A mixing device for asphalt production

Abstract

This invention relates to the field of asphalt production technology, specifically to a mixing device for asphalt production. The device includes a mixing tank, a motor frame fixedly mounted on the outer wall of the mixing tank, a heater fixedly mounted on the outer wall of the mixing tank, a heating switch on the surface of the heater, and a power supply wire fixedly connected inside the heater. Four support pillars are fixedly connected to the bottom of the mixing tank, a heating layer is fixedly mounted inside the mixing tank, and a conductive pipe is fixedly mounted inside the heater. The end of the conductive pipe furthest from the heater is fixedly connected to the heating layer. This invention avoids the uneven heating of open flames by heating the asphalt through the heating layer and heater. The device has a simple structure, and the scraper design prevents the asphalt from overheating and aging. The variable-shaft mixing rod and pusher plate improve the mixing effect of the mixture and ensure the uniformity and cohesion of the asphalt mixture under heat.

Description

Technical Field

[0001] This invention relates to the field of asphalt production technology, and in particular to a mixing device for asphalt production. Background Technology

[0002] Asphalt is a waterproof, moisture-proof, and corrosion-resistant organic cementitious material. It can be mainly divided into three types: coal tar pitch, petroleum asphalt, and natural asphalt. Currently, asphalt is mainly used in our production for coatings, plastics, rubber, and other industries, as well as for road paving.

[0003] Asphalt is widely used in engineering production, often in the construction of asphalt concrete, which is made from asphalt and aggregates. The production of asphalt concrete requires a mixing device to combine the asphalt and aggregates. Currently, the commonly used mixing devices in engineering involve mixing the asphalt and aggregates in a mixing tank, driven by a motor, and heating the inside of the tank with an open flame to melt the asphalt. However, the use of an open flame leads to uneven heating of the asphalt within the tank. Asphalt near the flame experiences overheating and aging, while asphalt further away from the flame undergoes uneven heating and incomplete melting, making it difficult to bond with the aggregates. Furthermore, the single-shaft mixing rods currently used result in uneven mixing of asphalt further from the shaft, severely impacting the quality of the asphalt concrete. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art by proposing a mixing device for asphalt production. This device is suitable for mixing in the asphalt concrete production process. The device has a simple structure and can ensure that the asphalt will not overheat and age during the heating process. It can also ensure that the asphalt is heated evenly and melted completely. At the same time, it can improve the uniformity of mixing asphalt and sand and gravel to greatly improve the bonding between asphalt and sand and gravel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mixing device for asphalt production, comprising a mixing tank, a motor frame fixedly mounted on the outer wall of the mixing tank, a heater fixedly mounted on the outer wall of the mixing tank, a heating switch provided on the surface of the heater, a power supply wire fixedly connected inside the heater, four support pillars fixedly connected to the bottom of the mixing tank, a heating layer fixedly mounted inside the mixing tank, a conductive tube fixedly mounted inside the heater, the end of the conductive tube away from the heater being fixedly connected to the heating layer, a tank cover fixedly connected to the upper part of the mixing tank, a feed inlet baffle rotatably connected to the surface of the tank cover, a motor fixedly mounted inside the motor frame, a small pulley fixedly mounted on the output shaft of the motor, a transmission belt movably connected inside the small pulley, a rotating shaft rotatably connected inside the tank cover, a large pulley fixedly connected to the head of the rotating shaft, the large pulley and the small pulley being rotatably connected via a transmission belt, and the outer wall of the rotating shaft being fixedly mounted on the motor frame. The mixing tank is equipped with three scrapers. A ring of teeth is located at the bottom of the rotating shaft, and a retaining ring is located at the end of the shaft. A gear is rotatably connected inside the retaining ring, meshing with the rotating shaft. In addition to meshing with the rotating shaft, the gear is rotatably connected to a rack ring. A stirring rod is fixedly connected to the bottom of the gear, and four stirring plates are fixedly connected to the outer wall of the stirring rod. A cross shaft is fixedly installed near the gear on the stirring rod. A through groove is formed at the front end of the cross shaft away from the stirring rod. Four springs are installed inside the cross shaft. Sliding grooves are formed on both sides of the cross shaft at the grooved portion. A pusher plate is fixedly connected to the end of each spring that is not connected to the cross shaft. A sliding rod is provided at the head of each pusher plate, and each sliding rod is slidably connected to the sliding groove. A pulley is installed at the head of each pusher plate, and each pulley is slidably connected to the outer wall of the rack ring. A discharge port is located at the bottom of the mixing tank, and a discharge baffle is rotatably connected to the bottom of the mixing tank.

[0006] In the aforementioned mixing device for asphalt production, screws are fixedly connected inside the tank cover, and the tank cover is fixedly connected to the mixing tank by screws.

[0007] In the above-mentioned mixing device for asphalt production, the small pulley and the large pulley are located on the same horizontal line, and the transmission belt is in a taut state and connected to the small pulley and the large pulley.

[0008] In the aforementioned mixing device for asphalt production, each of the scrapers is in contact with the inner wall of the heating layer, and the height of each scraper is the same as the height of the heating layer.

[0009] In the above-mentioned mixing device for asphalt production, the four mixing plates are wavy in shape and are evenly arranged at ninety degrees on the mixing rod.

[0010] In the above-mentioned mixing device for asphalt production, the cross shaft is arranged above the mixing plate, and the position of the cross shaft is located in the middle of the mixing plate.

[0011] In the aforementioned mixing device for asphalt production, each spring is installed inside a recessed groove.

[0012] In the aforementioned mixing device for asphalt production, the head of each pusher plate has a through groove, and the head of each pusher plate is at the same horizontal level as the rack ring.

[0013] Compared with existing technologies, the advantages of this mixing device for asphalt production are:

[0014] 1. This invention achieves electric heating of asphalt by combining a heater and a heating layer. At the same time, the heating method of the asphalt inside the tank is enclosed, which avoids the instability of heating with an open flame and improves the uniformity of heating of the asphalt.

[0015] 2. The present invention uses a rotating shaft and a scraper to scrape the scraper against the inner wall of the heating layer, thereby scraping off the asphalt adhering to the heating layer, avoiding the phenomenon of asphalt overheating and aging, and ensuring the continuous heating of the device.

[0016] 3. This invention utilizes the combination of gears and a stirring rod. The gears revolve around the rotating shaft while simultaneously rotating on their own axis, driving the stirring rod to mix the asphalt concrete, thus achieving variable shaft mixing. This change in mixing method improves the uniformity of the mixing.

[0017] 4. The stirring rod of the present invention is provided with a pusher plate. When the stirring rod rotates, the cooperation between the pulley and the rack ring causes the pusher rod to move the internal material to the outside. Then, the spring rebound causes the pusher plate to move the material inward, thereby improving the uniformity of asphalt heating. On the other hand, the cooperation of the stirring plate improves the uniformity of mixing and increases the bonding between asphalt and sand. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a bottom view of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the mixing tank of the present invention;

[0021] Figure 4 This is a schematic diagram of the heating device structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the transmission engagement method of the present invention;

[0023] Figure 6 This is a schematic diagram of the stirring device structure of the present invention;

[0024] Figure 7 This is the invention Figure 6 Enlarged view of the structure at point A in the middle;

[0025] Figure 8 This is a schematic diagram of the pusher plate structure of the present invention.

[0026] In the diagram: 1. Mixing tank; 2. Motor frame; 3. Motor; 4. Small pulley; 5. Large pulley; 6. Drive belt; 7. Tank cover; 8. Inlet baffle; 9. Screw; 10. Heater; 11. Heating switch; 12. Power cord; 13. Support column; 14. Discharge baffle; 15. Conductive pipe; 16. Heating layer; 17. Discharge port; 18. Shaft; 19. Snap ring; 20. Gear; 21. Spring; 22. Cross shaft; 23. Groove; 24. Mixing rod; 25. Pusher plate; 26. Stirring plate; 27. Rack ring; 28. Scraper; 29. ​​Tooth; 30. Pulley; 31. Sliding rod; 32. Slide groove. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Reference Figure 1 - Figure 8A mixing device for asphalt production includes a mixing tank 1. A motor frame 2 is fixedly installed on the outer wall of the mixing tank 1. A heater 10 is fixedly installed on the outer wall of the mixing tank 1. A heating switch 11 is provided on the surface of the heater 10. A power cord 12 is fixedly connected inside the heater 10. Four support pillars 13 are fixedly connected to the bottom of the mixing tank 1. A heating layer 16 is fixedly installed inside the mixing tank 1. A conductive pipe 15 is fixedly installed inside the heater 10. The end of the conductive pipe 15 away from the heater 10 is fixedly connected to the heating layer 16. A tank cover 7 is fixedly connected to the upper part of the mixing tank 1. A feed inlet baffle 8 is rotatably connected to the surface of the tank cover 7. The motor frame 2... A motor 3 is fixedly installed in the tank body. A small pulley 4 is fixedly installed on the output shaft of the motor 3. A transmission belt 6 is movably connected inside the small pulley 4. A rotating shaft 18 is rotatably connected inside the tank cover 7. A large pulley 5 is fixedly connected to the head of the rotating shaft 18. The large pulley 5 and the small pulley 4 are rotatably connected via the transmission belt 6. Three scrapers 28 are fixedly connected to the outer wall of the rotating shaft 18. A ring of teeth 29 is provided at the bottom of the rotating shaft 18. A retaining ring 19 is provided at the end of the rotating shaft 18. A gear 20 is rotatably connected inside the retaining ring 19. The gear 20 meshes with the rotating shaft 18 through the teeth 29. In addition to meshing with the rotating shaft 18, the gear 20 is rotatably connected to a rack ring 27. A stirring rod 24 is fixedly connected to the bottom of the device. Four stirring plates 26 are fixedly connected to the outer wall of the stirring rod 24. A cross shaft 22 is fixedly installed on the part of the stirring rod 24 near the gear 20. A through groove 23 is opened at the front end of the cross shaft 22 away from the stirring rod 24. Four springs 21 are installed inside the cross shaft 22. Sliding grooves 32 are opened on both sides of the part of the cross shaft 22 with the grooves 23. A pusher plate 25 is fixedly connected to the end of each spring 21 that is not connected to the cross shaft 22. A sliding rod 31 is provided at the head of each pusher plate 25. Each sliding rod 31 is slidably connected to the sliding groove 32. A pulley 30 is installed at the head of each pusher plate 25. All pulleys 30 are slidably connected to the outer wall of the rack ring 27. The bottom of the mixing tank 1 is provided with a discharge port 17. The bottom of the mixing tank 1 is rotatably connected with a discharge baffle 14. The device has a simple structure. The heating layer 16 makes the asphalt heat evenly. The cooperation between the rotating shaft 18 and the scraper 28 avoids the phenomenon of overheating and aging of the asphalt near the heating layer 16. The belt drive of the motor 3 makes the rotating shaft 18 rotate, which drives the mixing rod 24 to rotate around the rotating shaft 18, so that the mixing plate 26 mixes the asphalt concrete. The uniformity of mixing is improved by the variable shaft agitation. At the same time, the setting of the pusher plate 25 allows the inner and outer layers of the mixture to be interchanged, thereby improving the uniformity of asphalt heating and mixing.

[0030] The tank cover 7 is internally fixedly connected with screws 9. The tank cover 7 and the mixing tank 1 are fixedly connected by screws 9. The tank cover 7, screws 9 and the mixing tank 1 are used to achieve the sealing of the tank during mixing.

[0031] The small pulley 4 and the large pulley 5 are on the same horizontal line. The transmission belt 6 is in a taut state and connected to the small pulley 4 and the large pulley 5 to ensure the transmission efficiency of the device. The taut transmission belt 6 can prevent slippage.

[0032] Each scraper 28 contacts the inner wall of the heating layer 16, and the height of each scraper 28 is the same as the height of the heating layer 16. This ensures that the scraper 28 can scrape off the asphalt attached to the heating layer 16 when it rotates with the rotating shaft 18, thus avoiding the phenomenon of asphalt overheating and aging, and ensuring the heating performance of the device.

[0033] The four stirring plates 26 are wavy in shape and are evenly arranged at ninety degrees on the stirring rod 24 to ensure that the stirring rod 24 can achieve a uniform stirring effect when it rotates.

[0034] The cross shaft 22 is positioned above the mixing plate 26 and in the middle of the mixing plate 26, ensuring that the pusher plate 25 and the mixing plate 26 can cooperate with each other during the mixing process without causing interference or affecting the performance of the device.

[0035] Each spring 21 is installed inside the groove 23, ensuring that the function of the spring 21 is to pull the pusher plate 25 back.

[0036] The head of each pusher plate 25 passes through the groove 23, and the head of each pusher plate 25 is at the same horizontal line as the rack ring 27, so as to ensure that the pusher plate 25 is pushed when the stirring rod 24 rotates to drive the movement of the mixture.

[0037] The working principle of this invention is as follows: During use, the feed inlet baffle 8 is rotated to add asphalt and aggregate into the mixing tank 1. The feed inlet baffle 8 is then reset to achieve a seal. The motor 3 is started, the power cord 12 is energized, and the heating switch 11 is pressed. The heater 10 begins to work, working in conjunction with the heating layer 16 to heat the asphalt inside the tank. The motor 3 drives the small pulley 4 to rotate, which in turn drives the large pulley 5 via the transmission belt 6, causing the rotating shaft 18 to rotate. The rotating shaft 18 drives the scraper 28 to scrape the asphalt on the inner wall of the heating layer 16, preventing overheating and aging caused by continuous adhesion to the heating layer 16. Simultaneously, the rotating shaft 18 drives the gear 20 to rotate, causing the stirring rod 24 to rotate, which in turn drives the mixing plate 26 to mix the asphalt. The mixture is stirred to achieve a uniform mixing of asphalt and aggregate. In addition, when the stirring rod 24 rotates, the cross shaft 22 also rotates. When the cross shaft 22 rotates, the pulley 30 on the pusher plate 25 will push the pusher plate 25 outward when it contacts the rack ring 27, so as to push the internal mixture to the outside. When the cross shaft 22 continues to rotate and the pulley 30 on the pusher plate 25 no longer contacts the rack ring 27, the spring 21 rebounds and pulls the pusher plate 25 inward, bringing the external mixture to the inside. This is repeated to achieve uniform heating of the asphalt and improve the mixing effect, so that the asphalt and aggregate have better bonding. After the mixing is completed, the motor 3 and the heating switch 11 are turned off and the discharge baffle 14 is rotated to discharge the material.

[0038] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0039] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A mixing device for asphalt production, characterized in that, The system includes a mixing tank (1), on which a motor frame (2) is fixedly installed on the outer wall. The system is characterized by: a heater (10) fixedly installed on the outer wall of the mixing tank (1); a heating switch (11) provided on the surface of the heater (10); a power cord (12) fixedly connected inside the heater (10); four support pillars (13) fixedly connected to the bottom of the mixing tank (1); a heating layer (16) fixedly installed inside the mixing tank (1); a conductive tube (15) fixedly installed inside the heater (10); one end of the conductive tube (15) away from the heater (10) fixedly connected to the heating layer (16); and the upper part of the mixing tank (1). A tank cover (7) is fixedly connected, and an inlet baffle (8) is rotatably connected to the surface of the tank cover (7). A motor (3) is fixedly installed inside the motor frame (2). A small pulley (4) is fixedly installed on the output shaft of the motor (3). A transmission belt (6) is movably connected inside the small pulley (4). A rotating shaft (18) is rotatably connected inside the tank cover (7). A large pulley (5) is fixedly connected to the head of the rotating shaft (18). The large pulley (5) and the small pulley (4) are rotatably connected through the transmission belt (6). Three scrapers (28) are fixedly connected to the outer wall of the rotating shaft (18). A ring of teeth (29) is provided at the bottom of the rotating shaft (18). A retaining ring (19) is provided at the end of the shaft (18). A gear (20) is rotatably connected inside the retaining ring (19). The gear (20) meshes with the shaft (18) through teeth (29). In addition to meshing with the shaft (18), the gear (20) is rotatably connected to a rack ring (27). A stirring rod (24) is fixedly connected to the bottom of the gear (20). Four stirring plates (26) are fixedly connected to the outer wall of the stirring rod (24). A cross shaft (22) is fixedly installed on the part of the stirring rod (24) near the gear (20). A through groove (23) is opened at the front end of the cross shaft (22) away from the stirring rod (24). The mixing tank (1) is equipped with four springs (21). The cross shaft (22) has grooves (32) on both sides of the groove (23). Each spring (21) is fixedly connected to a pusher plate (25) at the end that is not connected to the cross shaft (22). Each pusher plate (25) has a slide rod (31) at its head. Each slide rod (31) is slidably connected to the groove (32). Each pusher plate (25) has a pulley (30) at its head. Each pulley (30) is slidably connected to the outer wall of the rack ring (27). The bottom of the mixing tank (1) has a discharge port (17). The bottom of the mixing tank (1) is rotatably connected to a discharge baffle (14).

2. The mixing device for asphalt production according to claim 1, characterized in that: The tank cover (7) is fixedly connected to the inside by screws (9), and the tank cover (7) and the mixing tank (1) are fixedly connected by screws (9).

3. The mixing device for asphalt production according to claim 1, characterized in that: The small pulley (4) and the large pulley (5) are on the same horizontal line, and the transmission belt (6) is in a tensioned state and connected to the small pulley (4) and the large pulley (5).

4. The mixing device for asphalt production according to claim 1, characterized in that: Each of the scrapers (28) contacts the inner wall of the heating layer (16), and the height of each scraper (28) is the same as the height of the heating layer (16).

5. A mixing device for asphalt production according to claim 1, characterized in that: The four stirring plates (26) are wavy in shape and are evenly arranged at ninety degrees on the stirring rod (24).

6. A mixing device for asphalt production according to claim 1, characterized in that: The cross shaft (22) is positioned above the mixing plate (26), and the position of the cross shaft (22) is located in the middle of the mixing plate (26).

7. A mixing device for asphalt production according to claim 1, characterized in that: Each of the springs (21) is installed inside the recess (23).

8. A mixing device for asphalt production according to claim 1, characterized in that: The head of each of the pusher plates (25) passes through the groove (23), and the head of each of the pusher plates (25) is at the same horizontal line as the rack ring (27).

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