A microwave concrete breaking device without opening and closing and a breaking method

Abstract

The application discloses a kind of free opening and closing microwave concrete crushing equipment and crushing method, belong to microwave crushing solid waste recycling technical field.Equipment includes main body, transmission heating device, microwave reflection curtain, microwave absorption curtain, microwave shielding curtain and heat preservation device;Microwave shielding curtain is set in the cavity of main body both ends;Microwave absorption curtain and microwave reflection curtain are sequentially symmetrically set along the two ends of main body to central axis;Transmission heating device is set in the bottom of main body;Transmission heating device includes nested material conveying belt and microwave heating device;Heat preservation device is set in the outside of main body corresponding to microwave crushing area, microwave reflection area and microwave absorption area;Heat preservation device includes built-in flow guide pipe and external flow guide pipe which are interconnected to form a loop;Built-in flow guide pipe is set inside microwave absorption curtain, and external flow guide pipe is set on the outer surface of main body.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of microwave crushing of solid waste recycling, and particularly relates to a microwave-free opening and closing type concrete crushing device and a crushing method. BACKGROUND

[0002] As a new type of energy-saving and environmentally friendly crushing method, the microwave crushing aggregate extraction technology can realize efficient separation of concrete aggregates while maintaining good mechanical properties of the aggregates. During the microwave treatment of concrete, traditional microwave heating crushing devices have a closed heating form and an open heating form, but both forms have certain defects.

[0003] The traditional microwave heating crushing device sets up a closed containing space to reduce the harm of microwave radiation to personnel near the device. In order to form a closed environment, only a window for material loading and unloading is reserved in the device, and the material loading and unloading is realized by opening and closing the shielding door at the window, which greatly prolongs the material loading and unloading time during the microwave crushing process, reduces the connection degree of the cycle of loading, crushing and unloading, and increases the manual operation of the single window material loading and unloading setting, which is difficult to realize the continuous crushing production, reduces the overall efficiency of the microwave crushing aggregate extraction, and cannot meet the needs of industrialized large-scale crushing extraction. Although the closed heating chamber can effectively reduce the harm of residual microwave to personnel near the device, it greatly reduces the material loading and unloading efficiency and prolongs the overall time of concrete crushing.

[0004] The open microwave heating device can improve the loading and unloading efficiency, but the open heating chamber will inevitably leak residual microwave to the surrounding environment, which will harm the nearby operators. In addition, the open heating device cannot provide a constant heating chamber temperature, which leads to rapid heat loss in the heated concrete and reduces the concrete crushing effect. In addition, a large amount of dust is generated during the concrete crushing process, and the open heating device will cause environmental pollution to a certain extent. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the present application is to provide a microwave-free opening and closing type concrete crushing device and a crushing method. The microwave crushing zone, microwave reflection zone, microwave absorption zone and microwave shielding zone composed of the transmission heating device, microwave reflection curtain, microwave absorption curtain and microwave shielding curtain avoid residual microwave leakage, and the heat preservation device provides a constant heating chamber temperature, which solves the problems of low material loading and unloading efficiency and long crushing time of the closed heating chamber, and the leakage of residual microwave to the surrounding environment and the inability to provide a constant heating chamber temperature of the open device.

[0006] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0007] The application provides a microwave-free opening and closing type concrete crushing device, which comprises a main body, a transmission heating device, a microwave reflection curtain, a microwave absorption curtain, a microwave shielding curtain and a heat preservation device; the microwave shielding curtain is arranged at both ends of a cavity of the main body; the microwave absorption curtain and the microwave reflection curtain are symmetrically arranged along both ends of the main body to the central axis in sequence;

[0008] The microwave reflection curtain, the microwave absorption curtain and the microwave shielding curtain divide the cavity of the main body into a microwave crushing zone, a microwave reflection zone, a microwave absorption zone and a microwave shielding zone along the central axis to both ends of the cavity;

[0009] The transmission heating device is arranged at the bottom of the main body; the transmission heating device comprises a material conveying belt and a microwave heating device which are arranged in a nested mode;

[0010] The heat preservation device is arranged outside the main body corresponding to the microwave crushing zone, the microwave reflection zone and the microwave absorption zone; the heat preservation device comprises an internal flow guide pipe and an external flow guide pipe which are connected to form a loop;

[0011] The internal flow guide pipe is arranged inside the microwave absorption curtain, and the external flow guide pipe is arranged on the outer surface of the main body.

[0012] In the specific implementation process, the microwave reflection curtain comprises a plurality of microwave reflection curtain main bodies, metal sheets and permanent magnets;

[0013] The permanent magnets are arranged at the left and right ends of the microwave reflection curtain main body, and the metal sheets are arranged on the side of the microwave reflection curtain main body which faces the cavity of the main body; the permanent magnets are used for adsorbing and connecting the plurality of microwave reflection curtain main bodies into a whole; the metal sheets on the plurality of microwave reflection curtain main bodies are connected to form a microwave reflection surface.

[0014] In the specific implementation process, the microwave absorption curtain comprises a microwave absorption curtain main body and an internal flow guide pipe arranged inside the microwave absorption curtain main body, and a flow guide pipe opening is arranged on the microwave absorption curtain main body.

[0015] In the specific implementation process, flow guide pipe holes are arranged at both ends of the microwave absorption zone of the cavity of the top of the main body, and the flow guide pipe holes are arranged corresponding to the flow guide pipe openings;

[0016] The internal flow guide pipe is connected to the external flow guide pipe through the flow guide pipe holes to form a loop; and the loop is filled with a liquid microwave absorption substance.

[0017] In the specific implementation process, a metal gauze is arranged on the surface of the internal flow guide pipe, and a wave-penetrating metal protective net is arranged outside the external flow guide pipe.

[0018] In the specific implementation process, the microwave shielding curtain comprises a microwave shielding curtain body and a built-in metal shielding net arranged in the interior of the microwave shielding curtain body.

[0019] In the specific implementation process, the microwave heating device comprises a microwave source, a magnetron, a waveguide and a microwave absorber, the microwave source, the magnetron and the microwave absorber are all installed on the waveguide, the waveguide has a waveguide outlet end, and the waveguide outlet ends are uniformly arranged at a set interval.

[0020] In the specific implementation process, the inlet end and the outlet end of the cavity of the main body are provided with microwave detectors; the top of the outlet end of the cavity of the main body is provided with a cooling device, and the cooling device is connected with an external water source.

[0021] In the specific implementation process, the exterior of the main body is provided with an integrated metal dust cover, the bottom of the integrated metal dust cover is provided with a drain opening; and the interior of the integrated metal dust cover is filled with a heat insulation substance.

[0022] The upper portion of the microwave crushing zone of the main body is provided with an exhaust device for exhausting water vapor generated during microwave heating.

[0023] The application also provides a microwave-free opening and closing type concrete crushing method based on the microwave-free opening and closing type concrete crushing device.

[0024] S1: the transmission heating device is turned on, and the waste concrete to be crushed is poured on the transmission heating device at a set speed;

[0025] S2: the transmission heating device rotates to carry the waste concrete to be crushed to move towards the cavity of the main body, and the waste concrete to be crushed passes through the microwave shielding zone, the microwave absorbing zone and the microwave reflecting zone, and the corresponding microwave shielding curtain, microwave absorbing curtain and microwave reflecting curtain in each zone closely sweep the moving waste concrete to be crushed;

[0026] S3: the waste concrete to be crushed is uniformly irradiated by the microwave in the microwave crushing zone to be crushed; the water vapor overflowing in the waste concrete and the solid dust generated after the waste concrete is broken are discharged; and the crushed and separated concrete and its coarse aggregate are obtained.

[0027] S4: the crushed and separated concrete and its coarse aggregate pass through the microwave reflecting zone, the microwave absorbing zone and the microwave shielding zone, and the corresponding microwave reflecting curtain, microwave absorbing curtain and microwave shielding curtain in each zone closely sweep the moving crushed and separated concrete and its coarse aggregate; and the crushed and separated concrete and its coarse aggregate are cooled to obtain the crushed coarse aggregate.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The application provides a microwave concrete crushing equipment without opening and closing, which realizes effective shielding of microwaves in the industrialized and streamlined crushing production of waste concrete by opening both ends of the microwave concrete crushing equipment and arranging microwave shielding curtains at the entrances and exits of the equipment; the residual microwave energy can be utilized by the dense arrangement of the microwave absorbing curtains and the flow guide pipes, so that the constant temperature of the heating chamber of the microwave concrete crushing equipment is maintained; the manual operation for storing and taking materials can be reduced by the transmission heating device composed of the material conveying belt and the microwave heating device, and the overall crushing efficiency of the microwave crushing concrete is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Fig. (a) and Fig. (b) are structural schematic diagrams of the microwave concrete crushing equipment of the application;

[0031] Figure 2 Fig. is a schematic diagram of the division of the top region of the main body of the microwave concrete crushing equipment of the application and the opening position thereof;

[0032] Figure 3 Fig. is a schematic diagram of the division of the top surface region of the main body of the microwave concrete crushing equipment of the application;

[0033] Figure 4 Fig. is a schematic diagram of the arrangement of the external flow guide pipe of the main body of the microwave concrete crushing equipment of the application;

[0034] Figure 5 Fig. is a schematic diagram of the structure of the microwave reflecting curtain of the application;

[0035] Figure 6 Fig. is a schematic diagram of the structure of the microwave absorbing curtain of the application;

[0036] Figure 7 Fig. is a schematic diagram of the structure of the microwave shielding curtain of the application;

[0037] Figure 8 Fig. is a schematic diagram of the material conveying belt and the embedded microwave heating device of the application;

[0038] Figure 9 Fig. is a schematic diagram of the structure of the built-in flow guide pipe of the microwave absorbing curtain of the application;

[0039] Figure 10 Fig. is a waste concrete crushing flowchart of an embodiment of the application.

[0040] Wherein: 1 - main body; 1a - flow guide pipe hole; 21 - microwave reflection curtain; 21a - microwave reflection curtain main body; 21b - metal sheet; 21c - permanent magnet; 22 - microwave absorption curtain; 22a - microwave absorption curtain main body; 22b - built-in flow guide pipe; 23 - microwave shielding curtain; 23a - microwave shielding curtain main body; 23b - built-in metal shielding net; 3 - external flow guide pipe; 3a - external flow guide pipe main body; 3b - wave-penetrating metal protective net; 4 - fluid one-way control valve; 5 - water pressure gauge; 6 - water flow sprayer; 7 - material conveying belt; 7a - material conveying belt transmission wheel; 7b - heavy object supporting wheel; 7c - small supporting wheel; 8 - microwave heating device; 8a - wave guide pipe; 8b - wave guide pipe outlet end; 9 - microwave detector; 10 - exhaust equipment; 11 - integrated metal dustproof cover; 11a - drain; 12 - microwave shielding area; 13 - microwave absorption area; 14 - microwave reflection area; 15 - microwave crushing area; 16 - cooling area. DETAILED DESCRIPTION

[0041] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0042] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0043] The present application will be further described in detail below in combination with the drawings:

[0044] As Figures 1 to 9As shown, the present application provides a kind of free opening and closing microwave concrete crushing equipment and crushing method, the free opening and closing microwave concrete crushing equipment includes the main body 1 of two ends open horizontal cuboid equipment, the magnetic microwave reflection curtain 21 with single side smooth metal sheet 21b, microwave absorption curtain 22 containing built-in flow guide pipe 22b, microwave shielding curtain 23 containing built-in metal shielding net 23b, external flow guide pipe 3, fluid one-way control valve 4, water pressure gauge 5, cooling device, i.e.water flow atomizer 6, material conveying belt 7 and the transmission heating device of microwave heating device 8, microwave detector 9, exhaust equipment 10, integral type metal dust cover 11 with drain 11a, heat preservation device, control system and power supply.

[0045] Figure 3 It is the division schematic view of the top end area of cuboid equipment main body in the embodiment of the present application, which shows the division position of microwave shielding area, microwave absorption area, microwave reflection area, microwave crushing area and cooling area, wherein: microwave shielding area 12, microwave shielding curtain 23 is installed in the area, and microwave is shielded; microwave absorption area 13, microwave absorption curtain 22 is installed in the area, and microwave is absorbed; microwave reflection area 14, microwave reflection curtain 21 is installed in the area, and microwave in heating cavity is reflected; microwave crushing area 15, microwave heating device 8 is arranged in the material conveying belt 7 at the bottom of the area, to realize microwave heating and crushing treatment of concrete; cooling area 16, water flow atomizer 6 is installed in the area, to cool the crushed concrete after heating, and to absorb residual microwave to some extent.

[0046] Wherein, material conveying belt 7 and microwave heating device 8 constitute transmission heating device; the transmission heating device is arranged at the bottom of main body 1; microwave shielding curtain 23 is arranged at both ends of the cavity of main body 1; microwave absorption curtain 22 and microwave reflection curtain 21 are symmetrically arranged along both ends of main body 1 to the central axis in turn; microwave reflection curtain 21, microwave absorption curtain 22 and microwave shielding curtain 23 divide the cavity inside main body 1 into microwave crushing area 15, microwave reflection area 14, microwave absorption area 13 and microwave shielding area 12 along the central axis to both end areas; the upper part of microwave crushing area 15 of main body 1 is provided with exhaust equipment, and the exhaust equipment is used to discharge water vapor generated during microwave heating.

[0047] The main body 1 of the cuboid device is made of metal with a certain thickness, the internal metal surface of the main body 1 is smooth, the two ends of the main body 1 are open, the opening at the material entering position is called the inlet, and the opening at the other side is called the outlet. The inlet of the main body 1 can be sequentially divided into a microwave shielding area 12, a microwave absorbing area 13 and a microwave reflecting area 14 in the direction of the chamber interior. The chamber of the main body 1 can be sequentially divided into the microwave reflecting area 14, the microwave absorbing area 13, the microwave shielding area 12 and a cooling area 16 in the direction of the outlet. The main body 1 of the cuboid device with the two ends open horizontally, which shields microwave radiation, provides a crushing space and carries other components.

[0048] Figure 5 The figure is a schematic diagram of the microwave reflecting curtain structure of the application, which specifically shows the position relationship between the smooth metal sheet 21b, the permanent magnet 21c and the microwave reflecting curtain main body 21a. The microwave reflecting curtain main body 21a mainly provides a carrier for the metal reflecting sheet; the metal sheet 21b mainly connects with the adjacent metal sheet 21b to form a complete microwave reflecting surface, reflects and shields microwaves; and the permanent magnet 21c mainly adsorbs the adjacent microwave reflecting curtain main body 21a to make the smooth metal sheets form a whole.

[0049] The microwave reflecting curtain 21 made of high-temperature-resistant and high-elasticity material includes a plurality of microwave reflecting curtain main bodies 21a, metal sheets 21b and permanent magnets 21c. The length of the microwave reflecting curtain main body 21a should be slightly greater than the height of the horizontal main body 1. The microwave reflecting curtain main body 21a is provided with a smooth metal sheet 21b on one side. The microwave reflecting curtain 21 is installed at the position of the microwave reflecting area 14 of the main body of the cuboid device, and the surface of the smooth metal sheet 21b on one side is close to the interior of the chamber. The permanent magnets 21c are installed at the left and right ends of the microwave reflecting curtain main body 21a, which can adsorb the adjacent reflecting curtains. The microwave reflecting curtain main bodies 21a after being adsorbed form a whole, the smooth metal sheets 21b inside the whole are connected to form a microwave reflecting surface. The microwave reflecting surface is adsorbed by the permanent magnets 21c during the material transportation process, the reflecting curtain is bent, and the material can pass through smoothly.

[0050] Figure 6 The figure is a schematic diagram of the microwave absorbing curtain structure of the application, which specifically shows the arrangement of the microwave absorbing curtain main body 22a and the built-in flow guide pipe 22b. The microwave absorbing curtain main body 22a mainly protects the internal flow guide pipe from being damaged by friction during the material transportation process. The built-in flow guide pipe 22b mainly stores microwave absorbing substances, forms a closed loop with the external flow guide pipe 3, absorbs the residual microwaves passing through the microwave reflecting curtain 21, provides a heat source for the heat release of the external flow guide pipe 3 and the constant temperature of the outer wall of the microwave crushing area 15 of the main body of the device. Figure 8The guide tube body 3a is mainly used for storing liquid microwave absorbing material. The wave-transparent metal protection net 3b is mainly used for protecting the guide tube body and preventing the guide tube body from being damaged by friction during material transmission.

[0051] The heat preservation device comprises the built-in guide tube 22b and the external guide tube 3 which are connected to form a loop. The built-in guide tube 22b is arranged inside the microwave absorbing curtain 22, and the external guide tube 3 is arranged on the outer surface of the main body 1. The heat preservation device is arranged on the outer surface of the main body 1 corresponding to the microwave breaking area 15, the microwave reflecting area 14 and the microwave absorbing area 13.

[0052] The main body of the microwave absorbing curtain 22 is made of a high-temperature-resistant and high-elasticity material. The height of the microwave absorbing curtain main body 22a should be slightly greater than the height of the main body 1 of the transversely arranged rectangular equipment. The microwave absorbing curtain 22 contains the built-in guide tube 22b covered by a metal mesh. The material of the built-in guide tube 22b should be microwave-transparent, i.e. it does not shield or absorb microwaves, but microwaves can penetrate the built-in guide tube 22b. The mesh of the metal mesh covering the built-in guide tube 22b is uniformly distributed, and the aperture is greater than the aperture used for microwave shielding, so that the liquid in the built-in guide tube 22b can absorb microwaves. During the transmission of broken concrete, the concrete and the microwave absorbing curtain 22 rub against each other. The metal mesh covering the built-in guide tube 22b in the microwave absorbing curtain 22 can protect the built-in guide tube 22b in the microwave absorbing curtain 22 from being damaged by friction. The built-in guide tubes 22b in the microwave absorbing curtain 22 are arranged in the same plane and densely. The guide tube openings penetrate the guide tube holes la of the main body 1 of the rectangular equipment and are connected to the external guide tube 3. The microwave absorbing curtain 22 is installed in the microwave absorbing area 13 of the main body of the rectangular equipment. The microwave absorbing curtain 22 bends during the transmission of materials, and the curtain body sweeps the materials, so that the materials can be smoothly transmitted.

[0053] Figure 4 It is a schematic diagram of the external guide tube arrangement of the microwave concrete breaking equipment of the present application. The diagram shows the arrangement cycle of the external guide tube, as well as the installation positions of the fluid one-way control valve 4 and the water pressure gauge 5. It mainly comprises the main body 1, the external guide tube 3, the fluid one-way control valve 4, the water pressure gauge 5, the water flow sprayer 6, the material conveying belt 7, the microwave heating device 8, the microwave detector 9, the exhaust equipment 10 and the guide tube hole la.

[0054] The external guide tube 3 is mainly used for storing the liquid in the microwave absorbing curtain 22 which has been heated by microwaves and circulating heat dissipation, so as to keep the temperature of the main body 1 constant in the microwave breaking area 15. The fluid one-way control valve 4 is mainly used for promoting the circulation of the liquid in the closed guide tube loop. The water pressure gauge 5 is mainly used for measuring the liquid pressure in the closed guide tube loop, so as to quickly find the position of the leaked guide tube loop.

[0055] The main body 1 is provided with a guide pipe hole 1a near the inlet and outlet, the position of the guide pipe hole 1a is determined by the position of the built-in guide pipe 22b in the microwave absorption curtain 22, the microwave absorption curtain main body 22a is provided with a guide pipe opening, and the guide pipe hole 1a is correspondingly arranged with the guide pipe opening; the surface of the main body 1 is provided with an external guide pipe 3, the built-in guide pipe 22b passes through the guide pipe hole 1a and is connected with the external guide pipe 3 to form a loop, and the loop is filled with a liquid microwave absorption substance.

[0056] The guide pipe hole 1a mainly functions to facilitate the built-in guide pipe 22b in the microwave absorption curtain 22 to extend to the outside of the main body 1 and form a closed loop with the external guide pipe 3.

[0057] The external guide pipe 3 has excellent heat conductivity, is closely attached to the external surface of the cuboid equipment main body, is densely arranged in a certain manner and uniformly covers the external surface of the main body 1 of the cuboid equipment, is connected with the built-in guide pipe 22b in the microwave absorption curtain 22 to form a closed loop, the closed loop is filled with a liquid microwave absorption substance (water), and the external guide pipe 3 is connected with a fluid one-way control valve 4 and a water pressure gauge 5. The fluid one-way control valve 4 is installed in each closed guide pipe loop to ensure the smooth circulation of the liquid in the guide pipe loop. The water pressure gauge 5 is installed in each closed guide pipe loop to ensure that the leaked loop position can be timely confirmed when the liquid microwave absorption substance in the guide pipe loop leaks.

[0058] Figure 7 is a structure schematic diagram of the microwave shielding curtain of the present application, which specifically shows the positional relationship between the microwave shielding curtain main body 23a and the built-in metal shielding net 23b, wherein: the microwave shielding curtain main body 23a mainly functions to provide support and protection for the built-in metal shielding net 23b and prevent the built-in metal shielding net 23b from being damaged by friction during the material conveying process; the built-in metal shielding net 23b is composed of a mesh metal with uniform arrangement of certain apertures and can shield residual microwaves after penetrating the microwave reflection curtain 21 and the microwave absorption curtain 22.

[0059] The microwave shielding curtain 23 containing the built-in metal shielding net 23b mainly comprises a microwave shielding curtain body 23a and a built-in metal shielding net 23b, which shields the microwave radiation while ensuring the smooth transportation of the materials; the microwave shielding curtain body is made of a high-temperature-resistant and high-elasticity material, and the length of the microwave shielding curtain body 23a should be slightly greater than the height of the main body 1 of the horizontally-placed cuboid device; the built-in metal shielding net 23b is arranged inside the microwave shielding curtain body 23a and can shield the microwave; the metal net holes are uniformly distributed, and the aperture size is calculated according to the wavelength of the microwave to effectively shield the residual microwave; the microwave shielding curtain 23 is installed in the microwave shielding area 12 of the main body of the cuboid device, and the microwave shielding curtain 23 bends when the materials are conveyed, the curtain body sweeps across the materials, and the materials are smoothly transported.

[0060] The water flow sprayer 6 is connected with an external water source and is arranged in the cooling area on the upper side of the outlet of the main body 1 of the cuboid device; the water flow sprayer 6 can spray water mist to cool the broken concrete and the recycled coarse aggregate after the microwave crushing and to form water mist to fill in the cooling area to absorb the residual microwave after the microwave shielding at the outlet of the concrete crushing device, thereby ensuring the shielding effect of the microwave.

[0061] Figure 8 It is a schematic view of the material conveying belt and the embedded microwave heating device, which specifically shows the nesting relationship between the microwave heating device 8 and the material conveying belt 7, mainly comprising: a material conveying belt driving wheel 7a, which mainly provides power for the circulating movement of the track in the material conveying belt; a heavy object supporting wheel 7b, which mainly shortens the distance between the pulley groups supporting the track in the material conveying belt, supports the heavier materials such as waste concrete, and prevents the surface of the track from being dented when transporting heavier materials; a small supporting wheel 7c, which mainly supports the materials and keeps the surface of the track in the microwave crushing area flat to prevent the track from being dented and hitting the outlet end of the waveguide tube to cause damage; a waveguide tube 8a, which mainly conducts the generated microwave; and a waveguide tube outlet end 8b, which mainly conducts and releases the microwave used for heating and crushing the concrete.

[0062] The material conveying belt 7 mainly comprises a microwave-transparent material track, a material conveying belt driving wheel 7a, a heavy object supporting wheel 7b, and a small supporting wheel 7c, which functions to transport materials and provide space for the microwave heating device 8; the track in the material conveying belt is made of a microwave-transparent material, the material conveying belt is internally provided with the heavy object supporting wheel 7b, and the microwave heating device 8 is internally arranged at the middle position of the material conveying belt; the small supporting wheel 7c is arranged at the interval around the waveguide tube outlet end 8b of the microwave heating device 8; the material conveying belt 7 is installed at the bottom of the main body 1, the track on the material conveying belt passes through the inside of the cuboid device, and the length of the material conveying belt 7 should be greater than the length of the main body 1.

[0063] The microwave heating device 8 is arranged on the lower side of the upper track at the heating chamber position of the main body 1 in the material conveying belt 7, and comprises a microwave source, a magnetron, a waveguide 8a, and a microwave absorber for providing the microwave energy required for crushing; the microwave source, the magnetron, and the microwave absorber are all mounted on the waveguide 8a, and the waveguide 8a has a waveguide outlet end 8b which is uniformly arranged according to a certain calculation.

[0064] The microwave detector 9 is arranged at the inlet and outlet of the main body 1 to detect the amount of microwave radiation at the openings at both ends of the main body 1, and to alarm when the microwave radiation is higher than a safe value.

[0065] The main function of the microwave detector 9 is to detect the microwave shielding effect at the inlet and outlet of the crushing equipment, and to alarm when the residual microwave radiation value exceeds the safety limit.

[0066] The exhaust device is arranged on the upper part of the heating chamber of the main body 1, which can exhaust the water vapor generated during microwave heating.

[0067] The integrated metal dust cover 11 with a drainage port 11a should be arranged outside the main body 1 and the external flow guide pipe 3 covering it, to protect the main body 1 and the external flow guide pipe 3, and the drainage port 11a should be arranged at the lower end of the integrated metal dust cover 11 to ensure that the liquid can be discharged in time when the liquid leaks in the sealed flow guide pipe, protecting the internal circuit from damage.

[0068] Further, the inside of the integrated metal dust cover 11 with a drainage port 11a should be filled with a heat insulation layer made of aluminum silicate fiber cotton, which is to insulate the microwave concrete crushing equipment and inhibit heat conduction inside and outside the equipment. The main function of the drainage port 11a is to discharge the liquid in time when the liquid leaks in the sealed flow guide pipe, protecting the internal circuit from damage.

[0069] The main function of the integrated metal dust cover 11 is to protect the main body 1 and the external flow guide pipe 3 covering its surface, to insulate the crushing equipment and inhibit heat conduction inside and outside the equipment.

[0070] The control system should include the respective control of the microwave heating device 8, the fluid one-way control valve 4, the material conveying belt 7, the water flow sprayer 6, the exhaust device 10, and the microwave detector 9.

[0071] The power supply should provide rated power for the control system, the microwave heating device 8, the fluid one-way control valve 4, the material conveying belt 7, the water flow sprayer 6, the exhaust device 10, and the microwave detector 9.

[0072] Further, the conveying speed of the material conveying belt 7 is determined by the actual effect of the specific microwave crushing concrete.

[0073] The water flow sprayer 6 mainly comprises a spray pipe and a conical spray head, which functions to cool the broken concrete and coarse aggregate after microwave heating, and the generated water mist diffuses in the space of the cooling area to absorb the residual microwaves at the outlet; the exhaust equipment 10 mainly functions to discharge the water vapor and suspended dust generated in the heating process.

[0074] The application also provides a non-opening microwave concrete breaking method, and the specific steps are as follows:

[0075] S1: turning on the transmission heating device, and pouring the waste concrete to be broken on the transmission heating device at a set speed;

[0076] S2: the transmission heating device rotates to carry the waste concrete to be broken to the cavity of the main body 1, and the waste concrete to be broken passes through the microwave shielding area 12, the microwave absorbing area 13 and the microwave reflecting area 14, and the microwave shielding curtain 23, the microwave absorbing curtain 22 and the microwave reflecting curtain 21 corresponding to each area closely sweep the moving waste concrete to be broken;

[0077] S3: entering the microwave breaking area 15 to be broken under uniform microwave irradiation; the exhaust equipment 10 discharges the water vapor overflowing in the waste concrete and the solid dust generated after the waste concrete is broken; and the broken and separated concrete and coarse aggregate are obtained;

[0078] S4: the broken and separated concrete and coarse aggregate pass through the microwave reflecting area 14, the microwave absorbing area 13 and the microwave shielding area 12, and the microwave reflecting curtain 21, the microwave absorbing curtain 22 and the microwave shielding curtain 23 corresponding to each area closely sweep the moving broken and separated concrete and coarse aggregate; and the broken and separated concrete and coarse aggregate are cooled to obtain the broken coarse aggregate.

[0079] Embodiment

[0080] A non-opening microwave concrete breaking device comprises a horizontally placed cuboid main body 1 with two open ends, a magnetic microwave reflecting curtain 21 installed in the microwave reflecting area 14 of the main body 1, a microwave absorbing curtain 22 installed in the microwave absorbing area 13 of the main body 1, a microwave shielding curtain 23 installed in the microwave shielding area 12 of the main body 1, an exhaust equipment 10 installed at the top end of the microwave breaking area 15 of the main body 1, densely arranged external guide pipes 3 arranged outside the microwave breaking area 15 of the main body 1, microwave detectors 9 arranged at the inlet and outlet ends of the main body 1, a cooling device, i.e., a water flow sprayer 6, arranged inside the top end of the cooling area of the main body 1, a transmission heating device composed of a material conveying belt 7 and a microwave heating device 8 installed at the bottom of the main body 1, and an integrated metal dustproof cover 11 with a drainage port 11a installed at the outermost layer of the main body 1.

[0081] The outer surface of the microwave reflection curtain main body 21a of the magnetic microwave reflection curtain 21 is provided with a smooth metal sheet 21b near the side of the microwave crushing area 15, and the left and right ends of the microwave reflection curtain main body 21a are provided with permanent magnets 21c.

[0082] The microwave absorption curtain main body 22a is provided with densely arranged built-in flow guide pipes 22b; the microwave absorption curtain main body 22a is provided with a flow guide pipe opening; the top of the main body 1 is provided with flow guide pipe holes 1a corresponding to the two ends of the microwave absorption area 13 of the cavity, and the flow guide pipe holes 1a are correspondingly arranged with the flow guide pipe openings; the surface of the main body 1 is provided with an external flow guide pipe 3, the built-in flow guide pipe 22b passes through the flow guide pipe hole 1a and is connected with the external flow guide pipe 3 to form a loop; the loop is filled with a liquid microwave absorbing substance; the surface of the built-in flow guide pipe 22b is provided with a metal gauze; the external flow guide pipe 3 is wrapped with a wave-transparent metal protective net 3b. The built-in flow guide pipe 22b in the microwave absorption curtain 22 should be made of microwave-transparent material, i.e. material that can penetrate and not absorb microwaves, and the metal protective net covering the surface of the built-in flow guide pipe 22b does not have a shielding effect on microwaves.

[0083] The microwave shielding curtain 23 is provided with a built-in metal shielding net 23b in the inside of the microwave shielding curtain main body 23a; the mesh holes of the built-in metal shielding net 23b in the microwave shielding curtain 23 should be uniformly distributed, and the aperture size is calculated according to the wavelength of microwaves, so that the built-in metal shielding net 23b has a good shielding effect on microwave radiation.

[0084] The length of the above-mentioned magnetic microwave reflection curtain 21, microwave absorption curtain 22 and microwave shielding curtain 23 should be slightly larger than the height of the main body 1, the microwave reflection curtain 21 and the microwave absorption curtain 22 are arranged in a single layer, and the microwave shielding curtain 23 is arranged in a multi-layer dense arrangement.

[0085] The material conveying belt 7 at the bottom of the main body 1 is in a nested relationship with the microwave heating device 8, and the microwave heating device 8 is installed at the lower side of the upper track inside the material conveying belt 7; the material conveying belt 7 is provided with a transmission wheel 7a, a weight supporting wheel 7b and a small supporting wheel 7c; the microwave heating device 8 comprises a microwave source, a magnetron, a waveguide 8a and a microwave absorber, the microwave source and the magnetron are installed on the waveguide 8a, and the waveguide outlet end 8b is uniformly arranged according to a certain calculation.

[0086] The main body 1 and the material conveying belt 7 of the rectangular equipment should have sufficient size to provide heating space for large-scale crushing production, and the equipment bearing main body should have good microwave shielding capability; the track of the material conveying belt 7 should be made of microwave-transparent material.

[0087] Figure 10 It is a waste concrete crushing flowchart of the embodiment of the application, which comprises the following steps:

[0088] Step one, the operator connects the power supply;

[0089] Step two, using the control system, open the microwave heating device 8, fluid one-way control valve 4, material conveyor belt 7, microwave detector 9;

[0090] Step three, pour the waste concrete to be broken at a certain speed on the material conveyor belt 7;

[0091] Step four, the transmission wheel 7a in the material conveyor belt rotates, driving the track and the waste concrete on it to move from the inlet to the outlet of the crushing device;

[0092] Step five, the waste concrete passes through the microwave shielding area 12, the microwave absorption area 13 and the microwave reflection area 14 in turn, and the curtain body of the corresponding microwave shielding curtain 23, microwave absorption curtain 22 and microwave reflection curtain 21 in each area closely sweeps the moving waste concrete;

[0093] Step six, the waste concrete is uniformly irradiated by microwaves in the microwave crushing area 15;

[0094] Step seven, open the exhaust equipment 10 to remove the water vapor overflowing inside the waste concrete during the heating process and the solid dust generated after the waste concrete is broken;

[0095] Step eight, the crushed and separated concrete and its coarse aggregate pass through the microwave reflection area 14, the microwave absorption area 13 and the microwave shielding area 12 in turn, and the curtain body of the corresponding microwave reflection curtain 21, microwave absorption curtain 22 and microwave shielding curtain 23 in each area closely sweeps the moving waste concrete;

[0096] Step nine, open the water spray 6 to cool the crushed and separated concrete and its coarse aggregate; collect the coarse aggregate obtained by crushing.

[0097] Through the above steps, the industrialization and flow production of microwave concrete crushing aggregate extraction is realized, this method improves the degree of reuse of residual microwaves on the basis of realizing effective shielding of microwaves, maintains the constant temperature of the heating and crushing chamber of the equipment, reduces the manual operation of material storage and retrieval, greatly improves the overall crushing efficiency of microwave crushing concrete. There are many forms of large-scale crushing production of microwave concrete crushing equipment during the heating process, and an optional implementation mode is provided in this embodiment.

[0098] The above content only illustrates the technical idea of the present application and cannot limit the protection scope of the present application. Any modification made according to the technical idea of the present application on the basis of the technical solution falls within the protection scope of the claims of the present application.

Claims

1. A microwave concrete breaking apparatus without opening and closing, characterized in that, The microwave absorption curtain (22) and the microwave reflection curtain (21) are symmetrically arranged along the two ends of the main body (1) to the central axis in sequence. The microwave reflection curtain (21), the microwave absorption curtain (22) and the microwave shielding curtain (23) divide the cavity of the main body (1) into a microwave crushing zone (15), a microwave reflection zone (14), a microwave absorption zone (13) and a microwave shielding zone (12) along the central axis to the two end regions. The transmission heating device is arranged at the bottom of the main body (1), and the transmission heating device comprises a material conveying belt (7) and a microwave heating device (8) arranged in a nested mode. The heat preservation device is arranged outside the main body (1) corresponding to the microwave crushing zone (15), the microwave reflection zone (14) and the microwave absorption zone (13), and the heat preservation device comprises an internal flow guide pipe (22b) and an external flow guide pipe (3) which are connected in a loop. The internal flow guide pipe (22b) is arranged inside the microwave absorption curtain (22), and the external flow guide pipe (3) is arranged on the outer surface of the main body (1).

2. The lift-up microwave concrete breaking apparatus according to claim 1, wherein The microwave reflection curtain (21) comprises a plurality of microwave reflection curtain bodies (21a), metal sheets (21b) and permanent magnets (21c). The permanent magnets (21c) are arranged at the left and right ends of the microwave reflection curtain body (21a), and the metal sheets (21b) are arranged on the side of the microwave reflection curtain body (21a) facing the cavity of the main body (1); the permanent magnets (21c) adsorb and connect the plurality of microwave reflection curtain bodies (21a) as a whole; the metal sheets (21b) on the plurality of microwave reflection curtain bodies (21a) are connected to form a microwave reflection surface.

3. The lift-up microwave concrete breaking apparatus according to claim 1, wherein The microwave absorption curtain (22) comprises a microwave absorption curtain body (22a) and an internal flow guide pipe (22b) arranged inside the microwave absorption curtain body (22a), and the microwave absorption curtain body (22a) is provided with a flow guide pipe opening.

4. The lift-up microwave concrete breaking apparatus according to claim 3, wherein The top of the main body (1) is provided with flow guide pipe holes (1a) corresponding to the two ends of the microwave absorption zone (13) of the cavity, and the flow guide pipe holes (1a) are arranged corresponding to the flow guide pipe openings; The internal flow guide pipe (22b) is connected with the external flow guide pipe (3) through the flow guide pipe holes (1a) to form a loop, and the loop is filled with a liquid microwave absorbing substance.

5. The clamshell-free microwave concrete breaking apparatus of claim 1, wherein, The surface of the internal flow guide pipe (22b) is provided with a metal gauze, and the outside of the external flow guide pipe (3) is provided with a wave-transparent metal protective net (3b).

6. The clamshell-free microwave concrete breaking apparatus of claim 1, wherein, The microwave shielding curtain (23) comprises a microwave shielding curtain body (23a) and an internal metal shielding net (23b) arranged inside the microwave shielding curtain body (23a).

7. The clamshell-free microwave concrete breaking apparatus of claim 1, wherein, The microwave heating device (8) comprises a microwave source, a magnetron, a waveguide (8a), and a microwave absorber, the microwave source, the magnetron, and the microwave absorber are all installed on the waveguide (8a), and the waveguide (8a) has a waveguide outlet end (8b) which is uniformly arranged at a set interval.

8. The clamshell-free microwave concrete breaking apparatus of claim 1, wherein, The inlet end and the outlet end of the cavity of the main body (1) are provided with microwave detectors (9); the top of the outlet end of the cavity of the main body (1) is provided with a cooling device, and the cooling device is connected with an external water source.

9. The clamshell-free microwave concrete breaking apparatus of claim 1, wherein, The main body (1) is externally provided with an integrated metal dust cover (11), the bottom of the integrated metal dust cover (11) is provided with a drain port (11a); and the inside of the integrated metal dust cover (11) is filled with a heat insulation substance. The upper part of the microwave crushing zone (15) of the main body (1) is provided with an exhaust device (10) for exhausting water vapor generated during microwave heating.

10. A microwave-induced, non-thermal method of breaking up concrete without opening, characterized in that, The non-opening microwave concrete crushing equipment according to any one of claims 1 to 9 comprises the following steps: S1: turning on the transmission heating device, and pouring the waste concrete to be crushed on the transmission heating device at a set speed; S2: the transmission heating device rotates to carry the waste concrete to be crushed to move towards the cavity of the main body (1), and the waste concrete to be crushed passes through the microwave shielding zone (12), the microwave absorbing zone (13), and the microwave reflecting zone (14), and the corresponding microwave shielding curtain (23), microwave absorbing curtain (22), and microwave reflecting curtain (21) in each zone closely sweep the moving waste concrete to be crushed; S3: entering the microwave crushing zone (15) is subjected to uniform microwave irradiation for crushing; the water vapor overflowing from the waste concrete and the solid dust generated after the waste concrete is broken are discharged; and the crushed and separated concrete and coarse aggregate are obtained; S4: the crushed and separated concrete and coarse aggregate pass through the microwave reflecting zone (14), the microwave absorbing zone (13), and the microwave shielding zone (12), and the corresponding microwave reflecting curtain (21), microwave absorbing curtain (22), and microwave shielding curtain (23) in each zone closely sweep the moving crushed and separated concrete and coarse aggregate; and the crushed and separated concrete and coarse aggregate are cooled to obtain the crushed coarse aggregate.

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