Asphalt thermal regeneration equipment

Abstract

The utility model provides asphalt thermal regeneration equipment, and belongs to the field of asphalt thermal regeneration equipment. The problems that energy in waste gas is wasted and energy consumption of the asphalt thermal regeneration equipment is increased due to the fact that no waste gas heat recycling mode exists in the existing asphalt thermal regeneration equipment are solved. The asphalt thermal regeneration equipment is provided with an exhaust port for exhausting waste gas, a storage cavity for storing an asphalt regenerant and a gas heating cavity arranged around the side wall of the storage cavity are arranged in the regenerant storage box, one end of the regenerant atomizing pipe is communicated with the storage cavity, and the other end of the regenerant atomizing pipe extends into the thermal regeneration furnace main body; the other end of the waste heat gas main pipeline communicates with the gas heating cavity. By means of the arrangement, a waste gas heat recycling mode is provided for the asphalt thermal regeneration equipment, waste of energy in waste gas is avoided, and energy consumption of the asphalt thermal regeneration equipment is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of asphalt hot recycling equipment, and particularly relates to an asphalt hot recycling equipment. Background Art

[0002] In road paving or maintenance operations, first, old asphalt, new asphalt, and new aggregates are mixed according to a ratio to form an asphalt mixture, and then the asphalt mixture and a regenerant are heated and mixed by an asphalt hot recycling equipment to form a new asphalt mixture for road maintenance, so as to recycle the old asphalt in this way. During the heating of the asphalt mixture or the reaction with the regenerant in the traditional asphalt hot recycling equipment, a large amount of waste gas is generated. These waste gases usually carry a large amount of heat, but these waste gases are usually directly discharged after simple purification.

[0003] The Chinese patent publication number is CN112267352A. This utility model discloses an environment-friendly old asphalt hot recycling equipment, including a regeneration cylinder body, a rotating shaft, a stirring mechanism, a feed inlet, a discharge outlet, a smoke collecting pipe, an S-shaped elbow pipe, air holes, and a treatment liquid. The principle of the environment-friendly old asphalt hot recycling equipment is that after feeding through the feed inlet, the materials in the regeneration cylinder body are mixed by the stirring mechanism driven by the rotating shaft, and finally the mixed new asphalt mixture is discharged through the discharge outlet. During this process, the waste gas will pass through the smoke collecting pipe, the S-shaped elbow pipe, the air holes, and finally reach the treatment liquid. By purifying and then directly discharging the waste gas, although such operation causes less pollution to the environment, the waste gas is directly discharged after purification, and the heat carried by the waste gas during the generation to discharge process is not well utilized. Therefore, the waste gas of the asphalt hot recycling equipment cannot be reused twice and the energy consumption of the asphalt hot recycling equipment is high.

[0004] In summary, the problems existing in the existing asphalt hot recycling equipment are as follows: there is no way to reuse the waste gas heat, resulting in energy waste in the waste gas and increased energy consumption of the asphalt hot recycling equipment. Summary of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide an asphalt hot recycling equipment in which the waste gas and the heat in the waste gas can be reused twice, so as to solve the problems that the existing asphalt hot recycling equipment has no way to reuse the waste gas, resulting in energy waste in the waste gas and increased energy consumption of the asphalt hot recycling equipment.

[0006] To achieve the above purpose and other related purposes, the present utility model provides an asphalt hot recycling equipment, and the asphalt hot recycling equipment includes:

[0007] A hot recycling furnace main body, and an exhaust port for discharging waste gas is provided at the upper end of the hot recycling furnace main body;

[0008] Regenerant storage box, wherein two cavities are provided in the regenerant storage box. One of the cavities is a storage cavity for storing asphalt regenerant, and the other cavity is arranged around the side wall of the storage cavity. The other cavity is a gas heating cavity, and the regenerant storage box is made of heat-conducting material;

[0009] Regenerant atomizing pipe, one end of the regenerant atomizing pipe is communicated with the storage cavity, and the other end of the regenerant atomizing pipe penetrates through the side wall of the hot regeneration furnace main body and extends into the hot regeneration furnace main body;

[0010] Waste heat gas main pipeline, one end of the waste heat gas main pipeline is communicated with the exhaust port, and the other end of the waste heat gas main pipeline is communicated with the gas heating cavity.

[0011] As an optional solution, the asphalt hot regeneration equipment further includes a blower and a plasma purifier; the blower and the plasma purifier are installed on the waste heat gas main pipeline.

[0012] As an optional solution, the asphalt hot regeneration equipment further includes a pressurization branch, a pressure tank, a solenoid valve, a pressure relief pipeline and a pressure relief valve;

[0013] The pressure tank is installed on the waste heat gas main pipeline, and the plasma purifier is located between the pressure tank and the blower;

[0014] One end of the pressurization branch is communicated with the waste heat gas main pipeline, the other end of the pressurization branch is communicated with the storage cavity, the intersection of the pressurization branch and the waste heat gas main pipeline is located between the pressure tank and the regenerant storage box, and the solenoid valve is installed on the pressurization branch;

[0015] The pressure relief pipeline is communicated with the gas heating cavity, and the pressure relief valve is installed on the pressure relief pipeline.

[0016] As an optional solution, a plurality of atomizing nozzles are equidistantly installed on the regenerant atomizing pipe, and the atomizing nozzles are all located inside the hot regeneration furnace main body.

[0017] As an optional solution, two chambers are provided inside the hot regeneration furnace main body. One of the chambers is the inner cavity of the hot regeneration furnace for storing asphalt mixture, and the other chamber is arranged around the side wall of the inner cavity of the hot regeneration furnace. The other chamber is a heat conduction chamber;

[0018] Two pipe joints vertically penetrating through the side wall of the hot regeneration furnace main body are communicated with the bottom of the heat conduction chamber. One of the pipe joints is an oil inlet end, and the other pipe joint is an oil outlet end.

[0019] As an optional solution, the hot regeneration furnace main body further includes a feeding component, a discharging pipeline and a manual valve;

[0020] The feeding component is located at the upper end of the hot regeneration furnace main body and is communicated with the inner cavity of the hot regeneration furnace;

[0021] The discharge pipeline is located at the lower end of the main body of the thermal regeneration furnace and is connected to the inner cavity of the thermal regeneration furnace;

[0022] The manual valve is fixedly installed on the discharge pipeline.

[0023] As an alternative, the feeding component includes a feeding pipeline, a guide rod, a spring, a limiting block and a baffle plate;

[0024] The feeding pipeline is connected to the inner cavity of the thermal regeneration furnace;

[0025] The baffle plate is installed inside the feeding pipeline and opens and closes the feeding pipeline. One end of the baffle plate is rotatably connected to the inner wall of the feeding pipeline;

[0026] One end of the guide rod abuts against the baffle plate. The other end of the guide rod slides out of the side wall of the feeding pipeline. The sliding direction of the guide rod, the rotation axis of the baffle plate and the center line of the feeding pipeline are perpendicular to each other in pairs;

[0027] The limiting block is fixed at the end of the guide rod that passes through the feeding pipeline;

[0028] The spring is sleeved on the guide rod. One end of the spring is fixedly connected to the limiting block, and the other end of the spring is fixedly connected to the outer wall of the feeding pipeline.

[0029] As an alternative, the asphalt thermal regeneration equipment further includes a rotation power source, a stirring shaft and blades;

[0030] The stirring shaft is rotatably installed in the main body of the thermal regeneration furnace. The blades are fixedly installed on the stirring shaft. The rotation power source drives the stirring shaft to rotate.

[0031] As described above, an asphalt thermal regeneration equipment of the present utility model has at least the following beneficial effects:

[0032] 1. By providing a regenerant storage box with a storage cavity and a gas heating cavity and a waste heat gas main pipeline, the waste gas can enter the gas heating cavity through the waste heat gas main pipeline to preheat the asphalt regenerant in the regenerant storage box by using the heat of the waste gas, so that the heat in the waste gas is reused, avoiding the waste of energy in the waste gas and reducing the energy consumption of the asphalt thermal regeneration equipment;

[0033] 2. By providing an atomizing nozzle, a pressurizing branch and a pressurizing tank on the atomizing pipe, the regenerant storage box can be stably pressurized. The asphalt regenerant will be atomized and sprayed into the interior of the main body of the thermal regeneration furnace through the atomizing nozzle under pressure, thereby ensuring better contact between the asphalt mixture and the regenerant and ensuring the product quality of the new asphalt mixture;

[0034] 3. By setting an electromagnetic valve in this application, different doses of asphalt rejuvenator can be injected at different times according to the observed reaction conditions to ensure the mixing effect of the asphalt rejuvenator, thus making the addition of the asphalt rejuvenator a controllable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It shows a schematic structural view of the asphalt thermal regeneration equipment of the present utility model;

[0036] Figure 2 It shows the Figure 1 schematic structural view of part A in the present utility model;

[0037] Figure 3 It shows a schematic structural view of the rejuvenator storage box, rejuvenator atomizing pipe and pressure relief pipeline of the asphalt thermal regeneration equipment of the present utility model;

[0038] Figure 4 It shows a cross-sectional view of the structure of the rejuvenator storage box and rejuvenator atomizing pipe of the present utility model;

[0039] Figure 5 It shows a cross-sectional view of the structure of the asphalt thermal regeneration equipment of the present utility model;

[0040] Figure 6 It shows the Figure 5 schematic structural view of part B in the present utility model.

[0041] In the figure: 1. Main body of the thermal regeneration furnace; 2. Rejuvenator storage box; 3. Rejuvenator atomizing pipe; 4. Main pipeline for waste heat gas; 5. Blower; 6. Plasma purifier; 7. Pressurization branch; 8. Pressurization tank; 9. Electromagnetic valve; 10. Pressure relief pipeline; 11. Pressure relief valve

[0042] 101. Exhaust port; 102. Inner cavity of the thermal regeneration furnace; 103. Heat conduction cavity; 104. Oil inlet end; 105. Oil outlet end; 106. Cylindrical partition; 107. Feeding component; 108. Discharge pipeline; 109. Manual valve; 110. Rotating power source; 111. Stirring shaft; 112. Blade;

[0043] 1071. Feeding pipeline; 1072. Guide rod; 1073. Spring; 1074. Limit block; 1075. Baffle plate;

[0044] 201. Storage cavity; 202. Gas heating cavity; 203. Rectangular partition; 204. Check valve;

[0045] 301. Atomizing nozzle;

[0046] 801. Pressure regulating valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0048] Please refer to Figures 1 to 6 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limited conditions for the implementation of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change of the technical content, should also be regarded as the scope for the implementation of the present utility model.

[0049] The following various embodiments are only for illustration. Combinations can be made between the various embodiments, and it is not limited to the content shown in the following single embodiment.

[0050] In this embodiment, please refer to Figure 1 、 Figure 4 and Figure 5 , the present utility model provides an asphalt hot recycling device, which includes:

[0051] The main body 1 of the hot recycling furnace, and an exhaust port 101 for discharging waste gas is provided at the upper end of the main body 1 of the hot recycling furnace;

[0052] The regenerant storage box 2, two cavities are arranged in the regenerant storage box 2, one of the cavities is a storage cavity 201 for storing asphalt regenerant, and the other cavity is arranged around the side wall of the storage cavity 201, and the other cavity is a gas heating cavity 202; the regenerant storage box 2 is made of heat-conducting material;

[0053] Here, the shapes of the storage cavity 201 and the gas heating cavity 202 are not limited, and can be cylindrical or rectangular. In this embodiment, it is rectangular; the inside of the regenerant storage box 2 is a large cavity, and there is a rectangular partition 203 in the middle of the large cavity. The upper end of the rectangular partition 203 is connected to the upper wall inside the regenerant storage box 2, and the lower end of the rectangular partition 203 is connected to the lower wall inside the regenerant storage box 2. The regenerant storage box 2 is separated into two sealed cavities by the rectangular partition 203, and the outer cavity is arranged around the inner cavity. The inner cavity is the storage cavity 201 for storing asphalt regenerant; the outer cavity is the gas heating cavity 202 surrounding the storage cavity 201;

[0054] Here, a one-way valve 204 communicating with the storage chamber 201 is provided at the upper end of the regenerant storage box 2. The one-way valve 204 can add asphalt regenerant into the storage chamber 201 and prevent the asphalt regenerant and waste gas in the storage chamber 201 from flowing out.

[0055] Here, there is no limitation on the material of the regenerant storage box 2, which can be aluminum metal or aluminum nitride ceramic.

[0056] Through this setting, the high thermal conductivity material can quickly transfer the heat in the waste gas to the asphalt regenerant, enabling it to rapidly reach the catalytic active temperature, thereby shortening the preheating time; due to the improvement of the preheating efficiency, the required preheating time and energy consumption are also correspondingly reduced, thus reducing the operating cost.

[0057] A regenerant atomizing pipe 3, one end of the regenerant atomizing pipe 3 communicates with the storage chamber 201, and the other end of the regenerant atomizing pipe 3 penetrates through the side wall of the thermal regeneration furnace main body 1 and extends into the thermal regeneration furnace main body 1.

[0058] Here, when the regenerant atomizing pipe 3 penetrates through the side wall of the thermal regeneration furnace main body 1, there is a sealing design at the intersection of the regenerant atomizing pipe 3 and the thermal regeneration furnace main body 1, and the asphalt regenerant flows from the storage chamber 201 into the thermal regeneration furnace main body 1 through the regenerant atomizing pipe 3.

[0059] A waste heat gas main pipeline 4, one end of the waste heat gas main pipeline 4 communicates with the exhaust port 101, and the other end of the waste heat gas main pipeline 4 communicates with the gas heating chamber 202.

[0060] Through this setting, the storage chamber 201 can ensure the stable storage of the asphalt regenerant, avoiding leakage or deterioration. The waste gas passes from the thermal regeneration furnace main body 1 to the gas heating chamber 202 through the waste heat gas main pipeline 4. The asphalt thermal regeneration equipment can preheat the asphalt regenerant in the storage chamber 201 by using the heat in the waste gas to improve the use effect of the asphalt regenerant and realize the secondary utilization of the waste gas.

[0061] In this embodiment, please refer to Figure 1 , the asphalt thermal regeneration equipment further includes a blower 5 and a plasma purifier 6; the blower 5 and the plasma purifier 6 are installed on the waste heat gas main pipeline 4.

[0062] Here, the blower 5 can be fixedly installed at the exhaust port 101 of the thermal regeneration furnace main body 1 through screws, and the blower 5 is responsible for extracting waste gas; the plasma purifier 6 generates high-energy electrons through electric field discharge to purify the waste gas, and the purification method of the plasma purifier 6 does not reduce the heat in the waste gas.

[0063] With this setting, the asphalt hot recycling equipment can stably collect and purify the exhaust gas without losing the heat in the exhaust gas.

[0064] In this embodiment, please refer to Figure 1 and Figure 2 The asphalt hot recycling equipment further includes a pressurizing branch 7, a pressurizing tank 8, a solenoid valve 9, a pressure relief pipeline 10 and a pressure relief valve 11;

[0065] The pressurizing tank 8 is installed on the waste heat gas main pipeline 4, and the plasma purifier 6 is located between the pressurizing tank 8 and the blower 5;

[0066] Here, the function of the pressurizing tank 8 is to pressurize the purified exhaust gas to ensure the stability of the exhaust gas pressure. A pressure regulating valve 801 is also provided on the pressurizing tank 8, and the pressure regulating valve 801 can observe and adjust the pressure of the exhaust gas in the pressurizing tank 8;

[0067] One end of the pressurizing branch 7 communicates with the waste heat gas main pipeline 4, the other end of the pressurizing branch 7 communicates with the storage chamber 201, the intersection of the pressurizing branch 7 and the waste heat gas main pipeline 4 is located between the pressurizing tank 8 and the regenerant storage box 2, and the solenoid valve 9 is installed on the pressurizing branch 7;

[0068] Here, the exhaust gas in the pressurizing branch 7 is pressurized by the pressurizing tank 8 and then transported into the storage chamber 201. The solenoid valve 9 controls the opening and closing of the pressurizing branch 7 to control whether the exhaust gas enters the storage chamber 201 to pressurize the asphalt regenerant. When it is necessary to add asphalt regenerant into the main body of the hot recycling furnace 1, the solenoid valve 9 can be opened to transport stable exhaust gas into the storage chamber 201 to pressurize and heat the asphalt regenerant. The asphalt regenerant is pressurized and flows into the main body of the hot recycling furnace 1 through the regenerant atomizing pipe 3; when it is not necessary to add asphalt regenerant, the solenoid valve 9 can be directly closed;

[0069] With this setting, different doses of asphalt regenerant can be put in at different times according to the reaction conditions to ensure the mixing effect of the asphalt regenerant, so that the addition of the asphalt regenerant becomes a controllable state.

[0070] The pressure relief pipeline 10 communicates with the gas heating chamber 202, and the pressure relief valve 11 is installed on the pressure relief pipeline 10;

[0071] Here, the pressure set for the pressure relief valve 11 should be greater than the pressure of the pressurizing tank 8 so that the exhaust gas can be pressurized in the pressurizing tank 8 and the storage chamber 201;

[0072] With this setting, the air pressure in the storage chamber 201, the pressurizing tank 8 and the gas heating chamber 202 can be ensured not to be higher than the set dangerous air pressure, ensuring the stability and safety of the asphalt hot recycling equipment.

[0073] In this embodiment, please refer to Figures 3 to 5 The regenerant atomizing pipe 3 is equidistantly installed with a number of atomizing nozzles 301, and all the atomizing nozzles 301 are located inside the main body 1 of the thermal regeneration furnace.

[0074] Here, the regenerant atomizing pipe 3 is located at the bottom of the regenerant storage box 2, and the end of the regenerant atomizing pipe 3 is closed. When the electromagnetic valve 9 is opened, the waste gas will pressurize the asphalt regenerant in the storage cavity 201, and the asphalt regenerant will be atomized and sprayed into the main body 1 of the thermal regeneration furnace through the atomizing nozzles 301 under the action of the waste gas pressure;

[0075] Here, the material of the regenerant atomizing pipe 3 is not limited, and it can be stainless steel or polytetrafluoroethylene;

[0076] Through this setting, the atomized asphalt regenerant will be evenly mixed and fully reacted with the asphalt mixture in the main body 1 of the thermal regeneration furnace, ensuring the product quality of the new asphalt mixture.

[0077] In this embodiment, please refer to Figure 5 There are two chambers inside the main body 1 of the thermal regeneration furnace. One of the chambers is the inner cavity 102 of the thermal regeneration furnace for storing asphalt mixture, and the other chamber is arranged around the side wall of the inner cavity 102 of the thermal regeneration furnace, and the other chamber is the heat conduction cavity 103;

[0078] Here, the shapes of the inner cavity 102 of the thermal regeneration furnace and the heat conduction cavity 103 are not limited, and they can be cylindrical or square. In this embodiment, they are cylindrical; the inside of the main body 1 of the thermal regeneration furnace is a large chamber, and there is a cylindrical partition 106 in the middle of the large chamber. The upper end of the cylindrical partition 106 is connected to the upper wall inside the main body 1 of the thermal regeneration furnace, and the lower end of the cylindrical partition 106 is connected to the lower wall inside the main body 1 of the thermal regeneration furnace. The main body 1 of the thermal regeneration furnace is divided into two sealed chambers by the cylindrical partition 106, and the outer chamber is arranged around the inner chamber. The inner chamber is the inner cavity 102 of the thermal regeneration furnace for storing asphalt mixture; the outer chamber is the heat conduction cavity 103 surrounding the inner cavity 102 of the thermal regeneration furnace;

[0079] The bottom of the heat conduction cavity 103 is communicated with two pipe joints vertically penetrating the side wall of the main body 1 of the thermal regeneration furnace. One of the pipe joints is the oil inlet end 104, and the other pipe joint is the oil outlet end 105;

[0080] Here, the heat conduction medium in the heat conduction cavity 103 is not limited, and it can be a heat conduction gas or a heat conduction liquid; in this embodiment, the heat conduction medium is heat conduction oil, and the heating method of the heat conduction oil is not limited, and it can be electric heating or combustion fuel heating (this technical feature is not illustrated in the attached drawings of the specification);

[0081] Here, the heat-conducting oil is heated and then enters the heat-conducting cavity 103 from the oil inlet end 104 through an oil pump to heat the inner cavity 102 of the thermal regeneration furnace. The heat-conducting oil is heated by entering the heating device from the oil outlet end 105 and circulates in this way;

[0082] Through this setting, the inner cavity 102 of the thermal regeneration furnace can be heated evenly, making the asphalt mixing reaction more stable and saving energy.

[0083] In this embodiment, please refer to Figure 5 , the thermal regeneration furnace main body 1 further includes a feeding component 107, a discharge pipeline 108 and a manual valve 109;

[0084] The feeding component 107 is located at the upper end of the thermal regeneration furnace main body 1 and is connected to the inner cavity 102 of the thermal regeneration furnace;

[0085] The discharge pipeline 108 is located at the lower end of the thermal regeneration furnace main body 1 and is connected to the inner cavity 102 of the thermal regeneration furnace;

[0086] The manual valve 109 is fixedly installed on the discharge pipeline 108;

[0087] Here, in this embodiment, the asphalt mixture is put into the inner cavity of the thermal regeneration furnace main body 1 through the feeding component 107, and the new asphalt mixture after the reaction is discharged through the discharge pipeline 108;

[0088] Here, in this embodiment, the bottom of the thermal regeneration furnace main body 1 is arc-shaped, the discharge pipeline 108 is arranged at the bottom of the arc, the discharge pipeline 108 is composed of two connected pipelines. One pipeline is a vertical pipeline vertically placed and connected to the inside of the thermal regeneration furnace main body 1, and the manual valve 109 is installed on the vertical pipeline. The other pipeline is an inclined pipeline connected to the vertical pipeline and inclined downward in the horizontal direction. The inclined pipeline is semi-circular, and the upper end of the inclined pipeline is exposed;

[0089] Through this setting, the manual valve 109 can control the discharge time and quantity of the new asphalt mixture. The discharge pipeline 108 is inclined downward, which can make the new asphalt mixture slowly discharge due to gravity. The upper side of the end of the discharge pipeline 108 is exposed, which can timely observe the mixing degree and quality of the new asphalt mixture to decide whether to close the manual valve 109.

[0090] In this embodiment, please refer to Figure 5 and Figure 6 , the feeding component 107 further includes a feeding pipeline 1071, a guide rod 1072, a spring 1073, a limit block 1074 and a baffle plate 1075;

[0091] The feeding pipeline 1071 is connected to the inside of the inner cavity 102 of the thermal regeneration furnace;

[0092] Here, the feed pipe 1071 is a rectangular pipe, and the whole of the feed pipe 1071 is in communication with the inside of the inner cavity 102 of the thermal regeneration furnace. The feed pipe 1071 is vertically arranged so that materials can fall into the inner cavity 102 of the thermal regeneration furnace by gravity;

[0093] The baffle 1075 is installed inside the feed pipe 1071 and opens and closes the feed pipe 1071. One end of the baffle 1075 is rotatably connected to the inner wall of the feed pipe 1071;

[0094] Here, two opposite and penetrating through holes are provided on the feed pipe 1071. The baffle 1075 is rectangular and has a shaft at one end. The shaft penetrates into the two through holes and is rotatably connected to the through holes;

[0095] One end of the guide rod 1072 abuts against the baffle 1075, and the other end of the guide rod 1072 slides out of the side wall of the feed pipe 1071. The sliding direction of the guide rod 1072, the rotation axis of the baffle 1075, and the center line of the feed pipe 1071 are perpendicular to each other in pairs;

[0096] The limit block 1074 is fixed to the end of the guide rod 1072 that penetrates out of the feed pipe 1071;

[0097] Here, the structure of the limit block 1074 and the guide rod 1072 is not limited. It can be welded or integrally formed;

[0098] The spring 1073 is sleeved on the guide rod 1072. One end of the spring 1073 is fixedly connected to the limit block 1074, and the other end of the spring 1073 is fixedly connected to the outer wall of the feed pipe 1071;

[0099] Here, when the asphalt mixture is on the baffle 1075, the baffle 1075 rotates downward due to the gravity of the asphalt mixture, driving the guide rod 1072 to extend out of the feed pipe 1071. The distance between the outer wall of the feed pipe 1071 and the limit block 1074 becomes longer, and the spring 1073 deforms to generate an elastic force. When the asphalt mixture is not put in, the elastic force drives the guide rod 1072 to push the baffle 1075 back to its original position;

[0100] With this structure, the baffle 1075 can be automatically closed to prevent excessive overflow of waste gas, reduce pollution and improve the waste gas collection efficiency.

[0101] In this embodiment, please refer to Figure 1 and Figure 5 , the asphalt thermal regeneration equipment further includes a rotational power source 110, a stirring shaft 111, and blades 112;

[0102] The stirring shaft 111 is rotatably installed in the main body 1 of the thermal regeneration furnace. The blade 112 is fixedly installed on the stirring shaft 111, and the rotational power source 110 drives the stirring shaft 111 to rotate.

[0103] Here, the rotational power source 110 is a motor, and the motor can be fixedly installed at the upper end of the main body 1 of the thermal regeneration furnace by screws; the shaft end of the motor passes through the upper end of the main body 1 of the thermal regeneration furnace and reaches the inside of the inner cavity 102 of the thermal regeneration furnace.

[0104] Here, the stirring shaft 111 is cylindrical, and the stirring shaft 111 is inside the inner cavity 102 of the thermal regeneration furnace and is connected to the shaft end of the motor.

[0105] Here, the maximum diameter of the blade 112 is smaller than the inner diameter of the inner cavity 102 of the thermal regeneration furnace; the form of the blade 112 is not limited, and it can be rectangular or oval.

[0106] Here, the connection method between the blade 112 and the stirring shaft 111 is not limited, and it can be welded or locked by deformation.

[0107] Here, the material of the blade 112 is not limited, and it can be stainless steel or alloy steel.

[0108] Through this setting, the asphalt mixture can be stirred more evenly and the mixing effect is better.

[0109] The specific usage method of this embodiment is as follows:

[0110] During use, the old asphalt, new asphalt, and new aggregate are mixed into an asphalt mixture according to a ratio. The asphalt mixture is put into the inner cavity 102 of the thermal regeneration furnace through the feeding component 107. After being put in, the baffle 1075 will automatically close the feeding pipeline 1071. Heat the heat-conducting oil and start the motor to stir the asphalt mixture. The waste gas is purified by the blower 5 and the plasma purifier 6 and then flows into the pressure tank 8 for pressurization. Part of the waste gas preheats the asphalt regenerant through the waste heat gas main pipeline 4. When the waste gas pressure is too high, the excess waste gas is discharged through the pressure relief pipeline 10. When it is necessary to add the asphalt regenerant, start the solenoid valve 9. The waste gas flows into the storage cavity 201 through the pressure boosting branch 7 to pressurize and heat the asphalt regenerant. The asphalt regenerant is atomized and sprayed into the inside of the main body 1 of the thermal regeneration furnace through the atomizing nozzle 301 due to the pressure and is mixed with the asphalt mixture. After the reaction ends, open the manual valve 109 and discharge the new asphalt mixture through the discharge pipeline 108.

[0111] The above embodiments are only illustrative of the principles and effects of the present utility model and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. An asphalt hot recycling device, characterized in that, The asphalt hot recycling equipment includes: A hot recycling furnace main body, at the upper end of which there is an exhaust port for exhausting waste gas; A regenerant storage box, in which there are two cavities. One of the cavities is a storage cavity for storing asphalt regenerant, and the other cavity is arranged around the side wall of the storage cavity. The other cavity is a gas heating cavity. The material of the regenerant storage box is a heat-conducting material; A regenerant atomizing pipe, one end of which is communicated with the storage cavity, and the other end of which penetrates through the side wall of the hot recycling furnace main body and extends into the interior of the hot recycling furnace main body; A waste heat gas main pipeline, one end of which is communicated with the exhaust port, and the other end of which is communicated with the gas heating cavity.

2. The asphalt hot recycling equipment according to claim 1, characterized in that, The asphalt hot recycling equipment further includes a blower and a plasma purifier; The blower and the plasma purifier are installed on the waste heat gas main pipeline.

3. An asphalt hot recycling device according to claim 2, characterized in that, The asphalt hot recycling equipment further includes a pressurization branch, a pressurization tank, a solenoid valve, a pressure relief pipeline and a pressure relief valve; The pressurization tank is installed on the waste heat gas main pipeline, and the plasma purifier is located between the pressurization tank and the blower; One end of the pressurization branch is communicated with the waste heat gas main pipeline, and the other end of the pressurization branch is communicated with the storage cavity. The intersection point of the pressurization branch and the waste heat gas main pipeline is located between the pressurization tank and the regenerant storage box, and the solenoid valve is installed on the pressurization branch; The pressure relief pipeline is communicated with the gas heating cavity, and the pressure relief valve is installed on the pressure relief pipeline.

4. The asphalt hot recycling equipment according to claim 3, wherein, A number of atomizing nozzles are equidistantly installed on the regenerant atomizing pipe, and all the atomizing nozzles are located inside the hot recycling furnace main body.

5. The asphalt hot recycling equipment according to claim 1, characterized in that, There are two chambers inside the hot recycling furnace main body. One of the chambers is the inner cavity of the hot recycling furnace for storing asphalt mixture, and the other chamber is arranged around the side wall of the inner cavity of the hot recycling furnace. The other chamber is a heat-conducting cavity; The bottom of the heat-conducting cavity is communicated with two pipe joints that vertically penetrate the side wall of the hot recycling furnace main body. One of the pipe joints is an oil inlet end, and the other pipe joint is an oil outlet end.

6. The asphalt thermal regeneration device according to claim 5, wherein, The hot recycling furnace main body further includes a feeding component, a discharging pipeline and a manual valve; The feeding component is located at the upper end of the hot recycling furnace main body and is communicated with the inner cavity of the hot recycling furnace; The discharging pipeline is located at the lower end of the hot recycling furnace main body and is communicated with the inner cavity of the hot recycling furnace; The manual valve is fixedly installed on the discharging pipeline.

7. The asphalt hot recycling equipment according to claim 6, characterized in that, The feeding component includes a feeding pipeline, a guide rod, a spring, a limit block and a baffle plate; The feeding pipeline is communicated with the inner cavity of the hot recycling furnace; The baffle plate is installed inside the feeding pipeline and opens and closes the feeding pipeline. One end of the baffle plate is rotatably connected to the inner wall of the feeding pipeline; One end of the guide rod abuts against the baffle plate, and the other end of the guide rod slides out of the side wall of the feeding pipeline. The sliding direction of the guide rod, the rotation axis of the baffle plate and the center line of the feeding pipeline are perpendicular to each other in pairs; The limit block is fixed at the end of the guide rod that slides out of the feeding pipeline; The spring is sleeved on the guide rod. One end of the spring is fixedly connected to the limit block, and the other end of the spring is fixedly connected to the outer wall of the feeding pipeline.

8. An asphalt hot recycling device according to claim 1, characterized in that The asphalt hot recycling equipment further includes a rotational power source, a stirring shaft and blades; The stirring shaft is rotatably installed in the main body of the thermal regeneration furnace, the blades are fixedly installed on the stirring shaft, and the rotation power source drives the stirring shaft to rotate.

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