An asphalt concrete production drying device
By using the combined use of the drainage component and the drying component, the problem of long drying time caused by sand and gravel accumulation is solved, and efficient drying of sand and gravel is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 杨雄
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-21
AI Technical Summary
When existing dryers agitate and turn over sand and gravel, a large amount of sand and gravel accumulates, resulting in a longer drying time and reduced drying efficiency.
The sand and gravel raw materials are leveled by a guide component and spread evenly on a stainless steel conveyor belt. They are then dried by a drying component, which includes the combined use of a stainless steel conveyor belt, ventilation holes, a drying box, a centrifugal fan, and heating pipes to improve heat transfer efficiency.
It effectively avoids the accumulation of sand and gravel, increases the heating area, significantly accelerates the drying speed of sand and gravel, and improves drying efficiency.
Smart Images
Figure CN224534702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of asphalt concrete production technology, specifically a drying device for asphalt concrete production. Background Technology
[0002] Asphalt concrete is a composite material widely used in road construction. It is mainly composed of aggregates (such as crushed stone, sand and mineral powder) and asphalt binder. It has good compressive strength, wear resistance and adaptability to deformation, making it an ideal material for paving highways, urban roads, airport runways and so on. It has good compressive strength, tensile strength, flexural strength and skid resistance. At the same time, due to the presence of asphalt, it also exhibits good flexibility and durability.
[0003] Before asphalt concrete production, the sand and gravel need to be dried to reduce the moisture content and improve the quality of the asphalt concrete. Drying sand and gravel requires a drying device. Currently, sand and gravel are added to a dryer, which has a stirring mechanism inside. Although the sand and gravel are stirred and heated evenly during the drying process, a large amount of sand and gravel still accumulates inside the dryer, resulting in a longer drying time and reduced drying efficiency. Utility Model Content
[0004] The present invention addresses the shortcomings of the prior art by providing a drying device for asphalt concrete production. This device solves the problem that although existing dryers can stir, turn over, heat, and dry sand and gravel, a large amount of sand and gravel still accumulates inside the dryer, requiring a long drying time and reducing the efficiency of sand and gravel drying.
[0005] Specifically, the guiding components can flatten the piled-up sand and gravel materials, allowing them to be spread evenly on the stainless steel conveyor belt for conveying and drying. This effectively prevents the sand and gravel materials from piling up and affecting the drying speed. The drying components can also air-dry the sand and gravel materials spread out on the stainless steel conveyor belt. During the drying process, the large heating area of the sand and gravel materials can accelerate the drying speed and thus improve the drying efficiency.
[0006] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0007] A drying device for asphalt concrete production includes: a dryer, a feed hopper, a workbench, a guiding component, and a drying component. The feed hopper is installed on one side of the top of the dryer, and the workbench is installed at the bottom of the dryer. A guiding component is provided on one side inside the dryer. The guiding component includes: a fixing frame, a support rod, and a scraper block. The drying component is provided inside the dryer. The drying component includes: a stainless steel conveyor belt, a vent, a drying chamber, a centrifugal fan, a heating pipe, an air outlet, and a receiving box.
[0008] In a further preferred embodiment, a fixed frame is installed on one side of the top of the workbench, and three support rods are installed inside the fixed frame, with scraper blocks installed at the bottom of the three support rods.
[0009] In a further preferred embodiment, the workbench is equipped with a stainless steel conveyor belt, and the stainless steel conveyor belt is equipped with rotating rollers. The two ends of the rotating rollers are rotatably connected to the workbench via bearings. The surface of the stainless steel conveyor belt has several ventilation holes. The dryer is equipped with a drying chamber, and the top of the drying chamber is equipped with multiple centrifugal fans. The drying chamber is equipped with heating tubes, which are located at the bottom of the multiple centrifugal fans. The bottom of the heating tubes has an air outlet. A receiving box is provided on one side of the bottom of the stainless steel conveyor belt.
[0010] In a further preferred embodiment, the scraper block has the same length and width as the stainless steel conveyor belt, and there is a gap between the scraper block and the stainless steel conveyor belt.
[0011] In a further preferred embodiment, baffles are installed on both sides of the top of the workbench, and the two baffles are located on top of the stainless steel conveyor belt.
[0012] In a further preferred embodiment, the stainless steel conveyor belt is provided with a guide box at the bottom, the guide box is equipped with an inclined guide platform at the bottom, the guide box is provided with a discharge port on the outside, the inclined surface of the guide platform is opposite to the discharge port, and a collection box is provided on the outside of the discharge port.
[0013] In a further preferred embodiment, a protective shell is installed on the outer end of the workbench, and a servo motor is installed inside the protective shell. The output end of the servo motor is connected to one end of one of the rotating rollers.
[0014] Compared with existing technologies, the beneficial effects of this utility model are:
[0015] (1) By using a fixed frame, support rod and scraper block together, the piled sand and gravel raw materials can be scraped flat, so that the sand and gravel raw materials are spread flat on the stainless steel conveyor belt for conveying and drying, which can effectively prevent the sand and gravel raw materials from piling up and affecting the drying speed.
[0016] (2) By using stainless steel conveyor belt, ventilation holes, drying box, centrifugal fan, heating pipe, air outlet and receiving box together, the sand and gravel raw materials spread on the stainless steel conveyor belt can be air-dried. During the drying process, the sand and gravel raw materials have a large heating area, which can speed up the drying speed of the sand and gravel raw materials and thus improve the drying efficiency of the sand and gravel raw materials. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a schematic cross-sectional view of the present invention.
[0019] Figure 3 This is a schematic diagram of the stainless steel conveyor belt structure of this utility model.
[0020] Figure 4 This is a cross-sectional schematic diagram of the feed box of this utility model.
[0021] Figure 5 This is a schematic diagram of the protective shell structure of this utility model.
[0022] Figures 1-5 middle:
[0023] 1. Dryer; 101. Feed hopper; 102. Workbench.
[0024] 2. Fixing frame; 201. Support rod; 202. Scraper block; 203. Baffle.
[0025] 3. Stainless steel conveyor belt; 301. Ventilation hole; 302. Drying box; 303. Centrifugal fan; 304. Heating tube; 305. Air outlet; 306. Receiving box.
[0026] 4. Feed box; 401. Guide table; 402. Discharge port; 403. Collection box.
[0027] 5. Protective housing; 501. Servo motor. Detailed Implementation
[0028] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the present utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments. It should be noted that the terms "left," "right," "upper," "lower," "top," "bottom," "one side," "provided with," "installed with," "connected with," "top end," "bottom end," "provided with," "open with," "fixed connection," "movable connection," "snap-fit," "sleeve," "outer end," "inner end," "external," and "internal" in the following description are only for ease of understanding and description, and are not intended to indicate or imply that the components or structures referred to must have a specific orientation or installation method, and therefore should not be construed as limitations on this utility model.
[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0030] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0031] Example
[0032] like Figures 1-5 As shown, a drying device for asphalt concrete production includes: a dryer 1, a feed hopper 101, a workbench 102, a guiding component, and a drying component. The feed hopper 101 is installed on one side of the top of the dryer 1, and the workbench 102 is installed at the bottom of the dryer 1. A guiding component is provided on one side inside the dryer 1. The guiding component includes: a fixing frame 2, a support rod 201, and a scraper block 202. The drying component is provided inside the dryer 1. The drying component includes: a stainless steel conveyor belt 3, a vent 301, a drying box 302, a centrifugal fan 303, a heating pipe 304, an air outlet 305, and a receiving box 306.
[0033] Among them, a fixed frame 2 is installed on one side of the top of the workbench 102, and three support rods 201 are installed inside the fixed frame 2. A scraper block 202 is installed at the bottom of the three support rods 201.
[0034] During the production and processing of asphalt concrete, the sand and gravel raw materials are first added into the dryer 1 from the feed hopper 101. The sand and gravel raw materials will fall onto the stainless steel conveyor belt 3. When the stainless steel conveyor belt 3 is running, it will transport the sand and gravel raw materials past the scraper block 202. When the sand and gravel raw materials pass the scraper block 202, the scraper block 202 can scrape the sand and gravel raw materials that are piled up together, so that the sand and gravel raw materials are spread flat on the stainless steel conveyor belt 3 for conveying and drying. This can effectively prevent the sand and gravel raw materials from piling up together and affecting the drying speed.
[0035] The scraper block 202 has the same length and width as the stainless steel conveyor belt 3, and there is a gap between the scraper block 202 and the stainless steel conveyor belt 3. When the scraper block 202 is used, the gap between the scraper block 202 and the stainless steel conveyor belt 3 allows the sand and gravel material to pass through the scraper block 202, thereby achieving the effect of scraping and leveling. The fact that the scraper block 202 has the same length and width as the stainless steel conveyor belt 3 ensures that the sand and gravel material can be evenly spread on the stainless steel conveyor belt 3 when it is scraped and leveled.
[0036] The workbench 102 is equipped with a stainless steel conveyor belt 3, which has a rotating roller inside. The two ends of the rotating roller are rotatably connected to the workbench 102 via bearings. The surface of the stainless steel conveyor belt 3 has several ventilation holes 301. The dryer 1 is equipped with a drying box 302. Multiple centrifugal fans 303 are installed on the top of the drying box 302. Heating tubes 304 are installed inside the drying box 302. The heating tubes 304 are located at the bottom of the multiple centrifugal fans 303. An air outlet 305 is opened at the bottom of the heating tubes 304. A receiving box 306 is provided on one side of the bottom of the stainless steel conveyor belt 3.
[0037] After the sand and gravel raw materials are scraped and spread evenly on the stainless steel conveyor belt 3, the stainless steel conveyor belt 3 rotates and conveys the sand and gravel raw materials through the bottom of the drying box 302. Before conveying, the centrifugal fan 303 and the heating tube 304 are started in advance. After the heating tube 304 starts working, it generates heat. When the centrifugal fan 303 blows air onto the heating tube 304, it generates hot air, which is blown from the air outlet 305 onto the stainless steel conveyor belt 3. This can dry the sand and gravel raw materials spread on the stainless steel conveyor belt 3. During the drying process, the sand and gravel raw materials have a large heating area, which can accelerate the drying speed of the sand and gravel raw materials and thus improve the drying efficiency of the sand and gravel raw materials.
[0038] The addition of several ventilation holes 301 can increase air convection during the drying process of sand and gravel raw materials, thereby accelerating the drying speed of the sand and gravel raw materials.
[0039] The stainless steel conveyor belt 3 conveys the sand and gravel raw materials through the scraper block 202 to spread them out and through the drying box 302 to complete the drying process. After drying, the sand and gravel raw materials will fall from the stainless steel conveyor belt 3 into the collection box 306, where they are collected after drying, reducing the workload of workers.
[0040] Among them, baffles 203 are installed on both sides of the top of the workbench 102. The two baffles 203 are located on the top of the stainless steel conveyor belt 3. During the process of conveying sand and gravel raw materials on the stainless steel conveyor belt 3, the baffles 203 can prevent the sand and gravel raw materials from falling out from both sides of the stainless steel conveyor belt 3.
[0041] The workbench 102 is equipped with a protective shell 5 on its outer end. A servo motor 501 is installed inside the protective shell 5. The output end of the servo motor 501 is connected to one end of one of the rotating rollers. During use, the stainless steel conveyor belt 3 is positioned inside the workbench 102 by being supported by two rotating rollers (e.g., ...). Figure 5 As shown), two rotating rollers are rotatably connected to the bearings of the worktable 102, and one end of one of the rotating rollers is installed and connected to the output end of the servo motor 501. That is, the servo motor 501 can be used as a power source. When the servo motor 501 is started, it drives the rotating roller to rotate, thereby driving the stainless steel conveyor belt 3 to run inside the worktable 102. During the use of the servo motor 501, the protective shell 5 provides anti-collision protection for the servo motor 501 to prevent it from being damaged by collision.
[0042] The power of the dryer 1 is provided by an external power source. When the dryer 1 is in use, a control panel is installed on the outside of the dryer 1. The control panel is electrically connected to the centrifugal fan 303, the heating tube 304 and the servo motor 501 respectively. The control panel is also equipped with synchronous start and synchronous stop buttons for controlling multiple centrifugal fans 303, and on / off buttons for controlling the centrifugal fans 303 and the heating tube 304. The control panel can control the operation of the centrifugal fans 303, the heating tube 304 and the servo motor 501. The control program involved in this utility model can be implemented by those skilled in the art based on the same or similar principles in the prior art. This part is not the innovation of this utility model.
[0043] Among them, the bottom of the stainless steel conveyor belt 3 is provided with a guide box 4, the bottom of the guide box 4 is equipped with an inclined guide platform 401, the outside of the guide box 4 is provided with a discharge port 402, the inclined surface of the guide platform 401 is opposite to the discharge port 402, and a collection box 403 is provided outside the discharge port 402.
[0044] During the conveying of sand and gravel raw materials by the stainless steel conveyor belt 3, several ventilation holes 301 are smaller than the diameter of the sand and gravel raw materials to prevent them from falling off during the conveying and drying process. Some small sand and gravel particles will fall from the ventilation holes 301 into the guide box 4 and land on the inclined guide platform 401, causing the small sand and gravel particles to slide down to the discharge port 402 and be discharged into the collection box 403. This can collect and store the small sand and gravel particles, avoiding them falling on the ground and increasing the cleaning work.
[0045] Working principle:
[0046] During the production and processing of asphalt concrete, the sand and gravel raw materials are first added into the dryer 1 from the feed hopper 101. The sand and gravel raw materials will fall onto the stainless steel conveyor belt 3. When the stainless steel conveyor belt 3 is running, it will transport the sand and gravel raw materials past the scraper block 202. When the sand and gravel raw materials pass the scraper block 202, the scraper block 202 can scrape the sand and gravel raw materials that are piled up together, so that the sand and gravel raw materials are spread flat on the stainless steel conveyor belt 3 for conveying and drying. This can effectively prevent the sand and gravel raw materials from piling up together and affecting the drying speed.
[0047] After the sand and gravel raw materials are scraped and spread evenly on the stainless steel conveyor belt 3, the stainless steel conveyor belt 3 rotates and conveys the sand and gravel raw materials through the bottom of the drying box 302. Before conveying, the centrifugal fan 303 and the heating tube 304 are started in advance. The heating tube 304 generates heat after it starts working, and the centrifugal fan 303 blows hot air onto the heating tube 304, which is then blown onto the stainless steel conveyor belt 3 from the air outlet 305. This allows the sand and gravel raw materials spread on the stainless steel conveyor belt 3 to be dried. During the drying process, the sand and gravel raw materials have a large heating area, which can speed up the drying speed of the sand and gravel raw materials and thus improve the drying efficiency. After the sand and gravel raw materials are conveyed by the stainless steel conveyor belt 3 through the scraper block 202 to spread them evenly and through the drying box 302 to complete the drying, the sand and gravel raw materials will fall from the stainless steel conveyor belt 3 into the collection box 306, and the dried sand and gravel raw materials will be collected, reducing the workload of workers.
[0048] During the conveying of sand and gravel raw materials by the stainless steel conveyor belt 3, several ventilation holes 301 are smaller than the diameter of the sand and gravel raw materials to prevent them from falling off during the conveying and drying process. Some small sand and gravel particles will fall from the ventilation holes 301 into the guide box 4 and land on the inclined guide platform 401, causing the small sand and gravel particles to slide down to the discharge port 402 and be discharged into the collection box 403. This can collect and store the small sand and gravel particles, avoiding them falling on the ground and increasing the cleaning work.
[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0050] The above provides a detailed description of a drying device for asphalt concrete production provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A drying device for asphalt concrete production, characterized in that, include: The dryer (1), feed hopper (101), workbench (102), guide assembly and drying assembly are provided. The feed hopper (101) is installed on one side of the top of the dryer (1), and the workbench (102) is installed at the bottom of the dryer (1). The guide assembly is provided on one side of the interior of the dryer (1). The guide assembly includes: a fixed frame (2), a support rod (201) and a scraper block (202). The drying assembly is provided inside the dryer (1). The drying assembly includes: a stainless steel conveyor belt (3), a vent (301), a drying box (302), a centrifugal fan (303), a heating tube (304), an air outlet (305) and a receiving box (306).
2. The drying device for asphalt concrete production according to claim 1, characterized in that, A fixed frame (2) is installed on one side of the top of the workbench (102). Three support rods (201) are installed inside the fixed frame (2). A scraper block (202) is installed at the bottom of the three support rods (201).
3. The drying device for asphalt concrete production according to claim 2, characterized in that, The workbench (102) is equipped with a stainless steel conveyor belt (3), and the stainless steel conveyor belt (3) is equipped with a rotating roller. The two ends of the rotating roller are rotatably connected to the workbench (102) through bearings. The surface of the stainless steel conveyor belt (3) is provided with several ventilation holes (301). The dryer (1) is equipped with a drying box (302). The top of the drying box (302) is equipped with multiple centrifugal fans (303). The drying box (302) is equipped with a heating tube (304). The heating tube (304) is located at the bottom of the multiple centrifugal fans (303). The bottom of the heating tube (304) is provided with an air outlet (305). The bottom side of the stainless steel conveyor belt (3) is provided with a receiving box (306).
4. The drying apparatus for asphalt concrete production according to claim 3, characterized in that, The scraper block (202) has the same length and width as the stainless steel conveyor belt (3), and there is a gap between the scraper block (202) and the stainless steel conveyor belt (3).
5. The drying apparatus for asphalt concrete production according to claim 3, characterized in that, Both sides of the top of the workbench (102) are equipped with baffles (203), and the two baffles (203) are located on the top of the stainless steel conveyor belt (3).
6. The drying apparatus for asphalt concrete production according to claim 3, characterized in that, The stainless steel conveyor belt (3) is provided with a guide box (4) at the bottom. The guide box (4) is equipped with an inclined guide platform (401) at the bottom. The guide box (4) is provided with a discharge port (402) on the outside. The inclined surface of the guide platform (401) is opposite to the discharge port (402). The discharge port (402) is provided with a collection box (403) on the outside.
7. The drying apparatus for asphalt concrete production according to claim 3, characterized in that, The workbench (102) is equipped with a protective shell (5) at its outer end. A servo motor (501) is installed inside the protective shell (5). The output end of the servo motor (501) is connected to one end of one of the rotating rollers.