A heating device suitable for production of recycled materials under different working conditions

Abstract

The application provides a heating device suitable for production of recycled materials under different working conditions, comprising a cylinder body extending along a first direction and externally sleeved with a plurality of supporting rings; the number of the supporting rings is not less than two, which are arranged along the first direction and fixedly connected with the cylinder body; a driving assembly is arranged on a base corresponding to the supporting rings; the heating assembly comprises a large burner and a small burner; a temperature measuring assembly is installed on the cylinder body and connected with the heating assembly through a PLC module; the PLC module is configured to receive a temperature measuring signal and control the opening degree of the heating assembly. According to the technical scheme provided by the embodiment of the application, the large burner and the small burner are arranged side by side at one end of the cylinder body, and different burners or two burners can be selected for heating according to the actual production capacity; the seamless coverage of all working conditions from low load to high load is realized, and the problems of frequent start-stop and unstable flame caused by the adjustment ratio limitation of the traditional single burner are solved.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a heating device adapted to the production of recycled materials under different working conditions. Background Technology

[0002] Currently, the most widely used recycling process for asphalt pavement materials is hot recycling technology at the asphalt pavement plant. This mainly involves adding a recycling unit to heat the recycled material, achieving material recombination or restoring its bonding properties. Its production process generally has the following characteristics: 1. The asphalt mixture needs strict temperature control (120-140℃). Excessive temperature leads to aging, while low temperature causes bonding failure. 2. Municipal maintenance requires small-batch production, while new construction projects require continuous large-scale production. The current mainstream heating method relies on burners to provide the heat source. Technical implementation includes single-burner drum heating: directly heating the rotating drum through a gas / oil burner, with hot flue gas exchanging heat with the material. However, the burner has a core bottleneck: the adjustment ratio. The burner adjustment ratio is the ratio of the maximum power to the minimum stable combustion power. When this range is exceeded, the flame extinguishes, requiring frequent start-ups and shutdowns, or the flame length becomes uncontrolled, leading to localized overheating and material deterioration.

[0003] The above-mentioned recycled material heating production has the following problems: First, the production of recycled materials requires frequent response to fluctuations in output (such as 20%-100% capacity). Such limitations in adjustment ratio will lead to insufficient control precision, deterioration of recycled material quality, incomplete combustion of hot materials, and excessive CO emissions. Second, in order to cope with small-batch production, frequent start-ups and shutdowns will cause the recycling drum to switch between hot and cold, resulting in severe adhesion of the drum wall. Therefore, the above problems urgently need to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a heating device that is suitable for the production of recycled materials under different working conditions.

[0005] This application provides a heating device adapted to the production of recycled materials under different working conditions, including... A cylindrical body, which extends along a first direction and is fitted with a support ring on its outside; The number of the support rings is not less than two, they are arranged along the first direction and fixedly connected to the cylinder; A base, on which a driving component is provided corresponding to the support ring, for supporting the cylinder and driving its rotation; A heating assembly, comprising a large burner and a small burner, for selectively heating the cylinder; A temperature measuring component is mounted on the cylinder and connected to the heating component via a PLC module; The PLC module is configured to receive temperature measurement signals and control the opening degree of the heating component.

[0006] Furthermore, The base is also equipped with a discharge box; The discharge box is fixedly installed on the base and located at the end of the cylinder away from the heating component; The end of the cylinder extends into the interior of the discharge box and is rotatably connected to the discharge box.

[0007] Furthermore, The discharge box is also equipped with a discharge port and a flue gas outlet; The discharge port is located at the end of the discharge box away from the cylinder; The flue gas outlet is located at the top of the discharge box.

[0008] Furthermore, The temperature measuring component includes a first temperature sensor; The first temperature sensor is installed on the discharge box and located at the flue gas outlet; The first temperature sensor is signal-connected to the PLC module and is configured to monitor the temperature and upload information to the PLC module. The PLC module is configured to control the heating component to reduce its output when the detected temperature exceeds the set temperature.

[0009] Furthermore, The temperature measuring component includes a second temperature sensor; The second temperature sensor is installed on the discharge box and located at the discharge port; The second temperature sensor is connected to the PLC module via a signal and is configured to monitor the temperature and upload information to the PLC module. The PLC module is configured to control the heating component to reduce its output when the detected temperature exceeds the set temperature.

[0010] Furthermore, The temperature measurement component includes a third temperature sensor; The third temperature sensor is mounted on the cylinder and is located in the middle of the cylinder; The third temperature sensor is connected to the PLC module via a signal and is configured to monitor the temperature and upload information to the PLC module. The PLC module is configured to determine when the detected temperature reaches the set temperature and control the small burner to stop preheating.

[0011] Furthermore, A fourth temperature sensor and a fifth temperature sensor are respectively provided on both sides of the third temperature sensor along the first direction on the cylinder body, for real-time monitoring of the temperature of the cylinder body.

[0012] Furthermore, The large burner and the small burner are fixedly connected to the base, and their output ends extend into the interior of the cylinder.

[0013] The advantages and positive effects of this application are: This technical solution sets up a large burner and a small burner side by side at one end of the cylinder. Depending on the actual production capacity, different burners can be selected or two burners can be used simultaneously for heating. This achieves seamless coverage of all operating conditions from low load to high load, solving the problems of frequent start-stop and unstable flame caused by the adjustment ratio limitation of traditional single burners. At the same time, the small burner can also preheat the cylinder before production, effectively preventing recycled material from adhering to the cylinder wall when the cylinder is cold, reducing the cleaning frequency, and improving the reliability of continuous operation of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a heating device adapted to the production of recycled materials under different working conditions, provided in an embodiment of this application.

[0015] The text labels in the figure are as follows: 100-Cylinder; 110-Support ring; 120-Third temperature sensor; 130-Fourth temperature sensor; 140-Fifth temperature sensor; 200-Base; 210-Large burner; 220-Small burner; 300-Discharge box; 310-First temperature sensor; 320-Second temperature sensor. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0017] Please refer to Figure 1This embodiment provides a heating device adapted to the production of recycled materials under different working conditions, including a cylinder 100 extending along a first direction and having a support ring 110 sleeved on its exterior; the support ring 110 is not less than two, arranged along the first direction and fixedly connected to the cylinder 100; a base 200, on which a driving assembly is provided corresponding to the support ring 110 for supporting the cylinder 100 and driving its rotation; a heating assembly including a large burner 210 and a small burner 220 for selectively heating the cylinder 100; and a temperature measuring assembly mounted on the cylinder 100 and connected to the heating assembly via a PLC module; the PLC module is configured to receive temperature measurement signals and control the opening degree of the heating assembly.

[0018] In this embodiment, the cylinder 100 extends along a first direction and is fitted with a plurality of support rings 110 on its outside; the number of support rings 110 is not less than two, arranged at intervals along the first direction, and fixedly connected to the cylinder 100 by means of welding or bolt connection, etc., for supporting the cylinder and transmitting driving force.

[0019] In this embodiment, the base 200 is located below the cylinder 100, and a driving component is provided on it for each support ring 110. The driving component includes a motor, a reducer, a transmission roller, and a driven roller, etc., which are used to support the cylinder 100 and drive it to rotate continuously around its own axis, thereby realizing uniform heating and conveying of materials in the cylinder.

[0020] In this embodiment, the heating assembly is located at one end of the cylinder 100, including a large burner 210 and a small burner 220. The large burner 210 and the small burner 220 are arranged side by side for selectively heating the cylinder 100 according to actual production needs. For example, under low load conditions, only the small burner 220 can be activated, while under medium to high load conditions, the large burner 210 can be activated or both can be operated simultaneously to achieve flexible power adjustment.

[0021] In this embodiment, the temperature measuring component is installed on the cylinder 100 and includes multiple temperature sensors for real-time monitoring of the temperature in different areas of the cylinder; the temperature measuring component is connected to the PLC module via a signal line and transmits the collected temperature signal to the PLC module.

[0022] In this embodiment, the PLC module is configured to receive the temperature measurement signal and adjust the opening of the large burner 210 and the small burner 220 in real time according to the preset temperature threshold and control logic, thereby controlling the output power of the heating component and ensuring that the temperature inside the cylinder is stable within a suitable range, avoiding material aging or adhesion problems caused by temperature fluctuations.

[0023] In a preferred embodiment, the base 200 is further provided with a discharge box 300; the discharge box 300 is fixedly installed on the base 200 and located at the end of the cylinder 100 away from the heating component; the end of the cylinder 100 extends into the interior of the discharge box 300 and is rotatably connected to the discharge box 300.

[0024] In this embodiment, the end of the cylinder 100 extends and is inserted into the internal cavity of the discharge box 300; in order to achieve sealing and connection between the cylinder 100 and the fixed discharge box 300 during rotation, the end of the cylinder 100 and the discharge box 300 are rotatably connected.

[0025] Specifically, a rotary sealing structure can be set between the two, allowing the cylinder 100 to rotate freely while preventing material and hot gas from leaking from the interface.

[0026] In a preferred embodiment, the discharge box 300 is further provided with a discharge port and a flue gas port; the discharge port is located at the end of the discharge box 300 away from the cylinder 100; the flue gas port is located at the top of the discharge box 300.

[0027] In this embodiment, the discharge box 300 serves as a collection and guiding component for materials and flue gas, and its structural design is of paramount importance; the discharge box 300 is provided with a discharge port and a flue gas port.

[0028] In this embodiment, the discharge port is located on the end of the discharge box 300 away from the cylinder 100; the recycled material that has been heated by the cylinder 100 is finally stably discharged from the discharge port under the action of rotation and propulsion, and enters the next process.

[0029] In this embodiment, the flue gas outlet is located on the top of the discharge box 300. The high-temperature flue gas generated during the heating process flows through the entire cylinder 100 and then collects in the discharge box 300. Due to its heat rise effect, this flue gas is naturally guided from the top flue gas outlet to the subsequent dust removal or venting system.

[0030] In a preferred embodiment, the temperature measuring component includes a first temperature sensor 310; the first temperature sensor 310 is mounted on the discharge box 300 and located at the flue gas outlet; the first temperature sensor 310 is signal-connected to a PLC module and configured to monitor the temperature and upload information to the PLC module; the PLC module is configured to control the heating component to reduce its output after determining that the detected temperature is greater than a set temperature.

[0031] In this embodiment, the first temperature sensor 310 is directly installed on the box structure of the discharge box 300, and its detection end is precisely located at the flue gas outlet at the top of the discharge box 300, for directly monitoring the temperature of the flue gas discharged from there.

[0032] In this embodiment, the first temperature sensor 310 establishes a stable signal connection with the PLC module through a signal cable; it is configured to continuously monitor the exhaust temperature of the flue gas outlet and upload a real-time signal representing the temperature value to the PLC module.

[0033] In this embodiment, the PLC module has a preset temperature setting value corresponding to the process requirements; it is configured to receive the temperature signal from the first temperature sensor 310 and compare and make logical judgments with the received detected temperature value and the preset temperature value in real time.

[0034] When the logic judgment result of the PLC module is that the detected temperature is greater than the set temperature, it indicates that the flue gas temperature is too high and there is a potential risk of fire. At this time, the PLC module will immediately output a control signal to instruct the heating component to reduce its output power, thereby causing the flue gas temperature to drop back to a reasonable process range, realizing over-temperature protection and precise control of the heating process.

[0035] In a preferred embodiment, the temperature measuring component includes a second temperature sensor 320; the second temperature sensor 320 is mounted on the discharge box 300 and located at the discharge port; the second temperature sensor 320 is signal-connected to the PLC module and configured to monitor the temperature and upload information to the PLC module; the PLC module is configured to control the heating component to reduce its output after determining that the detected temperature is greater than the set temperature.

[0036] In this embodiment, the second temperature sensor 320 is directly installed on the housing structure of the discharge box 300, and its detection end is precisely arranged at the discharge port of the discharge box 300 to directly monitor the temperature of the recycled material that is about to be discharged.

[0037] In this embodiment, the second temperature sensor 320 is connected to the PLC module via a signal line. It is configured to continuously monitor the material temperature at the outlet and upload the real-time temperature signal to the PLC module.

[0038] In this embodiment, the PLC module is internally set with a temperature setpoint that matches the material process requirements; it continuously receives temperature signals from the second temperature sensor 320 and executes a logic judgment program.

[0039] When the PLC module detects that the output temperature is higher than the set temperature, it indicates that the material is overheating. At this time, the PLC module will immediately generate and issue control commands to drive the heating components to reduce their heat output power, thereby ensuring that the output temperature is stably controlled within a suitable process range and effectively preventing quality deterioration caused by material overheating.

[0040] In a preferred embodiment, the temperature measuring component includes a third temperature sensor 120; the third temperature sensor 120 is mounted on the cylinder 100 and located in the middle of the cylinder 100; the third temperature sensor 120 is signal-connected to a PLC module and configured to monitor the temperature and upload information to the PLC module; the PLC module is configured to determine that the detected temperature has reached the set temperature and control the small burner 220 to stop preheating.

[0041] In this embodiment, the third temperature sensor 120 is directly installed on the outer wall of the cylinder 100, and its detection point is precisely arranged at the middle position of the axial length of the cylinder 100, so as to directly monitor the temperature of the cylinder in this critical area.

[0042] In this embodiment, the third temperature sensor 120 is wirelessly connected to the PLC module; it is configured to continuously monitor the temperature at the middle position of the cylinder and upload the real-time temperature signal to the PLC module.

[0043] In this embodiment, the PLC module is internally set with a temperature setpoint that matches the preheating process requirements; it continuously receives temperature signals from the third temperature sensor 120 and executes a logic judgment program.

[0044] When the PLC module determines that the temperature at the middle position of the cylinder has reached the preset preheating temperature, it indicates that the cylinder preheating has been completed. At this time, the PLC module will immediately generate and issue a control command to drive the small burner 220 to stop working and end the preheating stage. This control logic ensures the accuracy and efficiency of the preheating process, effectively avoiding energy waste and equipment damage that may be caused by overheating.

[0045] In a preferred embodiment, a fourth temperature sensor 130 and a fifth temperature sensor 140 are respectively provided on both sides of the third temperature sensor 120 along the first direction on the cylinder 100, for real-time monitoring of the temperature of the cylinder 100.

[0046] In this embodiment, the fourth temperature sensor 130 and the fifth temperature sensor 140 are arranged at intervals along the axial direction of the cylinder 100 with the third temperature sensor 120. Together, they form a temperature monitoring array covering the key heating area of ​​the cylinder 100. These sensors are all fixedly installed on the outer wall of the cylinder 100 and rotate together with the cylinder 100.

[0047] In this embodiment, the fourth temperature sensor 130 and the fifth temperature sensor 140 are also wirelessly connected to the PLC module and are configured to monitor the wall temperature of the cylinder 100 at their respective locations in real time and transmit continuous temperature signals to the PLC module.

[0048] In a preferred embodiment, the large burner 210 and the small burner 220 are respectively fixedly connected to the base 200, and their output ends extend into the interior of the cylinder 100.

[0049] In this embodiment, the output ends of the large burner 210 and the small burner 220, namely the flame nozzle and the hot gas passage, extend forward and pass through the end opening of the cylinder 100, precisely extending into the internal space of the cylinder 100; this arrangement allows the high-temperature flame and hot flue gas generated by combustion to directly enter the interior of the cylinder 100 and fully exchange heat with the recycled material inside the cylinder.

[0050] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A heating device adapted to the production of recycled materials under different working conditions, characterized in that, include A cylindrical body (100) extends along a first direction and is fitted with a support ring (110) on its outside. The number of the support rings (110) is not less than two, arranged along the first direction and fixedly connected to the cylinder (100); A base (200) is provided on the base (200) corresponding to the support ring (110), which is used to support the cylinder (100) and drive its rotation; A heating assembly, comprising a large burner (210) and a small burner (220), for selectively heating the cylinder (100); A temperature measuring component is installed on the cylinder (100) and connected to the heating component via a PLC module; The PLC module is configured to receive temperature measurement signals and control the opening degree of the heating component.

2. The heating device adapted to the production of recycled materials under different working conditions according to claim 1, characterized in that, The base (200) is also provided with a discharge box (300); The discharge box (300) is fixedly installed on the base (200) and located at the end of the cylinder (100) away from the heating assembly; The end of the cylinder (100) extends into the interior of the discharge box (300) and is rotatably connected to the discharge box (300).

3. The heating device adapted to the production of recycled materials under different working conditions according to claim 2, characterized in that, The discharge box (300) is also provided with a discharge port and a flue gas port; The discharge port is located at the end of the discharge box (300) away from the cylinder (100); The flue gas outlet is located at the top of the discharge box (300).

4. The heating device adapted to the production of recycled materials under different working conditions according to claim 3, characterized in that, The temperature measuring component includes a first temperature sensor (310); The first temperature sensor (310) is installed on the discharge box (300) and located at the flue gas outlet; The first temperature sensor (310) is connected to the PLC module and configured to monitor the temperature and upload information to the PLC module; The PLC module is configured to control the heating component to reduce its output when the detected temperature exceeds the set temperature.

5. The heating device adapted to the production of recycled materials under different working conditions according to claim 3, characterized in that, The temperature measuring component includes a second temperature sensor (320); The second temperature sensor (320) is installed on the discharge box (300) and located at the discharge port; The second temperature sensor (320) is connected to the PLC module via a signal and is configured to monitor the temperature and upload information to the PLC module. The PLC module is configured to control the heating component to reduce its output when the detected temperature exceeds the set temperature.

6. The heating device according to claim 1, adapted to the production of recycled materials under different working conditions, is characterized in that, The temperature measuring component includes a third temperature sensor (120); The third temperature sensor (120) is mounted on the cylinder (100) and located in the middle of the cylinder (100); The third temperature sensor (120) is connected to the PLC module and is configured to monitor the temperature and upload information to the PLC module. The PLC module is configured to determine when the detected temperature reaches the set temperature and control the small burner (220) to stop preheating.

7. The heating device according to claim 6, adapted to the production of recycled materials under different working conditions, is characterized in that, A fourth temperature sensor (130) and a fifth temperature sensor (140) are respectively provided on both sides of the third temperature sensor (120) along the first direction on the cylinder (100) for real-time monitoring of the temperature of the cylinder (100).

8. The heating device according to claim 1, adapted to the production of recycled materials under different working conditions, is characterized in that, The large burner (210) and the small burner (220) are fixedly connected to the base (200) respectively, and their output ends extend into the interior of the cylinder (100).

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