A low-energy microwave-assisted rapid curing device for precast bricks

Abstract

The application discloses a low-energy-consumption microwave-assisted prefabricated brick rapid curing device, which comprises a heating curing box, a heat exchange recovery mechanism and a low-energy-consumption microwave generator, low-energy-consumption microwave generators are arranged at the two ends of the outer side of the heating curing box, the low-energy-consumption microwave generator adopts a high-efficiency solid-state microwave power amplifier, a heating cavity is arranged in the heating curing box, a heat-conducting corrugated metal sheet is arranged on the top wall of the heating cavity, and heat gathering grooves are arranged on the top of the heating curing box. The low-energy-consumption microwave-assisted prefabricated brick rapid curing device uses the heating cavity of the heating curing box as a prefabricated brick curing space, uses the low-energy-consumption microwave generator as a core component for generating microwave energy, and transmits the microwave energy generated by the low-energy-consumption microwave generator into the heating cavity under the guidance of the inner side waveguide metal pipe, radiates the microwave energy into the heating cavity, and performs microwave curing on the prefabricated bricks on the inner side.

Description

Technical Field

[0001] This invention relates to the field of building material production technology, specifically to a low-energy microwave-assisted rapid curing device for precast bricks. Background Technology

[0002] In the complete production process of precast bricks, the curing stage undoubtedly plays a crucial role, directly affecting the final quality and durability of the bricks. This step aims to promote the full reaction between the moisture and cementitious materials inside the brick by controlling suitable environmental conditions, such as temperature, humidity, and curing time, thereby achieving ideal hardening and strength development.

[0003] However, traditional curing methods, such as natural curing and artificial curing, have long met production needs to some extent, but have also revealed many limitations.

[0004] Existing curing devices have low processing efficiency when processing precast bricks, which affects curing efficiency and makes it impossible to achieve rapid and batch curing of precast bricks. In contrast, microwave curing consumes a lot of energy and easily causes additional heat loss, making it difficult to recover and utilize the heat. Summary of the Invention

[0005] The purpose of this invention is to provide a low-energy microwave-assisted rapid curing device for precast bricks, in order to solve the problems mentioned in the background art. Existing curing devices have low processing efficiency when processing precast bricks, which affects curing efficiency and cannot achieve rapid and batch curing of precast bricks. Furthermore, microwave curing consumes a lot of energy, which can easily cause additional heat loss and makes it difficult to recover and utilize the heat.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-energy microwave-assisted rapid curing device for precast bricks, comprising a heating and curing chamber, a heat exchange and recovery mechanism, and a low-energy microwave generator. The heating and curing chamber has low-energy microwave generators installed at both ends of its outer side. The low-energy microwave generators employ high-efficiency solid-state microwave power amplifiers. The heating and curing chamber has a heating cavity inside, and the top wall of the heating cavity is covered with a thermally conductive corrugated metal sheet. A heat-gathering groove is arranged on the top of the heating and curing chamber. The low-energy microwave generator includes a reflector plate, an arc groove, and a waveguide metal tube. Reflector plates are installed on both sides of the inner wall of the heating and curing chamber, and arc grooves are arranged on the inner side of the reflector plates. A waveguide metal tube is installed inside the arc grooves. The waveguide metal tube is electrically connected to the low-energy microwave generator. An electric conveyor belt is installed on the bottom wall of the inner cavity of the heating cavity. A multi-functional sensor is arranged on the upper end of the reflector plate, and a wireless data receiver is installed at the outer electrical connection end of the multi-functional sensor.

[0007] A heat-resistant plate is installed on the top of the heating curing chamber. A heat exchange and recovery mechanism is provided at the connection between the heat-resistant plate and the inner side of the heat-gathering tank. The heat exchange and recovery mechanism includes a heat exchange tube, which is located inside the heat-gathering tank. Side branch pipes are connected to both ends of the heat exchange tube. One end of multiple sets of side branch pipes on one side is connected to a main water inlet pipe, and one end of multiple sets of side branch pipes on the other side is connected to a main water outlet pipe. Heat-resistant baffles are arranged on both sides of the bottom of the heat-resistant plate, and the size of the heat-resistant baffles matches the size of the heat-gathering tank.

[0008] The heating and curing chamber is equipped with double-leaf revolving doors at both ends of its inlet and outlet.

[0009] Furthermore, a drive motor is installed at the bottom of the electric conveyor belt, and the conveying surface of the electric conveyor belt is covered with anti-slip stripes.

[0010] Furthermore, the heat-insulating baffle and the heat exchange tube are connected in a wrapping manner. The heat-insulating baffle is made of a soft heat-insulating material, and the size of the groove inside the heat-insulating baffle matches the size of the heat exchange tube.

[0011] Furthermore, the bottom of the heating curing chamber is provided with a base frame, and the upper two sides of the base frame are provided with top frames, which are arranged in a door-shaped configuration.

[0012] Furthermore, a rotary motor is installed at the top center of the top frame, and a transmission gear is installed at the shaft end of the rotary motor. A driven gear is meshed at one end of the transmission gear. A gear shaft is provided at the connection between the central shaft end of the driven gear and the outer side of the top frame. A double-leaf revolving door is fixed on the outer shaft of the transmission gear and the driven gear.

[0013] Furthermore, the rotary motor forms a transmission structure through the transmission gear, the driven gear, and the double-leaf revolving door, and the transmission gear and the driven gear mesh with each other.

[0014] Furthermore, the reflector is fitted together with the waveguide metal tube through an arc groove, and the dimensions of the arc groove and the waveguide metal tube are matched.

[0015] Furthermore, the heat-conducting corrugated metal sheet is arranged in a corrugated pattern.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: This low-energy microwave-assisted rapid curing device for precast bricks employs the cooperation of multiple mechanisms, resulting in strong functionality. The heating chamber of the curing box serves as the curing space for the precast bricks, while the low-energy microwave generator acts as the core component for generating microwave energy. Guided by an inner waveguide metal tube, the microwave energy generated by the low-energy microwave generator is transmitted to the heating chamber, radiating microwave energy into the chamber to microwave-cur the precast bricks inside. Furthermore, it integrates multiple parameter sensors such as temperature, humidity, and speed to monitor the heating status of the precast bricks in real time. Based on a preset heating curve and real-time monitoring data, it intelligently adjusts the output power of the microwave generator and the speed of the conveyor belt to achieve precise control. Through intelligent control, it reduces energy consumption during the curing process of precast bricks, enabling rapid, batch curing of precast bricks and improving production efficiency and product quality stability.

[0017] Compared to traditional curing methods, microwave heating can significantly shorten the curing time of precast bricks and improve production efficiency. Microwave heating can penetrate the interior of precast bricks to achieve uniform heating throughout, avoiding problems such as large temperature gradients and uneven heating. Moreover, no harmful substances are emitted during microwave heating, making it environmentally friendly. Furthermore, it has high heating efficiency and can quickly achieve the desired curing effect.

[0018] Symmetrically distributed reflectors are provided on both sides of the heating cavity. The reflectors are made of high reflectivity material, which effectively focuses microwave energy into the heating area and improves heating efficiency. The arc grooves on their surface can ensure that microwave energy is evenly distributed in the heating space and avoid local overheating or underheating.

[0019] The reflectors on both sides of the heating cavity ensure that microwave energy is evenly distributed within the heating space, curing the precast bricks. The generated heat is also gradually transferred upwards by the reflectors. The heat-conducting corrugated metal sheet on the top wall, with its good thermal conductivity, transfers the heat to the heat-gathering groove cavity at the top, forming a new heat space in the heat-gathering groove cavity, blocking the heat from the bottom and reducing heat loss. The heat accumulated in the heat-gathering groove is transferred to the heat exchange tubes on the inner side to collect the waste heat generated during microwave heating. The multi-branched heat exchange tubes can effectively receive heat and reduce heat loss during the curing process. By optimizing the operating parameters and heating process of the microwave heating equipment, as well as measures such as recycling waste heat, energy consumption and production costs are reduced.

[0020] Multifunctional sensors are evenly arranged on both sides of the top of the heating chamber. Each group of multifunctional sensors integrates multiple parameter sensors such as temperature, humidity, and speed. They not only monitor the temperature changes of the precast bricks in real time during the heating process to ensure uniform heating without overheating, but also intelligently adjust the output power of the microwave generator and the speed of the conveyor belt according to the preset heating curve and real-time monitoring data to achieve precise control. Furthermore, they can reduce overall energy consumption and improve the automation level of the entire production process through intermittent heating and dynamic power adjustment.

[0021] The electric conveyor belt used for transmission is made of high-temperature and wear-resistant materials, such as stainless steel mesh belt or high-temperature resistant PP material, to ensure that it will not deform or break during long-term operation. The conveyor belt is arranged along the extension direction of the heating chamber to realize the continuous movement of the precast bricks, and is equipped with a drive motor that can be frequency-controlled to adjust the speed of the electric conveyor belt according to the heating process requirements, so as to achieve control of different heating times and temperature curves. The control system monitors the speed and position of the electric conveyor belt in real time to ensure that the residence time of the precast bricks in the heating tunnel is consistent, thereby ensuring the uniformity of the heating effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external three-dimensional structure of a low-energy microwave-assisted rapid curing device for precast bricks according to the present invention.

[0023] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a low-energy microwave-assisted rapid curing device for precast bricks according to the present invention.

[0024] Figure 3 This invention relates to a low-energy microwave-assisted rapid curing device for precast bricks. Figure 2 A magnified view of the structure at point A in the middle;

[0025] Figure 4 This is a three-dimensional structural diagram of the heat exchange and recovery mechanism in a low-energy microwave-assisted rapid curing device for precast bricks according to the present invention.

[0026] Figure 5 This is a schematic diagram of the external front structure of a low-energy microwave-assisted rapid curing device for precast bricks according to the present invention.

[0027] Figure 6 This is a schematic diagram of the internal front structure of a low-energy microwave-assisted rapid curing device for precast bricks according to the present invention.

[0028] In the diagram: 1. Heating and curing chamber; 101. Heating chamber; 102. Thermally conductive corrugated metal sheet; 2. Heat-concentrating groove; 3. Multifunctional sensor; 4. Heat-insulating partition; 5. Heat-insulating plate; 6. Heat exchange and recovery mechanism; 601. Heat exchange tube; 602. Side branch pipe; 603. Water inlet main pipe; 604. Water outlet main pipe; 7. Electric conveyor belt; 8. Low-energy microwave generator; 801. Reflector; 802. Arc groove; 803. Waveguide metal tube; 9. Double-leaf revolving door; 901. Rotary motor; 902. Transmission gear; 903. Driven gear; 904. Gear shaft; 10. Base frame; 11. Top frame; 12. Wireless data receiver; 13. Drive motor; 14. Anti-slip stripes. Detailed Implementation

[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] like Figure 1-6As shown, the present invention provides a technical solution: a low-energy microwave-assisted rapid curing device for precast bricks, comprising a heating and curing chamber 1, a heat exchange and recovery mechanism 6, and a low-energy microwave generator 8. The low-energy microwave generator 8 is installed at both ends of the outer side of the heating and curing chamber 1. The low-energy microwave generator 8 employs a high-efficiency solid-state microwave power amplifier. A heating cavity 101 is formed inside the heating and curing chamber 1, and the top wall of the heating cavity 101 is covered with a heat-conducting corrugated metal sheet 102. Heat-gathering grooves 2 are arranged on the top of the heating and curing chamber 1. The low-energy microwave generator 8 includes... The inner walls of the heating curing chamber 1 are provided with reflector 801, arc groove 802 and waveguide metal tube 803. Reflector 801 is provided on both sides of the inner wall of the heating curing chamber 1, and arc groove 802 is arranged on the inner side of the reflector 801. Waveguide metal tube 803 is installed inside the arc groove 802. Waveguide metal tube 803 is electrically connected to low-energy microwave generator 8. Electric conveyor belt 7 is provided on the bottom wall of the inner cavity of heating chamber 101. Multifunctional sensor 3 is arranged on the upper end of reflector 801, and wireless data receiver 12 is provided on the outer electrical connection end of multifunctional sensor 3.

[0032] A heat-insulating plate 5 is installed on the top of the heating curing chamber 1. A heat exchange and recovery mechanism 6 is provided at the inner connection between the heat-insulating plate 5 and the heat-gathering tank 2. The heat exchange and recovery mechanism 6 includes a heat exchange tube 601, which is located inside the heat-gathering tank 2. Both ends of the heat exchange tube 601 are connected to side branch pipes 602. One end of multiple sets of side branch pipes 602 on one side is connected to a main water inlet pipe 603, and one end of multiple sets of side branch pipes 602 on the other side is connected to a main water outlet pipe 604. Heat-insulating baffles 4 are arranged on both sides of the bottom of the heat-insulating plate 5, and the size of the heat-insulating baffles 4 is matched with that of the heat-gathering tank 2.

[0033] The heating curing chamber 1 has double-leaf revolving doors 9 at both ends of its inlet and outlet; a drive motor 13 is installed at the bottom of the electric conveyor belt 7, and the conveying surface of the electric conveyor belt 7 is covered with anti-slip stripes 14; the heat-insulating partition 4 and the heat exchange tube 601 form a wrap-around connection, the heat-insulating partition 4 is made of soft heat-insulating material, and the inner groove size of the heat-insulating partition 4 matches the heat exchange tube 601; a base frame 10 is installed at the bottom of the heating curing chamber 1, and top frames 11 are provided on both sides of the upper end of the base frame 10, and the top frames 11 are arranged in a door-shaped configuration; a rotary motor 901 is installed at the top center of the top frame 11, and a transmission gear 90 is installed at the shaft end of the rotary motor 901. 2. A driven gear 903 is meshed at one end of the transmission gear 902. A gear shaft 904 is provided at the connection between the central shaft end of the driven gear 903 and the outer side of the top frame 11. A double-leaf revolving door 9 is fixed on the outer shaft of the transmission gear 902 and the driven gear 903. The rotary motor 901 forms a transmission structure through the transmission gear 902, the driven gear 903 and the double-leaf revolving door 9, and the transmission gear 902 and the driven gear 903 mesh with each other. The reflector plate 801 is fitted together through the arc groove 802 and the waveguide metal tube 803, and the dimensions of the arc groove 802 and the waveguide metal tube 803 are matched.

[0034] The entire curing device is highly collaborative and functionally integrated. The integrated heating and curing chamber 1 uses its internal heating cavity 101 as the core space for curing precast bricks, achieving efficiency improvements through low-energy microwave heating technology. The low-energy microwave generator 8 serves as the system's power source; its core components, operating efficiently, utilize the precise guidance of the inner waveguide metal tube 803 to seamlessly transmit microwave energy into the heating cavity 101, achieving omnidirectional microwave radiation and providing deep and uniform microwave curing treatment for the precast bricks.

[0035] To ensure precise control of the heating process, the system integrates an advanced multi-parameter sensor network for temperature, humidity, speed, and other parameters. These sensors are evenly distributed in the heating chamber 101 and key locations, enabling real-time data capture. The wireless data receiver 12 provides feedback on changes in various parameters during the precast brick heating process. Based on powerful data processing capabilities, the system automatically compares the preset heating curve with real-time monitoring data, intelligently adjusting the output power of the microwave generator and the speed of the electric conveyor belt 7. This achieves refined management of the heating process, thereby significantly improving product quality stability while ensuring production efficiency.

[0036] To further optimize the microwave heating effect, symmetrically distributed high-reflectivity reflective plates 801 are innovatively set on both sides of the heating cavity 101. These reflective plates are not only made of special materials that can efficiently focus microwave energy on the heating area, but their surfaces are also carefully designed with arc grooves 802 to guide the microwave energy to be evenly distributed in the heating space, effectively avoiding the problem of local overheating or insufficient heating, and ensuring the uniformity and efficiency of the overall heating of the precast bricks.

[0037] Furthermore, the system cleverly utilizes a waste heat recovery mechanism; the heat generated during the heating process is gradually transferred upwards to the heat-conducting corrugated metal sheet 102 on the top wall under the isolation effect of the reflector 801, and then guided into the cavity of the heat-gathering groove 2 at the top. This design not only reduces unnecessary heat loss, but also effectively collects the waste heat generated during microwave heating through the heat exchange tube network 601 in the heat-gathering groove 2, realizing the recycling of energy; the multi-branch design of the heat exchange tubes 601 ensures efficient heat reception and transfer, further reducing energy consumption and production costs.

[0038] The electric conveyor belt 7, a key component for precast brick transport, is made of high-temperature and wear-resistant materials (such as stainless steel mesh belts or high-temperature resistant PP material) to ensure stability and reliability during long-term operation. Combined with the variable frequency drive motor 13, the system can flexibly adjust the conveyor belt speed according to the specific requirements of the heating process, thereby achieving precise control of different heating times and temperature curves. Simultaneously, the control system monitors the conveyor belt speed and position in real time to ensure consistent residence time of the precast bricks within the heating tunnel, providing a solid guarantee for the uniformity of the heating effect.

[0039] In summary, this mechanical system achieves rapid, batch, and efficient curing of precast bricks through precise coordination and intelligent control among multiple mechanisms. It not only significantly improves production efficiency and product quality, but also reduces overall energy consumption through energy-saving measures such as waste heat recovery, demonstrating the remarkable achievements of modern mechanical design and intelligent manufacturing.

[0040] In summary, this low-energy microwave-assisted rapid curing device for precast bricks operates by first controlling the low-energy microwave generator 8 on the outside. With the precise guidance of the inner waveguide metal tube 803, microwave energy is seamlessly transmitted to the heating cavity 101, achieving omnidirectional microwave radiation for preheating. Simultaneously, the rotary motor 901 on the top frame 11 drives the transmission gear 902 to rotate, causing the driven gear 903 to rotate synchronously. This causes the double-leaf rotating door 9 on the gear shaft to rotate outwards, opening the heating cavity 101 and facilitating the start of the drive motor 13. The electric conveyor belt 7 then carries the precast bricks to be processed into the heating cavity 101. 01. During the transmission process, the main inlet pipe 603 at the top transmits the water to be heated to the side branch pipe 602 at the end of the main inlet pipe 603, allowing it to enter the heat exchange pipe 601 for slow transmission. The water continues to be transmitted from the main outlet pipe 604 at the other end of the side branch pipe 602. When the precast brick enters the heating chamber 101 of the heating and curing box 1, microwave heating will penetrate through the interior of the precast brick to achieve uniform heating and quickly achieve the required curing effect. The drive motor 13 is frequency-controlled according to the heating process requirements to adjust the speed of the electric conveyor belt 7, ensuring that the residence time of the precast brick in the heating tunnel is consistent, thereby ensuring the uniformity of the heating effect.

[0041] As the heating cavity 101 continues to heat up under microwave heating, heat gradually accumulates inside. Under the constraint of the reflectors 801 on both sides, the heat is transferred upwards. The heat is then guided by the arc surface of the heat-conducting corrugated metal sheet 102 to the heat-gathering groove 2 cavity at the top. The heat exchange tube 601 absorbs the heat in the heat-gathering groove 2 cavity to collect the residual heat generated during microwave heating and reduce heat loss during the curing process.

[0042] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A low-energy microwave-assisted rapid curing device for precast bricks, comprising a heating and curing chamber (1) and a low-energy microwave generator (8), wherein the heating and curing chamber (1) has a heating cavity (101) inside, characterized in that: The low-energy microwave generator (8) installed at both ends of the outer side of the heating curing box (1) is a high-efficiency solid-state microwave power amplifier. The inner walls of the heating curing chamber (1) are provided with high reflectivity reflective plates (801) on both sides. The inner side of the reflective plates (801) is provided with arc grooves (802), and a waveguide metal tube (803) is installed inside the arc grooves (802). The waveguide metal tube (803) is electrically connected to the low-energy microwave generator (8) for directing and uniformly introducing microwave energy into the heating cavity (101). The top wall of the heating chamber (101) is covered with a heat-conducting corrugated metal sheet (102), and the top of the heating curing box (1) is provided with heat-collecting grooves (2) that are in thermal conduction communication with the heat-conducting corrugated metal sheet (102); a heat-insulating plate (5) is also installed on the top of the heating curing box (1), and a heat exchange recovery mechanism (6) is provided at the inner connection between the heat-insulating plate (5) and the heat-collecting groove (2) for recovering the waste heat in the heat-collecting groove (2); The upper end of the reflector (801) is provided with a multi-functional sensor (3), which is used to monitor the temperature and humidity inside the heating cavity (101) in real time, and a wireless data receiver (12) is provided on the outer electrical connection end of the multi-functional sensor (3). The heating curing chamber (1) is equipped with double-leaf revolving doors (9) at both ends of the inlet and outlet, and the heating chamber (101) is equipped with an electric conveyor belt (7) on the bottom wall. The heat exchange recovery mechanism (6) includes a heat exchange tube (601) disposed inside the heat collection tank (2). Both ends of the heat exchange tube (601) are connected to side branch pipes (602). One end of one set of side branch pipes (602) on one side is connected to a main water inlet pipe (603), and one end of the other set of side branch pipes (602) on the other side is connected to a main water outlet pipe (604). The bottom sides of the heat insulation plate (5) are equipped with heat insulation baffles (4) made of soft heat insulation material that wrap the heat exchange tube (601) inside the heat collection tank (2).

2. The low-energy microwave-assisted rapid curing device for precast bricks according to claim 1, characterized in that: The bottom of the heating curing box (1) is provided with a base frame (10), and the upper sides of the base frame (10) are provided with top frames (11), which are arranged in a door-shaped configuration.

3. The low-energy microwave-assisted rapid curing device for precast bricks according to claim 2, characterized in that: A rotary motor (901) is installed at the top center of the top frame (11), and a transmission gear (902) is installed at the shaft end of the rotary motor (901). A driven gear (903) is meshed at one end of the transmission gear (902). A gear shaft (904) is provided at the connection between the central shaft end of the driven gear (903) and the outer side of the top frame (11). A double-leaf revolving door (9) is fixed on the outer shaft of the transmission gear (902) and the driven gear (903).

4. The low-energy microwave-assisted rapid curing device for precast bricks according to claim 3, characterized in that: The rotary motor (901) forms a transmission structure through the transmission gear (902), the driven gear (903) and the double-leaf revolving door (9), and the transmission gear (902) and the driven gear (903) mesh with each other.

5. The low-energy microwave-assisted rapid curing device for precast bricks according to claim 4, characterized in that: The electric conveyor belt (7) is driven by a variable frequency speed control drive motor (13), and its conveyor surface is covered with anti-slip stripes (14).

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