CN115075609A - Device and method for realizing concrete self-cracking crushing and aggregate recovery by utilizing microwave heating - Google Patents
Device and method for realizing concrete self-cracking crushing and aggregate recovery by utilizing microwave heating Download PDFInfo
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- CN115075609A CN115075609A CN202210668229.7A CN202210668229A CN115075609A CN 115075609 A CN115075609 A CN 115075609A CN 202210668229 A CN202210668229 A CN 202210668229A CN 115075609 A CN115075609 A CN 115075609A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 45
- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 238000005336 cracking Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000005553 drilling Methods 0.000 claims abstract description 53
- 238000003756 stirring Methods 0.000 claims abstract description 50
- 239000002699 waste material Substances 0.000 claims abstract description 43
- 238000004064 recycling Methods 0.000 claims abstract description 23
- 238000010276 construction Methods 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 239000002352 surface water Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
- E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a device and a method for realizing self-cracking and breaking of concrete and recycling of aggregate by utilizing microwave heating, wherein the device comprises an aggregate recycling device, a mechanical breaking device and a mechanical supporting device; positioning a region to be constructed through a mechanical supporting device; performing microwave irradiation heating, wall surface drilling, water spraying and crushing on the concrete wall surface to be heated and crushed through a microwave heating device, a drilling device and a water supply device of the mechanical crushing device; the crushed waste materials are collected, screened and classified and guided out through an aggregate recovery device stirring barrel, a double-layer aggregate sieve plate and an aggregate collecting box. The device can screen recyclable coarse aggregate from waste materials after the concrete wall is dismantled, solves the problem of recycling engineering waste materials, improves the construction efficiency, reduces the environmental pollution and reduces the energy consumption.
Description
Technical Field
The invention belongs to the technical field of concrete buildings, and particularly relates to a device and a method for crushing a concrete wall and recycling aggregate based on a microwave technology.
Background
At present, due to the requirement of novel urbanization construction, the dismantling and repairing of a large amount of concrete buildings become an important reason for limiting the development of small and medium-sized and even large-sized cities. Therefore, the problem of rapidly dismantling or repairing a large number of concrete walls has become a topic of intense research.
As the absorption characteristics of aggregate, mortar and pore water in the concrete to microwaves are different, internal stress generated by different thermal expansions can cause crystal fracture and crystal-crossing fracture inside the concrete, so that internal damage and microcrack of the concrete are caused, and the uniaxial tensile strength, the compressive strength and the point load strength of the concrete are reduced.
The existing method for dismantling concrete wall: mechanical demolition, blasting demolition, expanding agent demolition, and manual demolition by using hydraulic tongs. The mechanical dismantling noise is large, the energy consumption is high, and the dust pollution is serious; blasting demolition has certain influence on safety of constructors and peripheral facilities; the environment pollution problem exists in the demolition of the expanding agent, and the expanding agent can also affect the health of people; the manual dismantling of the hydraulic pliers has high requirements on the bodies of workers and wastes time and labor.
The method solves the technical problems and has practical significance for the development of the concrete wall surface self-cracking and crushing and aggregate recycling technology.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to improve the construction efficiency, reduce the environmental pollution and reduce the energy loss in the concrete dismantling process, screen recyclable coarse aggregates from waste materials after the concrete wall is dismantled, solve the problem of recycling of waste materials in engineering and provide the device and the method for assisting the self-cracking and the aggregate recycling based on microwave heating.
The purpose of the invention is realized by the following technical scheme.
On one hand, the invention provides a device for realizing self-cracking crushing and aggregate recovery of concrete by utilizing microwave heating, which comprises an aggregate recovery device, a mechanical crushing device and a mechanical supporting device;
the mechanical crushing device is arranged at the upper part of the aggregate recovery device and comprises a microwave heating device, a drilling device, a water supply device and a control center, wherein the microwave heating device, the drilling device, the water supply device and the control center are carried by a mechanical arm which can be contracted and rotated;
the aggregate recovery device comprises a waste collection port corresponding to the microwave heating device and the drilling device, a stirring barrel positioned on the side of the waste collection port, and a double-layer aggregate sieve plate and an aggregate collection box which are arranged below the stirring barrel;
the mechanical supporting device is positioned at the bottom of the aggregate recovery device and comprises a hydraulic supporting column, a supporting plate and universal wheels;
the control center is respectively connected with the microwave heating device, the drilling device and the water supply device, and is used for performing microwave irradiation, wall surface drilling, water spraying and crushing on the concrete wall surface to be heated and crushed;
the aggregate recovery device collects, screens and classifies crushed waste materials.
Preferably, the microwave heating device comprises a mechanical arm, one end of the mechanical arm is fixedly connected with the shell of the mechanical protection device, the end part of the mechanical arm is connected with a microwave generator through a microwave control rotating device, and the front part of the microwave generator is provided with an anti-collision and wave-penetration-proof medium.
Preferably, the drilling device comprises a mechanical arm, one end of the mechanical arm is fixedly connected with the shell of the mechanical protection device, a drilling rotating device is arranged at the end part of the mechanical arm, and a mechanical drill bit is connected to the end part of the drilling rotating device.
Preferably, the water supply device comprises a mechanical arm, one end of the mechanical arm is fixedly connected with the shell of the mechanical protection device, and the water delivery pipe penetrates through the mechanical arm and is communicated with an annular water supply pipe and a wall surface moisture meter; the annular water supply pipe adopts an annular pipeline with holes.
Preferably, be equipped with five soft stirring rods in the agitator, the cross section is circular, is the symmetric distribution along the central rod including a central stirring rod and along central stirring rod periphery.
Preferably, the stirring barrel adopts a metal mesh pore structure, and the lower part of the stirring barrel can be opened and closed.
Preferably, the double-layer aggregate sieve plate is connected with the inner wall of the aggregate recovery device through the hook and is obliquely arranged below the stirring barrel, and the inclination directions of the double-layer aggregate sieve plate are consistent.
Preferably, sieve pores with different apertures are arranged on the upper sieve plate and the lower sieve plate along the double-layer aggregate sieve plate, and the sieve pores of the upper sieve plate are larger than those of the lower sieve plate; the double-layer aggregate sieve plate is provided with a vibrator.
Preferably, the waste collecting port is provided with a soft elastic waste collecting plate, and the outer side wall of the aggregate recovery device is provided with a spring plug.
In another aspect of the present invention, there is provided a method for implementing concrete self-cracking and breaking and aggregate recovery by microwave heating, comprising:
setting a construction area of the concrete surface, the drilling depth and the drilling width of the drilling device according to the thickness of the concrete wall surface, and setting the microwave power and the heating time of the microwave heating device;
setting the water supply amount of a water supply device according to the water content of the wall surface;
setting the lifting or descending height of the hydraulic support shaft according to the height of the construction concrete surface; and the stirring time of the stirring barrel in the aggregate recycling device;
the drilling device is used for drilling a hole on the concrete surface, and the annular pipeline of the water supply device seeps water into the concrete in the hole;
when the water content in the concrete reaches 5.75 percent or more, the water supply device stops injecting water; the microwave heating device irradiates and heats a drilling area, the concrete surface is subjected to self-cracking, and the mechanical drill bit simultaneously crushes the self-cracking concrete surface; the waste material enters the aggregate recovery device through the waste material collecting opening;
completing the construction operation of the concrete surface of the drilling area, and guiding the waste into the aggregate recycling device through the waste collecting plate; starting a stirring barrel and a vibrator, stirring the waste materials into fine materials by the stirring barrel, screening coarse aggregate by the fine materials through a double-layer aggregate sieve plate in a vibration mode, collecting, and discharging cement mortar;
after the concrete wall surface of one construction area is broken, the aggregate recycling device and the mechanical protection device enter the next construction area and the process is repeated.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. according to the invention, the drill bit is adopted to drill the concrete, the water delivery pipeline seeps water into the concrete hole, microwave heating is assisted, the self-cracking of the concrete is realized, and meanwhile, the drill bit assists in thoroughly crushing the concrete; the concrete waste material that drops passes through the garbage collection mouth and collects aggregate recovery unit again, carries out the waste material stirring through agitator and soft stirring rod, and double-deck aggregate sieve filters the thin material that the stirring formed, separates repeatable aggregate, realizes the cyclic utilization of old aggregate.
2. Mechanical drill bits, microwave generators, double-deck aggregate sieve, garbage collection board and water piping in the equipment all can dismantle, make things convenient for the regular cleaning change operation. The mixing tank and the water supply tank can also be periodically disassembled for maintenance.
3. The aggregate recovery device is synchronously matched with the microwave heating device, so that the requirement of recycling the waste materials when the concrete is dismantled is met.
The device has simple structural design, is convenient for disassembly and assembly of parts, is easy to operate, has high automation degree and high aggregate separation efficiency, and can be applied to engineering practice.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic structural diagram of a device for assisting self-cracking and breaking of concrete and recycling of aggregate based on microwave heating;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a double-layer aggregate sieve plate and an aggregate collecting box;
in the figure: 1. a microwave heating device, 2, a mechanical protection device, 3, an anti-collision and anti-wave-transmission medium, 4, a microwave generator, 5, a drilling device, 6, a mechanical drill bit, 7, an annular water supply pipe, 8, a control center, 9, a water supply tank, 10, a water supply device, 11, a stirring barrel, 12, an aggregate collecting box, 13, a double-layer aggregate sieve plate, 14, a mortar waste discharge port, 15, a support plate, 16, a protective shell and 17, universal wheel, 18, spring plug, 19, garbage collection board, 20, water supply and drilling control line, 21, stirring barrel control line, 22, microwave heating control line, 23, water delivery pipe, 24, soft stirring rod, 25, aggregate recovery device, 26, garbage collection port, 27, hook, 28, hydraulic support column, 29, sieve hole, 30, microwave control rotating device, 31, wall surface moisture meter, 32, drilling rotating device, 33 and vibrator.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, which are provided herein for the purpose of illustrating the invention and are not to be construed as limiting the invention.
The concrete self-cracking crushing and aggregate recycling device based on microwave heating disclosed by the invention comprises an aggregate recycling device 25, a mechanical protection device 2 and a mechanical support device, wherein the mechanical protection device 2 is placed on the upper part of the aggregate recycling device 25, the mechanical support device is positioned at the bottom of the aggregate recycling device, the aggregate recycling device 25 is supported and moved through universal wheels 17, and soft material protection shells 16 are arranged outside the universal wheels 17.
The mechanical crushing device 2 is placed on the upper portion of the aggregate recovery device 25, and a water supply tank 9, a control center 8, a water delivery pipe 23 and a plurality of control lines are arranged inside the mechanical crushing device 2 respectively, so that the normal operation of concrete crushing is guaranteed. The shell of the mechanical crushing device 2 is provided with a microwave heating device 1, a drilling device 5 and a water supply device 10 which are carried by a mechanical arm and can be contracted and rotated.
The microwave heating device 1 comprises a mechanical arm, one end of the mechanical arm is fixedly connected with the shell of the mechanical protection device 2, the end part of the mechanical arm is connected with a microwave generator 4 through a microwave control rotating device 30, and an anti-collision and wave-transmission-proof medium 3 is arranged at the front part of the microwave generator 4.
The water supply device 10 comprises a mechanical arm with one end fixedly connected to the shell of the mechanical protection device 2, the water delivery pipe 23 penetrates through the mechanical arm and is communicated with an annular water supply pipe 7 and a wall surface moisture meter 31, and the annular water supply pipe 7 adopts an annular pipeline with holes and is circularly seeped into the drilled holes. The wall surface moisture meter is arranged inside the water supply device and used for detecting the moisture content of the construction concrete wall surface.
The front side of the microwave generator 4 is provided with an anti-collision and anti-penetration medium 3, the anti-collision and anti-penetration medium is made of a material with a relatively low relative dielectric constant and a relatively low loss factor, and the embodiment adopts perfluorinated ethylene. The anti-collision and anti-penetration medium has the functions of protecting the microwave generator, preventing microwave leakage and microwave reflection damage. The microwave generator 4 can be disassembled and replaced. The interior of the drilling rotating device 32 at the end part of the drilling device 5 is connected with the mechanical drill bit 6 through threads, so that the mechanical drill bit is convenient to detach and replace. The annular water supply pipe 7 at the end part of the water supply device 10 can be detached, so that the water supply pipe can be conveniently and periodically overhauled.
The aggregate recovery device 25 comprises a stirring barrel 11, an aggregate collecting box 12 and a double-layer aggregate sieve plate 13. Five soft stirring rods 24 are axially and parallelly arranged in the stirring barrel 11, the cross section of each soft stirring rod is circular, each soft stirring rod 24 comprises a central stirring rod and four stirring rods uniformly distributed along the periphery of the central stirring rod, and the four stirring rods except the stirring rod at the central shaft are symmetrically distributed in the stirring barrel, as shown in figure 2; performing primary treatment on the waste, and grinding the waste into fine materials through collision without damaging aggregate; the lower side wall of the mixing barrel 11 can be freely opened and closed. The stirring barrel adopts a metal mesh pore structure. The lower part of the stirring barrel 11 is provided with a double-layer aggregate sieve plate 13, as shown in figure 3, sieve holes 29 with different apertures are arranged along the upper sieve plate and the lower sieve plate of the aggregate sieve plate, and the sieve holes of the upper sieve plate are larger than those of the lower sieve plate; the double-layer aggregate sieve plate is provided with a vibrator. Double-deck aggregate sieve 13 is connected with aggregate recovery unit's inner wall through couple 27, and double-deck aggregate sieve 13 sets up along agitator 11 below slope, and inclination is unanimous with the direction, and the fine material accessible gravity action after the screening freely slides to the aggregate collecting box 12 in. The bottom of the aggregate recovery device 25 is provided with a mortar particle discharge port.
A waste collecting opening 26 is formed in one side of the stirring barrel 11 in the aggregate recovery device 25, a soft elastic waste collecting plate 19 is arranged on the waste collecting opening 26, the waste collecting plate 19 is connected with the inner side of the aggregate recovery device 25 through hooks 27 on two sides, one end of the waste collecting plate 19 is connected with the stirring barrel 11 placed on the upper portion of the inner side of the aggregate recovery device 25, and the other end of the waste collecting plate is hung on the side wall of the aggregate recovery device 25. The outer side wall of the aggregate recovering device 25 is provided with a spring plug 18.
The bottom of the aggregate recycling device is a mechanical supporting device which comprises a hydraulic supporting column 28, a supporting plate 15 and universal wheels 17; by 4 liftable hydraulic support posts 28 as the back shaft, the back shaft bottom sprag is in backup pad 15, has 6 universal wheels 17 under backup pad 15, can remove the device, and the universal wheel is protected by soft protective housing 16.
The control center 8 is connected to a microwave heating control line 22, a water supply, drilling control line 20 and a mixing drum control line 21. The control center 8 is connected with a microwave generator through a microwave heating control line 22 and controls the working power and time of the microwave generator and the rotation angle of the microwave heating surface; the control center 8 controls the water supply amount, the expansion amount of the annular water supply pipe and the water content of the detection wall surface by connecting with a water supply control line; the control center 8 controls the drilling depth, drilling width and drilling angle of the mechanical drill bit by connecting the drilling control lines; the control center 8 controls the working time of the mixing drum and the opening and closing time of the wall of the mixing drum by connecting a control line 21 of the mixing drum. The microwave heating device, the drilling device and the water supply device can be independently controlled respectively, the control lines are not interfered with each other, and the working efficiency is improved.
In the device, the mechanical drill 6, the microwave generator 4, the double-layer aggregate sieve plate 13, the soft stirring rod 24 and the annular water supply pipe 7 can be detached and replaced, so that the regular inspection and cleaning operation is convenient. The mechanical protection device 2 can be opened, and the control center 8 and the control line are convenient to overhaul. The aggregate sieve plate can be replaced according to the aggregate allowance of the mortar waste discharge port 14 after the concrete wall surface is broken, and the aggregate recovery requirements of different pore sizes are met. Be equipped with vibrator 33 on the double-deck aggregate sieve 13, after agitator 11 stopped working, vibrator 33 began to work, and the two operates alone, all adopts intelligent information to control.
Because the broken concrete wall surface is composed of aggregate and cement mortar, in order to recycle the recycled aggregate, the requirements on the rotation speed and the rotation time of the stirring barrel are longer, and the soft stirring rod 24 is composed of a rubber material with the strength and hardness far lower than those of the aggregate; not only ensures that the aggregate is not damaged, but also realizes the separation operation of the aggregate and cement mortar.
The working principle of the invention is as follows:
and drilling, water seepage, microwave heating, drill bit assisted crushing and aggregate recycling are carried out on the concrete wall surface to be constructed, so that the concrete wall surface dismantling and aggregate collecting processes are realized.
The device is moved to an indoor or outdoor concrete wall surface, and the power supply is started. Setting the drilling depth, the drilling width, the microwave heating power and the working time according to the thickness of the concrete wall surface and the size of a construction surface; setting the water yield of the water supply device according to the wall surface water content measured by the wall surface moisture meter; and setting the lifting or descending height of the hydraulic support shaft according to the height of the construction concrete surface.
Firstly, a mechanical drill bit of a drilling device drills a concrete wall, after drilling is finished, a water supply device extends an annular water supply pipe into the hole to seep water into the concrete wall, and when a wall surface moisture meter detects that the water content of the construction wall surface meets the construction requirement, a microwave heating device carries out microwave heating on the construction wall surface when the water content in the concrete reaches 5.75% or above; the anti-collision and anti-penetration medium at the front end of the microwave heating device is tightly attached to the construction wall surface, so that the microwave leakage is prevented; during the microwave heating process, the mechanical drill bit is used for drilling another working surface for repeating the previous operation. After the microwave heating is finished, the concrete wall surface is subjected to self-cracking, and the mechanical drill bit assists in dismantling the concrete wall body. Concrete waste material gets into the leading-in agitator of garbage collection board through the garbage collection mouth, after the waste material reaches the threshold value in the agitator, the bung hole is closed, start agitator and vibrator, begin rotatory grinding waste material, accomplish the stirring back, the agitator lower part is opened, double-deck aggregate sieve is poured into to the fine aggregate that grinds, recoverable aggregate gets into the aggregate collecting box under the action of gravity behind the vibratory screen, cement mortar is discharged at the mortar discharge port of bottom.
After the operation of removing part of the concrete wall surface is completed, the universal wheels drive the aggregate recovery device and the mechanical protection device to enter the next construction area, and the operation is repeated.
According to the invention, the concrete wall surface to be treated is sequentially drilled, seeped and heated by microwaves, so that the self-cracking of the concrete is realized, the concrete is recycled through the auxiliary dismantling of the drill bit, the waste material collection, the stirring and the screening, the construction efficiency is improved, the environmental pollution is reduced, the energy loss is reduced, the recyclable coarse aggregate can be screened from the waste material after the concrete wall surface is dismantled, and the problem of recycling of engineering waste materials is solved.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (10)
1. A device for realizing self-cracking crushing and aggregate recovery of concrete by microwave heating is characterized by comprising an aggregate recovery device, a mechanical crushing device and a mechanical supporting device;
the mechanical crushing device is arranged at the upper part of the aggregate recovery device and comprises a microwave heating device, a drilling device, a water supply device and a control center, wherein the microwave heating device, the drilling device, the water supply device and the control center are carried by a mechanical arm which can be contracted and rotated;
the aggregate recovery device comprises a waste collection port corresponding to the microwave heating device and the drilling device, a stirring barrel positioned on the side of the waste collection port, and a double-layer aggregate sieve plate and an aggregate collection box which are arranged below the stirring barrel;
the mechanical supporting device is positioned at the bottom of the aggregate recovery device and comprises a hydraulic supporting column, a supporting plate and universal wheels;
the control center is respectively connected with the microwave heating device, the drilling device and the water supply device, and is used for performing microwave irradiation, wall surface drilling, water spraying and crushing on the concrete wall surface to be heated and crushed;
the aggregate recovery device collects, screens and classifies crushed waste materials.
2. The device of claim 1, wherein the microwave heating device comprises a mechanical arm with one end fixed on the housing of the mechanical protection device, the end of the mechanical arm is connected with the microwave generator through a microwave control rotating device, and the front part of the microwave generator is provided with an anti-collision and wave-penetration-proof medium.
3. The device of claim 1, wherein the drilling device comprises a mechanical arm with one end fixed to the housing of the mechanical protection device, and the end of the mechanical arm is provided with a drilling rotation device, and the end of the drilling rotation device is connected with a mechanical drill bit.
4. The device as claimed in claim 1, wherein the water supply device comprises a mechanical arm with one end fixed on the shell of the mechanical protection device, and the water delivery pipe passes through the mechanical arm and is communicated with an annular water supply pipe and a wall surface moisture meter; the annular water supply pipe adopts an annular pipeline with holes.
5. The apparatus of claim 1, wherein the mixing drum has five soft mixing rods with a circular cross section, and the mixing rods comprise a central mixing rod and are symmetrically distributed along the central rod along the periphery of the central mixing rod.
6. The device of claim 1, wherein the stirring barrel is a metal mesh hole structure, and the stirring barrel can be opened and closed below.
7. The device of claim 1, wherein the double-layer aggregate sieve plate is connected with the inner wall of the aggregate recovery device through a hook and is obliquely arranged along the lower part of the stirring barrel, and the inclination directions of the double-layer aggregate sieve plate are consistent.
8. The apparatus of claim 1, wherein the upper and lower sieve plates are provided with sieve holes with different apertures along the double-layer aggregate sieve plate, and the sieve holes of the upper sieve plate are larger than those of the lower sieve plate; the double-layer aggregate sieve plate is provided with a vibrator.
9. The apparatus of claim 1, wherein the garbage collection port is provided with a soft elastic garbage collection plate, and the outer side wall of the aggregate recovering device is provided with a spring plug.
10. A method for realizing self-cracking and breaking of concrete and recovering aggregate by using microwave heating of the device according to any one of claims 1-9, which is characterized by comprising the following steps:
setting a construction area of the concrete surface, the drilling depth and the drilling width of the drilling device according to the thickness of the concrete wall surface, and setting the microwave power and the heating time of the microwave heating device;
setting the water supply amount of the water supply device according to the water content of the wall surface;
setting the lifting or descending height of the hydraulic support shaft according to the height of the construction concrete surface; and the stirring time of the stirring barrel in the aggregate recycling device;
the drilling device is used for drilling a hole on the concrete surface, and the annular pipeline of the water supply device seeps water into the concrete in the hole;
when the water content in the concrete reaches 5.75 percent or more, the water supply device stops injecting water; the microwave heating device irradiates and heats a drilling area, the concrete surface is subjected to self-cracking, and the mechanical drill bit simultaneously crushes the self-cracking concrete surface; the waste material enters the aggregate recovery device through the waste material collecting opening;
completing the construction operation of the concrete surface of the drilling area, and guiding the waste into the aggregate recycling device through the waste collecting plate; starting a stirring barrel and a vibrator, stirring the waste materials into fine materials by the stirring barrel, screening coarse aggregate by the fine materials through a double-layer aggregate sieve plate in a vibration mode, collecting, and discharging cement mortar;
after the concrete wall surface of one construction area is broken, the aggregate recycling device and the mechanical protection device enter the next construction area and the process is repeated.
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| CN202210668229.7A CN115075609B (en) | 2022-06-14 | 2022-06-14 | Device and method for realizing self-cracking and crushing of concrete and recovery of aggregate by utilizing microwave heating |
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| CN202210668229.7A CN115075609B (en) | 2022-06-14 | 2022-06-14 | Device and method for realizing self-cracking and crushing of concrete and recovery of aggregate by utilizing microwave heating |
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| CN112827613A (en) * | 2021-02-22 | 2021-05-25 | 西安建筑科技大学 | Tunnel lining broken aggregate recovery device and method based on microwave technology |
| CN112829089A (en) * | 2021-02-22 | 2021-05-25 | 西安建筑科技大学 | Equipment and method for crushing partial tunnel lining by microwaves |
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2022
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| CN112081409A (en) * | 2020-09-21 | 2020-12-15 | 东南大学 | Underground continuous wall dismantling device and method based on microwave fracturing concrete technology |
| CN112827613A (en) * | 2021-02-22 | 2021-05-25 | 西安建筑科技大学 | Tunnel lining broken aggregate recovery device and method based on microwave technology |
| CN112829089A (en) * | 2021-02-22 | 2021-05-25 | 西安建筑科技大学 | Equipment and method for crushing partial tunnel lining by microwaves |
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| CN115075609B (en) | 2024-03-01 |
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