Efficient asphalt mixture stirring device and using method
By combining the fine aggregate weighing hopper, the coarse aggregate weighing hopper, and the mixing pot, and adjusting the mixing speed using the analysis module, the problem of low production efficiency of asphalt mixture mixing equipment was solved, achieving efficient and uniform asphalt mixture production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YUNNAN JIAOTOU HIGHWAY CONSTR NO 5 ENG CO LTD
- Filing Date
- 2026-02-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing asphalt mixing equipment often results in incomplete asphalt coating when coarse and fine aggregates are added to asphalt simultaneously, requiring extended mixing time and leading to low production efficiency.
By combining fine aggregate weighing hoppers, coarse aggregate weighing hoppers, and mixing pots, and adjusting the mixing speed in real time through an analysis module, combined with ambient temperature and humidity data, precise feeding and mixing of asphalt and aggregates can be achieved, ensuring uniformity.
It improves the mixing efficiency and uniformity of asphalt mixtures, ensures stable production under different temperature and humidity conditions, avoids energy waste and equipment overload, and achieves intelligent and energy-saving operation.
Smart Images
Figure CN121976444A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mixing equipment technology, and in particular to a high-efficiency mixing device for asphalt mixtures and its usage method. Background Technology
[0002] Asphalt mixture mixing equipment is an engineering device used in highway construction and maintenance. It ensures the production quality and construction efficiency of asphalt mixture by quickly and evenly mixing aggregates, asphalt and fillers.
[0003] The existing asphalt mixture mixing equipment generally involves first adding sand and gravel aggregates into the mixing pot and mixing them. After a period of time, powder and asphalt are added into the mixing pot at the same time. The mixing equipment then performs reciprocating mixing to produce asphalt mixtures. However, in actual production, due to the tight mixing time, when coarse and fine aggregates are added to the mixing pot at the same time as asphalt and powder, the asphalt may not be able to completely coat the coarse and fine aggregates, thus requiring an extension of the mixing time.
[0004] Therefore, the issues raised above need to be addressed and improved. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency asphalt mixture mixing device and its usage method.
[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: an efficient asphalt mixture mixing device and its usage method, comprising a hot aggregate storage bin, a fine aggregate weighing hopper, a coarse aggregate weighing hopper, a mixing pot, and a mounting frame. The interior of the hot aggregate storage bin is divided into multiple storage areas by multiple partition plates, and the bottom of the hot aggregate storage bin is provided with longitudinal discharge ports in conjunction with the multiple storage areas. The fine aggregate weighing hopper and the coarse aggregate weighing hopper are respectively located on both sides below the discharge ports of the hot aggregate storage bin. The mixing pot is placed directly below the fine aggregate weighing hopper and the coarse aggregate weighing hopper, and the bottom of the mixing pot is provided with a discharge port. The mounting frame is installed at the rear end of the hot aggregate storage bin, the fine aggregate weighing hopper, the coarse aggregate weighing hopper, and the mixing pot. The coarse aggregate weighing hopper, the fine aggregate weighing hopper, and the hot aggregate storage bin are equipped with a material distribution component, and the mixing pot is equipped with a batching and mixing component.
[0007] The control box of the stirring device is equipped with intelligent control components, which include an analysis module.
[0008] The analysis module receives and preprocesses the acquired environmental temperature and humidity and mixing parameter data; it analyzes the deviations in asphalt feed rate, aggregate feed rate, and mixing speed caused by changes in temperature and humidity, and adjusts the mixing speed according to the deviations, generating a speed adjustment signal and transmitting it to the adjustment module; it quantifies the mixing uniformity through laboratory quantitative index scores, production process parameter index scores, and visual observation index scores, and generates a stop mixing signal when the mixing uniformity reaches the set value, transmitting the stop mixing signal to the adjustment module.
[0009] Preferably, the steps for the analysis module to perform the material feeding deviation analysis are as follows:
[0010] M1: Humidity based on standard environmental humidity and temperature data. and temperature data The reference asphalt feed rate corresponding to the reference humidity and reference temperature is: The actual amount of asphalt fed into the feed The data is acquired and preprocessed; the actual amount of asphalt fed is... , This is the humidity correction factor. This is the temperature correction factor; the reference stirring speed corresponding to the reference humidity and reference temperature is... Actual stirring speed , This is a combined temperature and humidity correction factor; the baseline aggregate feed rate is... The actual amount of aggregate fed in , Aggregate density at baseline humidity Actual humidity The aggregate density below;
[0011] M2: After acquiring the current humidity and temperature data, the acquired data is preprocessed, and the preprocessed data is substituted into the corresponding calculation formula along with the reference temperature and humidity data to calculate the corresponding actual feed rate. , And after generating the speed control signal, the stirring speed will be affected by changes in temperature and humidity data. The speed control signal is transmitted to the regulating module.
[0012] Preferably, the steps for the analysis module to perform the mixing uniformity analysis are as follows:
[0013] N1: A laboratory quantitative index score reflecting the inherent homogeneity of materials. The production process parameter scores that reflect the stability of the stirring process. And the scores of intuitive observation indicators reflecting the apparent uniformity of materials The overall score is obtained through weighted calculation. ;
[0014] N2: When When the mixing uniformity is determined to meet the standard, a stop-mixing signal is generated and then transmitted to the adjustment module.
[0015] Preferably, the material feeding and dispensing assembly includes multiple first electric push cylinders respectively installed at the front and rear ends of the hot material storage bin. Three first electric push cylinders at the same end are installed in a group on both sides of the hot material storage bin. A first crank connecting rod is connected to the output shaft of the first electric push cylinder. The other ends of the first crank connecting rods at both ends are horizontally connected to a first rotating door. Both ends of the multiple first rotating doors are rotatably connected to the hot material storage bin corresponding to the material feeding port, and the multiple first rotating doors are sealed in cooperation with the corresponding material feeding port.
[0016] Preferably, a second electric pusher cylinder is installed on both sides of the fine aggregate weighing hopper and the coarse aggregate weighing hopper, and a horizontal discharge port is opened at the lower end of the fine aggregate weighing hopper and the coarse aggregate weighing hopper. A second crank connecting rod is connected to the output shaft of the second electric pusher cylinder, and the other ends of the two second crank connecting rods on the same side are horizontally connected to a second rotating door. The two second rotating doors are rotatably connected to the fine aggregate weighing hopper and the coarse aggregate weighing hopper respectively with the two discharge ports, and the two second rotating doors are sealed with the corresponding discharge ports.
[0017] Preferably, the ingredient mixing assembly includes support frames installed on both sides of the mixing pot. Two load protectors are longitudinally installed on the upper ends of the support frames on both sides. A reducer is connected to one load protector via a connecting pipe. A second motor is installed on the upper end of the reducer. The output shaft of the second motor is connected to the drive shaft of the reducer via a coupling. A connecting shaft is connected to the driven shaft of the reducer. The connecting shaft is placed inside the connecting pipe and rotates. The other end of the connecting shaft is connected to a rotating shaft via a flange. The rotating shaft is laterally connected to the inside of the mixing pot. Multiple stirring blades are sequentially installed on the two rotating shafts, and both ends of the two stirring blades are placed inside adjacent load protectors and rotate.
[0018] Preferably, the upper end of the mixing pot is provided with a powder weighing hopper and an asphalt weighing hopper on both sides respectively. The lower end of the powder weighing hopper is connected to a powder conveying pipe laterally. The other end of the powder conveying pipe is placed inside the mixing pot, and a discharge pipe is installed below the other end of the powder conveying pipe. A powder conveying screw is rotatably connected to the powder conveying pipe laterally, and a support plate is installed below the other end of the powder conveying pipe. The rear end of the support plate is installed on the inner wall of the mixing pot. A first motor is provided at one end of the powder conveying screw, and the output end of the first motor is connected to the powder conveying screw through a coupling.
[0019] Preferably, the lower end of the asphalt weighing hopper is connected to a U-shaped asphalt spraying pipe, one side of the asphalt spraying pipe is placed inside the mixing pot, and inverted J-shaped spray pipes are equidistantly connected to the asphalt spraying pipe. The spray pipes are placed inside the mixing pot, and two valves are installed on the asphalt spraying pipe, both of which are located outside the mixing pot.
[0020] Preferably, a third electric pusher cylinder is installed on each side of the mixing pot, and a third crank connecting rod is connected to the output shaft of the third electric pusher cylinder. The other ends of the two third crank connecting rods are horizontally connected to a third rotating door. The third rotating door is rotatably connected to the lower end of the two support frames, and the third rotating door can cooperate with the discharge port to seal.
[0021] Preferably, the method of use includes the following steps:
[0022] Q1: The material is fed through the first rotating door, so that the coarse aggregate falls into the coarse aggregate weighing hopper and the fine aggregate falls into the fine aggregate weighing hopper; after weighing, the coarse aggregate falls into the mixing pot, and at the same time the powder conveying screw rotates to send the powder into the mixing pot. The asphalt is sprayed into the mixing pot through the valve on the asphalt spraying pipe, and the second motor performs preliminary mixing.
[0023] Q2: During the mixing process, the analysis module dynamically calculates the actual asphalt feed rate, actual aggregate feed rate, and actual mixing speed based on the reference humidity, reference temperature, and experimental fitting influence coefficient. Based on the actual mixing speed, the adjustment module adjusts the speed of the second motor in real time. The analysis module continuously obtains laboratory quantitative index scores, production process parameter scores, and visual observation scores to calculate a comprehensive uniformity score. When the comprehensive uniformity score exceeds the set value, it is determined that the mixing is uniform, allowing the fine aggregate to fall into the mixing pot.
[0024] Q3: After the mixture is determined to be evenly mixed again, the third rotating door opens to discharge the mixture.
[0025] The beneficial effects of this invention are:
[0026] 1. The combination of fine aggregate weighing hopper, coarse aggregate weighing hopper, and second rotating gate facilitates the sequential entry of fine and coarse aggregates into the mixing pot for mixing. It also facilitates step-by-step mixing with asphalt spraying pipe and powder conveying pipe, thereby ensuring that the asphalt fully coats both coarse and fine aggregates and improving the uniformity of asphalt coating. The combination of the second motor and mixing blades facilitates efficient mixing of the asphalt mixture, improving the mixing efficiency of the asphalt mixture. This structure solves the problem of low production efficiency in existing asphalt mixture mixing devices.
[0027] 2. The analysis module collects ambient temperature and humidity data in real time, and dynamically calculates the actual amount of asphalt and aggregate to be fed into the mixture by combining preset benchmark parameters and experimental fitting influence coefficients. It also generates a corresponding mixing speed adjustment signal to effectively compensate for fluctuations in material properties caused by environmental changes, ensuring that a stable mix ratio can be maintained under different temperature and humidity conditions, thereby improving the mixing accuracy and overall quality of the asphalt mixture. The adjustment module adjusts the speed of the mixing device in real time according to the speed adjustment signal output by the analysis module, so that it can adapt to the mixing requirements under different temperature and humidity conditions. This not only helps to improve the uniformity of mixing, but also avoids energy waste or equipment overload caused by improper mixing speed, realizing intelligent and energy-saving operation of the mixing process.
[0028] 3. By combining laboratory quantitative indicators, production process parameters, and visual observation indicators, a comprehensive mixing uniformity evaluation model is constructed to objectively and quantitatively reflect the uniformity of the mixture. When the preset standard is reached, a stop-mixing signal is automatically issued to effectively avoid insufficient or excessive mixing and ensure the quality consistency of each batch of mixture. Attached Figure Description
[0029] Figure 1 This is a three-dimensional schematic diagram of the overall structure proposed in this invention;
[0030] Figure 2 This is a schematic diagram of the main structure proposed in this invention from another perspective;
[0031] Figure 3 This is a cross-sectional view of the overall structure proposed in this invention;
[0032] Figure 4 This is a schematic diagram of the material distribution structure proposed in this invention;
[0033] Figure 5 This is a three-dimensional schematic diagram of the stirring structure proposed in this invention;
[0034] Figure 6 This is a schematic diagram of the powder feeding structure proposed in this invention;
[0035] Figure 7 This is a schematic diagram of the connection structure of the asphalt mixer proposed in this invention;
[0036] Figure 8 This is a flowchart of the system proposed in this invention.
[0037] In the diagram, 1. Hot aggregate storage bin; 2. Fine aggregate weighing hopper; 3. Coarse aggregate weighing hopper; 4. Mixing pot; 5. First electric pusher cylinder; 6. First crank connecting rod; 7. First rotating door; 8. Second electric pusher cylinder; 9. Second crank connecting rod; 10. Second rotating door; 11. Asphalt weighing hopper; 12. Asphalt spraying pipe; 13. Valve; 14. First motor; 15. Powder weighing hopper; 16. Powder conveying pipe; 17. Powder conveying screw; 18. Support frame; 19. Second motor; 20. Load protector; 21. Reducer; 22. Third electric pusher cylinder; 23. Third crank connecting rod; 24. Third rotating door; 25. Mixing blades; 26. Mounting frame. Detailed implementation method.
[0038] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0039] Example 1: See Figures 1 to 7This invention discloses an efficient asphalt mixture mixing device and its usage method, comprising a hot aggregate storage silo 1, a fine aggregate weighing hopper 2, a coarse aggregate weighing hopper 3, a mixing pot 4, and a mounting frame 26. The hot aggregate storage silo 1 is internally divided into multiple storage areas by multiple partition plates, and the bottom of the hot aggregate storage silo 1 has longitudinal discharge ports corresponding to the multiple storage areas. The fine aggregate weighing hopper 2 and the coarse aggregate weighing hopper 3 are respectively located on both sides below the discharge ports of the hot aggregate storage silo 1. The mixing pot 4 is placed directly below the fine aggregate weighing hopper 2 and the coarse aggregate weighing hopper 3, and the mixing pot 4... A discharge port is provided at the bottom. The mounting frame 26 is installed at the rear end of the hot aggregate storage bin 1, the fine aggregate weighing hopper 2, the coarse aggregate weighing hopper 3, and the mixing pot 4. A material distribution assembly is installed on the coarse aggregate weighing hopper 3, the fine aggregate weighing hopper 2, and the hot aggregate storage bin 1. A batching and mixing assembly is installed on the mixing pot 4. The cooperation between the material distribution assembly and the batching and mixing assembly facilitates efficient mixing and blending of the asphalt mixture. The material distribution assembly includes multiple first electric push cylinders 5 installed at the front and rear ends of the hot aggregate storage bin 1, with three first electric push cylinders 5 on the same end forming a group. Installed on both sides of the hot material storage silo 1, the output shaft of the first electric pusher cylinder 5 is connected to a first crank connecting rod 6. The other ends of both ends of the first crank connecting rod 6 are horizontally connected to a first rotating door 7. Both ends of the multiple first rotating doors 7 are rotatably connected to the hot material storage silo 1 corresponding to the discharge ports, and the multiple first rotating doors 7 are sealed in accordance with the corresponding discharge ports. The cooperation between the first electric pusher cylinder 5 and the first rotating doors 7 facilitates the control of the separation of coarse and fine aggregates. Second electric pusher cylinders 8 are installed on both sides of the fine aggregate weighing hopper 2 and the coarse aggregate weighing hopper 3. Both the fine aggregate weighing hopper 2 and the coarse aggregate weighing hopper 3 have horizontal discharge ports at their lower ends. The output shaft of the second electric pusher cylinder 8 is connected to the second crank connecting rod 9. The other ends of the two second crank connecting rods 9 on the same side are horizontally connected to the second rotating door 10. The two second rotating doors 10 are rotatably connected to the fine aggregate weighing hopper 2 and the coarse aggregate weighing hopper 3 respectively in cooperation with the two discharge ports. The two second rotating doors 10 are sealed in cooperation with the corresponding discharge ports. The cooperation between the second electric pusher cylinder 8 and the second rotating door 10 facilitates the control of the discharge of coarse and fine aggregates.
[0040] In this invention, the ingredient mixing assembly includes support frames 18 installed on both sides of the mixing pot 4. Two load protectors 20 are longitudinally mounted on the upper ends of the support frames 18 on both sides. One load protector 20 is connected to a reducer 21 via a connecting pipe. A second motor 19 is installed on the upper end of the reducer 21. The output shaft of the second motor 19 is connected to the drive shaft of the reducer 21 via a coupling. A connecting shaft is connected to the driven shaft of the reducer 21. The connecting shaft rotates within the connecting pipe, and the other end of the connecting shaft is connected to a rotating shaft via a flange. The rotating shaft is laterally rotatably connected inside the mixing pot 4. The two rotating shafts... Multiple mixing blades 25 are sequentially installed on the upper part of the mixing pot 4, with both ends of two mixing blades 25 placed in adjacent load-bearing protectors 20 for rotation. The second motor 19 facilitates the control of the rotating shaft to drive the mixing blades 25 to rotate and mix the asphalt mixture. Powder weighing hoppers 15 and asphalt weighing hoppers 11 are respectively provided on both sides of the upper end of the mixing pot 4. A powder conveying pipe 16 is horizontally connected to the lower end of the powder weighing hopper 15. The other end of the powder conveying pipe 16 is placed inside the mixing pot 4, and a discharge pipe is installed below the other end of the powder conveying pipe 16. A powder conveying screw 1 is horizontally rotatably connected inside the powder conveying pipe 16. 7. A support plate is installed below the other end of the powder conveying pipe 16. The rear end of the support plate is installed on the inner wall of the mixing pot 4. A first motor 14 is provided at one end of the powder conveying screw 17. The output end of the first motor 14 is connected to the powder conveying screw 17 through a coupling. The first motor 14 facilitates the control of the rotation of the powder conveying screw 17, thereby controlling the amount of powder fed. A U-shaped asphalt spraying pipe 12 is connected to the lower end of the asphalt weighing hopper 11. One side of the asphalt spraying pipe 12 is placed inside the mixing pot 4, and inverted J-shaped spray pipes are equidistantly connected to the asphalt spraying pipe 12. The spray pipes are placed inside the mixing pot 4. Two valves 13 are installed on the asphalt spraying pipe 12. Both valves 13 are located on the outside of the mixing pot 4. The valves 13 facilitate the control of asphalt entering the mixing pot 4. A third electric pusher cylinder 22 is installed on each side of the mixing pot 4. A third crank connecting rod 23 is connected to the output shaft of the third electric pusher cylinder 22. The other ends of the two third crank connecting rods 23 are horizontally connected to a third rotating door 24. The third rotating door 24 is rotatably connected to the lower end of the two support frames 18. The third rotating door 24 can cooperate with the discharge port to seal. The third electric pusher cylinder 22 facilitates the control of the opening of the third rotating door 24 for material discharge.
[0041] Working principle: When using this invention, firstly, all electrical equipment of the device needs to be connected to the power supply. Then, fine aggregate is added to the three storage areas on one side of the hot material storage bin 1, coarse aggregate is added to the storage area on the other side of the hot material storage bin 1, powder is added to the powder weighing hopper 15, and asphalt is added to the asphalt weighing hopper 11 to complete the preliminary preparation. After preparation, the coarse and fine aggregate feeding stage begins. First, the multiple first electric push cylinders 5 on the side of the hot material storage bin 1 corresponding to the coarse aggregate storage area are activated. The first electric push cylinders 5 drive the first crank connecting rod 6, causing the corresponding first rotating door 7 to rotate and open the feeding port at the bottom of the hot material storage bin 1, allowing the coarse aggregate to fall into the coarse aggregate weighing hopper 3 below to wait for discharge. Similarly, the first electric push cylinder 5 on the side of the hot material storage bin 1 corresponding to the fine aggregate storage area is activated, controlling the corresponding first rotating door 7 to open the feeding port, allowing the fine aggregate to enter the fine aggregate weighing hopper 2 to wait for discharge.
[0042] Next, the asphalt mixture is initially mixed. First, the second electric pusher cylinders 8 installed on both sides of the coarse aggregate weighing hopper 3 are started. The second electric pusher cylinders 8 drive the second crank connecting rod 9, causing the corresponding second rotating door 10 to rotate and open the discharge port at the lower end of the coarse aggregate weighing hopper 3, allowing the coarse aggregate to fall into the mixing pot 4 below. At the same time, the first motor 14 on one side of the powder weighing hopper 15 is started. The first motor 14 drives the powder conveying screw 17 in the powder conveying pipe 16 to rotate through the coupling, controlling the powder to enter the mixing pot 4 through the powder conveying pipe 16 and the discharge pipe at the end. At the same time, the two valves 13 on the asphalt spraying pipe 12 at the lower end of the asphalt weighing hopper 11 are opened, allowing the asphalt to be sprayed into the mixing pot 4 through the inverted J-shaped spray pipe on the asphalt spraying pipe 12. After the coarse aggregate, powder, and asphalt have all entered the mixing pot 4, the second motor 19 on the support frame 18 on one side of the mixing pot 4 is started. The output shaft of the second motor 19 is connected to the reducer 21 through the coupling. The reducer 21 drives the internal rotation of the mixing pot 4 through the connecting shaft. As the shaft rotates, multiple mixing blades 25 on the shaft rotate accordingly, stirring the mixture of coarse aggregate, powder, and asphalt in the pot. After a period of stirring, the fine aggregate is added and the stirring continues. The second electric push cylinders 8 on both sides of the fine aggregate weighing hopper 2 are activated. The second electric push cylinders 8 drive the second crank connecting rod 9, causing the corresponding second rotating door 10 to open the discharge port of the fine aggregate weighing hopper 2. The fine aggregate falls into the mixing pot 4 and continues to mix with the initially stirred mixture in the pot under the action of the mixing blades 25. When the asphalt mixture composed of coarse aggregate, fine aggregate, powder, and asphalt is completely and evenly mixed, the third electric push cylinders 22 on both sides of the mixing pot 4 are activated. The third electric push cylinders 22 drive the third crank connecting rod 23, causing the third rotating door 24 to rotate and open the discharge port at the bottom of the mixing pot 4, discharging the mixed asphalt mixture. After all the material is discharged, the power supply to all electrical equipment is disconnected and the machine is turned off, completing one complete asphalt mixture mixing operation.
[0043] Example 2: See Figure 8The control box of the stirring device is equipped with intelligent control components, which include an analysis module and an adjustment module.
[0044] The analysis module receives and preprocesses the acquired environmental temperature and humidity and mixing parameter data; it analyzes the deviations in asphalt feed rate, aggregate feed rate, and mixing speed caused by changes in temperature and humidity, and adjusts the mixing speed according to the deviations, generating a speed adjustment signal and transmitting it to the adjustment module; it quantifies the mixing uniformity through laboratory quantitative index scores, production process parameter index scores, and visual observation index scores, and generates a stop mixing signal when the mixing uniformity reaches the set value, transmitting the stop mixing signal to the adjustment module.
[0045] Preprocessing: The collected data is sorted according to the collection time, and corresponding items collected at the same time are processed. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time;
[0046] Humidity and temperature data corresponding to standard environments are used as the baseline humidity. and temperature data The reference asphalt feed rate corresponding to the reference humidity and reference temperature is: The actual amount of asphalt fed into the feed The data is acquired and preprocessed. Humidity correction factor Temperature correction factor , and These are the humidity influence coefficient and temperature influence coefficient, respectively, for the experimental fitting.
[0047] The reference stirring speed corresponding to the reference humidity and reference temperature is Actual stirring speed Temperature and humidity composite correction coefficient , and These are the influence coefficients of humidity and temperature on stirring speed, respectively, as fitted in the experiment.
[0048] If the baseline aggregate feeding amount is The actual amount of aggregate fed in , Aggregate density at baseline humidity, actual humidity The aggregate density below , Density-humidity influence coefficient;
[0049] Using a fixed asphalt temperature as the baseline, multiple experimental groups with different humidity levels were set up. All other process parameters were kept consistent with the baseline conditions, and only the asphalt feed rate was adjusted to achieve the baseline coating effect. The humidity levels for each group were recorded. Corresponding asphalt feeding amount , The sequence number of the data group; and the recorded data are substituted into the formula. For multiple sets of data By performing a linear fit, the slope obtained is... Using the same method, with the aggregate moisture content fixed as the baseline moisture content, multiple experimental groups with different asphalt temperatures were set up to obtain the temperature influence coefficient. The specific value; with the asphalt temperature fixed as the reference temperature, multiple experimental groups with different humidity levels were set up to obtain the influence coefficient of humidity on the stirring speed. The specific value; with the aggregate moisture content fixed as the baseline moisture content, multiple experimental groups with different asphalt temperatures were set up to obtain the influence coefficient of temperature on the mixing speed. The specific value; select aggregates consistent with production, set up multiple experimental groups with different moisture contents, and obtain the density-moisture influence coefficient. ;
[0050] After acquiring the current humidity and temperature data, the data is preprocessed. The preprocessed data is then substituted with the baseline temperature and humidity data into the corresponding calculation formula to calculate the corresponding actual feed rate. , And after generating the speed control signal, the stirring speed will be affected by changes in temperature and humidity data. The speed control signal is transmitted to the regulating module;
[0051] After receiving the speed control signal, the adjustment module adjusts the stirring speed accordingly. Adjust the stirring speed to .
[0052] Obtain laboratory quantitative index scores that reflect the inherent homogeneity of materials. The production process parameter scores that reflect the stability of the stirring process. And the scores of intuitive observation indicators reflecting the apparent uniformity of materials The overall score is obtained through weighted calculation. ,when When the mixing uniformity is determined to meet the standard, a stop-stirring signal is generated and then transmitted to the adjustment module.
[0053] After receiving the stop stirring signal, the adjustment module controls the second motor 19 to stop rotating, thus stopping the stirring operation;
[0054] Consistency score of gradation The average deviation of the passing rate of each sieve aperture in multiple sample groups , Number of sample groups For the key sieve aperture number, For the first Group of samples The throughput of each sieve aperture For the design gradation of the first Passing rate of each sieve aperture, gradation deviation penalty coefficient Take experience points. Asphalt content deviation score , The average deviation of asphalt content, and the coefficient of variation of asphalt content. Asphalt deviation penalty coefficient Take experience points. Marshall stability and dispersion score , The stability variation coefficient and the stability dispersion penalty coefficient are respectively. Take experience points. ;
[0055] Stirring power fluctuation score , Here, represents the coefficient of variation of stirring power and the penalty coefficient for power fluctuation. Take experience points. Material temperature consistency score Maximum temperature deviation at multiple points Temperature deviation penalty coefficient Take experience points. ; Mixing time matching score , and These represent the actual mixing time and the theoretical mixing time, respectively, along with the time deviation penalty coefficient. Take experience points. ;
[0056] ; The score for appearance consistency is based on the percentage of areas with white spots and asphalt blocks that appear during the mixing process; Looseness score is determined by clumping rate, which is equal to the ratio of clumping mass to total sample mass. The unloading smoothness score is based on the proportion of the unloading interval time to the total time.
[0057] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.
Claims
1. A high-efficiency asphalt mixture mixing device, comprising a hot aggregate storage bin (1), a fine aggregate weighing hopper (2), a coarse aggregate weighing hopper (3), a mixing pot (4), and a mounting frame (26), characterized in that: The interior of the hot material storage silo (1) is divided into multiple storage areas by multiple partition plates, and the bottom of the hot material storage silo (1) is provided with longitudinal discharge ports in conjunction with the multiple storage areas. The fine aggregate weighing hopper (2) and the coarse aggregate weighing hopper (3) are respectively located on both sides below the discharge port of the hot material storage silo (1). The mixing pot (4) is placed directly below the fine aggregate weighing hopper (2) and the coarse aggregate weighing hopper (3), and the bottom of the mixing pot (4) is provided with a discharge port. The mounting frame (26) is installed at the rear end of the hot material storage silo (1), the fine aggregate weighing hopper (2), the coarse aggregate weighing hopper (3) and the mixing pot (4). The coarse aggregate weighing hopper (3), the fine aggregate weighing hopper (2) and the hot material storage silo (1) are equipped with a material distribution component. The mixing pot (4) is equipped with a batching and mixing component. The control box of the stirring device is equipped with intelligent control components, which include an analysis module. The analysis module receives and preprocesses the acquired environmental temperature and humidity and mixing parameter data; it analyzes the deviations in asphalt feed rate, aggregate feed rate, and mixing speed caused by changes in temperature and humidity, and adjusts the mixing speed according to the deviations, generating a speed adjustment signal and transmitting it to the adjustment module; it quantifies the mixing uniformity through laboratory quantitative index scores, production process parameter index scores, and visual observation index scores, and generates a stop mixing signal when the mixing uniformity reaches the set value, transmitting the stop mixing signal to the adjustment module.
2. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The steps for the analysis module to perform material feeding deviation analysis are as follows: M1: Humidity based on standard environmental humidity and temperature data. and temperature data The reference asphalt feed rate corresponding to the reference humidity and reference temperature is: The actual amount of asphalt fed into the feed The data is acquired and preprocessed; the actual amount of asphalt fed is... , This is the humidity correction factor. This is the temperature correction factor; the reference stirring speed corresponding to the reference humidity and reference temperature is... Actual stirring speed , This is a combined temperature and humidity correction factor; the baseline aggregate feed rate is... The actual amount of aggregate fed in , Aggregate density at baseline humidity Actual humidity The aggregate density below; M2: After acquiring the current humidity and temperature data, the acquired data is preprocessed, and the preprocessed data is substituted into the corresponding calculation formula along with the reference temperature and humidity data to calculate the corresponding actual feed rate. , And after generating the speed control signal, the stirring speed will be affected by changes in temperature and humidity data. The speed control signal is transmitted to the regulating module.
3. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The steps for the analysis module to perform mixing uniformity analysis are as follows: N1: A laboratory quantitative index score reflecting the inherent homogeneity of materials. The production process parameter scores that reflect the stability of the stirring process. And the scores of intuitive observation indicators reflecting the apparent uniformity of materials The overall score is obtained through weighted calculation. ; N2: When When the mixing uniformity is determined to meet the standard, a stop-mixing signal is generated and then transmitted to the adjustment module.
4. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The feeding and dispensing assembly includes multiple first electric push cylinders (5) installed at the front and rear ends of the hot material storage chamber (1). Three first electric push cylinders (5) at the same end are installed on both sides of the hot material storage chamber (1). A first crank connecting rod (6) is connected to the output shaft of the first electric push cylinder (5). The other ends of the first crank connecting rods (6) on the same side at both ends are horizontally connected to a first rotating door (7). Both ends of the multiple first rotating doors (7) are rotatably connected to the hot material storage chamber (1) corresponding to the feeding port, and the multiple first rotating doors (7) are sealed in cooperation with the corresponding feeding port.
5. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The fine aggregate weighing hopper (2) and the coarse aggregate weighing hopper (3) are each equipped with a second electric pusher cylinder (8) on both sides. The lower ends of the fine aggregate weighing hopper (2) and the coarse aggregate weighing hopper (3) are each provided with a horizontal discharge port. The output shaft of the second electric pusher cylinder (8) is connected to a second crank connecting rod (9). The other ends of the two second crank connecting rods (9) on the same side are connected horizontally to a second rotating door (10). The two second rotating doors (10) are respectively connected to the two discharge ports and rotated on the fine aggregate weighing hopper (2) and the coarse aggregate weighing hopper (3). The two second rotating doors (10) are respectively connected to the corresponding discharge ports for sealing.
6. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The mixing assembly includes support brackets (18) installed on both sides of the mixing pot (4). Two load protectors (20) are installed longitudinally on the upper ends of the support brackets (18) on both sides. One load protector (20) is connected to a reducer (21) through a connecting pipe. A second motor (19) is installed on the upper end of the reducer (21). The output shaft of the second motor (19) is connected to the drive shaft of the reducer (21) through a coupling. A connecting shaft is connected to the driven shaft of the reducer (21). The connecting shaft is placed inside the connecting pipe and rotates. The other end of the connecting shaft is connected to a rotating shaft through a flange. The rotating shaft is connected to the interior of the mixing pot (4) for transverse rotation. Multiple stirring blades (25) are installed on the two rotating shafts in sequence. Both ends of the two stirring blades (25) are placed inside the adjacent load protectors (20) and rotate.
7. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The upper end of the mixing pot (4) is provided with a powder weighing hopper (15) and an asphalt weighing hopper (11) respectively. The lower end of the powder weighing hopper (15) is connected to a powder conveying pipe (16). The other end of the powder conveying pipe (16) is placed inside the mixing pot (4), and a discharge pipe is installed below the other end of the powder conveying pipe (16). A powder conveying screw (17) is rotatably connected inside the powder conveying pipe (16), and a support plate is installed below the other end of the powder conveying pipe (16). The rear end of the support plate is installed on the inner wall of the mixing pot (4). A first motor (14) is installed at one end of the powder conveying pipe (16), and the output end of the first motor (14) is connected to the powder conveying screw (17) through a coupling.
8. The high-efficiency mixing device for asphalt mixture according to claim 5, characterized in that: The lower end of the asphalt weighing hopper (11) is connected to a U-shaped asphalt spraying pipe (12). One side of the asphalt spraying pipe (12) is placed inside the mixing pot (4), and inverted J-shaped spray pipes are connected at equal intervals on the asphalt spraying pipe (12). The spray pipes are placed inside the mixing pot (4), and two valves (13) are installed on the asphalt spraying pipe (12). Both valves (13) are placed outside the mixing pot (4).
9. The high-efficiency mixing device for asphalt mixture according to claim 1, characterized in that: The mixing pot (4) is equipped with a third electric pusher cylinder (22) on both sides. The output shaft of the third electric pusher cylinder (22) is connected to a third crank connecting rod (23). The other ends of the two third crank connecting rods (23) are horizontally connected to a third rotating door (24). The third rotating door (24) is rotatably connected to the lower end of the two support brackets (18), and the third rotating door (24) can cooperate with the discharge port to seal.
10. A method of using the high-efficiency asphalt mixture mixing device as described in any one of claims 1-9, characterized in that: The usage method includes the following steps: Q1: The coarse aggregate is fed into the coarse aggregate weighing hopper (3) and the fine aggregate is fed into the fine aggregate weighing hopper (2) through the first rotating door (7); after weighing, the coarse aggregate falls into the mixing pot (4), and at the same time the powder conveying screw (17) rotates to send the powder into the mixing pot (4). The asphalt is sprayed into the mixing pot (4) through the valve (13) on the asphalt spraying pipe (12), and the second motor (19) performs preliminary mixing. Q2: During the mixing process, the analysis module dynamically calculates the actual asphalt feed amount, actual aggregate feed amount and actual mixing speed based on the reference humidity, reference temperature and experimental fitting influence coefficient, and adjusts the speed of the second motor (19) in real time based on the actual mixing speed through the adjustment module; the analysis module continuously obtains the laboratory quantitative index score, production process parameter score and intuitive observation score to calculate the comprehensive uniformity score. When the comprehensive uniformity score exceeds the set value, it is determined that the mixing is uniform; so that the fine aggregate falls into the mixing pot (4). Q3: After the mixture is determined to be evenly mixed again, the third rotating door (24) is opened to discharge the mixture.