Drying box for asphalt production

Abstract

The utility model provides a drying box for asphalt production, which comprises a box body, a box door hinged with the box body is arranged on the front side of the box body, an observation window is arranged on the box door, first sliding grooves are arranged on the left inner side wall and the right inner side wall of the box body, trays are arranged in the first sliding grooves in a sliding mode, air holes are arranged at the bottoms of the trays, and the air holes are communicated with the box body. A shaping mechanism is arranged at the top in the box body, a drying mechanism is arranged on the side face of the box body and comprises a fan, an air supply pipeline and an electric heating component, the fan is detachably arranged at one end of the air supply pipeline, the other end of the air supply pipeline is communicated with an opening formed in the side wall of the box body, and the opening is located below the tray. The electric heating component is arranged at the joint of the air supply pipeline and the opening, heat dissipation holes are formed in the top of the box body, and the fan of the drying box is detachably designed, so that disassembly and dust removal are facilitated, and the drying performance of the drying box is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of asphalt drying equipment technology, and in particular to a drying box for asphalt production. Background Technology

[0002] Asphalt is a waterproof, moisture-proof, and corrosion-resistant organic cementitious material. The production of asphalt products requires the addition of various powders mixed with the asphalt. Drying is essential during the production process to remove moisture from the raw materials and ensure the quality of the final product. In the preparation of asphalt mixtures, if the aggregates (such as crushed stone and sand) contain excessive moisture, this moisture will rapidly evaporate into steam at high temperatures, producing bubbles or an expansion effect. This can lead to an uneven internal structure of the mixture, reducing its density and strength. Therefore, drying is a crucial step in the production of asphalt products.

[0003] In the prior art, Chinese Patent Application No. 202221882074.9 discloses a rapid drying and molding device for asphalt products. This device shapes the asphalt products through a molding mechanism and dries them using a fan at the top of the drying chamber during the shaping process. After prolonged use, dust easily accumulates on the blades due to airflow and electrostatic adsorption, leading to a decrease in fan airflow, increased energy consumption, and increased noise. In this patent, the drying mechanism is fixed to the top of the drying chamber, making it difficult to clean the blades. Although it is equipped with a dustproof net, it does not disclose that the dustproof net is detachable or has other easy-to-clean structures. Excessive dust accumulation on the dustproof net will also affect the fan's airflow efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a drying box for asphalt production, which dries asphalt products by means of a detachable fan, and allows for convenient regular cleaning of the fan to prevent excessive dust accumulation.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A drying box for asphalt production includes a box body with a door hinged to the front of the box body and an observation window on the door. First sliding grooves are provided on the left and right inner side walls of the box body, and a tray is slidably disposed in the first sliding grooves. An air hole is provided at the bottom of the tray. A shaping mechanism is provided at the top of the box body, and a drying mechanism is provided on the side of the box body. The drying mechanism includes a fan, an air supply duct, and an electric heating element. The fan is detachably disposed at one end of the air supply duct, and the other end of the air supply duct is connected to an opening on the side wall of the box body located below the tray. The electric heating element is disposed at the connection between the air supply duct and the opening. A heat dissipation hole is provided at the top of the box body.

[0007] Furthermore, the shaping mechanism includes a first electric cylinder and a pressure plate. The fixed end of the first electric cylinder is connected to the top of the housing, and the telescopic end of the first electric cylinder is connected to the top of the pressure plate.

[0008] Furthermore, the air supply duct is L-shaped, with an air inlet on the upper side of the air supply duct, a fan located at the air inlet, an air outlet on the lower end face of the air supply duct, the air outlet being connected to the opening, an electric heating component located at the connection between the air outlet and the opening, and the inner diameter of the air supply duct gradually decreasing from top to bottom.

[0009] Furthermore, a second sliding groove is provided at both the upper and lower ends of the air inlet, a baffle is provided at one end of the second sliding groove, and a first magnetic attraction part is provided on the side of the baffle facing the air inlet.

[0010] Furthermore, the fan includes a frame, a motor, and fan blades. The motor is disposed in the frame, and the fan blades are connected to the rotor of the motor. A second magnetic attraction part is provided on one side of the frame.

[0011] Furthermore, the electric heating component includes a housing, with ventilation holes on both the side facing the interior of the housing and the side facing the air supply duct. A fixing post is installed inside the housing, with the top of the fixing post connected to the top of the housing. A PTC heating element is installed on the side of the fixing post.

[0012] Furthermore, a second electric cylinder is also provided in the box body. The fixed end of the second electric cylinder is connected to the side wall of the box body, and the telescopic end of the second electric cylinder is connected to the side of the tray.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model provides a drying box for asphalt production. When shaping asphalt products, the asphalt products are placed on a tray inside the box. The shaping mechanism shapes the asphalt products on the tray, while a fan blows air into the air supply duct. The flowing air is heated by an electric heating element when it passes through the connection between the air supply duct and the opening, thereby drying the asphalt products on the tray with hot air. The fan in the device is detachably installed at one end of the air supply duct. After a period of use, the fan can be easily disassembled for cleaning, thus preventing excessive dust accumulation on the fan and negatively impacting its performance, thereby improving the drying efficiency of asphalt production. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the front structure of a drying box for asphalt production provided in Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the end face structure of the air supply duct provided in Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the electric heating component provided in Embodiment 1 of this utility model.

[0019] Figure 4 This is a schematic diagram of the side cross-sectional structure of a drying box for asphalt production provided in Embodiment 2 of this utility model.

[0020] In the diagram, 1-box body, 2-box door, 3-first slide rail, 4-tray, 5-vent, 6-fan, 601-frame, 602-fan blade, 603-second magnetic suction part, 7-air supply duct, 701-air inlet, 702-air outlet, 703-second slide rail, 704-baffle, 705-first magnetic suction part, 8-opening, 9-heat dissipation hole, 10-first electric cylinder, 11-pressure plate, 12-electric heating component, 1201-box body, 1202-ventilation hole, 1203-fixing post, 1204-PTC heating element, 13-second electric cylinder. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The listed embodiments are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0022] Reference Figure 1This embodiment provides a drying box for asphalt production. The drying box includes a box body 1, with a door 2 hinged to the front of the box body 1 and an observation window on the door 2. First sliding grooves 3 are provided on the left and right inner side walls inside the box body 1, and trays 4 are slidably mounted in the first sliding grooves 3, with the left and right sides of the trays 4 respectively engaging the first sliding grooves 3 on the left and right inner side walls. The trays 4 are used to place unshaped asphalt products. Air holes 5 are provided at the bottom of the trays 4. A shaping mechanism is provided at the top of the box body for shaping the asphalt products. A drying mechanism is provided on the side of the box body 1, including a fan 6, an air supply duct 7, and an electric heating element 12. The fan 6 is detachably mounted on one end of the air supply duct 7. The other end of the air supply duct 7 is connected to an opening 8 on the side wall of the box body 1, allowing the air supply duct 7 to communicate with the interior of the box body 1. The opening 8 is located below the tray 4. The electric heating element is located at the connection between the air supply duct 7 and the opening 8. Meanwhile, ventilation holes 9 are provided on the top of the enclosure 1.

[0023] As an optional implementation, the shaping mechanism includes a first electric cylinder 10 and a pressure plate 11. The fixed end of the first electric cylinder 10 is connected to the top of the housing 1, and its telescopic end is connected to the top of the pressure plate 11, so that the telescopic end of the first electric cylinder 10 can drive...

[0024] In this embodiment, when shaping the asphalt products, the door 2 of the drying chamber is first opened, the tray 4 is pulled out, and the unshaped asphalt products are placed on the tray 4. Then, the tray 4 is pushed into the chamber 1 and the door 2 is closed. The first electric cylinder 10 drives the pressure plate 11 to move downwards to the tray 4 to shape the asphalt products in the tray 4. At the same time, the fan 6 blows air into the chamber 1 through the air supply pipe 7. The flowing air is heated by the electric heating element 12 when it passes through the connection between the air supply pipe 7 and the opening 8 to form hot air. The hot air passes through the air holes 5 at the bottom of the tray 4 to dry the asphalt products, which can effectively improve the drying effect and efficiency.

[0025] As an optional implementation, the air supply duct 7 is L-shaped, with an air inlet 701 located on the upper side, and a fan 6 positioned at the air inlet 701. An air outlet 702 is located on the lower end face of the air supply duct, and the air outlet 702 is connected to an opening 8. An electric heating element is located at the connection between the air outlet 702 and the opening 8. Simultaneously, the inner diameter of the air supply duct 7 gradually decreases from top to bottom, thereby increasing the air pressure.

[0026] Reference Figure 2 The air inlet 701 is provided with a second slide groove 703 at both the upper and lower ends. A baffle 704 is provided at one end of the second slide groove 703, and a first magnetic suction part 705 is provided on the side of the baffle 704 facing the air inlet 701.

[0027] On the other hand, the fan 6 includes a frame 601, a motor (not shown in the figure), and fan blades 602, with the motor housed within the frame 601. The fan blades 602 are connected to the rotor of the motor, allowing the motor to drive the fan blades 602 to rotate. A second magnetic attraction part 603 is provided on one side of the frame 601.

[0028] In this embodiment, the fan 6 can be installed at the air inlet 701 by sliding into the second sliding grooves 703 at both ends of the air inlet 701. After the fan 6 is installed, the first magnetic part 705 on the side of the baffle 704 is magnetically connected to the second magnetic part 603 on the side of the frame 601, thereby improving the stability of the fan 6 after installation. When it is necessary to clean the fan 6, simply slide the fan 6 out from the second sliding groove 703 to the end without the baffle 704, thereby improving the efficiency of fan installation and disassembly.

[0029] For example, the drying mechanism may be provided on only one side of the chamber 1, or it may be provided on both sides of the chamber 1.

[0030] As another alternative implementation method, refer to Figure 3 The electric heating component 12 includes a housing 1201. Ventilation holes 1202 are provided on the side of the housing 1 facing the interior and the side facing the air supply duct 7. A fixing post 1203 is provided inside the housing 1201. The top of the fixing post 1203 is connected to the top of the housing 1201. A PTC heating element 1204 is provided on the side of the fixing post 1203.

[0031] In this embodiment, the flowing air in the air supply duct 7 enters the housing 1201 through the vent 1202, is heated by the PTC heating element 1204, and then enters the chamber 1 through the vent 1202 on the other side. A PTC (Positive Temperature Coefficient) heating element is an electric heating element with a positive temperature coefficient. Its resistance increases significantly as the temperature rises, thus limiting current flow and further temperature increases. This characteristic allows the PTC heating element to automatically maintain a relatively stable temperature without additional temperature control circuitry. Because of its self-limiting temperature characteristic, even in the event of a malfunction or overheating, the PTC heating element will not continue to heat up and cause danger like traditional heating elements.

[0032] Example 2

[0033] Based on the foregoing embodiments, the difference between this embodiment and the foregoing embodiments is as follows:

[0034] Reference Figure 4The box body 1 is also equipped with a second electric cylinder 13. The fixed end of the second electric cylinder 13 is connected to the inner side wall of the box body, and its telescopic end extends into the first slide groove 3 from one end and is connected to the side of the tray 4, so that the telescopic end of the second electric cylinder 13 can drive the tray 4 to move back and forth along the first slide groove 3.

[0035] In this embodiment, the second electric cylinder 13 can control the tray 4 to extend outside the box 1, so that workers can place unshaped asphalt products or take out asphalt products that have been shaped and dried. At the same time, after the workers place or take out the asphalt products, the second electric cylinder 13 can retract the tray 4 into the box 1, eliminating the need for workers to manually operate the tray 4 and achieving a labor-saving effect.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drying oven for asphalt production, characterized in that, The drying oven includes a box body with a door hinged to the front of the box body and an observation window on the door. First sliding grooves are provided on the left and right inner side walls of the box body, and a tray is slidably mounted in the first sliding grooves. Air holes are provided at the bottom of the tray. A shaping mechanism is provided at the top of the box body, and a drying mechanism is provided on the side of the box body. The drying mechanism includes a fan, an air duct, and an electric heating element. The fan is detachably mounted at one end of the air duct, and the other end of the air duct is connected to an opening on the side wall of the box body, located below the tray. The electric heating element is located at the connection between the air duct and the opening. Heat dissipation holes are provided at the top of the box body.

2. The drying oven for asphalt production according to claim 1, characterized in that, The shaping mechanism includes a first electric cylinder and a pressure plate. The fixed end of the first electric cylinder is connected to the top of the housing, and the telescopic end of the first electric cylinder is connected to the top of the pressure plate.

3. A drying oven for asphalt production according to claim 1, characterized in that, The air supply duct is L-shaped, with an air inlet on the upper side and a fan located at the air inlet. An air outlet is located on the lower end face of the air supply duct, and the air outlet is connected to the opening. The electric heating element is located at the connection between the air outlet and the opening. The inner diameter of the air supply duct gradually decreases from top to bottom.

4. A drying oven for asphalt production according to claim 3, characterized in that, The upper and lower ends of the air inlet are provided with a second sliding groove, one end of the second sliding groove is provided with a baffle, and the side of the baffle facing the air inlet is provided with a first magnetic attraction part.

5. A drying oven for asphalt production according to claim 4, characterized in that, The fan includes a frame, a motor, and fan blades. The motor is disposed in the frame, and the fan blades are connected to the rotor of the motor. A second magnetic attraction part is provided on one side of the frame.

6. A drying oven for asphalt production according to claim 1, characterized in that, The electric heating component includes a housing, with ventilation holes on both the side facing the interior of the housing and the side facing the air supply duct. A fixing post is installed inside the housing, with the top of the fixing post connected to the top of the housing. A PTC heating element is installed on the side of the fixing post.

7. A drying oven for asphalt production according to claim 1, characterized in that, The box is also equipped with a second electric cylinder. The fixed end of the second electric cylinder is connected to the side wall of the box, and the telescopic end of the second electric cylinder is connected to the side of the tray.

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