Environment-friendly asphalt release agent automatic production device

Abstract

The utility model relates to an environmental protection type asphalt release agent automation production device, it includes mixing bucket, collecting bucket, still includes multistage filtering device, multistage filtering device is passed through feed pipe with the feed port intercommunication of mixing bucket, be provided with stirring device in mixing bucket, mixing bucket outside is equipped with jacket heating layer, the feed end of dispersing homogenizer pump is connected with the discharge port of mixing bucket through first conveying pipe, and the discharge end of dispersing homogenizer pump is connected with collecting bucket through second conveying pipe. The utility model has the effect that waste oil and fat depth treatment and stable emulsification, guarantee product stability and improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of asphalt release agent production technology, and in particular to an environmentally friendly automated production device for asphalt release agents. Background Technology

[0002] During asphalt pavement construction, high-temperature asphalt mixtures tend to adhere to the contact surfaces of paving equipment, compaction machinery, transport vehicles, and auxiliary tools. This not only affects construction efficiency but also leads to equipment wear and pavement quality deviations due to cleaning difficulties. Therefore, asphalt release agents are needed to avoid these problems. Currently, the selection and production of release agents directly affect construction costs, environmental friendliness, and project quality. Developing efficient, environmentally friendly, and low-cost asphalt release agents and supporting production equipment has become an industry requirement.

[0003] In existing asphalt pavement construction technologies, the raw materials for asphalt release agents are significantly limited. Directly using new vegetable oils (such as peanut oil) as release agents can achieve the desired release effect, but the raw material cost is high, it consumes valuable food resources, and it has poor environmental performance. Simply diluting it with water can easily lead to rapid stratification due to the lack of emulsification and dispersion processes, resulting in unstable release effects. Some processes have tried using waste kitchen oil, but due to the lack of targeted purification treatment, impurities are not completely removed, and the mixing and homogenization effects of the production equipment are poor, making it difficult to form a stable emulsion. This results in large fluctuations in the quality of the release agent, still posing environmental risks. At the same time, the production efficiency is low and cannot meet the needs of large-scale pavement construction. Utility Model Content

[0004] To address the problems of insufficient purity, poor emulsification stability, and low production efficiency in existing waste oil treatment technologies, the purpose of this utility model is to provide an environmentally friendly automated production device for asphalt release agents. Through multi-stage deep purification, precise emulsification mixing, and automated control, it achieves deep treatment and stable emulsification of waste kitchen oil, thereby ensuring product stability and improving production efficiency.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] An environmentally friendly automated production device for asphalt release agent includes a mixing tank, a collection tank, and a multi-stage filtration system.

[0007] The multi-stage filtration device is connected to the inlet of the mixing tank via a feed pipe;

[0008] The mixing tank is equipped with a stirring device, and the outside of the mixing tank is equipped with a jacketed heating layer;

[0009] The discharge port of the mixing tank is connected to the feed end of the dispersing and homogenizing pump through the first conveying pipe, and the discharge end of the dispersing and homogenizing pump is connected to the collection tank through the second conveying pipe.

[0010] The above technical solutions have enabled an integrated automated process for asphalt release agent production, from raw material pretreatment to finished product collection. The coordinated operation of multi-stage filtration devices and mixing and homogenizing equipment ensures continuous material processing within a closed system, reducing manual intervention, improving production efficiency, and preventing material contamination.

[0011] As a further technical solution of this utility model: the multi-stage filtration device includes a self-cleaning scraper filter, a disc centrifuge and a molecular sieve dehydration tower connected in series;

[0012] The inlet of the self-cleaning scraper filter is connected to a waste oil source, and the outlet is connected to the inlet of the disc centrifuge via a pipe.

[0013] The light phase outlet of the disc centrifuge is connected to the feed inlet of the molecular sieve dehydration tower, and the heavy phase outlet is connected to a waste liquid collection device.

[0014] The outlet of the molecular sieve dehydration tower is connected to the inlet of the mixing tank.

[0015] Through the above technical solution, the multi-stage filtration device adopts a three-stage series processing structure. The self-cleaning scraper filter can efficiently remove large particulate impurities, the disc centrifuge realizes the precise separation of oil phase, water phase and heavy impurities, and the molecular sieve dehydration tower deeply removes residual moisture. The three steps work together to improve the purity of raw materials and provide high-quality basic materials for subsequent mixing and homogenization.

[0016] As a further technical solution of this utility model: the multi-stage filtration device also includes a first buffer tank and a second buffer tank.

[0017] The first buffer tank is disposed between the self-cleaning scraper filter and the disc centrifuge to balance flow fluctuations;

[0018] The second buffer tank is located between the disc centrifuge and the molecular sieve dehydration tower and is used to store intermediate products;

[0019] Both the first and second buffer tanks are equipped with level sensors and temperature control devices.

[0020] Through the above technical solutions, the first buffer tank balances the flow fluctuations of the filtration and centrifugation processes, avoiding a decrease in separation efficiency of the centrifuge due to unstable feed; the second buffer tank stabilizes the storage and temperature of intermediate products, ensuring constant feed conditions for the molecular sieve dehydration tower. The combination of the two enhances the operational stability of the multi-stage filtration system and reduces product quality deviations caused by fluctuations in operating conditions.

[0021] As a further technical solution of this utility model: the stirring device includes a drive motor, a main stirring shaft and multiple layers of blades;

[0022] The drive motor is mounted on the top of the mixing tank, and its output shaft is connected to the main stirring shaft;

[0023] The multi-layered blades are spaced apart along the axial direction of the main stirring shaft.

[0024] Through the above technical solution, the drive motor of the stirring device drives the multi-layer blades to rotate at intervals along the axial direction. By utilizing the synergistic effect of the blades at different positions, the material in the mixing tank is stirred in all directions, avoiding local material retention, improving the overall mixing uniformity, and laying a good foundation for subsequent homogenization treatment.

[0025] As a further technical solution of this utility model: the multi-layer blades include a first blade, a second blade and a third blade arranged from top to bottom along the main stirring shaft;

[0026] The first blade is used to scrape off the adhering material from the inner wall of the mixing tank;

[0027] The second blade is used to generate shear force to disperse oil phase droplets;

[0028] The third blade is used to propel the material to form an up-and-down circulating flow field within the mixing tank.

[0029] Through the above technical solution, the three layers of blades have a clear division of labor. The first blade prevents the material from sticking to the barrel wall, causing waste or deterioration. The second blade initially disperses the oil phase droplets through shearing force. The third blade pushes the material to form an up-and-down circulating flow field. The three work together to improve the mixing efficiency and ensure that the material is mixed evenly without dead corners in the barrel.

[0030] As a further technical solution of this utility model: the dispersion homogenizing pump adopts a three-stage high-shear structure, including three shearing units directly connected in series along the material flow direction.

[0031] Through the above technical solution, the three-stage series shearing unit of the dispersion homogenizing pump realizes the gradual dispersion and homogenization of materials. Through progressive shearing action, the particle size of oil phase droplets is gradually refined, the degree of material homogenization is improved, oil-water separation is effectively avoided, and the emulsification stability and coating uniformity of asphalt release agent are enhanced.

[0032] As a further technical solution of this utility model, it also includes a control system, which is electrically connected to the multi-stage filtration device, stirring device, jacketed heating layer, dispersion homogenizing pump, first buffer tank and second buffer tank, for realizing full-process automatic control.

[0033] Through the above technical solutions, the control system can perform coordinated control of multi-stage filtration, stirring, heating, homogenization and other equipment throughout the entire process. It can dynamically adjust the operating status of each device according to real-time parameters, realize the precision and automation of the production process, reduce human operation errors, and improve product quality consistency and production efficiency.

[0034] As a further technical solution of this utility model: both the mixing tank and the collecting tank are made of stainless steel.

[0035] The above technical solution uses stainless steel for the mixing tank and the collection tank, which can effectively resist the corrosion of asphalt release agent raw materials and finished products, avoid metal ion contamination of materials, and extend the service life of the equipment, meeting the requirements of industrial production for equipment material stability and material purity.

[0036] In summary, this utility model has at least one of the following beneficial technical effects:

[0037] 1. This utility model discloses an environmentally friendly automated production device for asphalt release agent. Through an automated linkage structure integrating a mixing tank, a collection tank, and a multi-stage filtration device, it realizes continuous production of asphalt release agent from raw material pretreatment to finished product collection, reduces manual intervention, improves production efficiency, and avoids material contamination.

[0038] 2. This utility model discloses an environmentally friendly automated production device for asphalt release agent, which achieves precise removal of impurities and moisture from raw materials through a three-stage series treatment of multi-stage filtration devices and flow and temperature control of buffer tanks, thereby improving the purity of feed and the operational stability of the filtration system.

[0039] 3. This utility model discloses an environmentally friendly automated production device for asphalt release agents. Through the coordinated operation of the layered paddles of the stirring device and the three-stage shearing of the dispersing and homogenizing pump, the material is processed step by step from initial mixing to fine homogenization, which refines the droplet size of the oil phase and improves the emulsification stability and uniformity of the product. Attached Figure Description

[0040] Figure 1 This is a front view of an environmentally friendly automated production device for asphalt release agent according to this utility model.

[0041] Figure 2 for Figure 1 Cross-sectional view of the stirring device inside the mixing tank.

[0042] Reference numerals: 1. Mixing tank; 2. Collection tank; 3. Multi-stage filtration device; 30. Feed pipe; 31. Self-cleaning scraper filter; 32. Disc centrifuge; 321. Light phase outlet; 322. Heavy phase outlet; 33. Molecular sieve dehydration tower; 4. Stirring device; 41. Drive motor; 42. Main stirring shaft; 43. Multi-layer impeller; 431. First impeller; 432. Second impeller; 433. Third impeller; 5. Jacketed heating layer; 6. Dispersion and homogenization pump; 7. First conveying pipe; 8. Second conveying pipe; 9. First buffer tank; 10. Second buffer tank; 11. Liquid level sensor; 12. Temperature control device. Detailed Implementation

[0043] 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.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Example 1:

[0047] Reference Figure 1 This utility model discloses an environmentally friendly automated production device for asphalt release agent, comprising a mixing tank 1, a collection tank 2, and a multi-stage filtration device 3, wherein both the mixing tank 1 and the collection tank 2 are made of stainless steel. The multi-stage filtration device 3 is connected to the inlet of the mixing tank 1 via a feed pipe 30. The mixing tank 1 is equipped with a stirring device 4 inside and a jacketed heating layer 5 on the outside. The outlet of the mixing tank 1 is connected to the inlet of a dispersion homogenizing pump 6 via a first conveying pipe 7, and the outlet of the dispersion homogenizing pump 6 is connected to the collection tank 2 via a second conveying pipe 8.

[0048] Reference Figure 1The multi-stage filtration device 3 includes a self-cleaning scraper filter 31, a disc centrifuge 32, and a molecular sieve dehydration tower 33 connected in series. The self-cleaning scraper filter 31 is connected to a waste oil source. The light phase outlet 321 of the disc centrifuge 32 is connected to the molecular sieve dehydration tower 33, and the heavy phase outlet 322 is connected to a waste liquid collection device. The discharge port of the molecular sieve dehydration tower 33 is connected to a mixing tank 1. The multi-stage filtration device 3 also includes a first buffer tank 9 and a second buffer tank 10, which are respectively set between the self-cleaning scraper filter 31 and the disc centrifuge 32, and between the disc centrifuge 32 and the molecular sieve dehydration tower 33, and are both equipped with a liquid level sensor 11 and a temperature control device 12.

[0049] Reference Figure 2 The stirring device 4 includes a drive motor 41, a main stirring shaft 42, and multiple layers of impellers 43. The drive motor 41 is mounted on the top of the mixing tank 1 and connected to the main stirring shaft 42. The multiple layers of impellers 43 are spaced apart along the axial direction of the main stirring shaft 42, specifically including a first impeller 431, a second impeller 432, and a third impeller 433 from top to bottom, which are used to scrape off the adhering material on the tank wall, disperse oil droplets, and promote material circulation, respectively. Specifically, the first impeller 431 is preferably an anchor-type impeller, whose shape matches the curvature of the inner wall of the mixing tank 1, and achieves the scraping function by rotating close to the tank wall; the second impeller 432 is preferably a turbine-type impeller, which generates radial shear force through the high-speed rotation of multiple blades; the third impeller 433 is preferably a helical propeller, which promotes the axial flow of material through helical blades.

[0050] The dispersion homogenizing pump 6 employs a three-stage high-shear structure, comprising three directly connected shearing units arranged sequentially along the material flow direction. These three shearing units achieve stepwise refinement of material particle size through a synergistic design of "increasing tooth density + increasing rotational speed gradient," thus completing high-precision homogenization of the material. For example, the first-stage shearing unit is equipped with a coarse-tooth rotor-stator for initial crushing of agglomerated particles; the second-stage shearing unit is equipped with a medium-tooth rotor-stator for refining droplet size; and the third-stage shearing unit is equipped with a fine-tooth rotor-stator for achieving submicron-level homogenization distribution.

[0051] Reference Figure 1The automated production unit for asphalt release agent also includes a control system, which is electrically connected to the multi-stage filtration device 3, stirring device 4, jacketed heating layer 5, dispersion and homogenization pump 6, and first buffer tank 9 and second buffer tank 10 to achieve full-process automatic control. The system collects real-time data on the pressure / flow rate of the multi-stage filtration device 3, the rotation speed of the stirring device 4, the temperature of the jacketed heating layer 5, the pressure / rotation speed of the dispersion and homogenization pump 6, and the liquid level / temperature of the first and second buffer tanks 9 and 10 through a sensor network. Based on preset parameter thresholds, the system automatically adjusts the equipment's operating status, such as the filter scraper frequency of the self-cleaning scraper filter 31, the centrifuge feed rate of the disc centrifuge 32, the heating power of the jacketed heating layer 5, and the rotation speed gradient of the dispersion and homogenization pump 6. This achieves closed-loop control of the entire process from raw material pretreatment to finished product collection, ensuring coordinated operation of each stage and stable product quality.

[0052] The workflow of this environmentally friendly automated asphalt release agent production device is as follows:

[0053] I. Raw material pretreatment stage

[0054] Coarse filtration: Waste oil source is filtered by self-cleaning scraper filter 31 to intercept solid impurities ≥50μm (such as debris and particles), avoiding equipment wear and finished product contamination.

[0055] Oil-water separation: The filtrate after coarse filtration enters the first buffer tank 9 (monitored in real time by the liquid level sensor 11); the filtrate then enters the disc centrifuge 32, where the light phase oil phase and the heavy phase (containing impurities and water) are separated by density by centrifugal force. The light phase oil phase is temporarily stored in the second buffer tank 10, and the heavy phase is discharged into the waste liquid collection device for centralized treatment.

[0056] Deep dehydration: The oil phase in the second buffer tank 10 is maintained at 50-60℃ to optimize the dehydration efficiency, and then transported to the molecular sieve dehydration tower 33. The molecular sieve adsorbent in the molecular sieve dehydration tower 33 removes the residual water in the oil phase through physical adsorption, reducing the water content. The final refined oil is pumped into the mixing tank 1 through the feed pipe 30 to provide high-purity raw materials for subsequent mixing processes.

[0057] II. Mixing Phase

[0058] Material mixing: After the refined oil enters the mixing tank 1, emulsifiers, preservatives and other additives are automatically added according to the preset formula; the stirring device 4 is started, and the drive motor 41 drives the main stirring shaft 42 to rotate, so that the multi-layer blades 43 work together: the first blade 431 rotates against the tank wall to scrape off the adhering material to avoid coking or waste; the second blade 432 generates shear force through high-speed rotation to initially disperse the oil phase droplets to 10-20μm; the third blade 433 pushes the material to form an up-and-down circulating flow field, eliminates mixing dead zones and ensures that the additives and oil phase are uniformly integrated.

[0059] Temperature control: During the mixing process, the jacket heating layer 5 on the outside of the mixing tank 1 is heated by hot water or steam to stabilize the temperature of the material inside the tank at 50-70℃, which can be adjusted according to the specific formula. This reduces the viscosity of the material to improve its fluidity, while also promoting the reaction activity between the additives and the oil phase and enhancing the mixing effect.

[0060] III. Fine Homogenization Stage

[0061] The uniformly mixed material enters the dispersion homogenizing pump 6 through the first conveying pipe 7. The first-stage shearing unit refines the oil droplet size from 10-20μm to 5-10μm, the second stage further reduces it to 2-5μm, and the third stage finally refines it to ≤1μm. Through the progressively increasing shear force, the oil phase interface film is completely broken, forming a stable nanoscale emulsion, ensuring that the finished product has no risk of stratification or sedimentation.

[0062] IV. Finished Product Collection Stage

[0063] The homogenized release agent enters the stainless steel collection tank 2 through the second delivery pipe 8, and the filling signal is automatically triggered when the liquid level reaches the target.

[0064] V. Automation Control Logic

[0065] Throughout the entire production process, the control system monitors in real time the pressure and flow rate of the multi-stage filtration device 3, the liquid level and temperature of the first buffer tank 9 and the second buffer tank 10, the temperature of the mixing tank 1, the rotation speed of the stirring device 4, and the shear force and outlet pressure of the dispersion homogenizing pump 6. Based on real-time feedback data, the control system automatically adjusts the operating parameters of each device, such as the centrifuge speed, heating temperature, and homogenizing pump power, to achieve unmanned operation throughout the entire process, ensuring stable product quality and maximizing production efficiency.

[0066] The implementation principle of the present utility model is as follows: The multi-stage filtration device 3 achieves raw material purification through the three-stage coordination of "filtration - centrifugation - dehydration": The self-cleaning scraper filter 31 uses the cooperation of the scraper and the filter screen to efficiently intercept large particle impurities and automatically discharge the slag; the disc centrifuge 32 separates the oil phase, water phase and heavy impurities according to the density difference through the centrifugal force generated by high-speed rotation; the molecular sieve dehydration tower 33 uses the adsorption characteristics of the molecular sieve to deeply adsorb residual moisture. The first buffer tank 9 and the second buffer tank 10 maintain the stable feeding of each link through liquid level and temperature control, ensuring the filtration efficiency. The multi-layer blades 43 of the stirring device 4 achieve efficient mixing through functional division: The first blade 431 rotates close to the barrel wall to prevent the material from adhering; the second blade 432 rotates at high speed to generate shear force to initially break the oil phase droplets; the spiral structure of the third blade 433 pushes the material to flow up and down to eliminate the mixing dead angle. The three-stage shearing unit of the dispersion homogenization pump 6 refines the oil droplets through progressive shearing: The front-stage shearing unit initially breaks the large droplets, and the rear-stage unit further shears the small droplets. Using the shear force, impact force and turbulence effect generated by the high-speed relative movement of the rotor and the stator, the oil droplet diameter is reduced to a stable range. The control system automatically adjusts parameters such as the motor speed and heating power by receiving the sensor signals (such as flow rate, temperature, liquid level) of each device, realizing full-process linkage control to ensure the stable quality of the product. The mixing barrel 1 and the collection barrel 2 made of stainless steel avoid material pollution through corrosion resistance, ensuring the purity of the finished product.

[0067] The embodiments of the specific implementation manners are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. An automated production device for an environmentally friendly asphalt release agent, comprising a mixing tank (1) and a collection tank (2), characterized in that, It also includes a multi-stage filtration device (3), The multi-stage filtration device (3) is connected to the inlet of the mixing tank (1) through the feed pipe (30); The mixing tank (1) is equipped with a stirring device (4), and the mixing tank (1) is equipped with a jacketed heating layer (5) on the outside. The discharge port of the mixing tank (1) is connected to the feed end of the dispersing and homogenizing pump (6) through the first conveying pipe (7), and the discharge end of the dispersing and homogenizing pump (6) is connected to the collection tank (2) through the second conveying pipe (8).

2. The environmentally friendly automated production device for asphalt release agent according to claim 1, characterized in that, The multi-stage filtration device (3) includes a self-cleaning scraper filter (31), a disc centrifuge (32), and a molecular sieve dehydration tower (33) connected in series. The inlet of the self-cleaning scraper filter (31) is connected to the waste oil source, and its outlet is connected to the inlet of the disc centrifuge (32) through a pipe. The light phase outlet (321) of the disc centrifuge (32) is connected to the molecular sieve dehydration tower (33), and its heavy phase outlet (322) is connected to a waste liquid collection device. The outlet of the molecular sieve dehydration tower (33) is connected to the inlet of the mixing tank (1).

3. The environmentally friendly automated production device for asphalt release agent according to claim 2, characterized in that, The multi-stage filtration device (3) also includes a first buffer tank (9) and a second buffer tank (10). The first buffer tank (9) is disposed between the self-cleaning scraper filter (31) and the disc centrifuge (32) to balance flow fluctuations; The second buffer tank (10) is located between the disc centrifuge (32) and the molecular sieve dehydration tower (33) for storing intermediate products; Both the first buffer tank (9) and the second buffer tank (10) are equipped with a liquid level sensor (11) and a temperature control device (12).

4. The environmentally friendly automated production device for asphalt release agent according to claim 1, characterized in that, The stirring device (4) includes a drive motor (41), a main stirring shaft (42), and multi-layer blades (43); The drive motor (41) is installed on the top of the mixing tank (1), and its output shaft is connected to the main stirring shaft (42); The multi-layered blades (43) are spaced apart along the axial direction of the main stirring shaft (42).

5. The environmentally friendly automated production device for asphalt release agent according to claim 4, characterized in that, The multi-layer blades (43) include a first blade (431), a second blade (432) and a third blade (433) arranged from top to bottom along the main stirring shaft (42); The first blade (431) is used to scrape off the adhering material on the inner wall of the mixing tank (1); The second blade (432) is used to generate shear force to disperse oil phase droplets; The third blade (433) is used to propel the material to form an up-and-down circulating flow field within the mixing tank (1).

6. The environmentally friendly automated production device for asphalt release agent according to claim 1, characterized in that, The dispersion homogenizing pump (6) adopts a three-stage high-shear structure, including three shearing units directly connected in series along the material flow direction.

7. The environmentally friendly automated production device for asphalt release agent according to claim 3, characterized in that, It also includes a control system, which is electrically connected to the multi-stage filtration device (3), the stirring device (4), the jacket heating layer (5), the dispersion homogenizing pump (6), the liquid level sensor (11), and the temperature control device (12) to achieve full-process automatic control.

8. The environmentally friendly automated production device for asphalt release agent according to claim 1, characterized in that, Both the mixing tank (1) and the collecting tank (2) are made of stainless steel.

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