closing door (116) is hingedly connected to the outer wall of the screening bin (12).

4. A step-by-step regeneration stirring device for waste asphalt according to claim 1, characterized in that: A second motor (23) is fixedly installed at the top end of the heating and stirring cylinder (21), the output shaft of the second motor (23) penetrates through the top end of the heating and stirring cylinder (21), and a stirring shaft (24) is fixedly installed, a group of stirring blades (25) are fixedly installed on the outer wall of the stirring shaft (24), a scraping plate (26) is fixedly installed on the outer wall of the stirring shaft (24), and the scraping plate (26) is attached to the inner wall of the heating and stirring cylinder (21).

5. A step-by-step regeneration stirring device for waste asphalt according to claim 4, characterized in that: A bracket (29) is fixedly installed on the inner wall of the exhaust pipe (212). A second rotating rod (210) is rotatably installed at the top end of the bracket (29). A fan blade (211) is fixedly installed at the top end of the second rotating rod (210). The bottom end of the second rotating rod (210) penetrates through the top end of the bracket (29) and is fixedly installed with a third gear (28). A second gear (27) is fixedly sleeved on the outer wall of the stirring shaft (24). The second gear (27) is meshed with the third gear (28).

6. The step-by-step regeneration stirring device for waste asphalt according to claim 1, characterized in that: A discharge valve (22) is arranged at the bottom end of the heating and stirring cylinder (21). An exhaust gas treatment device is arranged inside the exhaust gas treatment box (213). A heating device is arranged inside the cylinder wall of the heating and stirring cylinder (21).

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