A self-cleaning device for thermal regeneration drums

Abstract

This invention relates to the field of asphalt preparation technology and provides a self-cleaning device for a hot recycling drum. It includes a base plate with two horizontally parallel rotating seats on the base plate, and a drum rotatably connected between the two rotating seats. The drum contains multiple guide blades arranged in a circumferential array, positioned on the side of the drum closest to the feeding hopper. Each guide blade has a vibration chamber containing a movable plate that can move back and forth. Multiple vibrating blocks are arranged at intervals on opposite sides of the vibration chamber, and multiple striking blocks are located on the surface of the movable plate near the vibrating blocks. This invention automatically controls the displacement of the movable plate, causing the guide blades to vibrate. This vibration causes the asphalt mixture adhering to the guide blades to detach, significantly reducing material adhesion in the guide area, extending the equipment cleaning cycle, saving labor costs, and improving the reliability and stability of the equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of asphalt preparation technology, and more specifically, it relates to a self-cleaning device for a hot recycling drum. Background Technology

[0002] As more and more highways in the country enter the major repair phase, a large amount of waste asphalt mixture will be generated. If these waste asphalt mixtures can be recycled and reused in large quantities, it can bring considerable economic and social benefits. However, more than 98% of the asphalt mixture mixing equipment used in road construction in my country is forced intermittent mixing equipment.

[0003] One essential step in recycling waste asphalt mixtures using hot recycling equipment is heating and drying. Currently, the guide plate of the hot recycling drying drum on the market is generally made of smooth plate as the guide blade. However, because the recycled material has a certain degree of stickiness at a certain temperature, it often sticks in the guide area first. After the equipment has been in operation for a period of time, the guide capacity of the drum will be greatly reduced. If it is not cleaned in time, it will affect the output of the equipment. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-cleaning device for a hot recycling drum that causes the guide blades to vibrate, so that the asphalt mixture attached to the guide blades can be detached under the vibration force.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A self-cleaning device for a thermal regeneration drum includes a base plate with two horizontally parallel rotating seats on the base plate. A drum is rotatably connected between the two rotating seats. The drum contains multiple guide blades arranged in a circumferential array. The guide blades are located on the side of the drum near the feed hopper. A vibration chamber is formed inside the guide blades. A movable plate that can move back and forth is arranged inside the vibration chamber. Multiple vibrating blocks are arranged at intervals on opposite sides of the vibration chamber. Multiple striking blocks are arranged on the surface of the movable plate near the vibrating blocks. The striking blocks are located between two vibrating blocks. When the movable plate moves, the striking blocks can contact and strike the vibrating blocks. A self-moving component is provided on the movable plate.

[0007] The present invention is further configured such that: the self-moving component includes a first contact rod, the first contact rod is installed at the bottom of the movable plate, a control cavity is opened inside one end of the guide blade near the inner wall of the roller, the other end of the first contact rod slides through into the control cavity, a first sleeve plate is sleeved on the outer surface of the first contact rod located in the control cavity, and a first spring is movably sleeved on the outer surface of the first contact rod between the first sleeve plate and the inner wall of the control cavity.

[0008] The present invention is further configured such that: a push block is provided in the control cavity, the shape of the push block is a right trapezoid, and its inclined surface contacts and slides with one end of the first contact rod located in the control cavity; a second contact rod is provided on the lower surface of the push block, and the other end of the second contact rod slides through the outer surface of the roller.

[0009] The present invention is further configured such that: a second sleeve plate is sleeved on the outer surface of one end of the second contact rod located outside the drum, and a second spring is provided between the second sleeve plate and the outer surface of the drum, and the second spring is movably sleeved on the outer surface of the second contact rod.

[0010] The present invention is further configured such that: an arc-shaped mounting plate is provided on the upper surface of the base plate near the second contact rod, and a plurality of arc-shaped arrayed protrusions are provided on the inner arc surface of the arc-shaped mounting plate, and the end of the second contact rod located outside the roller contacts the outer surface of the protrusions.

[0011] The present invention is further configured such that: a feeding hopper is provided on the front side of the rotating seat, the feeding port at the bottom of the feeding hopper rotates through into the drum, and the feeding port of the feeding hopper is located at the center of the drum.

[0012] The present invention is further configured such that: a toothed ring is fitted on the outer surface of the roller, a motor is provided on the upper surface of the bottom plate, and a gear is provided at one end of the output shaft of the motor, the gear meshing with the toothed ring.

[0013] The advantages of this utility model are:

[0014] This invention automatically controls the displacement of the movable plate, causing the guide blades to vibrate. Asphalt mixture adhering to the guide blades can then be detached under the vibration force, greatly reducing material adhesion in the guide area, extending the equipment cleaning cycle, saving labor costs, and improving the reliability and stability of equipment operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a self-cleaning device for a heat recycling drum according to the present invention;

[0016] Figure 2 This is a front view plan view of the internal structure of the drum of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Base plate; 2. Rotating seat; 3. Roller; 4. Feed hopper; 5. Gear ring; 6. Motor; 7. Gear; 8. Guide blade; 9. Vibrating chamber; 10. Vibrating block; 11. Movable plate; 12. Striking block; 13. Control chamber; 14. First contact rod; 15. First sleeve plate; 16. First spring; 17. Second contact rod; 18. Pushing block; 19. Second sleeve plate; 20. Second spring; 21. Arc-shaped mounting plate; 22. Protrusion. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1-3 The present invention provides the following technical solution:

[0022] Specifically, it refers to a self-cleaning device for a thermal regeneration drum, including a base plate 1. Two horizontally parallel rotating seats 2 are arranged on the base plate 1, and a drum 3 is rotatably connected between the two rotating seats 2. A feeding hopper 4 is arranged on the front of the front rotating seat 2. The feed inlet at the bottom of the feeding hopper 4 rotates through into the drum 3, and the feed inlet of the feeding hopper 4 is located at the center of the drum 3. A toothed ring 5 is fitted on the outer surface of the drum 3. A motor 6 is arranged on the upper surface of the base plate 1. A gear 7 is arranged at one end of the output shaft of the motor 6. The gear 7 is meshed with the toothed ring 5. When in use, the motor 6 starts, and the output shaft of the motor 6 synchronously drives the gear 7 to rotate. The meshing of the gear 7 drives the toothed ring 5 to rotate, and the drum 3 rotates synchronously with the toothed ring 5.

[0023] The drum 3 is provided with a plurality of guide blades 8 arranged in a circular array. The guide blades 8 are located on the side of the drum 3 near the feed hopper 4. A vibration chamber 9 is provided in the guide blades 8. A movable plate 11 that can move back and forth is provided in the vibration chamber 9. A plurality of vibrating blocks 10 are arranged at intervals on both opposite sides of the vibration chamber 9. A plurality of striking blocks 12 are provided on the surface of the movable plate 11 near the vibrating blocks 10. The striking blocks 12 are located between two vibrating blocks 10. When the movable plate 11 moves, the striking blocks 12 can contact the vibrating blocks 10 and strike them.

[0024] During use, by controlling the movable plate 11 to move back and forth in the vibration chamber 9, the striking block 12 moves back and forth with the movable plate 11, so that the striking block 12 can continuously strike the vibrating block 10, causing the vibrating block 10 to vibrate. The vibration force is transmitted to the guide blade 8, so that the asphalt mixture attached to the guide blade 8 can be detached under the vibration force, which greatly reduces the material sticking phenomenon in the guide area, extends the equipment cleaning cycle, saves labor costs, and improves the reliability and stability of equipment operation.

[0025] A control cavity 13 is provided inside one end of the guide blade 8 near the inner wall of the roller 3. A first contact rod 14 is provided on the surface of the movable plate 11 near the control cavity 13. The other end of the first contact rod 14 slides through into the control cavity 13. A first sleeve plate 15 is sleeved on the outer surface of the first contact rod 14 at one end inside the control cavity 13. A first spring 16 is provided between the first sleeve plate 15 and the inner wall of the control cavity 13 and is movably sleeved on the outer surface of the first contact rod 14. When the first spring 16 is not compressed, the first spring 16 will exert a thrust on the first sleeve plate 15, so that the initial position of the first sleeve plate 15 is away from the vibrating cavity 9.

[0026] A push block 18 is provided inside the control cavity 13. The push block 18 is in the shape of a right trapezoid, and its inclined surface contacts and slides with one end of the first contact rod 14 located inside the control cavity 13. A second contact rod 17 is provided on the lower surface of the push block 18, and the other end of the second contact rod 17 slides through the outer surface of the roller 3.

[0027] In use, by controlling the second contact rod 17 to move back and forth, the push block 18 will move synchronously with the second contact rod 17. The inclined surface of the push block 18 will squeeze the first contact rod 14, causing the first contact rod 14 to move to one side of the vibration chamber 9. At the same time, the first spring 16 is subjected to force and is also subjected to pressure. When the push block 18 moves downward, the inclined surface of the push block 18 will not squeeze the first contact rod 14. Therefore, the first contact rod 14 moves to the initial position under the push of the first spring 16, thereby controlling the back and forth movement of the movable plate 11.

[0028] A second sleeve plate 19 is fitted on the outer surface of the end of the second contact rod 17 located outside the roller 3. A second spring 20 is provided between the second sleeve plate 19 and the outer surface of the roller 3. The second spring 20 is movably fitted on the outer surface of the second contact rod 17. An arc-shaped mounting plate 21 is provided on the upper surface of the base plate 1 near the side of the second contact rod 17. A plurality of arc-shaped arrayed protrusions 22 are provided on the inner arc surface of the arc mounting plate 21. The end of the second contact rod 17 located outside the roller 3 contacts the outer surface of the protrusions 22.

[0029] During use, the roller 3 rotates, and the second contact rod 17 rotates synchronously with the roller 3. When the second contact rod 17 rotates to the lower side of the roller 3, the second contact rod 17 contacts the protrusion 22. The protrusion 22 will exert a pushing force on the second contact rod 17, causing the second contact rod 17 to move to one side of the control cavity 13. At the same time, the second spring 20 is stressed and contracts, and the push block 18 moves with the second contact rod 17 and squeezes the first contact rod 14. When the second contact rod 17 is not in contact with the protrusion 22, the second contact rod 17 moves downward under the push of the second spring 20, and the push block 18 moves to the initial position. Using the above structure, the displacement of the movable plate 11 can be automatically controlled during the rotation of the roller 3 without manual control, achieving the effect of self-cleaning of the guide blade.

[0030] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A self-cleaning device for a heat-regenerating drum, comprising a base plate (1), on which two horizontally parallel rotating seats (2) are arranged, and a drum (3) is rotatably connected between the two rotating seats (2), characterized in that: The roller (3) is provided with a plurality of guide blades (8) arranged in a circular array. The guide blades (8) are located on the side of the roller (3) near the feed hopper (4). A vibration chamber (9) is provided in the guide blades (8). A movable plate (11) that can move back and forth is provided in the vibration chamber (9). A plurality of vibration blocks (10) are arranged at intervals on both sides of the vibration chamber (9). A plurality of striking blocks (12) are provided on the surface of the movable plate (11) near the vibration blocks (10). The striking blocks (12) are located between two vibration blocks (10). When the movable plate (11) moves, the striking blocks (12) can contact the vibration blocks (10) and strike them. A self-moving component is provided on the movable plate (11).

2. The self-cleaning device for a heat recycling drum according to claim 1, characterized in that: The self-moving component includes a first contact rod (14), which is installed at the bottom of the movable plate (11). The guide blade (8) has a control cavity (13) inside one end near the inner wall of the roller (3). The other end of the first contact rod (14) slides through into the control cavity (13). A first sleeve plate (15) is sleeved on the outer surface of the first contact rod (14) located inside the control cavity (13). A first spring (16) is movably sleeved on the outer surface of the first contact rod (14) between the first sleeve plate (15) and the inner wall of the control cavity (13).

3. The self-cleaning device for a thermal regeneration drum according to claim 2, characterized in that: The control cavity (13) is provided with a push block (18), which is a right trapezoid in shape. Its inclined surface contacts and slides with one end of the first contact rod (14) located in the control cavity (13). The lower surface of the push block (18) is provided with a second contact rod (17), and the other end of the second contact rod (17) slides through the outer surface of the roller (3).

4. The self-cleaning device for a thermal regeneration drum according to claim 3, characterized in that: The second contact rod (17) is fitted with a second sleeve plate (19) on the outer surface of one end outside the roller (3). A second spring (20) is provided between the second sleeve plate (19) and the outer surface of the roller (3). The second spring (20) is movably fitted on the outer surface of the second contact rod (17).

5. The self-cleaning device for a thermal regeneration drum according to claim 4, characterized in that: An arc-shaped mounting plate (21) is provided on the upper surface of the base plate (1) near the second contact rod (17). The inner arc surface of the arc-shaped mounting plate (21) is provided with a plurality of arc-shaped array protrusions (22). The end of the second contact rod (17) located outside the roller (3) contacts the outer surface of the protrusions (22).

6. The self-cleaning device for a thermal regeneration drum according to claim 1, characterized in that: The front of the rotating seat (2) is provided with a feeding hopper (4). The feed inlet at the bottom of the feeding hopper (4) rotates and passes through the drum (3), and the feed inlet of the feeding hopper (4) is located at the center of the drum (3).

7. The self-cleaning device for a heat recycling drum according to claim 1, characterized in that: The outer surface of the roller (3) is fitted with a toothed ring (5), and the upper surface of the base plate (1) is provided with a motor (6). One end of the output shaft of the motor (6) is provided with a gear (7), which meshes with the toothed ring (5).

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