A heating and stirring tank for asphalt heat regeneration

Abstract

The application relates to a heating and stirring tank for asphalt heat regeneration, which comprises a fixed cylinder, a support frame arranged at the bottom of the fixed cylinder, a stirring cylinder connected in the fixed cylinder, a heating element arranged in the fixed cylinder for heating and stirring the tank, a mounting cover arranged at the top of the fixed cylinder, a rotating disc rotatably connected to the mounting cover, a feeding port arranged on the rotating disc, a discharging port arranged on the stirring cylinder, a driving element arranged on the mounting cover and used for driving the rotating disc to rotate, a wall scraping assembly and a stirring assembly arranged on the rotating disc and used for stirring asphalt mixture in the stirring cylinder, the wall scraping assembly comprises a rotating motor, a rotating shaft and a wall scraping plate, the rotating motor is connected to the rotating disc, the rotating shaft is rotatably connected to the rotating disc and coaxially connected to the output shaft of the rotating motor, the wall scraping plate is arranged in a spiral shape, the wall scraping plate is connected to the rotating shaft, and the side edge of the wall scraping plate abuts against the inner wall of the stirring cylinder. The application has the effect of reducing the cost consumption of asphalt heat regeneration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of asphalt hot recycling, in particular to a heating and stirring tank for asphalt hot recycling. BACKGROUND

[0002] The asphalt pavement on-site hot recycling technology is specially used for repairing the surface diseases of the asphalt pavement, mainly refers to the construction method of heating the pavement surface layer to the required depth, loosening the old pavement, adding the reducing or recycling agent, and re-paving the molding.

[0003] The Chinese patent with the publication number CN212595537U discloses an asphalt stirring tank, which comprises a tank body, a motor arranged at the top of the tank body, and a stirring shaft connected with the output shaft of the motor, wherein stirring blades are arranged on the stirring shaft, and a heat-conducting inner container for storing asphalt is sleeved in the tank body, and an electric heating pipe is spirally arranged on the inner wall of the tank body in the gap cavity between the heat-conducting inner container and the tank body; the bottom of the heat-conducting inner container is a convex curved surface structure, so that the longitudinal section of the heat-conducting inner container is in a U shape, the stirring shaft extends into the heat-conducting inner container, and at least one U-shaped stirring head corresponding to the U-shaped structure of the bottom of the heat-conducting inner container is arranged at the bottom end of the stirring shaft.

[0004] In view of the related technologies in the above, in the prior art, the staff uses the motor to drive the stirring blades and the U-shaped stirring head to stir the asphalt in the tank body, however, the asphalt has great viscosity, and in the process of stirring the asphalt, the asphalt is easy to adhere to the inner wall of the tank body, and the prior art does not have a technical means for scraping the asphalt on the inner wall of the tank body, so that the asphalt is wasted, and the cost consumption of the asphalt hot recycling is increased. SUMMARY

[0005] In order to reduce the cost consumption of the asphalt hot recycling, the present application provides a heating and stirring tank for asphalt hot recycling.

[0006] The present application provides the heating and stirring tank for asphalt hot recycling, which adopts the following technical scheme:

[0007] The utility model provides a kind of heating mixing tank for asphalt heat regeneration, including fixed cylinder, the bottom of the fixed cylinder is provided with support frame, stirring cylinder is connected in the fixed cylinder, heating part for heating the stirring cylinder is arranged in the fixed cylinder, the top of the fixed cylinder is provided with mounting cover, rotating disc is rotatably connected on the mounting cover, the rotating disc is provided with feed inlet, the stirring cylinder is provided with discharge port, the mounting cover is provided with driving part for driving rotating disc rotation, the rotating disc is provided with wall scraping assembly and the stirring assembly for the internal asphalt mixture of the stirring cylinder, the wall scraping assembly includes rotating motor, rotating shaft and wall scraping plate, the rotating motor is connected on the rotating disc, the rotating shaft is rotatably connected on the rotating disc, and coaxially connected on the output shaft of the rotating motor, the wall scraping plate is spirally arranged, the wall scraping plate is connected on the rotating shaft, and the side of the wall scraping plate is in contact with the inner wall of the stirring cylinder.

[0008] By adopting the above technical scheme, when stirring asphalt mixture, the staff pours asphalt and mixture into the stirring cylinder, uses the heating part to warm the stirring cylinder, then uses the driving part to drive the rotating disc to rotate, so that the stirring assembly stirs the asphalt mixture in the stirring cylinder, and at the same time, the rotating motor is started to drive the rotating shaft to rotate and drive the wall scraping plate to rotate, which scrapes the asphalt on the inner wall of the stirring cylinder, realizing the effect of stirring asphalt mixture. The staff uses the wall scraping assembly to scrape the inner wall of the stirring cylinder, reducing the possibility of residual asphalt adhering to the inner wall of the stirring cylinder, and reducing the cost consumption of asphalt heat regeneration.

[0009] Optionally, the stirring assembly includes a mounting column and a plurality of stirring rods connected to the mounting column, and each stirring rod is provided with a plurality of stirring spikes.

[0010] By adopting the above technical scheme, when stirring asphalt mixture, the staff uses the driving part to drive the rotating disc to rotate, so that the mounting column rotates and drives the stirring rods to rotate, so that the stirring rods and the stirring spikes crush the lumps in the asphalt mixture, making the asphalt mixture more uniform, and improving the quality of the asphalt mixture.

[0011] Optionally, the stirring rods are slidingly fitted on the mounting column, the mounting column is provided with a moving groove corresponding to the position of the stirring rods, the moving groove is slidingly fitted with a moving plate, the moving plate is connected to the stirring rods, a return spring is sleeved on the stirring rod, the return spring is located between the moving plate and the groove wall of the moving groove, and the wall scraping plate is provided with an abutting inclined surface, and one end of the stirring rod abuts against the abutting inclined surface.

[0012] By adopting the technical scheme, the wall scraping plate can not only scrape the inner wall of the stirring drum, but also push the stirring rod to move and reset by the reset spring, so that the stirring range of the stirring rod in the stirring drum is increased, more blocky materials in the asphalt mixture can be stirred, the asphalt mixture is stirred more evenly, and the quality of the asphalt mixture is improved.

[0013] Optionally, an auxiliary crushing assembly is arranged on the mounting column, the auxiliary crushing assembly comprises a rotating ring frame and a crushing column, the rotating ring frame is connected to the bottom end of the mounting column, the side of the rotating ring frame abuts against the inner side wall of the stirring drum, and the crushing column is connected to the rotating ring frame.

[0014] By adopting the technical scheme, the blocky materials of the asphalt mixture are accumulated at the lowest part of the stirring drum by gravity, the rotating mounting column drives the rotating ring to rotate, the crushing column further crushes the blocky materials at the bottom of the stirring drum, the number of the blocky materials in the asphalt mixture is further reduced, the asphalt mixture is stirred more evenly, and the quality of the asphalt mixture is improved.

[0015] Optionally, the bottom wall of the stirring drum is inclined, the discharge port is arranged at the lowest part of the bottom wall of the stirring drum, the rotating shaft is provided with a crushing assembly, the crushing assembly comprises a lifting column, a crushing spike and a abutting spring, the bottom end of the rotating shaft is provided with a lifting groove, the lifting column is slidingly fitted in the lifting groove, the lifting column is in a rectangular shape, the crushing spike is connected to the surface of the lifting column, the rotating shaft is provided with a containing groove for allowing the crushing spike to enter, and the abutting spring is arranged in the lifting groove and located between the lifting column and the bottom wall of the lifting groove.

[0016] By adopting the technical scheme, the inclined bottom wall enables the asphalt mixture to smoothly enter the discharge port, so that the lower part of the bottom wall of the stirring drum becomes a stirring blind area, the crushing column cannot reach the stirring blind area, and the blocky materials are easily accumulated in the stirring blind area. When the rotating shaft moves to the stirring blind area, the rotating shaft drives the lifting column to rotate, the crushing spike further crushes the blocky materials in the stirring blind area, the asphalt mixture is stirred more evenly, and when the rotating shaft moves to the higher part of the bottom wall of the stirring drum, the crushing spike enters the containing groove.

[0017] Optionally, a heat preservation cavity is arranged between the stirring drum and the fixed cylinder, the heating element is an electric heating wire, the heating element is connected to the surface of the stirring drum, the outer surface of the fixed cylinder is connected with a controller, the driving element is a driving motor, and the heating element, the driving element and the rotating motor are electrically connected to the controller.

[0018] By adopting the above technical scheme, the staff forms a heat preservation layer on the stirring cylinder by using the still air in the heat preservation cavity, reduces the heat loss of the heating element, and makes the asphalt mixture reach the stirring temperature faster through heat exchange of the stirring cylinder, thereby improving the stirring efficiency of the asphalt mixture.

[0019] Optionally, the inner wall of the fixed cylinder is connected with foamed plastic.

[0020] By adopting the above technical scheme, when the wall scraping plate scrapes the asphalt on the inner wall of the stirring cylinder, noise is inevitably generated. The staff encloses the heat preservation space with the foamed plastic, reduces the noise in the stirring cylinder, and further reduces the heat loss in the heat preservation cavity.

[0021] Optionally, the wall scraping plate is connected with a plurality of stirring teeth, and the stirring teeth are arranged at the gap between adjacent two stirring rods.

[0022] By adopting the above technical scheme, the staff drives the stirring teeth to rotate by rotating the wall scraping plate, so that the stirring teeth can assist in stirring the block-shaped objects near the wall scraping plate, the asphalt mixture is stirred more uniformly, and the quality of the asphalt mixture is improved.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. When stirring the asphalt mixture, the staff pours the asphalt and the mixture into the stirring cylinder, heats the stirring cylinder by using the heating element, then drives the rotating disc to rotate by using the driving element, so that the stirring assembly stirs the asphalt mixture in the stirring cylinder, and at the same time, the rotating motor is started to rotate the rotating shaft and drive the wall scraping plate to rotate, the wall scraping plate scrapes the asphalt on the inner wall of the stirring cylinder, thereby achieving the effect of stirring the asphalt mixture. The staff scrapes the inner wall of the stirring cylinder by using the wall scraping assembly, reduces the possibility of residual asphalt adhering to the inner wall of the stirring cylinder, and reduces the cost consumption of asphalt heat regeneration;

[0025] 2. The wall scraping plate can not only scrape the asphalt on the inner wall of the stirring cylinder, but also push the stirring rod to move and reset by using the reset spring, thereby increasing the stirring range of the stirring rod in the stirring cylinder, and more block-shaped objects in the asphalt mixture can be stirred, so that the asphalt mixture is stirred more uniformly, and the quality of the asphalt mixture is improved;

[0026] 3. The staff uses the inclined bottom wall to make the asphalt mixture enter the discharge port smoothly, so that the lower part of the bottom wall of the stirring cylinder becomes a stirring blind area, so that the stirring column cannot reach it, and the block-shaped material is easy to accumulate in the stirring blind area. When the rotating shaft moves to the stirring blind area, the staff rotates the lifting column by using the rotating rotating shaft, so that the stirring thorn further stirs the block-shaped material in the stirring blind area, so that the asphalt mixture is more evenly stirred, and when the rotating shaft moves to the higher part of the bottom wall of the stirring cylinder. The stirring thorn will enter the containing groove. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall structure schematic diagram of the heating and stirring tank for asphalt hot regeneration in the embodiment of the application.

[0028] Figure 2 It is the top view of the heating and stirring tank in the embodiment of the application.

[0029] Figure 3 It is Figure 2 A-A sectional view in the figure.

[0030] Figure 4 It is the structure schematic diagram of the inside of the stirring cylinder in the embodiment of the application.

[0031] Figure 5 It is Figure 3 B in the figure.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, fixed cylinder; 11, support frame; 12, mounting cover; 13, heat preservation cavity; 14, heating part; 15, controller; 16, foamed plastic; 2, stirring cylinder; 21, discharge port; 3, driving part; 31, rotating disc; 32, feeding port; 4, stirring assembly; 41, mounting column; 411, moving groove; 412, reset spring; 42, stirring rod; 421, moving plate; 422, stirring thorn; 423, abutting ball; 5, wall scraping assembly; 51, rotating motor; 52, rotating shaft; 521, lifting groove; 522, containing groove; 53, wall scraping plate; 531, abutting slope; 532, crushing tooth; 6, crushing assembly; 61, lifting column; 62, crushing thorn; 63, abutting spring; 7, auxiliary crushing assembly; 71, rotating ring frame; 72, crushing column. DETAILED DESCRIPTION

[0033] The following will be combined with the Figures 1-5 The application is further described in detail.

[0034] The embodiment of the application discloses a heating and stirring tank for asphalt hot regeneration. Referring to Figure 1 , Figure 2 and Figure 3The heating stirring tank for asphalt heat regeneration comprises a fixed cylinder 1, a support frame 11 fixedly connected to the bottom wall of the fixed cylinder 1, and an installation cover 12 provided at the top wall opening of the fixed cylinder 1. A stirring cylinder 2 is fixedly connected to the fixed cylinder 1, and a heat preservation cavity 13 is arranged between the stirring cylinder 2 and the fixed cylinder 1. The bottom wall of the stirring cylinder 2 is arranged in an inclined manner, and a discharge port 21 is arranged at the lowest position of the bottom wall of the stirring cylinder 2. A heating element 14 is arranged on the stirring cylinder 2, the heating element 14 is an electric heating wire, a controller 15 is fixedly connected to the outer wall of the fixed cylinder 1, and the heating element 14 is electrically connected to the controller 15.

[0035] With reference to Figure 3 and Figure 4 , the installation cover 12 is fixedly connected with a mounting frame, and a driving element 3 is arranged on the mounting frame, wherein the driving element 3 is a driving motor in the embodiment, and the driving element 3 is electrically connected to the controller 15. A rotating disc 31 is rotatably connected to the installation cover 12, an inlet 32 is fixedly connected to the rotating disc 31, and an output shaft of the driving element 3 is fixedly connected to the rotating disc 31. A stirring assembly 4 is arranged on the rotating disc 31, and the stirring assembly 4 comprises a mounting column 41 and a stirring rod 42. The mounting column 41 is fixedly connected to the bottom wall of the rotating disc 31, the mounting column 41 is welded by two half columns, a plurality of moving grooves 411 are formed in the mounting column 41 along the length direction of the mounting column 41, and the moving grooves 411 are rectangular grooves. The stirring rod 42 is arranged at a position corresponding to the moving grooves 411 on the mounting column 41, the stirring rod 42 penetrates through the mounting column 41 and is in sliding fit with the mounting column 41, a moving plate 421 is fixedly connected to the stirring rod 42, and the moving plate 421 is in sliding fit in the moving grooves 411. A reset spring 412 is arranged in the moving grooves 411, the reset spring 412 is sleeved on the stirring rod 42 and located between the groove wall of the moving grooves 411 and the moving plate 421. A plurality of stirring prongs 422 are fixedly connected to the stirring rod 42, and the stirring prongs 422 on adjacent two stirring rods 42 are perpendicular to each other.

[0036] With reference to Figure 3 and Figure 4 , a wall scraping assembly 5 is arranged on the rotating disc 31, and the wall scraping assembly 5 comprises a rotating motor 51, a rotating shaft 52 and a wall scraping plate 53. The rotating motor 51 is connected to the rotating disc 31 by bolts, and the rotating motor 51 is electrically connected to the controller 15. The rotating shaft 52 is rotatably connected to the rotating disc 31 and coaxially connected to the output shaft of the rotating motor 51. The wall scraping plate 53 is fixedly connected to the surface of the rotating shaft 52, the wall scraping plate 53 is arranged in a spiral shape, and the side edge of the wall scraping plate 53 contacts the inner wall of the stirring cylinder 2. A resisting ball 423 is fixedly connected to one end of the stirring rod 42 close to the rotating shaft 52, and a crushing tooth 532 is fixedly connected to the gap of the adjacent two resisting balls 423 on the circular arc wall of the wall scraping plate 53. A resisting inclined surface 531 is arranged on the wall scraping plate 53, and the resisting ball 423 abuts against the resisting inclined surface 531.

[0037] When the asphalt mixture is stirred, the staff starts the driving member 3 by using the controller 15, so that the rotating disc 31 rotates, the mounting column 41 rotates, the stirring rod 42 rotates, and the stirring bar 422 stirs the asphalt mixture. At the same time, the rotating motor 51 is started, the rotating shaft 52 rotates, the scraping plate 53 is driven by the rotating disc 31 to revolve while rotating, the scraping plate 53 scrapes the inner wall of the stirring drum 2 while abutting against the ball 423, the stirring rod 42 is driven to move, the moving plate 421 moves, and the restoring member is compressed, so that the stirring effect of the asphalt mixture is realized. The moving stirring rod 42 can increase the stirring range of the asphalt mixture, so that the asphalt and the mixture are more uniformly stirred.

[0038] With reference to Figure 3 and Figure 5 , the rotating shaft 52 is provided with a crushing assembly 6, which comprises a lifting column 61, a crushing bar 62, and an abutting spring 63. The bottom end of the rotating shaft 52 is provided with a lifting groove 521, the lifting column 61 is in sliding fit in the lifting groove 521, the bottom end of the lifting column 61 is threadedly connected with a steel ball roller, and the steel ball roller abuts against the bottom wall of the stirring drum 2. The crushing bar 62 is fixedly connected with a plurality of crushing bars 62 on the surface of the lifting column 61, the abutting spring 63 is arranged in the lifting groove 521 and located between the lifting column 61 and the bottom wall of the lifting groove 521, and the bottom end of the rotating shaft 52 is provided with a containing groove 522 for allowing the crushing bar 62 to enter.

[0039] When the asphalt mixture is stirred, the staff starts the driving member 3 by using the controller 15, so that the rotating disc 31 rotates, the mounting column 41 rotates, the stirring rod 42 rotates, and the stirring bar 422 stirs the asphalt mixture. At the same time, the rotating motor 51 is started, the rotating shaft 52 rotates, the scraping plate 53 is driven by the rotating disc 31 to revolve while rotating, the scraping plate 53 scrapes the inner wall of the stirring drum 2 while abutting against the ball 423, the stirring rod 42 is driven to move, the moving plate 421 moves, and the restoring member is compressed, so that the stirring effect of the asphalt mixture is realized. The moving stirring rod 42 can increase the stirring range of the asphalt mixture, so that the asphalt and the mixture are more uniformly stirred.

[0040] With reference to Figure 3 and Figure 4 , in order to further uniformly crush the asphalt mixture, the mounting column 41 is provided with a secondary crushing assembly 7, which comprises a rotating ring frame 71 and a crushing column 72. The rotating ring frame 71 is fixedly connected to the bottom end of the mounting column 41, and the rotating ring frame 71 is provided with an avoiding notch at the position corresponding to the rotating shaft 52. The crushing column 72 is fixedly connected with a plurality of crushing columns 72 on the rotating ring frame 71. The staff drives the rotating ring frame 71 to rotate by using the rotating mounting column 41, so that the crushing column 72 strikes the block-shaped objects in the asphalt mixture, and the asphalt mixture is further uniformly crushed.

[0041] With reference to Figure 3 , in order to reduce the noise in the stirring drum 2, the inner wall of the fixed cylinder 1 is fixedly connected with a foamed plastic 16, which reduces the noise generated by the scraping plate 53 scraping the inner wall of the stirring drum 2, and further insulates the stirring drum 2, thereby further reducing the heat loss in the insulating cavity 13.

[0042] The implementation principle of the heating and stirring tank for asphalt hot recycling is as follows: when the asphalt is hot recycled, the staff puts the asphalt and the mixture into the stirring cylinder 2, the controller 15 is powered to heat the heating part 14, the temperature of the stirring cylinder 2 is raised, then the driving part 3 is started to rotate the rotating disc 31, the mounting column 41 is rotated to rotate the stirring rod 42, the asphalt mixture is stirred, the mounting column 41 drives the rotating ring frame 71 to rotate, the crushing column 72 crushes the block in the asphalt mixture, at the same time, the rotating motor 51 is started to rotate the rotating shaft 52, the scraping wall plate 53 is moved, the scraping wall plate 53 is driven by the rotating disc 31 to revolve, the asphalt on the inner wall of the stirring cylinder 2 is scraped and ground, the stirring rod 42 is moved, the reset spring 412 is pressed, the rotating shaft 52 revolves, at the same time, the lifting column 61 is lowered under the action of the pressing spring 63, moves on the bottom wall of the stirring cylinder 2 through the steel ball roller, and the lifting column 61 is driven by the rotating shaft 52 to rotate, so as to assist in crushing the block near the bottom wall of the stirring cylinder 2, the asphalt mixture is uniformly stirred, and the effect of asphalt hot recycling is realized.

[0043] The staff uses the scraping wall assembly 5 to scrape the inner wall of the stirring cylinder 2, reduces the possibility that the asphalt is adhered to the inner wall of the stirring cylinder 2, and reduces the cost consumption of the asphalt hot recycling.

[0044] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A heating mixing tank for asphalt hot recycling, characterized by: The utility model provides a kind of asphalt mixing machine, including fixed cylinder (1), the bottom of the fixed cylinder (1) is provided with support frame (11), stirring cylinder (2) is connected in the fixed cylinder (1), heating part (14) is provided in the fixed cylinder (1) and heating the stirring cylinder (2), the top of the fixed cylinder (1) is provided with mounting cover (12), rotating disc (31) is rotatably connected on the mounting cover (12), feeding port (32) is provided on the rotating disc (31), discharge port (21) is provided on the stirring cylinder (2), driving part (3) for driving rotating disc (31) rotation is provided on the mounting cover (12), scraping wall assembly (5) and stirring assembly (4) for stirring asphalt mixture inside the stirring cylinder (2) are provided on the rotating disc (31), the scraping wall assembly (5) includes rotating motor (51), rotating shaft (52) and scraping wall plate (53), the rotating motor (51) is connected on the rotating disc (31), the rotating shaft (52) is rotatably connected on the rotating disc (31), and coaxially connected on the output shaft of the rotating motor (51), the scraping wall plate (53) is spirally arranged, the scraping wall plate (53) is connected on the rotating shaft (52), and the side of the scraping wall plate (53) is in contact with the inner wall of the stirring cylinder (2);The stirring assembly (4) includes mounting column (41) and stirring rod (42), the mounting column (41) is connected on the rotating disc (31), and a plurality of stirring rods (42) are connected on the mounting column (41), and a plurality of stirring prongs (422) are connected on the stirring rod (42);The stirring rod (42) is slidingly fitted on the mounting column (41), the mounting column (41) is provided with moving groove (411) corresponding to the position of the stirring rod (42), the moving groove (411) is slidingly fitted with moving plate (421), the moving plate (421) is connected with the stirring rod (42), the stirring rod (42) is provided with reset spring (412), and the reset spring (412) is located between the moving plate (421) and the groove wall of the moving groove (411), the scraping wall plate (53) is provided with abutting inclined surface (531), and one end of the stirring rod (42) is in contact with the abutting inclined surface (531).

2. The heating mixing tank for asphalt hot recycling according to claim 1, characterized in that: The mounting column (41) is provided with auxiliary crushing assembly (7), the auxiliary crushing assembly (7) includes rotating ring frame (71) and crushing column (72), the rotating ring frame (71) is connected at the bottom end of the mounting column (41), and the side of the rotating ring frame (71) is in contact with the inner wall of the stirring cylinder (2), a plurality of crushing columns (72) are connected on the rotating ring frame (71), and the rotating ring frame (71) is provided with avoiding notch corresponding to the position of the rotating shaft (52).

3. The heating mixing tank for asphalt hot recycling according to claim 2, characterized in that: The bottom wall of the stirring barrel (2) is inclined, the discharge port (21) is arranged at the lowest position of the bottom wall of the stirring barrel (2), the rotating shaft (52) is provided with a crushing assembly (6), the crushing assembly (6) comprises a lifting column (61), a crushing spike (62) and a pressing spring (63), the bottom end of the rotating shaft (52) is provided with a lifting groove (521), the lifting column (61) is slidingly fitted in the lifting groove (521), the lifting column (61) is in a rectangular shape, a plurality of crushing spikes (62) are connected to the surface of the lifting column (61), the rotating shaft (52) is provided with a containing groove (522) allowing the crushing spike (62) to enter, the pressing spring (63) is arranged in the lifting groove (521) and located between the lifting column (61) and the bottom wall of the lifting groove (521), when the lifting column (61) abuts against the highest position of the bottom wall of the stirring barrel (2), the crushing spike (62) is located in the containing groove (522).

4. The heating mixing tank for asphalt hot recycling according to claim 1, characterized in that: The stirring barrel (2) and the fixed barrel (1) are provided with a heat preservation cavity (13), the heating element (14) is an electric heating wire, the heating element (14) is connected to the surface of the stirring barrel (2), the outer surface of the fixed barrel (1) is connected with a controller (15), the driving element (3) is a driving motor, and the heating element (14), the driving element (3) and the rotating motor (51) are all electrically connected to the controller (15).

5. The heating mixing tank for asphalt hot recycling according to claim 4, characterized in that: The inner wall of the fixed barrel (1) is connected with foamed plastic (16).

6. The heating mixing tank for asphalt hot recycling according to claim 1, characterized in that: The scraping wall plate (53) is connected with a plurality of crushing teeth (532), and the crushing teeth (532) are arranged at the gap between adjacent two stirring rods (42).

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