Asphalt concrete drying device

Abstract

The utility model discloses an asphalt concrete drying device, which relates to the technical field of asphalt production equipment and comprises a turning box and a screening box connected to the outer bottom of the turning box in a penetrating mode, the outer top of the turning box is connected with a sealing cover through a lock catch, and one end of the outer top of the sealing cover is connected with a feeding pipe in a penetrating mode. A through hole communicating with the screening box is formed in one end of the inner bottom face of the overturning box, and meanwhile an overturning assembly used for continuously stirring gravel of different sizes is further arranged in the overturning box. The rotary motor is used as a power source to drive the auger shaft to drive gravel in the overturning box to be continuously overturned and stirred, and the overturned gravel is dried through the hot-air blower and the first flow dividing pipe, so that air drying is more uniform, and the overall drying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt production equipment, in particular to an asphalt concrete drying device. Background Art

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture made of artificially selected mineral materials with a certain gradation composition and a certain proportion of road asphalt materials, which is mixed under strict control conditions. Since the particle sizes of sand and gravel are different after being taken out of the river, directly drying them without treatment will not only affect the overall drying effect, but also reduce the quality of the later-produced asphalt concrete, which has certain limitations. And the need for drying sand and gravel will require the use of a drying device.

[0003] For example, Chinese Patent Publication No. CN217110294U discloses a drying device for asphalt concrete production, including a body main body and support legs, and a turning drum is arranged in the middle of the body main body. In the above-mentioned published document, by adopting a gas nozzle and an electric heating rod, during actual use, through the continuous rotation of the turning drum and the sorting drum, the sand and gravel inside can be continuously rotated and turned over. At this time, the dry gas sprayed by the gas nozzle and the heat generated by the electric heating rod can perform double drying operations of air drying and drying on the sand and gravel. However, when this patent is used, it is not conducive to screening during the drying process of sand and gravel, which not only causes uneven drying, but also leads to the need for manual classification later, thus being not conducive to long-term use and promotion. Therefore, the technical personnel in this field provide an asphalt concrete drying device to solve the problems raised in the above background art. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an asphalt concrete drying device, which solves the problems raised in the above background art that it is not conducive to screening during the drying process of sand and gravel, which not only causes uneven drying, but also leads to the need for manual classification later, thus being not conducive to long-term use and promotion.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: an asphalt concrete drying device, including a turning box and a screening box connected through the bottom outside the turning box, the outer top of the turning box is connected with a sealing cover through a lock, one end of the outer top of the sealing cover is connected with a feed pipe through penetration, and one end of the inner bottom surface of the turning box is provided with a through hole communicating with the screening box. At the same time, a turning component for continuously stirring sand and gravel of different sizes is also arranged inside the turning box;

[0006] On the outer side walls of two sides of the screening box, a through-type first discharge port and a second discharge port are respectively provided, and a hot air blower and a debris collection box are respectively arranged on the outer side walls of the other two sides of the screening box. At the same time, a screening component for distinguishing sand and gravel of different sizes is arranged inside the screening box.

[0007] As a further technical solution of the present utility model, the flipping component includes an auger shaft rotatably connected to the center position of the inner top surface of the sealing cover. One end of the auger shaft is rotatably connected to the inner bottom surface of the flipping box, and the other end of the auger shaft penetrates through the sealing cover and is fixedly connected to the output end of a driving motor fixedly installed at the center position of the outer top of the sealing cover.

[0008] As a further technical solution of the present utility model, the screening component includes a first sieve plate and a second sieve plate connected to the upper and lower ends of the inner side walls of both sides of the screening box. Both the first sieve plate and the second sieve plate are arranged in an inclined shape, and the inclined angles are opposite. At the center positions of the outer bottom ends of both the first sieve plate and the second sieve plate, lifting blocks are fixedly connected. The upper and lower ends of the inner side wall of the screening box are rotatably connected with two rotating shaft rods. On both sides of the outer peripheral surface of one end of the two rotating shaft rods, eccentric wheels are symmetrically installed. The outer peripheral surfaces of the four groups of eccentric wheels are movably abutted against the outer bottom of the lifting blocks.

[0009] As a further technical solution of the present utility model, the other ends of the two rotating shaft rods penetrate through the screening box and extend to the outer side wall of the screening box. And on the outer peripheral surfaces of the two rotating shaft rods, a first belt pulley and a second belt pulley are respectively fixedly installed. The first belt pulley and the second belt pulley are rotationally connected to each other through a conveyor belt. A rotating motor is fixedly installed on the outer side wall of the screening box, and the output end of the rotating motor is fixedly connected to one of the rotating shaft rods.

[0010] As a further technical solution of the present utility model, fixing blocks are fixedly installed at the upper and lower ends of the inner side walls of both sides of the screening box, and the outer tops of the fixing blocks are fixedly connected to the outer bottoms of the first sieve plate and the second sieve plate through return springs. At the same time, the diameter of the sieve holes of the first sieve plate is larger than that of the second sieve plate.

[0011] As a further technical solution of the present utility model, blocking frames are fixedly installed on the outer tops of the first sieve plate and the second sieve plate, and intercepting plates are fixedly connected inside the two groups of blocking frames and are distributed diagonally at equal intervals.

[0012] As a further technical solution of the present utility model, a through-type opening is provided at the bottom of the outer side wall of the screening box, the debris collection box is placed inside the screening box along the inner side of the opening, and a handle is fixedly installed on the outer side wall of the debris collection box.

[0013] As a further technical solution of the utility model, the air outlet end of the hot air blower is respectively connected to the turning box and the screening box through a first shunt pipe and a second shunt pipe in a penetrating manner.

[0014] The utility model provides an asphalt concrete drying device, which has the following beneficial effects compared with the prior art:

[0015] 1. When drying the asphalt concrete in the design of this device, by using the rotary motor as the power source, the auger shaft is driven to drive the sand and gravel in the turning box to continuously turn and stir, and the hot air blower and the first shunt pipe are used to dry the turned sand and gravel, making the air drying more uniform, which is conducive to improving the overall drying effect.

[0016] 2. When screening the asphalt concrete in the design of this device, the rotary motor is set to drive the rotating shaft rod to drive the eccentric wheel to perform a reciprocating lifting motion on the first sieve plate and the second sieve plate. The vibration generated is used to accelerate the screening of sand and gravel of different sizes, and at the same time, the hot air blower and the second shunt pipe are used to dry the sand and gravel again during the screening process. At the same time, the interception plate is used to reduce the flow efficiency of the sand and gravel, so that the sand and gravel of different sizes can be fully separated and dried, avoiding the trouble of manual separation in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first three-dimensional structure diagram of an asphalt concrete drying device;

[0018] Figure 2 It is a second three-dimensional structure diagram of an asphalt concrete drying device;

[0019] Figure 3 It is a first sectional three-dimensional structure diagram of an asphalt concrete drying device;

[0020] Figure 4 It is a second sectional three-dimensional structure diagram of an asphalt concrete drying device;

[0021] Figure 5 For Figure 4 The partial enlarged view at A in

[0022] In the figure: 1. Tipping box; 2. Screening box; 3. Sealing cover; 4. Feed pipe; 5. Through hole; 6. First discharge port; 7. Second discharge port; 8. Hot air blower; 9. Impurity collection box; 10. Screw shaft; 11. Driving motor; 12. First sieve plate; 13. Second sieve plate; 14. Lifting block; 15. Rotating shaft rod; 16. Eccentric wheel; 17. First pulley; 18. Second pulley; 19. Conveyor belt; 20. Rotating motor; 21. Fixed block; 22. Return spring; 23. Blocking frame; 24. Intercepting plate; 25. Opening; 26. First shunt pipe; 27. Second shunt pipe. Detailed implementation mode

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

[0024] Please refer to Figures 1-5 , the present invention provides a technical solution for an asphalt concrete drying device: including a tipping box 1 and a screening box 2 connected through and at the outer bottom of the tipping box 1. The outer top of the tipping box 1 is connected with a sealing cover 3 through a buckle. One end of the outer top of the sealing cover 3 is connected through and with a feed pipe 4. And one end of the inner bottom surface of the tipping box 1 is provided with a through hole 5 that communicates with the screening box 2. At the same time, a turning assembly for continuously stirring gravel of different sizes is also provided inside the tipping box 1. The turning assembly includes a screw shaft 10 rotatably connected to the center position of the inner top surface of the sealing cover 3. One end of the screw shaft 10 is rotatably connected to the inner bottom surface of the tipping box 1. The other end of the screw shaft 10 penetrates through the sealing cover 3 and is fixedly connected to the output end of a driving motor 11 fixedly installed at the center position of the outer top of the sealing cover 3. When turning, first convey the gravel to be dried along the feed pipe 4 into the interior of the tipping box 1. Then, by starting the driving motor 11, drive the screw shaft 10 to stir and turn the gravel in different ways, so that the hot air can fully act on the surface of the gravel, thereby improving the overall drying effect. Then, open the electric valve at the through hole 5, and introduce the preliminarily dried gravel into the interior of the screening box 2 through the through hole 5 for subsequent screening treatment.

[0025] On the outer side walls of two sides of the screening box 2, there are respectively provided with a through-type first discharge port 6 and a second discharge port 7. On the outer side walls of the other two sides of the screening box 2, there are respectively provided with a hot air blower 8 and a debris collection box 9. At the same time, inside the screening box 2, there is provided a screening assembly for distinguishing sand and gravel of different sizes. The screening assembly includes a first sieve plate 12 and a second sieve plate 13 connected to the upper and lower ends of the inner side walls of two sides of the screening box 2. Both the first sieve plate 12 and the second sieve plate 13 are arranged in an inclined shape, and the inclined angles are opposite. At the center positions of the two ends of the outer bottom of the first sieve plate 12 and the second sieve plate 13, there are respectively fixedly connected with lifting blocks 14. At the upper and lower ends of the inner side wall of the screening box 2, there are rotatably connected with two rotating shaft rods 15. On both sides of the outer peripheral surface of one end of the two rotating shaft rods 15, there are symmetrically installed eccentric wheels 16. The outer peripheral surfaces of the four groups of eccentric wheels 16 are in movable contact with the outer bottom of the lifting blocks 14. The other ends of the two rotating shaft rods 15 penetrate through the screening box 2 and extend to the outer side wall of the screening box 2. On the outer peripheral surfaces of the two rotating shaft rods 15, there are respectively fixedly installed a first pulley 17 and a second pulley 18. The first pulley 17 and the second pulley 18 are rotationally connected to each other through a conveyor belt 19. On the outer side wall of the screening box 2, there is fixedly installed a rotating motor 20. The output end of the rotating motor 20 is fixedly connected to one of the rotating shaft rods 15. At the upper and lower ends of the inner side walls of two sides of the screening box 2, there are fixedly installed fixing blocks 21. And the outer tops of the fixing blocks 21 are fixedly connected to the outer bottoms of the first sieve plate 12 and the second sieve plate 13 through return springs 22. At the same time, the diameter of the sieve holes of the first sieve plate 12 is larger than the diameter of the sieve holes of the second sieve plate 13. When screening, when the preliminarily dried sand and gravel of different sizes flow into the outer surface of the first sieve plate 12 through the through hole 5, start the rotating motor 20 to drive the first pulley 17 and the second pulley 18 to drive the two rotating shaft rods 15 to rotate synchronously under the action of the conveyor belt 19, and then drive the eccentric wheels 16 to drive the lifting blocks 14 to simultaneously jack up and reciprocate the first sieve plate 12 and the second sieve plate 13 with the assistance of the return springs 22, and screen the preliminarily dried sand and gravel of different sizes through the generated vibration, so as to fully distinguish the sand and gravel of different sizes, avoid the trouble of manual distinction in the later stage, and then discharge the distinguished sand and gravel along the first discharge port 6 and the second discharge port 7.

[0026] The first screen plate 12 and the second screen plate 13 are both fixedly mounted with blocking frames 23 on the outer tops, and the two sets of blocking frames 23 are fixedly connected with blocking plates 24 that are evenly spaced and diagonally distributed. A through opening 25 is provided at the bottom of the outer wall of the screening box 2, and the debris collection box 9 is placed inside the screening box 2 along the inner side of the opening 25, and a handle is fixedly mounted on the outer wall of the debris collection box 9. In the process of distinguishing sand and gravel of different sizes, the flow rate of the sand and gravel is reduced by the blocking plates 24 on the blocking frames 23, so that the sand and gravel are fully screened, thereby improving the screening efficiency. At the same time, the dust and impurities on the sand and gravel are shaken off during the screening process and fall into the debris collection box 9 for collection, and the debris collection box 9 is taken out and cleaned by holding the handle.

[0027] The air outlet of the hot air blower 8 is connected to the turning box 1 and the screening box 2 through the first shunt pipe 26 and the second shunt pipe 27. When turning and screening, the hot air blower 8 is started to heat the gas and form hot air, which is transported to the turning box 1 and the screening box 2 along the first shunt pipe 26 and the second shunt pipe 27, respectively, to dry the sand and gravel.

[0028] The working principle of the utility model is as follows: when in use, the sand and gravel that need to be dried are first transported along the feed pipe 4 to the inside of the turning box 1, and at the same time, the hot air blower 8 is synchronously turned on to transport the hot air along the first diversion pipe 26 to the turning box 1, and then the drive motor 11 is started to drive the auger shaft 10 to drive the sand and gravel to be stirred and turned differently, so that the hot air can fully act on the surface of the sand and gravel to improve the overall drying effect of the sand and gravel, and then the electric valve at the through hole 5 is opened to introduce the preliminarily dried sand and gravel along the through hole 5 into the interior of the screening box 2 for subsequent screening treatment.

[0029] At the same time, when the preliminarily dried sand and gravel of different sizes flow into the outer surface of the first screen plate 12 through the through hole 5, the rotating motor 20 is started to drive the first pulley 17 and the second pulley 18 to drive the two rotating shafts 15 to rotate synchronously under the action of the conveyor belt 19, thereby driving the eccentric wheel 16 to drive the lifting block 14 to lift and reciprocate the first screen plate 12 and the second screen plate 13 at the same time with the assistance of the return spring 22, and screen the preliminarily dried sand and gravel of different sizes through the generated vibration, so that the sand and gravel of different sizes can be fully distinguished. During the screening process, the hot air in the hot air blower 8 is synchronously transported to the screening box 2 through the second diversion pipe 27 to dry the sand and gravel again to make it fully dry, and then the distinguished sand and gravel are discharged along the first discharge port 6 and the second discharge port 7.

[0030] Meanwhile, in the process of distinguishing sand and gravel of different sizes, the flow rate of the sand and gravel is reduced by the intercepting plate 24 on the blocking frame 23, so that the sand and gravel can be fully screened, thereby improving the screening efficiency. At the same time, during the screening process, the dust and impurities on the sand and gravel are shaken off and fall into the impurity collection box 9 for collection. When the impurity collection box 9 is full, hold the handle and take out the impurity collection box 9 along the opening 25 for cleaning.

[0031] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An asphalt concrete drying device, characterized in that: The invention comprises a tumbling box (1) and a screening box (2) connected to the outer bottom of the tumbling box (1); the outer top of the tumbling box (1) is connected to a sealing cover (3) through a lock, one end of the outer top of the sealing cover (3) is connected to a feed pipe (4), and one end of the inner bottom surface of the tumbling box (1) is provided with a through hole (5) for mutual communication with the screening box (2); and the inside of the tumbling box (1) is also provided with a turning assembly for continuously stirring sand and gravel of different sizes; The outer walls of two sides of the screening box (2) are respectively provided with a first discharge port (6) and a second discharge port (7) in a through-type manner, and the outer walls of the other two sides of the screening box (2) are also respectively provided with a hot air blower (8) and a collection box (9), and a screening component for distinguishing sand and gravel of different sizes is arranged inside the screening box (2).

2. The asphalt concrete drying device according to claim 1, characterized in that: The flip assembly comprises an auger shaft (10) rotatably connected to the center position of the inner top surface of the sealing cover (3), one end of the auger shaft (10) is rotatably connected to the inner bottom surface of the flip box (1), and the other end of the auger shaft (10) passes through the sealing cover (3) and is fixedly connected to the output end of a driving motor (11) fixedly installed at the center position of the outer top of the sealing cover (3).

3. The asphalt concrete drying device according to claim 1, characterized in that: The screening assembly comprises a first screen plate (12) and a second screen plate (13) connected to the upper and lower ends of the inner side walls on both sides of the screening box (2); the first screen plate (12) and the second screen plate (13) are both arranged in an inclined shape and have opposite inclination angles; lifting blocks (14) are fixedly connected at the center positions of the two ends of the outer bottom of the first screen plate (12) and the second screen plate (13); two rotating shafts (15) are rotatably connected to the upper and lower ends of the inner side walls of the screening box (2); eccentric wheels (16) are symmetrically installed on both sides of the outer peripheral surface of one end of the two rotating shafts (15); and the outer peripheral surfaces of four groups of the eccentric wheels (16) are movably abutted against the outer bottom of the lifting blocks (14).

4. The asphalt concrete drying device according to claim 3, characterized in that: The other ends of the two rotating shafts (15) penetrate the screening box (2) and extend to the outer wall of the screening box (2), and a first pulley (17) and a second pulley (18) are fixedly mounted on the outer peripheral surfaces of the two rotating shafts (15), respectively, and the first pulley (17) and the second pulley (18) are rotatably connected to each other via a conveyor belt (19), and a rotating motor (20) is fixedly mounted on the outer wall of the screening box (2), and the output end of the rotating motor (20) is fixedly connected to one of the rotating shafts (15).

5. The asphalt concrete drying device according to claim 3, characterized in that: Fixed blocks (21) are fixedly installed at the upper and lower ends of the inner side walls on both sides of the screening box (2), and the outer tops of the fixed blocks (21) are fixedly connected to the outer bottoms of the first sieve plate (12) and the second sieve plate (13) via return springs (22), and the sieve hole diameter of the first sieve plate (12) is larger than the sieve hole diameter of the second sieve plate (13).

6. The asphalt concrete drying device according to claim 3, characterized in that: Blocking frames (23) are fixedly mounted on the outer tops of the first sieve plate (12) and the second sieve plate (13), and intercepting plates (24) diagonally distributed at equal intervals are fixedly connected inside the two groups of blocking frames (23).

7. The asphalt concrete drying device according to claim 1, characterized in that: A through opening (25) is provided at the bottom of the outer wall of the screening box (2), the debris collection box (9) is placed inside the screening box (2) along the inner side of the opening (25), and a handle is fixedly mounted on the outer wall of the debris collection box (9).

8. The asphalt concrete drying device according to claim 1, characterized in that: The air outlet end of the hot air blower (8) is connected to the turning box (1) and the screening box (2) through a first shunt pipe (26) and a second shunt pipe (27) respectively.

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