Emulsified asphalt mixing production equipment

Abstract

The invention provides emulsified asphalt mixing production equipment, and relates to the technical field of emulsified asphalt production.The emulsified asphalt mixing production equipment comprises an equipment outer cylinder, a sealing partition plate is installed on the inner side of the equipment outer cylinder, the equipment outer cylinder is of a split type design, an inner cylinder is installed above the sealing partition plate, an electric heating sleeve is installed on the outer side of the inner cylinder, and a discharging valve is installed on the sealing partition plate; a mixing cylinder is arranged below the sealing partition plate, two sets of symmetrically-arranged storage cavities are formed between the inner cylinder and the equipment outer cylinder, a heat conduction sleeve is installed on the outer side of the equipment outer cylinder, a circulating air pipe is installed in the heat conduction sleeve, and an exhaust port is formed in the upper end of the inner cylinder and connected with the input end of the circulating air pipe; the circulating gas pipe is combined with the heat conduction sleeve, so that high-temperature waste gas and heat energy of the storage cavity are fully utilized, the requirement for an external heat source is lowered, waste heat generated by heating asphalt is transmitted to emulsified liquid, waste heat recovery and gradient utilization are achieved, the energy utilization efficiency is improved, and the operation energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of emulsified asphalt production, and in particular to an emulsified asphalt mixing production device. Background Art

[0002] Emulsified asphalt is a water-in-oil or oil-in-water product formed by mixing asphalt and emulsified soap liquid in proportion and then mechanically stirring at high speed to disperse the asphalt in the emulsified soap liquid as fine particles. The existing emulsification process is mainly completed in an emulsifier, which includes a tank body and stirring, temperature control, heating and other devices connected to a control system. The heating device provides continuous heat energy to the emulsifier, and with the assistance of the temperature control device, the temperature of the asphalt is kept stable during the emulsification production. The asphalt and emulsified soap liquid in the tank body are stirred by a stirring device and other operations to complete the processing of emulsified asphalt.

[0003] However, in the emulsified asphalt mixing production process, when the asphalt is heated, its waste heat (such as high-temperature exhaust gas) is not fully utilized, resulting in low thermal efficiency and high energy consumption of the equipment. At the same time, in traditional equipment, the heating and temperature control of asphalt and emulsion are separated and difficult to coordinate, which can easily lead to local overheating or insufficient heating. Therefore, the present invention proposes an emulsified asphalt mixing production equipment to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide an emulsified asphalt mixing production equipment, which has the advantage of saving energy and can solve the problems in the prior art.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: an emulsified asphalt mixing production equipment, including an equipment outer cylinder, a sealing baffle is installed on the inner side of the equipment outer cylinder, and the equipment outer cylinder is a split design, an inner cylinder is installed above the sealing baffle, and an electric heating sleeve is installed on the outer side of the inner cylinder, a unloading valve is installed on the sealing baffle, and the position of the unloading valve corresponds to the inner cylinder, a mixing cylinder is provided below the sealing baffle, and the input end of the mixing cylinder corresponds to the position of the unloading valve, two groups of symmetrically arranged storage chambers are formed between the inner cylinder and the equipment outer cylinder, a heat-conducting sleeve is installed on the outer side of the equipment outer cylinder, and a circulating air pipe is installed in the heat-conducting sleeve, an exhaust port is provided at the upper end of the inner cylinder, and the exhaust port is connected to the input end of the circulating air pipe, a first stirring assembly is installed on the inner side of the inner cylinder, a second stirring assembly is installed on the inner side of the storage chamber, and the storage chamber is connected to the mixing cylinder through a discharge pipe.

[0006] A further improvement is that the first stirring assembly includes a main shaft and two groups of symmetrically arranged secondary shafts, the main shaft and the secondary shafts are connected to the inner cylinder through bearings, and the main shaft is connected to the secondary shaft through a sprocket and a chain, and the secondary shaft is equipped with a first stirring blade, and the first stirring blade is provided in several groups.

[0007] A further improvement is that a feeding part is provided at the lower end of the inner cylinder, a spiral auger is provided on the inner side of the feeding part, the spiral auger is connected to the main shaft, and the position of the spiral auger corresponds to the position of the unloading valve.

[0008] A further improvement is that two groups of first stirring shafts distributed up and down are installed on the inner side of the mixing drum, second stirring blades are installed on the first stirring shafts, and the second stirring blades are provided in several groups, the second stirring blades on the upper and lower sides are staggered, and a discharge port is installed at the lower end of the mixing drum.

[0009] A further improvement is that a material delivery port and a liquid level observation port are installed on the outside of the outer cylinder of the equipment, and two groups of the material delivery port and the liquid level observation port are provided, which correspond to the positions of the two groups of storage chambers respectively.

[0010] A further improvement is that the outer cylinder of the equipment includes an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are connected by bolts, and the sealing partition is fixedly connected to the upper cylinder.

[0011] A further improvement is that a charging port is installed at the upper end of the inner cylinder, a sealing cover is installed on the charging port, and a temperature sensor is installed on the inner side of the inner cylinder.

[0012] A further improvement is that the position of the heat-conducting sleeve corresponds to the positions of the inner cylinder and the storage cavity.

[0013] A further improvement is that the second stirring assembly includes a second stirring shaft, the second stirring shaft and the first stirring shaft are driven by independent motors, and the second stirring shaft is equipped with third stirring blades, and the third stirring blades are provided in several groups.

[0014] The beneficial effects of the present invention are as follows: the emulsified asphalt mixing production equipment is combined with a heat-conducting sleeve by the circulating air pipe, so that the heat energy of high-temperature exhaust gas and storage chamber is fully utilized, and the demand for external heat source is reduced. The waste heat generated by heating asphalt is transferred to the emulsion, thereby realizing waste heat recovery and cascade utilization, improving energy utilization efficiency, and reducing operating energy consumption. The inner cylinder, storage chamber and mixing cylinder are combined in one system to realize temperature zoning control, thereby avoiding the influence of excessively high or low temperature on the emulsification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a front view structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the front view structure of the inner cylinder of the present invention.

[0018] Figure 3 It is a schematic diagram of the formal structure of the lower cylinder of the present invention.

[0019] Figure 4 It is a schematic diagram of the formal structure of the upper cylinder of the present invention.

[0020] Among them: 1. Equipment outer cylinder; 2. Sealing baffle; 3. Inner cylinder; 4. Electric heating sleeve; 5. Unloading valve; 6. Mixing cylinder; 7. Storage chamber; 8. Heat transfer sleeve; 9. Circulating air pipe; 10. Exhaust port; 11. Discharge pipe; 12. Main shaft; 13. Sub-shaft; 14. First stirring blade; 15. Feeding part; 16. Screw auger; 17. First stirring shaft; 18. Second stirring blade; 19. Discharge port; 20. Feeding port; 21. Upper cylinder; 22. Lower cylinder; 23. Loading port; 24. Sealing cover; 25. Temperature sensor. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0022] according to Figure 1-Figure 4 As shown, this embodiment proposes an emulsified asphalt mixing production equipment, including an equipment outer cylinder 1, a sealing baffle 2 is installed on the inner side of the equipment outer cylinder 1, and the equipment outer cylinder 1 is a split design, the equipment outer cylinder 1 includes an upper cylinder 21 and a lower cylinder 22, the upper cylinder 21 and the lower cylinder 22 are connected by bolts, the sealing baffle 2 is fixedly connected to the upper cylinder 21, and the split design is adopted to facilitate the disassembly, cleaning and maintenance of the equipment.

[0023] An inner cylinder 3 is installed above the sealing partition 2, and an electric heating sleeve 4 is installed on the outer side of the inner cylinder 3. A discharge valve 5 is installed on the sealing partition 2, and the position of the discharge valve 5 corresponds to the inner cylinder 3. The discharge valve 5 is an electrically controlled valve. At the same time, the lower end of the inner cylinder 3 is sealed and connected to the sealing partition 2 and fixed by bolts. Then, when the discharge valve 5 is closed, the material in the inner cylinder 3 cannot pass normally.

[0024] A mixing barrel 6 is provided below the sealing partition 2, and the input end of the mixing barrel 6 corresponds to the position of the unloading valve 5. A feed hopper is installed at the upper end of the mixing barrel 6, and the position of the feed hopper corresponds to the unloading valve 5. When the unloading valve 5 is in an open state, the material in the inner barrel 3 enters the mixing barrel 6. Further, a feeding part 15 is provided at the lower end of the inner barrel 3, and sealing baffles are installed at both ends of the feeding part 15 to separate the storage chambers 7 on both sides. The diameter of the feeding part 15 is smaller than the diameter of the upper part of the inner barrel 3, forming a naturally contracted feeding structure. A spiral auger 16 is provided on the inner side of the feeding part 15, and the spiral auger 16 is connected to the main shaft 12, and the position of the spiral auger 16 corresponds to the position of the unloading valve 5. When the main shaft 12 rotates, it can drive the spiral auger 16 to rotate, thereby ensuring that the material can smoothly enter the mixing barrel 6 under the action of gravity or the conveying of the spiral auger 16, and prevent the material from being blocked during the conveying process.

[0025] During operation, the material in the inner cylinder 3 is heated to the target temperature by the electric heating sleeve 4. At the same time, the material is uniformly stirred through the linkage stirring of the main shaft 12 and the secondary shaft 13 of the first stirring component. The heated material is transported downward through the spiral auger 16 in the feeding part 15. The design of the spiral auger 16 ensures that the material flows continuously and stably to the feeding valve 5. When the feeding valve 5 is opened, the material enters the mixing cylinder 6 through the feed hopper and is mixed with the emulsion transported by the storage chamber 7 in the mixing cylinder 6, and finally the emulsified asphalt is output through the discharge port 19.

[0026] Two groups of symmetrical storage chambers 7 are formed between the inner cylinder 3 and the outer cylinder 1 of the equipment. The storage chamber 7 is sealed. A heat-conducting sleeve 8 is installed on the outside of the outer cylinder 1 of the equipment, and a circulating air pipe 9 is installed in the heat-conducting sleeve 8. An exhaust port 10 is provided at the upper end of the inner cylinder 3, and the exhaust port 10 is connected to the input end of the circulating air pipe 9. At the same time, the position of the heat-conducting sleeve 8 corresponds to the position of the inner cylinder 3 and the storage chamber 7. In this device, the outer cylinder 1 of the equipment is used for the storage and treatment of asphalt, while the storage chamber 7 is used for the storage and treatment of emulsion. During operation, the storage chamber 7 realizes a preheating function through the heat-conducting sleeve 8, and the preheating function is generated by the heating process of the asphalt in the inner cylinder 3. The heat is effectively transferred to the storage chamber 7 through the heat-conducting sleeve 8 and the circulating air pipe 9, thereby realizing the step-by-step utilization of thermal energy. Specifically, the hot air generated by the exhaust of the inner cylinder 3 is introduced through the circulating air pipe 9 to realize the circulation of thermal energy, and then the hot air forms a uniform heat flow field in the heat-conducting sleeve to ensure consistent heating effect in each area. Correspondingly, the inner tube 3 can also play a certain role in heat conduction, and the output end of the circulating gas pipe 9 is connected to the external gas recovery equipment.

[0027] In the present device, the exhaust port 10 introduces the exhaust gas generated by the heating of the inner tube 3 into the circulating air pipe 9, and finally transfers it to the heat-conducting sleeve 8, so as to realize the step-by-step utilization of heat and preheat the storage chamber 7, which significantly reduces the overall energy consumption. At the same time, the heat in the exhaust gas is fully utilized, which reduces the direct emission of the exhaust gas and meets the environmental protection requirements.

[0028] A first stirring assembly is installed on the inner side of the inner cylinder 3, a second stirring assembly is installed on the inner side of the storage chamber 7, and the storage chamber 7 is connected to the mixing cylinder 6 through a discharge pipe 11, and an electric control valve is installed on the discharge pipe 11, wherein the first stirring assembly includes a main shaft 12 and two groups of symmetrically arranged secondary shafts 13, the main shaft 12 and the secondary shaft 13 work in conjunction to keep the high-viscosity asphalt in the inner cylinder 3 sufficiently uniform during the stirring process, the main shaft 12 and the secondary shaft 13 are connected to the inner cylinder 3 through bearings, and the main shaft 12 is connected to the secondary shaft 13 through a sprocket and a chain, a first stirring blade 14 is installed on the secondary shaft 13, and the first stirring blade 14 is provided with a plurality of groups. The second stirring component includes a second stirring shaft 26. The second stirring shaft 26 and the first stirring shaft 17 are driven by independent motors. A third stirring blade 27 is installed on the second stirring shaft 26, and the third stirring blade 27 is provided in a plurality of groups. The second stirring component is used for uniform mixing of the emulsion to prevent stratification of the emulsion. At the same time, the fluidity of the material is improved during the stirring process, which helps to evenly distribute the heat provided by the heat conductive sleeve 8, so that the emulsion maintains a uniform temperature during the preheating process.

[0029] Two groups of first stirring shafts 17 are installed on the inner side of the mixing barrel 6, and second stirring blades 18 are installed on the first stirring shafts 17. The second stirring blades 18 are provided in several groups, and the second stirring blades 18 on the upper and lower sides are staggered. A discharge port 19 is installed at the lower end of the mixing barrel 6. During operation, the asphalt in the inner barrel 3 is heated to become liquid asphalt, and then the asphalt and the emulsion enter the mixing barrel 6. The upper and lower two groups of stirring shafts and the stirring blades thereon perform multi-stage mixing of the materials. At the same time, the staggered arrangement of the stirring blades can produce strong disturbance and shearing effects during the mixing process, thereby accelerating the uniform dispersion of the materials. As for the discharge port 19, it adopts a conical structure, so that the material flows to the outlet under the action of gravity and the promotion of the stirring blades, and an electrically controlled valve is installed on the discharge port 19. Furthermore, an electric heater is also installed on the inner side of the mixing barrel 6 to control the heat during the mixing process.

[0030] A feed port 20 and a liquid level observation port are installed on the outside of the outer cylinder 1 of the equipment. There are two groups of feed port 20 and liquid level observation port, which correspond to the positions of the two groups of storage chambers 7 respectively. A valve is installed on the feed port 20, which is connected to the storage chamber 7 for the input of emulsion, and the liquid level observation port is used to monitor the storage amount of emulsion in the storage chamber 7 in real time to avoid too much or too little.

[0031] The upper end of the inner cylinder 3 is provided with a charging port 23, and a sealing cover 24 is provided on the charging port 23. A temperature sensor 25 is provided on the inner side of the inner cylinder 3. The charging port 23 is located at the upper end of the inner cylinder 3 and adopts a standard circular or elliptical opening design to facilitate manual or mechanical feeding. Accordingly, when the charging port 23 is closed by the sealing cover 24, the sealing of the material in the cylinder is ensured to avoid volatilization or contamination. The temperature sensor 25 is used to detect the temperature in the inner cylinder 3 in real time.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An emulsified asphalt mixing production equipment, comprising an equipment outer cylinder (1), characterized in that: A sealing baffle (2) is installed on the inner side of the outer cylinder (1) of the equipment, and the outer cylinder (1) of the equipment is of split design. An inner cylinder (3) is installed above the sealing baffle (2), and an electric heating sleeve (4) is installed on the outer side of the inner cylinder (3). A discharge valve (5) is installed on the sealing baffle (2), and the position of the discharge valve (5) corresponds to that of the inner cylinder (3). A mixing cylinder (6) is provided below the sealing baffle (2), and the input end of the mixing cylinder (6) corresponds to the position of the discharge valve (5). The inner cylinder (3) and the equipment are connected to each other. Two groups of storage chambers (7) are symmetrically arranged between the outer cylinders (1); a heat-conducting sleeve (8) is installed on the outer side of the outer cylinder (1) of the device, and a circulating air pipe (9) is installed in the heat-conducting sleeve (8); an exhaust port (10) is provided at the upper end of the inner cylinder (3); the exhaust port (10) is connected to the input end of the circulating air pipe (9); a first stirring assembly is installed on the inner side of the inner cylinder (3); a second stirring assembly is installed on the inner side of the storage chamber (7); and the storage chamber (7) is connected to the mixing cylinder (6) through a discharge pipe (11).

2. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: The first stirring assembly comprises a main shaft (12) and two groups of symmetrically arranged secondary shafts (13); the main shaft (12) and the secondary shaft (13) are both connected to the inner cylinder (3) via bearings, and the main shaft (12) is connected to the secondary shaft (13) via a sprocket and a chain; a first stirring blade (14) is installed on the secondary shaft (13), and the first stirring blade (14) is provided in a plurality of groups.

3. The emulsified asphalt mixing production equipment according to claim 2, characterized in that: A feeding portion (15) is provided at the lower end of the inner cylinder (3), a spiral auger (16) is provided on the inner side of the feeding portion (15), the spiral auger (16) is connected to the main shaft (12), and the position of the spiral auger (16) corresponds to the position of the unloading valve (5).

4. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: Two groups of first stirring shafts (17) distributed vertically are installed on the inner side of the mixing drum (6); second stirring blades (18) are installed on the first stirring shafts (17); and the second stirring blades (18) are provided in a plurality of groups. The second stirring blades (18) on the upper and lower sides are staggered. A discharge port (19) is installed at the lower end of the mixing drum (6).

5. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: A material delivery port (20) and a liquid level observation port are installed on the outside of the outer cylinder (1) of the equipment. The material delivery port (20) and the liquid level observation port are each provided with two groups, and correspond to the positions of the two groups of storage chambers (7) respectively.

6. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: The outer cylinder (1) of the equipment comprises an upper cylinder (21) and a lower cylinder (22), wherein the upper cylinder (21) and the lower cylinder (22) are connected by bolts, and the sealing partition (2) is fixedly connected to the upper cylinder (21).

7. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: A charging port (23) is installed at the upper end of the inner cylinder (3), and a sealing cover (24) is installed on the charging port (23). A temperature sensor (25) is installed on the inner side of the inner cylinder (3).

8. The emulsified asphalt mixing production equipment according to claim 1, characterized in that: The position of the heat-conducting sleeve (8) corresponds to the positions of the inner cylinder (3) and the storage chamber (7).

9. The emulsified asphalt mixing production equipment according to claim 4, characterized in that: The second stirring assembly comprises a second stirring shaft (26), the second stirring shaft (26) and the first stirring shaft (17) are driven by independent motors, a third stirring blade (27) is mounted on the second stirring shaft (26), and the third stirring blade (27) is provided in a plurality of groups.

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