A fully enclosed circulating asphalt concrete mixing station

Abstract

The utility model belongs to bituminous concrete mixing station technical field, especially relates to a full -enclosed circulating bituminous concrete mixing station. The mixing station is provided with the feeding inclined belt conveyor, and the feeding inclined belt conveyor is connected with the transition inclined belt conveyor, and the feeding inclined belt conveyor output end is fixed with the baffle, and the baffle is hinged with the material taking plate and the air cylinder, and the air cylinder output end is hinged on the material taking plate, and the guide chute, the background board and the camera are fixed on the rack of the transition inclined belt conveyor through the support, and the vibrator is installed on the guide chute. The utility model carries out intercept sampling in the overall material flow of the feeding inclined belt machine drop point, avoids the problem of insufficient sample representativeness caused by the aggregate layering and fixed depth sampling, and the detection result can reflect the grading condition of the overall aggregate better.

Description

Technical Field

[0001] This utility model belongs to the technical field of asphalt concrete mixing plants, and particularly relates to a fully enclosed circulating asphalt concrete mixing plant. Background Technology

[0002] A fully enclosed circulating asphalt concrete mixing plant is an advanced asphalt mixture production equipment. It recycles hot flue gas and dust, offering advantages such as environmental friendliness, energy saving, and the ability to use large quantities of reclaimed asphalt (RAP). Aggregate particle size has a significant impact on the production quality of asphalt concrete, directly determining the performance of the final pavement. Therefore, online monitoring of various properties of concrete production raw materials is necessary to ensure the quality of asphalt concrete. Traditional offline monitoring methods rely on manual sampling and experimental testing to obtain aggregate particle size data. This approach is not only inefficient but also yields data that is difficult to represent.

[0003] Chinese patent CN211877692U discloses an online monitoring device for concrete aggregate particle size. It uses a rotating sampling arm and sampling hopper to collect samples, which are then dispersed in a feed trough. A high-speed camera then captures images of the falling aggregate particles, enabling continuous sampling and monitoring during concrete aggregate feeding. However, this patent has the following drawbacks: when aggregates are conveyed on a belt conveyor, stratification inevitably occurs due to mechanical vibration, with fine aggregates settling. Since the sampling hopper always samples from a certain material layer height, it may only sample from the upper layer, resulting in insufficient representativeness of the samples. Summary of the Invention

[0004] The purpose of this invention is to provide a fully enclosed circulating asphalt concrete mixing plant to solve the problems existing in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A fully enclosed circulating asphalt concrete mixing plant is provided. The mixing plant is equipped with a feeding inclined belt conveyor, which is connected to a transition inclined belt conveyor. A baffle plate is fixed at the output end of the feeding inclined belt conveyor. A material taking plate and a cylinder are hinged on the baffle plate. The output end of the cylinder is hinged to the material taking plate. A guide chute, a background plate, and a camera are fixed on the frame of the transition inclined belt conveyor through a bracket. A vibrator is installed on the guide chute.

[0006] Furthermore, the baffle plate has a U-shaped cross-section, with the opening of the U-shaped structure facing the feeding inclined belt conveyor. The baffle plate is located above the feeding end of the transition inclined belt conveyor, and a material outlet is provided at the lower position of the baffle plate.

[0007] Furthermore, the material taking plate has a U-shaped cross-section, with the opening of the U-shaped structure facing away from the baffle plate. The material taking plate is fitted into the material taking port, and a fixed shaft is provided at the middle position on both sides of the material taking plate. The fixed shaft is rotatably connected to a bearing seat, which is fixed on the baffle plate. The material taking plate is hinged to the baffle plate through the fixed shaft and the bearing seat.

[0008] Furthermore, the top of the material taking plate has fan-shaped top plates on both sides, with protrusions on the top plates. The bottom two sides of the material taking plate are fixed together in a U-shape. The cylinder is hinged in the middle of the bottom plate and is connected to the material taking plate through the bottom plate.

[0009] Furthermore, the upper and lower ends of the feed chute are open, and a dispersion plate and a feed guide plate are fixed at an incline inside the feed chute. The feed guide plate is equipped with grid bars.

[0010] Furthermore, the dispersing plate is located above the guide plate, with the material-facing surface of the dispersing plate facing the material-receiving plate, and the material-facing surface of the guide plate facing away from the material-receiving plate.

[0011] Furthermore, the background plate is located on the side below the open end of the bottom of the feed chute, close to the material receiving plate, and the camera's acquisition end faces the background plate.

[0012] This utility model has the following beneficial effects: 1. This utility model avoids the problem of insufficient sample representativeness caused by aggregate stratification and fixed depth sampling by intercepting and sampling the entire material flow at the material drop point of the inclined belt conveyor. The test results can better reflect the overall aggregate gradation.

[0013] 2. Through the combined action of the dispersion plate, the guide plate with grid bars, and the vibrator in the feed trough, the sampled aggregate is fully dispersed to form a single-layer particle flow, ensuring the clarity of the images captured by the camera and the accuracy of particle size analysis.

[0014] 3. Compact and reasonable structure: The sampling-related mechanisms (baffle plate, sampling plate, cylinder) and the detection-related mechanisms (guide chute, camera, background plate) are integrated into the existing conveying process, which has low modification cost and does not affect normal material conveying.

[0015] 4. The material receiving plate switches between blocking and receiving. During normal operation, it blocks the material and guides the thrown aggregate onto the transition inclined belt conveyor. When testing is required, it intercepts the thrown aggregate and enters the guide chute to collect aggregate particle size information. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the side structure of the sampling plate when no sample is taken.

[0017] Figure 2 This is a schematic diagram of the side structure of the baffle plate when no sample is taken.

[0018] Figure 3 This is a schematic diagram of the side structure of the sampling plate during sampling in this utility model.

[0019] Figure 4 This is a schematic diagram of the side structure of the baffle plate during sampling in this utility model.

[0020] Figure 5 This is a cross-sectional structural diagram of the material guide groove of this utility model.

[0021] The components are: 1. Feeding inclined belt conveyor; 2. Transition inclined belt conveyor; 3. Baffle plate; 4. Pick-up plate; 5. Cylinder; 6. Guide chute; 7. Background plate; 8. Camera; 9. Vibrator; 10. Pick-up port; 11. Fixed shaft; 12. Bearing seat; 13. Top plate; 14. Protrusion; 15. Bottom plate; 16. Dispersion plate; 17. Guide plate; 18. Grid bar; 19. Support. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0023] like Figure 1-5 As shown, a fully enclosed circulating asphalt concrete mixing plant includes a feeding inclined belt conveyor 1, connected to a transition inclined belt conveyor 2. A baffle plate 3 is fixed to the output end of the feeding inclined belt conveyor 1, guiding the aggregate falling parabolically from its output end into the input end of the transition inclined belt conveyor 2. A receiving plate 4 and a cylinder 5 are hinged to the baffle plate 3. The output end of the cylinder 5 is hinged to the receiving plate 4, driving it to rotate for sampling and particle size detection. A guide chute 6, a background plate 7, and a camera 8 are fixed to the frame of the transition inclined belt conveyor 2. A vibrator 9 is installed on the guide chute 6. The background plate 7 highlights the color of the aggregate, facilitating image capture by the camera 8. The camera 8 is a high-speed camera; after capturing images, it transmits them to a computer for analysis of the aggregate particle size distribution. The connection between the camera 8 and the computer can be wireless or wired.

[0024] The baffle plate 3 has a U-shaped cross section. The opening of the U-shaped structure of the baffle plate 3 faces the feeding inclined belt conveyor 1. The baffle plate 3 is located above the feeding end of the transition inclined belt conveyor 2. The baffle plate 3 has a material receiving port 10 at the lower position.

[0025] The material receiving plate 4 has a U-shaped cross-section, with the opening of the U-shaped structure facing away from the baffle plate 3. The material receiving plate 4 is fitted into the material receiving port 10. A fixed shaft 11 is located at the middle of both sides of the material receiving plate 4. A bearing seat 12 is rotatably connected to the fixed shaft 11 and fixed to the baffle plate 3. The material receiving plate 4 is hinged to the baffle plate 3 via the fixed shaft 11 and the bearing seat 12. When not sampling, the material receiving plate 4 is fitted into the baffle plate 3 to stop the material flow. During sampling, the material receiving plate 4 rotates under the drive of the cylinder 5, thereby intercepting a portion of the falling aggregate into the guide trough 6 for photographing.

[0026] The top of the material receiving plate 4 has fan-shaped top plates 13 on both sides, with protrusions 14 on the top plates 13. A U-shaped bottom plate 15 is fixed to both sides of the lower middle part of the material receiving plate 4. A cylinder 5 is hinged to the middle of the bottom plate 15, and the cylinder 5 is hinged to the material receiving plate 4 via the bottom plate 15. The fan-shaped top plates 13 can better intercept aggregate, and the protrusions 14 can be locked onto the baffle plate 3 to form a limiting position. The bottom plate 15 is used to connect the cylinder 5 and the sampling plate, and both ends of the bottom plate 15 are locked onto the baffle plate 3 to form a limiting position.

[0027] The feed chute 6 is open at both the top and bottom, and the open bottom end of the feed chute 6 can be designed as a strip. A dispersion plate 16 and a guide plate 17 are fixed at an incline inside the feed chute 6, and the guide plate 17 is equipped with grid bars 18. After the aggregate falls onto the dispersion plate 16, it is freely dispersed by the vibration of the vibrator 9. The dispersed aggregate falls onto the guide plate 17 and continues to slide down between the grid bars 18, falling from the open bottom end of the feed chute 6 onto the transition inclined belt conveyor 2.

[0028] The dispersing plate 16 is located above the guide plate 17, with the material receiving surface of the dispersing plate 16 facing the material receiving plate 4, and the material receiving surface of the guide plate 17 facing away from the material receiving plate 4.

[0029] Background plate 7 is located below the open end of the bottom of the guide chute 6, near the material receiving plate 4, and the acquisition end of camera 8 faces background plate 7.

[0030] The working principle of this utility model is as follows: In use, camera 8 is connected to the computer via wired or wireless connection. After the feeding inclined belt conveyor 1 starts, the aggregate falls parabolically from the output end of the feeding inclined belt conveyor 1, and the baffle plate 3 guides the aggregate downwards. When sampling is required, the cylinder 5 retracts, causing the lower part of the picking plate 4 to rotate upwards and the upper part of the picking plate 4 to rotate downwards. The protrusion 14 engages with the baffle plate 3, causing the upper part of the picking plate 4 to penetrate into the interior of the baffle plate 3, thereby intercepting the falling aggregate. The intercepted aggregate slides from the picking plate 4 into the guide chute 6, is dispersed by the dispersing plate 16, and guided by the guide plate 17, falls from the bottom opening of the guide chute 6 onto the transition inclined belt conveyor 2. At the same time, camera 8 takes pictures of the falling aggregate, and vibrator 9 vibrates the guide chute 6 to assist in the dispersion of the aggregate within the guide chute 6. The images captured by camera 8 are transmitted to the computer for particle size analysis.

[0031] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0032] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A fully enclosed circulating asphalt concrete mixing plant, wherein the mixing plant is equipped with a feeding inclined belt conveyor, and the feeding inclined belt conveyor is connected to a transition inclined belt conveyor, characterized in that, The output end of the inclined conveyor belt is fixed with a baffle plate, and a picking plate and a cylinder are hinged to the baffle plate. The output end of the cylinder is hinged to the picking plate. The frame of the inclined conveyor belt is fixed with a guide chute, a background plate, and a camera by a bracket. A vibrator is installed on the guide chute.

2. The fully enclosed circulating asphalt concrete mixing plant according to claim 1, characterized in that, The baffle plate has a U-shaped cross-section, with the opening of the U-shaped structure facing the feeding inclined belt conveyor. The baffle plate is located above the feeding end of the transition inclined belt conveyor, and a material outlet is provided at the lower position of the baffle plate.

3. The fully enclosed circulating asphalt concrete mixing plant according to claim 2, characterized in that, The material taking plate has a U-shaped cross-section, with the opening of the U-shaped structure facing away from the baffle plate. The material taking plate is fitted into the material taking port. A fixed shaft is provided at the middle position on both sides of the material taking plate. The fixed shaft is rotatably connected to a bearing seat, which is fixed on the baffle plate. The material taking plate is hinged to the baffle plate through the fixed shaft and the bearing seat.

4. The fully enclosed circulating asphalt concrete mixing plant according to claim 3, characterized in that, The top of the material receiving plate has fan-shaped top plates on both sides, with protrusions on the top plates. The bottom two sides of the material receiving plate are fixed together in a U-shape. The cylinder is hinged to the middle of the bottom plate and is connected to the material receiving plate through the bottom plate.

5. The fully enclosed circulating asphalt concrete mixing plant according to claim 3, characterized in that, The material guide trough is open at both the top and bottom. A dispersion plate and a guide plate are fixed at an incline inside the material guide trough, and grid bars are provided on the guide plate.

6. The fully enclosed circulating asphalt concrete mixing plant according to claim 5, characterized in that, The dispersing plate is located above the guide plate, with the material-facing surface of the dispersing plate facing the material-receiving plate and the material-facing surface of the guide plate facing away from the material-receiving plate.

7. The fully enclosed circulating asphalt concrete mixing plant according to claim 6, characterized in that, The background plate is located below the open end of the bottom of the feed chute, near the material receiving plate, and the camera's acquisition end faces the background plate.

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