Raw material preheating and mixing device for asphalt waterproofing membrane production

Abstract

The application discloses a raw material preheating and mixing device for asphalt waterproof coiled material production, which comprises a rack, a buried box arranged below the rack, a mounting cover and an electric control box bolted to the rear end face of the rack, an installation shaft penetrating through the rack and the mounting cover through a bearing, and a flange disc sleeved with the front end side wall of the installation shaft. The self-locking forward and reverse motor is matched with the meshing transmission of the main gear and the driven gear, so that the outer shell is driven to alternately rotate by 180 degrees in one direction, the asphalt coiled material can alternately enter and exit the interiors of the first tank body and the second tank body, the double-tank body rotation work mode is matched, the driving motor drives the stirring shaft and the stirring blade to rotate and stir in the tank body, the double mixing uniform mode of the tank body alternating rotation material changing and the internal stirring structure dynamic stirring is formed, and the problem of the stirring dead angle caused by the assembly gap between the stirring structure and the tank wall of the traditional stirring equipment is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of asphalt waterproof membrane production technology, and in particular to a raw material preheating and mixing device for asphalt waterproof membrane production. Background Technology

[0002] Asphalt waterproof membrane is a flexible, rollable sheet waterproof material made from asphalt or polymer-modified asphalt as the main raw material and fibers, fabrics, or polymer films as the reinforcing base. Some products have powdered, granular, or film-like isolation covering materials on the surface. It is mainly used in building roofs, underground projects, and other parts to prevent water penetration. In the actual production of asphalt waterproof membrane, a preheating and mixing device is required to complete the preheating and mixing treatment of the raw materials for the asphalt waterproof membrane.

[0003] However, existing preheating and mixing devices have several shortcomings in actual use. First, the device relies on a stirring structure to agitate and mix the asphalt waterproofing membrane raw materials in the tank. There is an assembly gap between the stirring structure and the tank wall, making it difficult for some raw materials near this gap to be effectively agitated, creating dead zones. These areas do not receive sufficient mixing and uniform preheating, resulting in poor mixing uniformity and uneven heating, directly affecting the processing quality of the subsequent asphalt waterproofing membrane products. Second, the entire preheating and mixing device relies on anchor bolts for installation. The fixed assembly between the foundations ensures the stability of the entire machine's operation. However, the anchor bolts are directly exposed to the external environment, making them susceptible to accidental contact with debris, tools, or operators at the work site. This can not only cause the bolts to loosen and reduce the overall reliability of the device, but also pose a safety hazard of bumping and injuring people. Thirdly, when it is necessary to inspect and maintain the internal components of the tank, the device lacks a cooling structure. The high temperature inside the tank can only rely on natural heat dissipation from the environment, resulting in a long cooling waiting period, which prolongs the preparation time before maintenance, reduces the overall production and maintenance efficiency, and delays the production progress of asphalt waterproof membrane. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a raw material preheating and mixing device for the production of asphalt waterproof membranes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a preheating and mixing device for raw materials in the production of asphalt waterproof membrane, comprising a frame, an underground box disposed below the frame, a mounting cover and an electrical control box bolted to the rear end face of the frame, a mounting shaft passing through the frame and the mounting cover via a bearing, a flange sleeved on the front end side wall of the mounting shaft, and a mounting screw passing through the flange hole of the flange, a driven gear sleeved on the side wall of the mounting shaft, a self-locking forward and reverse motor mounted on the rear end face of the mounting cover, and a main gear sleeved on the output end of the self-locking forward and reverse motor, a housing being mounted on the front ends of multiple sets of mounting screws, a mounting nut being fitted onto the side wall of each set of mounting screws, and a pressure relief pipe fixedly passing through one side of the housing, the pressure relief... A pressure relief valve is provided on the side wall of the pressure pipe. An air inlet pipe passes through the other side of the outer shell. A first tank is fixedly passed through the upper part of the outer shell, and a second tank is fixedly passed through the lower part of the outer shell. A guide hopper passes through the facing surfaces of the first and second tanks. The facing ends of the two sets of guide hoppers are connected. A discharge hopper passes through the lower part of the second tank, and a first electric slide valve is installed at the discharge end of the discharge hopper. A sealing cover is bolted to the upper part of the first tank. A stirring shaft passes through the first tank and the sealing cover via a bearing. A drive motor is bolted to the upper part of the sealing cover, and a first pulley is sleeved on the output end of the drive motor. A second pulley is sleeved on the upper side wall of the stirring shaft. A transmission belt is sleeved on the side walls of the first and second pulleys together.

[0006] As a further description of the above technical solution:

[0007] The underground box has two sets of guide rods installed inside, and the side walls of the two sets of guide rods are slidably sleeved with a lifting plate. The upper part of the lifting plate is equipped with four sets of connecting screws, and the side wall of each set of connecting screws is sleeved with a connecting nut. The upper part of the underground box has four sets of first through holes, and the lower part of the frame has four sets of second through holes. A sealing plug is inserted between the frame and the underground box. The inner bottom surface of the frame is equipped with four sets of external threaded pipes, and the side wall of each set of external threaded pipes is sleeved with a threaded cap.

[0008] As a further description of the above technical solution:

[0009] The connecting screw and the connecting nut are threaded together.

[0010] As a further description of the above technical solution:

[0011] The externally threaded tube is threadedly fitted with the threaded cap.

[0012] As a further description of the above technical solution:

[0013] A second electric slide gate valve is installed at the external end of the air inlet pipe, and a fan is installed at the air inlet end of the second electric slide gate valve. A filter box is installed at the air inlet end of the fan, and a filter screen is penetrated through the surface of the filter box. An air pump is bolted to the rear end of the frame, and an air guide pipe is snapped to the output end of the air pump. An air jet disc is sleeved at one end of the air guide pipe. Electric heaters and temperature sensors are penetrated through both sides of the outer shell.

[0014] As a further description of the above technical solution:

[0015] Multiple unidirectional nozzles are inserted into the end face of the jet disc.

[0016] As a further description of the above technical solution:

[0017] The electrical control box contains a controller and a battery. The controller is electrically connected to the battery, two sets of electric heaters, two sets of temperature sensors, a first electric gate valve, a drive motor, a self-locking forward and reverse motor, an air pump, a second electric gate valve, and a fan via wires.

[0018] As a further description of the above technical solution:

[0019] The stirring shaft is fitted with stirring blades on its sidewall.

[0020] As a further description of the above technical solution:

[0021] A feed pipe extends through the upper part of the first tank, and a control valve is installed on the side wall of the feed pipe.

[0022] As a further description of the above technical solution:

[0023] The main gear and the driven gear mesh with each other.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention utilizes a self-locking reversible motor in conjunction with the meshing transmission of the main gear and driven gear to drive the outer shell to rotate alternately in one direction by 180 degrees. This allows the asphalt membrane raw material to alternately enter and exit the first and second tanks. Combined with the dual-tank rotation operation mode, and the drive motor driving the stirring shaft and stirring blades to rotate and stir within the tanks, a dual mixing mode is formed, consisting of alternating tank rotation for material exchange and dynamic stirring of the internal stirring structure. This effectively solves the problem of dead zones in traditional mixing equipment caused by assembly gaps between the stirring structure and the tank wall. The raw material inside the tank is continuously turned and repositioned as the tanks switch positions, ensuring thorough stirring and frying. Combined with the all-area heating effect of the electric heaters on both sides, the raw material is heated more evenly, improving mixing consistency. This avoids the problems of uneven mixing and excessive temperature difference from the source, effectively ensuring the processing quality of the subsequent asphalt waterproof membrane products.

[0026] 2. This invention abandons the traditional method of fixing with exposed anchor bolts and adopts a built-in fixing structure with an underground box. The core fixing components such as connecting screws and lifting plates are housed inside the underground box. Two sets of guide rods inside the underground box provide sliding guidance for the lifting plate. The entire equipment is fixed by the plug-in connection between the frame and the underground box, and the threaded locking of the connecting screws and connecting nuts. This avoids the problem of exposed anchor bolts, which are easily touched by debris, tools, or operators on site. It effectively prevents the fixing bolts from loosening and the equipment's fixing reliability from decreasing. It also avoids the safety hazard of bolts hitting people. In addition, the matching sealing plug, external threaded tube, and threaded cap can seal and protect the assembly gaps, preventing dust and debris from entering the fixing structure, ensuring the long-term stable operation of the fixing components, and extending the service life of the equipment fixing structure.

[0027] 3. This invention is equipped with an independent air-cooling structure. A clean air supply channel is formed by a fan, filter box, and air inlet pipe. It is combined with an air pump, air guide pipe, and jet plate with one-way nozzle to achieve precise jet cooling. When the equipment needs to be shut down for maintenance, the air-cooling system can be started. The filter screen that runs through the surface of the filter box can filter impurities in the outside air and prevent dust from entering the shell and causing pollution. The second electric slide valve controls the air intake. After the clean air flows into the shell, it can quickly remove the high-temperature heat air in the tank, shorten the cooling waiting period of the tank, reduce the preparation time before maintenance, effectively improve the efficiency of equipment maintenance, and avoid the equipment being shut down for a long time, which will delay the overall production progress of asphalt waterproof membrane. At the same time, two sets of temperature sensors can monitor the internal temperature of the first tank and the second tank in real time to achieve precise temperature control and ensure the standardization of preheating and cooling operations. The airflow sprayed by the jet plate can blow away impurities on the surface of the filter screen and prevent the filter screen from clogging. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a raw material preheating and mixing device for the production of asphalt waterproof membrane according to the present invention;

[0030] Figure 2 This is a schematic diagram of the frame structure proposed in this invention;

[0031] Figure 3 This is a cross-sectional view of the outer casing proposed in this invention;

[0032] Figure 4This is a perspective view of the main gear and driven gear proposed in this invention;

[0033] Figure 5 This is a perspective view of the stirring shaft proposed in this invention;

[0034] Figure 6 This is a cross-sectional view of the right-angle frame and underground box proposed in this invention;

[0035] Figure 7 The present invention proposes Figure 1 Enlarged view of point A in the middle;

[0036] Figure 8 The present invention proposes Figure 1 Enlarged view of point B;

[0037] Figure 9 The present invention proposes Figure 4 Enlarged view of point C;

[0038] Figure 10 The present invention proposes Figure 6 Enlarged view of point D.

[0039] Legend:

[0040] 1. Frame; 2. Mounting cover; 3. Mounting shaft; 4. Flange; 5. Mounting screw; 6. Mounting nut; 7. Outer shell; 8. First tank; 9. Second tank; 10. Feed hopper; 11. Electric heater; 12. Temperature sensor; 13. Discharge hopper; 14. First electric slide gate valve; 15. Sealing cover; 16. Agitator shaft; 17. Drive motor; 18. First pulley; 19. Second pulley; 20. Transmission belt; 21. Agitator blade; 22. Self-locking mechanism 23. Reverse-rotating motor; 24. Main gear; 25. Driven gear; 26. Air pump; 27. Air guide pipe; 28. Air jet disc; 29. ​​Air inlet pipe; 20. Second electric slide gate valve; 31. Fan; 32. Filter box; 33. Filter screen; 34. Underground box; 35. First through hole; 36. Second through hole; 37. Guide rod; 38. Lifting plate; 39. Connecting screw; 40. Connecting nut; 41. Sealing plug; 42. External threaded pipe; 43. Threaded cap. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] In the description of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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 the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in the invention can be understood according to the specific circumstances:

[0043] Please refer to Figures 1 to 10 As shown,

[0044] A preheating and mixing device for raw materials in the production of asphalt waterproof membrane includes a frame 1, with an underground box 33 located below the frame 1. The rear end of the frame 1 is bolted to a mounting cover 2 and an electrical control box. A mounting shaft 3 passes through the frame 1 and the mounting cover 2, rotating via bearings. A flange 4 is fixedly fitted to the outer side of the front end of the mounting shaft 3, and multiple sets of mounting screws 5 pass through the flange hole of the flange 4. A driven gear 24 is fitted to the outer side of the mounting shaft 3. A self-locking forward / reverse motor 22 is installed at the rear end of the mounting cover 2, with a main gear 23 fitted to the output end of the self-locking forward / reverse motor 22. The front ends of the multiple sets of mounting screws 5 are jointly fixed to a mounting shell 7, and mounting nuts 6 are fitted to the outer side of the mounting screws 5 for locking. A pressure relief pipe passes through one side of the shell 7, with a pressure relief valve fitted to the outside of the pipe to release air between the shell 7 and the tank layer, stabilizing the internal air pressure. A cloth is threaded through the other side of the shell 7. An air inlet pipe 28 is provided. The upper part of the outer shell 7 is fixedly connected to the first tank 8, and the lower part of the outer shell 7 is fixedly connected to the second tank 9. The opposite end faces of the first tank 8 and the second tank 9 are both provided with guide hoppers 10, and the opposite ends of the two sets of guide hoppers 10 are connected to each other, allowing the raw materials to flow and switch between the two tanks. The lower part of the second tank 9 is provided with a discharge hopper 13, and the discharge position of the discharge hopper 13 is equipped with a first electric slide valve 14 to control the discharge of raw materials. The upper part of the first tank 8 is equipped with a sealing cover 15 by bolts. The first tank 8 and the sealing cover 15 are connected to a stirring shaft 16 through a bearing. The upper part of the sealing cover 15 is fixed with a drive motor 17 by bolts. The output end of the drive motor 17 is sleeved with a first pulley 18, and the outer side of the upper end of the stirring shaft 16 is sleeved with a second pulley 19. The outer sides of the first pulley 18 and the second pulley 19 are jointly sleeved with a transmission belt 20. The rotation of the stirring shaft 16 is driven by the belt drive to complete the stirring and mixing of the raw materials in the tank.

[0045] Please refer to Figure 1 , Figure 2 , Figure 6 , Figure 10As shown, two sets of guide rods 36 are installed in parallel inside the underground box 33. The outer sides of the two sets of guide rods 36 are slidably connected to the lifting plate 37. The lifting plate 37 can slide smoothly vertically along the guide rods 36 to achieve height adjustment. Four sets of connecting screws 38 are vertically installed on the upper surface of the lifting plate 37. Each set of connecting screws 38 can be fitted with a connecting nut 39 to achieve threaded locking. Four sets of first through holes 34 are opened on the upper surface of the underground box 33, and four sets of second through holes 35 are correspondingly opened on the lower surface of the frame 1. The connecting screws 38 can pass through the first through holes 34 and the second through holes 35 to complete the docking assembly of the frame 1 and the underground box 33. Sealing plugs 40 are inserted into the assembly gap between the frame 1 and the underground box 33 to achieve gap sealing and dust prevention. Four sets of external threaded pipes 41 are fixedly installed on the bottom surface inside the frame 1. Each external threaded pipe 41 is fitted with a threaded cap 42 to seal and protect the port of the external threaded pipe 41, preventing foreign objects from entering the structure and ensuring the stable operation of the fixed structure of the equipment.

[0046] Please refer to Figure 10 As shown, the connecting screw 38 and the connecting nut 39 are threaded together; by tightening the thread, the lifting plate 37 and the frame 1 can be tightly locked and fixed, realizing a reliable connection between the frame 1 and the underground box 33. At the same time, the screw position of the connecting nut 39 can be adjusted to meet the flatness requirements of the equipment assembly, ensuring that the overall equipment is firmly installed and avoiding loosening or displacement during operation.

[0047] Please refer to Figure 10 As shown, the external threaded tube 41 is threadedly engaged with the threaded cap; the threaded locking achieves complete closure of the port of the external threaded tube 41, which can effectively prevent external dust, debris and moisture from entering the external threaded tube 41 and the internal assembly structure of the frame 1, forming effective protection for the fixed assembly structure at the bottom of the equipment, extending the service life of the parts, and ensuring the stability and cleanliness of the equipment installation structure.

[0048] Please refer to Figure 1 , Figure 3 and Figure 8 As shown, a second electric slide gate valve 29 is installed at the outer end of the air inlet pipe 28 to control the opening and closing of the air-cooled duct. The air inlet end of the second electric slide gate valve 29 is connected to the fan 30 to provide airflow power for air-cooled heat dissipation. A filter box 31 is installed at the air inlet end of the fan 30. A filter screen 32 is laid through the surface of the filter box 31 to filter and purify the outside air entering the duct and remove impurities from the air. An air pump 25 is fixedly installed on the rear end face of the frame 1 by bolts. The output end of the air pump 25 is snapped into a fixed air guide pipe 26. The end of the air guide pipe 26 is sleeved with a fixed jet disc 27 to output high-pressure airflow. An electric heater 11 and a temperature sensor 12 are respectively installed through the left and right sides of the outer shell 7. The electric heater 11 is used to heat the air in the tank jacket and the tank. The temperature sensor 12 can detect the operating temperature in real time and, together with the electrical control structure, realize the constant temperature operation control of the equipment.

[0049] Please refer to Figure 1 and Figure 6 As shown, multiple sets of unidirectional nozzles are inserted into the end face of the jet disk 27; the multiple sets of unidirectional nozzles are distributed in an array on the working end face of the jet disk 27. The unidirectional nozzles can only spray air in one direction, which can evenly spray the high-pressure airflow output by the air pump 25, which can blow away the impurities attached to the surface of the filter screen 32, realize the self-cleaning of the filter screen 32, and at the same time, the unidirectional structure can avoid airflow backflow, ensuring stable and efficient jet operation.

[0050] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the electrical control box contains a controller and a battery. The controller is electrically connected to the battery, two sets of electric heaters 11, two sets of temperature sensors 12, a first electric gate valve 14, a drive motor 17, a self-locking forward and reverse motor 22, an air pump 25, a second electric gate valve 29, and a fan 30 via wires. The controller can uniformly regulate the start-up, shutdown, and operating parameters of each electrical component, realizing the automated and coordinated operation of processes such as equipment preheating, stirring, rotation, heat dissipation, unloading, and self-cleaning. The controller control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0051] Please refer to Figure 5 As shown, the mixing shaft 16 is equipped with mixing blades 21 on its side wall; the mixing blades 21 are distributed in the working area inside the tank, which can stir and turn the asphalt waterproof membrane raw materials put into the tank in all directions, break the traditional mixing dead corners, improve the uniformity of raw material mixing and heating, and ensure the operation effect of raw material preheating and mixing.

[0052] Please refer to Figure 7 As shown, a feed pipe runs through the upper part of the first tank 8, and a control valve is installed on the side wall of the feed pipe. The feed pipe is a dedicated channel for raw materials to be fed into the tank. The control valve can control the opening and closing and conduction status of the feed pipe, so as to achieve precise control of the raw material feed amount and feed flow. When the control valve is closed during operation, the tank can be kept in a sealed working environment to prevent heat leakage and impurities from entering the tank.

[0053] Please refer to Figure 4 As shown, the main gear 23 and the driven gear 24 mesh with each other; the main gear 23 rotates synchronously with the output end of the self-locking forward and reverse motor 22, and drives the driven gear 24 to rotate synchronously through gear meshing transmission. The driven gear 24 is fixed on the outside of the mounting shaft 3, thereby driving the mounting shaft 3, flange 4, overall shell 7, and tank structure to rotate synchronously, realizing the tank to rotate 180 degrees alternately in one direction, completing the alternating flow operation of the raw materials in the two tanks, and ensuring the mixing and preheating effect of the raw materials.

[0054] Working Principle: When this asphalt waterproof membrane production raw material preheating and mixing device is in operation, the first step is to assemble and fix the entire machine. The buried box 33 is pre-embedded inside the equipment installation foundation. Inside the buried box 33, two sets of guide rods 36 slide to support the lifting plate 37. The vertical position of the lifting plate 37 can be freely adjusted according to the assembly height of the frame 1, ensuring that the four sets of connecting screws 38 on the upper part of the lifting plate 37 are precisely aligned with the second through hole 35 at the bottom of the frame 1 and the first through hole 34 on the upper part of the buried box 33. Then, the lifting plate 37 is raised upwards, allowing the four sets of connecting screws 38 to sequentially pass through the first through hole 34 and the second through hole 35, achieving the alignment and insertion of the connecting screws 38 with the frame 1. After insertion, A connecting nut 39 is screwed onto the connecting screw 38 protruding from the upper end of the frame 1. The connecting screw 38 is tightened to the frame 1 by thread locking, thus achieving a stable connection and fixation between the frame 1 and the underground box 33. After assembly, the sealing plug 40 is inserted into the gap between the first through hole 34 and the second through hole 35 to achieve a seal. At the same time, the threaded cap 42 is screwed onto the outside of the external threaded pipe 41 on the bottom inside the frame 1 to provide dust protection for the assembly structure and ensure the stability and safety of the equipment operation. Then, the raw materials for the production of asphalt waterproof membrane are fed into the device through the feed pipe at the top of the first tank 8. The control valve on the side wall of the feed pipe is closed to complete the raw material filling, and the equipment enters the preheating and mixing stage. In this stage, the equipment is started by the controller inside the electrical control box. Two sets of electric heaters 11 work synchronously to heat the inside of the first tank 8 and the second tank 9. The temperature sensor 12 collects the temperature data inside the tank in real time and feeds it back to the controller to achieve constant temperature preheating control. At the same time, the drive motor 17 drives the stirring shaft 16 and stirring blades 21 to rotate at high speed through the transmission cooperation of the first pulley 18, the transmission belt 20 and the second pulley 19, so as to continuously stir and mix the raw materials in the tank. The stirring shaft 16 is installed between the first tank 8 and the sealing cover 15 through the bearing. The sealing cover 15 is fixed to the upper part of the first tank 8 by bolts. At the same time, the self-locking forward and reverse motor 22 starts, and the main gears 23 mesh with each other. The driven gear 24 drives the mounting shaft 3, flange 4, and overall housing 7 to rotate alternately in one direction by 180 degrees, allowing the asphalt roll material to alternately enter and exit the interior of the first tank 8 and the second tank 9. The mounting shaft 3 passes through the frame 1 and the mounting cover 2 through the bearing. Multiple sets of mounting screws 5, together with the mounting nuts 6, realize the fixed connection between the flange 4 and the housing 7. The alternating position of the two tanks, together with the internal stirring structure, forms an all-round dynamic mixing condition, eliminating the stirring blind zone and ensuring that the raw material is mixed evenly and heated evenly. After the raw material is preheated and mixed, the first electric slide valve 14 is opened. The qualified mixed raw material is collected through two sets of guide hoppers 10 and discharged through the discharge hopper 13 at the bottom of the second tank 9, completing the raw material pretreatment operation.When the equipment needs to be shut down for maintenance, the heating and stirring structures are turned off, and the fan 30 and air pump 25 are started. Outside air is purified by the filter screen 32 of the filter box 31 and then sent into the interior of the outer shell 7 through the second electric slide valve 29 and the air inlet pipe 28. The air circulates in the interlayer cavity between the outer shell 7 and the first tank 8 and the second tank 9. The high temperature heat accumulated on the outside of the tank is carried away by rapid air convection, realizing rapid cooling of the entire tank. The airflow is discharged through the pressure relief pipe. At the same time, the air pump 25 delivers the airflow to the jet plate 27 through the air guide pipe 26. High-pressure air is ejected through multiple sets of one-way nozzles on the end face of the jet plate 27. The high-pressure airflow can be reversed along the duct to blow away dust and impurities adhering to the surface of the filter screen 32, achieving self-cleaning of the filter screen 32. This prevents filter screen blockage from affecting ventilation and cooling efficiency, effectively shortening the equipment cooling waiting time. Once the temperature inside the tank drops to room temperature, equipment maintenance can be carried out. The entire process is controlled by a controller in the electrical control box, which coordinates the operation of all electrical components. The battery inside the electrical control box ensures the normal operation of the equipment's basic control functions in the event of a power outage. The entire set of equipment realizes an integrated operation process of efficient mixing and preheating of raw materials, safe and stable fixing, sandwich-type forced cooling maintenance, and filter screen self-cleaning.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A raw material preheating and mixing device for the production of asphalt waterproof membrane, comprising a frame (1), characterized in that, A ground box (33) is provided below the frame (1). A mounting cover (2) and an electrical control box are bolted to the rear end face of the frame (1). A mounting shaft (3) passes through the frame (1) and the mounting cover (2) via a bearing. A flange (4) is sleeved on the front side wall of the mounting shaft (3). A mounting screw (5) passes through the flange hole of the flange (4). A driven gear (24) is sleeved on the side wall of the mounting shaft (3). A self-locking forward and reverse motor (22) is installed on the rear end face of the mounting cover (2). A main gear (23) is sleeved on the output end of the self-locking forward and reverse motor (22). A housing (7) is installed on the front end of multiple sets of mounting screws (5). A mounting nut (6) is sleeved on the side wall of each set of mounting screws (5). A pressure relief pipe is fixedly passed through one side of the housing (7). A pressure relief valve is provided on the side wall of the pressure relief pipe. An air inlet pipe (28) passes through the other side of the housing (7). The upper part of the shell (7) is fixedly penetrated by a first tank body (8), and the lower part of the shell (7) is fixedly penetrated by a second tank body (9). The opposing surfaces of the first tank body (8) and the second tank body (9) are both penetrated by guide hoppers (10). The opposing ends of the two sets of guide hoppers (10) are connected. The lower part of the second tank body (9) is penetrated by a discharge hopper (13), and the discharge end of the discharge hopper (13) is equipped with a first electric slide valve (14). The upper part of the first tank body (8) is bolted with a sealing cover (15). The first tank body (8) and the sealing cover (15) are connected by a bearing through a stirring shaft (16). The upper part of the sealing cover (15) is bolted with a drive motor (17), and the output end of the drive motor (17) is sleeved with a first pulley (18). The upper side wall of the stirring shaft (16) is sleeved with a second pulley (19), and the side walls of the first pulley (18) and the second pulley (19) are sleeved together with a transmission belt (20).

2. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 1, characterized in that, The underground box (33) is equipped with two sets of guide rods (36), and the side walls of the two sets of guide rods (36) are slidably sleeved with a lifting plate (37). The upper part of the lifting plate (37) is equipped with four sets of connecting screws (38), and the side wall of each set of connecting screws (38) is sleeved with a connecting nut (39). The upper part of the underground box (33) is provided with four sets of first through holes (34), and the lower part of the frame (1) is provided with four sets of second through holes (35). A sealing plug (40) is inserted between the frame (1) and the underground box (33). The bottom surface of the frame (1) is equipped with four sets of external threaded pipes (41), and the side wall of each set of external threaded pipes (41) is sleeved with a threaded cap (42).

3. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 2, characterized in that, The connecting screw (38) is threadedly engaged with the connecting nut (39).

4. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 2, characterized in that, The external threaded tube (41) is threadedly engaged with the threaded cap (42).

5. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 2, characterized in that, The external end of the air inlet pipe (28) is equipped with a second electric slide valve (29), and the air inlet end of the second electric slide valve (29) is equipped with a fan (30), and the air inlet end of the fan (30) is equipped with a filter box (31). The surface of the filter box (31) is permeated with a filter screen (32). The rear end face of the frame (1) is bolted with an air pump (25), and the output end of the air pump (25) is connected to an air guide pipe (26). One end of the air guide pipe (26) is sleeved with a jet disc (27). Both sides of the outer shell (7) are permeated with an electric heater (11) and a temperature sensor (12).

6. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 5, characterized in that, Multiple unidirectional nozzles are inserted into the end face of the jet disc (27).

7. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 5, characterized in that, The electrical control box is equipped with a controller and a battery. The controller is electrically connected to the battery, two sets of electric heaters (11), two sets of temperature sensors (12), a first electric gate valve (14), a drive motor (17), a self-locking forward and reverse motor (22), an air pump (25), a second electric gate valve (29), and a fan (30) via wires.

8. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 1, characterized in that, The stirring shaft (16) has stirring blades (21) installed on its side wall.

9. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 1, characterized in that, The upper part of the first tank (8) is provided with a feed pipe, and a control valve is provided on the side wall of the feed pipe.

10. The raw material preheating and mixing device for producing asphalt waterproof membrane according to claim 1, characterized in that, The main gear (23) meshes with the driven gear (24).

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