CN113233827A - Production process of recycled concrete - Google Patents
Production process of recycled concrete Download PDFInfo
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- CN113233827A CN113233827A CN202110101060.2A CN202110101060A CN113233827A CN 113233827 A CN113233827 A CN 113233827A CN 202110101060 A CN202110101060 A CN 202110101060A CN 113233827 A CN113233827 A CN 113233827A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/526—Cleaning with brushes or scrapers with scrapers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a recycled concrete production process in the technical field of recycled concrete production, which comprises the following specific steps: the method comprises the following steps: washing the concrete blocks to be crushed, and then standing and air-drying the washed concrete blocks; step two: throwing the cleaned and air-dried concrete blocks into a crushing and screening device, and starting the crushing and screening device after throwing a proper amount of the concrete blocks; step three: after the crushing and screening equipment is started for a period of time, taking out concrete block crushed slag with proper size screened out from the crushing and screening equipment; step four: replacing natural materials such as sand stones with the concrete block crushed slag taken out from the third step, adding cement, water and the like, and uniformly stirring to form the required recycled concrete; the invention solves the problem that when concrete fragments are manufactured in the prior art, the inner wall of the frame body is easy to stick and impact the left powder, so that the concrete fragments cannot achieve an ideal crushing effect when being crushed and impacted.
Description
Technical Field
The invention relates to the technical field of recycled concrete production, in particular to a recycled concrete production process.
Background
There are two main methods for treating waste concrete materials: the first treatment mode of the waste concrete is a burying mode, and the influence on the environment is large; the other treatment mode of waste concrete is to mix the waste concrete blocks after crushing, cleaning and grading according to a certain proportion and grade, partially or totally replace natural aggregates such as sand stones and the like, and then add cement, water and the like to prepare new concrete.
In the invention case disclosed in the prior art and related to the field of recycled concrete production, a recycled concrete production system disclosed in the patent application number of CN202010444857.8 is invented, and comprises a frame body, a box body and a spraying assembly, wherein two groups of crushing rollers are arranged right below a feed inlet of the box body, a plurality of groups of plate hammers are arranged on each crushing roller, a partition plate is arranged below each two groups of crushing rollers, two sides of each partition plate are respectively connected with a shaping frame plate, the shaping frame plates and the inner side wall of the box body jointly form a shaping area, a feed inlet is arranged at the joint of each partition plate and the shaping frame plates, a rotating roller is further arranged in the box body, a scraper is arranged on each rotating roller, a mounting plate is arranged in each shaping area, a spherical boss is arranged on one side of each mounting plate, a driving assembly is arranged on each rotating roller and each crushing roller jointly, a discharge outlet is arranged on one side of each partition plate, and a screening assembly is arranged below the discharge outlet.
When carrying out the breakage to the concrete piece among the prior art, adopt crushing roller and board hammer cooperation, but this kind of crushing mode can't accomplish the breakage to the concrete piece of crushing roller both sides, crushing effect is poor, and when the crushing roller rotated simultaneously and drives the board hammer and stir concrete piece and support body inner wall striking, the powder that the striking was left over is stained with on leading to the support body inner wall easily, and the powder accumulates gradually and piles up, can lead to the concrete piece can't reach the crushing effect of ideal when broken striking.
Based on the above, the invention designs a recycled concrete production process to solve the above problems.
Disclosure of Invention
The invention aims to provide a recycled concrete production process, which aims to solve the problems that in the prior art, when concrete blocks are crushed, a crushing roller is matched with a plate hammer, but the crushing mode cannot crush the concrete blocks on two sides of the crushing roller, the crushing effect is poor, and meanwhile, when the crushing roller rotates to drive the plate hammer to stir the concrete blocks to collide with the inner wall of a frame body, powder left by collision is adhered to the inner wall of the frame body easily, the powder is accumulated and accumulated gradually, and the concrete blocks cannot achieve the ideal crushing effect during crushing collision.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of recycled concrete comprises the following specific steps:
the method comprises the following steps: washing the concrete blocks to be crushed, and then standing and air-drying the washed concrete blocks;
step two: throwing the cleaned and air-dried concrete blocks into a crushing and screening device, and starting the crushing and screening device after throwing a proper amount of the concrete blocks;
step three: after the crushing and screening equipment is started for a period of time, taking out concrete block crushed slag with proper size screened out from the crushing and screening equipment;
step four: replacing natural materials such as sand stones with the concrete block crushed slag taken out from the third step, adding cement, water and the like, and uniformly stirring to form the required recycled concrete;
the crushing and screening device comprises a casing, wherein two side surfaces of the casing are respectively provided with a guide port, the two guide ports are symmetrically arranged and are obliquely arranged, the top of the casing is provided with a feed port, the two guide ports are internally provided with rollers, rotating shafts of the two rollers are jointly and fixedly connected with a material pushing plate, a first sieve plate parallel to the position of the guide port is fixedly arranged below the material pushing plate, the material pushing plate is vertically arranged with the first sieve plate, two sides of the front bottom of the material pushing plate are respectively and fixedly connected with a connecting plate vertical to the material pushing plate, the top end of each connecting plate is hinged with an obliquely arranged push rod, the right side of the push rod is provided with a trapezoidal barrier plate fixed on the inner wall of the casing, two sides of the side surface of the trapezoidal barrier plate, which are far away from the inner wall of the casing, are respectively provided with a guide groove for limiting the movement of the push rod, and the two guide grooves are jointly and slidably assembled with a T-shaped scraping plate, the support arm of the T-shaped scraping plate is positioned above the push rod, the back of the pushing plate is connected with a power mechanism, the middle part of the casing is provided with a first discharge hole, a sealing plate is clamped on the first discharge hole in a sealing manner, a second sieve plate which is in sealing butt joint with the inner wall of the casing and is obliquely arranged is arranged below the sealing plate, and the bottom of the casing is provided with a second discharge hole;
when the process of the invention is used for producing recycled concrete, firstly, the first step is carried out, the concrete block to be crushed is washed clean, then the washed concrete block is kept stand and dried in air, so that the clay dirt adhered to the surface of the concrete block to be crushed is cleaned, the crushed slag of the concrete block to be crushed is not mixed with impurities as much as possible, so that the quality of the recycled concrete produced in the later period is better, then the operation in the second step is carried out, the concrete block washed, kept stand and dried in the first step is thrown into crushing and screening equipment, when the concrete block is washed, kept stand, dried in air and crushed, the generated fragments can not be mixed with the water remained on the surface of the concrete block to form thick slurry, on one hand, the normal use of the equipment is influenced, on the other hand, the thick slurry can not be generated and is stuck on the crushed concrete block to influence the quality of the crushed concrete block, further improving the quality of the recycled concrete produced in the later stage, after the crushing and screening equipment in the second step is put into proper amount, the crushed concrete blocks are washed, placed, left and dried, the power mechanism is started, the power mechanism is matched with the rollers and the guide port to lead the material pushing plate to do regular reciprocating motion along the top of the first sieve plate, when the material pushing plate moves towards the direction of the trapezoid blocking plate, the connecting plate can move along the same direction of the material pushing plate, the connecting plate can extrude the push rod when moving towards the direction of the trapezoid blocking plate, meanwhile, under the blocking action of the guide groove, the top end of the push rod moves upwards along the guide groove and extrudes the T-shaped scraping plate, the T-shaped scraping plate also moves upwards along the guide groove, when the material pushing plate moves towards the direction of the trapezoid blocking plate to the maximum position, the top of the T-shaped scraping plate just contacts the inner wall of the top of the machine shell, at the moment, due to the inertia effect, the concrete blocks in the machine shell can collide with the trapezoid blocking plate, the concrete blocks are crushed, when the material pushing plate moves to the initial position, the crushed concrete blocks roll to the initial position along the inclined first sieve plate under the action of self weight, the small concrete blocks with proper size and smaller size can pass through the first sieve plate and fall between the first sieve plate and the second sieve plate in the rolling process, the small concrete blocks can pass through the second sieve plate and fall to the bottom of the casing, and can be discharged and collected by the second discharge hole, the concrete blocks with proper size (namely the concrete blocks required for producing recycled concrete) can be remained at the top of the second sieve plate, after the sealing plate is opened, the concrete blocks can be directly obtained from the first discharge hole, when the material pushing plate moves to the initial position, the pushing rod cancels the pushing action on the T-shaped scraping plate, the T-shaped scraping plate can restore to the initial state under the action of self weight, and the surface of the trapezoidal blocking plate can be scraped and cleaned once by the T-shaped scraping plate in the process of restoring to the initial position, the powder left after the impact of the concrete blocks adhered to the surface of the trapezoid barrier plate is removed, so that each impact of the concrete blocks has a good crushing effect, when the concrete block crushed stone raw material required by recycled concrete is manufactured through the crushing and screening equipment, the pushing plate can continuously push the concrete blocks to impact the trapezoid barrier plate by utilizing the regular reciprocating pushing action of the pushing plate until the crushing degree of the concrete blocks meets the requirement, in addition, compared with the mode of crushing the concrete blocks by matching the crushing roller and the plate hammer, the mode of crushing the concrete blocks cannot cause the problem that partial concrete blocks cannot be crushed, in addition, when the pushing plate moves to the initial position, the T-shaped scraping plate can scrape and clean the surface of the trapezoid barrier plate once in the process of recovering the initial position, the powder left after the impact of the concrete blocks adhered to the surface of the trapezoid barrier plate is removed, and the problem that when the plate hammer is driven by the rotation of the crushing roller to stir the plate hammer to impact the inner wall of the frame body in the prior art is solved, glue the powder that the striking was left over on leading to the support body inner wall easily, the powder accumulates gradually and piles up, can lead to the concrete piece can't reach the problem of the crushing effect of ideal when broken striking, and the concrete piece disintegrating slag that will take out finally replaces natural materials such as grit, adds cement, water etc. and stirs the mixing and form required regeneration concrete.
As a further scheme of the invention, the power mechanism comprises a driving rod hinged with the back of the material pushing plate, the driving rod is obliquely arranged, one end of the driving rod, which is far away from the material pushing plate, is fixedly connected with a straight rod, a hydraulic cylinder with an output shaft rotatably connected with the straight rod is arranged above the straight rod, and the hydraulic cylinder is fixedly connected with the top of the shell; during operation, hydraulic cylinder extension can promote the straight-bar and move down along hydraulic cylinder extension direction, and the straight-bar moves down can promote the actuating lever top and move down, and the actuating lever other end can be followed its and scraping wings pin joint upset to the actuating lever can promote the scraping wings and move toward trapezoidal barrier plate department, on the contrary, when hydraulic cylinder contracts, straight-bar, actuating lever and scraping wings all resume to initial position.
As a further scheme of the invention, a long through groove is formed in the middle of the T-shaped scraping plate, a lead screw is rotatably assembled in the middle of the long through groove, both ends of the lead screw are fixedly connected with grinding wheels contacting with the front surface of the trapezoidal barrier plate, a moving block clamped in the long through groove is in threaded connection with the lead screw, and one end of the moving block is fixedly connected with a square scraping plate for scraping the front surface of the T-shaped scraping plate; when the T-shaped scraping plate moves, the grinding wheel rotates under the action of the front face of the trapezoidal blocking plate, the lead screw rotates to drive the lead screw to rotate, and the lead screw rotates to drive the square scraping plate to transversely move on the front face of the T-shaped scraping plate, the square scraping plate transversely moves on the front surface of the T-shaped scraping plate, so that powder left after the residual concrete blocks on the surface of the square scraping plate are impacted can be scraped and removed, and the crushing effect of the subsequent concrete blocks is ensured.
As a further scheme of the invention, the top end of the output shaft of the hydraulic cylinder is also rotatably connected with a mandril, the mandril penetrates through the first sieve plate and is in sliding connection with the first sieve plate, the part of the casing, which is positioned below the first sieve plate, is arranged into an arc shape, the second sieve plate is rotatably connected with the casing through a rotating shaft fixed in the middle of the second sieve plate, and a gas spring used for keeping the second sieve plate at an initial position is arranged below the second sieve plate; when the second sieve plate is obliquely and statically arranged, part of small fragments falling from the first sieve plate are mutually extruded and clamped in the sieve holes of the second sieve plate, on one hand, the generation of hole blockage can be caused, on the other hand, the small concrete fragments with small volume which do not meet the requirements are also contained in the concrete fragments taken from the top surface of the second sieve plate, the subsequent produced recycled concrete does not meet the requirements, through arranging the ejector rod and the gas spring, the second sieve plate is rotationally connected with the machine shell through the rotating shaft fixed in the middle of the second sieve plate, the second sieve plate can rotate around the rotating shaft in the middle of the second sieve plate and keep inclining under the action of the gas spring, when the hydraulic cylinder extends, the ejector rod is pressed down, the ejector rod acts on the higher end of the second sieve plate and extrudes the gas spring, when the higher end of the second sieve plate is overturned to the lower end, the concrete fragments on the top surface can roll, when the hydraulic cylinder retracts, the concrete block fragments roll again under the action of the reset of the air spring, so that the second sieve plate can dynamically and repeatedly turn over when the concrete block repeatedly strikes the trapezoidal barrier plate to complete the crushing process, the concrete block fragments falling on the second sieve plate can achieve a better screening effect, and the size of the screened concrete block fragments meets the requirement.
As a further scheme of the invention, an arc-shaped part is turned on the top of the gas spring, and the diameter of the arc-shaped part is smaller than that of the sieve pore of the second sieve plate; the during operation, the second sieve can carry out the reciprocal stirring of developments, can strengthen its screening effect, but some little fragments of card in the second sieve still are difficult to reject, there is arc portion through turning at air spring top, when the second sieve can carry out the reciprocal stirring of developments, the air spring can be with the anti relative displacement of second sieve, so when the arc portion at air spring top when anti relative displacement of second sieve, a plurality of sieve meshes on the second sieve need be crossed to arc portion, arc portion all can be once strikeed with the second sieve when crossing a sieve mesh at every turn, the striking of arc portion and second sieve can make those little fragments of card in the second sieve break away from in the sieve mesh and fall, second screening sieve effect has further been strengthened, the concrete piece fragment size that makes the screening meet the requirements more.
As a further scheme of the invention, a material collecting groove is inserted in the second discharge port; during operation, the concrete blocks screened from the second sieve plate fall into the material collecting tank and cannot splash to various positions, so that collection is facilitated.
As a further scheme of the invention, the top of the feeding port is provided with a sealing top cover; the during operation, the concrete piece can produce a large amount of dust when the striking is broken, causes the injury to operating personnel's health, lives the dog-house with sealed top cap seal, can prevent that the dust of concrete piece when the striking is broken from volatilizing outside the equipment.
As a further scheme of the invention, guide surfaces are arranged at the top of the T-shaped scraping plate and at two sides of the square scraping plate; when the T-shaped scraping plate and the square scraping plate scrape the left powder, the powder can be possibly left on the top of the T-shaped scraping plate and two sides of the square scraping plate, and the powder scraped by the T-shaped scraping plate and the square scraping plate can be guided away by arranging the guide surfaces on the top of the T-shaped scraping plate and two sides of the square scraping plate, so that the powder is prevented from staying on the top of the T-shaped scraping plate and two sides of the square scraping plate, and the normal use of the T-shaped scraping plate and the square scraping plate is influenced.
Compared with the prior art, the invention has the beneficial effects that:
1. when the invention is used for manufacturing concrete block broken stone raw materials required by recycled concrete, the pushing plate can continuously push the concrete block to impact the trapezoid blocking plate by utilizing the regular reciprocating pushing action of the pushing plate until the crushing degree of the concrete block meets the requirement, in addition, compared with the mode of crushing the concrete block by matching the crushing roller and the plate hammer, the mode of crushing the concrete block does not have the problem that part of the concrete block cannot be crushed, in addition, when the pushing plate moves to the initial position, the T-shaped scraping plate can scrape and clean the surface of the trapezoid blocking plate once in the process of recovering the initial position, powder left after the impact of the concrete block stuck on the surface of the trapezoid blocking plate is eliminated, the invention solves the problems that the powder left after impact is easily stuck on the inner wall of a frame body and gradually accumulated when the plate hammer is driven by the rotation of the crushing roller to stir the plate hammer to impact the inner wall of the frame body, the problem that the concrete blocks cannot achieve the ideal crushing effect when being crushed and impacted can be caused.
2. According to the invention, the long through groove, the lead screw, the grinding wheel, the moving block and the square scraping plate are arranged on the T-shaped scraping plate, when the T-shaped scraping plate moves, the grinding wheel and the front surface of the trapezoidal blocking plate act to rotate, the grinding wheel rotates to drive the lead screw to rotate, the lead screw rotates to drive the square scraping plate to transversely move on the front surface of the T-shaped scraping plate by the moving block, and the square scraping plate transversely moves on the front surface of the T-shaped scraping plate to scrape and remove powder left after the residual concrete blocks on the surface of the square scraping plate collide, so that the crushing effect of the subsequent concrete blocks is ensured.
3. The invention arranges the mandril and the gas spring, and connects the second sieve plate with the shell in a rotating way through the rotating shaft fixed at the middle part of the second sieve plate, so that the second sieve plate can rotate around the rotating shaft at the middle part of the second sieve plate and keep inclining under the action of the gas spring, when the hydraulic cylinder extends, the push rod is pressed downwards, so that the push rod acts on the higher end of the second sieve plate and extrudes the gas spring, when the higher end of the second sieve plate is turned over to the lower end, the concrete block fragments on the top surface of the second sieve plate roll, when the hydraulic cylinder retracts, the concrete block fragments roll again under the reset action of the gas spring, so that the second sieve plate can be used for crushing the concrete blocks after the concrete blocks repeatedly impact the trapezoidal barrier plate, the second sieve plate is dynamically and repeatedly turned, so that the concrete block fragments falling on the second sieve plate can achieve a better screening effect, and the size of the screened concrete block fragments meets the requirement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the process of the present invention;
FIG. 2 is a first perspective view of the crushing and screening apparatus of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a second perspective view of the crushing and screening apparatus of the present invention;
FIG. 5 is a front elevational view, partially in section, of a size reduction and screening apparatus of the present invention;
FIG. 6 is an enlarged view at C of FIG. 5;
FIG. 7 is a schematic front view of a T-shaped scraping plate of the crushing and screening apparatus of the present invention;
FIG. 8 is a schematic view of the back side of a T-shaped scraping plate in the crushing and screening apparatus of the present invention;
FIG. 9 is an enlarged view at B in FIG. 8;
figure 10 is a schematic diagram of the general construction of the comminution screening device of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a machine shell 1, a guide port 2, a feed port 3, a roller 4, a material pushing plate 5, a driving rod 6, a connecting plate 7, a push rod 8, a trapezoidal blocking plate 9, a guide groove 10, a T-shaped scraping plate 11, a first sieve plate 12, a second sieve plate 13, a straight rod 14, a hydraulic cylinder 15, a first discharge port 16, a sealing plate 17, a long through groove 18, a screw rod 19, a grinding wheel 20, a moving block 21, a square scraping plate 22, a push rod 23, an air spring 24, an arc-shaped part 25, a material collecting groove 26, a sealing top cover 27, a guide surface 28 and a second discharge port 29.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a production process of recycled concrete comprises the following specific steps:
the method comprises the following steps: washing the concrete blocks to be crushed, and then standing and air-drying the washed concrete blocks;
step two: throwing the cleaned and air-dried concrete blocks into a crushing and screening device, and starting the crushing and screening device after throwing a proper amount of the concrete blocks;
step three: after the crushing and screening equipment is started for a period of time, taking out concrete block crushed slag with proper size screened out from the crushing and screening equipment;
step four: replacing natural materials such as sand stones with the concrete block crushed slag taken out from the third step, adding cement, water and the like, and uniformly stirring to form the required recycled concrete;
the crushing and screening device comprises a casing 1, wherein two side surfaces of the casing 1 are respectively provided with a guide port 2, the two guide ports 2 are symmetrically arranged and are obliquely arranged, the top of the casing 1 is provided with a feed port 3, rollers 4 are respectively clamped in the two guide ports 2, a rotating shaft of each roller 4 is jointly and fixedly connected with a material pushing plate 5, a first sieve plate 12 parallel to the guide ports 2 is fixedly arranged below the material pushing plate 5, the material pushing plate 5 is vertically arranged with the first sieve plate 12, two sides of the front bottom of the material pushing plate 5 are respectively and fixedly connected with a connecting plate 7 vertical to the material pushing plate, the top end of each connecting plate 7 is hinged with an obliquely arranged push rod 8, the right side of each push rod 8 is provided with a trapezoidal barrier plate 9 fixed on the inner wall of the casing 1, two sides of the trapezoidal barrier plates 9 far away from the inner wall of the casing 1 are respectively provided with a guide groove 10 for limiting the movement of the push rod 8, the two guide grooves 10 are assembled with a T-shaped scraping plate 11 in a sliding mode together, a support arm of the T-shaped scraping plate 11 is located above the push rod 8, the back face of the material pushing plate 5 is connected with a power mechanism, a first material outlet 16 is formed in the middle of the machine shell 1, a sealing plate 17 is hermetically clamped on the first material outlet 16, a second sieve plate 13 which is in sealing butt joint with the inner wall of the machine shell 1 and is obliquely arranged is arranged below the sealing plate 17, and a second material outlet 29 is formed in the bottom of the machine shell 1;
when the process is used for producing recycled concrete, firstly, the first step is carried out, the concrete block to be crushed is washed clean, then the washed concrete block is kept stand and dried in air, so that clay dirt stuck on the surface of the concrete block to be crushed is cleaned, the crushed slag of the concrete block to be crushed is not doped with impurities as much as possible, the quality of the recycled concrete produced in the later period is better, then, the operation in the second step is carried out, the concrete block washed, kept stand and dried in the first step is thrown into crushing and screening equipment, when the concrete block is washed, kept stand and dried in the air and then crushed, the generated fragments cannot be mixed with water remained on the surface of the concrete block to form thick slurry, on one hand, the normal use of the equipment is influenced, on the other hand, the thick slurry cannot be adhered to the crushed concrete block to influence the quality of the crushed concrete block, and the quality of the recycled concrete produced in the later period is further improved, after the crushing and screening equipment in the second step puts in a proper amount of concrete blocks which are washed, kept stand and dried, a power mechanism is started, the power mechanism is matched with the rollers 4 and the guide ports 2 to lead the material pushing plate 5 to do regular reciprocating motion along the top of the first screen plate 12, when the material pushing plate 5 moves towards the direction of the trapezoid blocking plate 9, the connecting plate 7 moves along the same direction of the material pushing plate 5, the connecting plate 7 can extrude the push rod 8 when moving towards the direction of the trapezoid blocking plate 9, meanwhile, under the blocking action of the guide grooves 10, the top end of the push rod 8 moves upwards along the guide grooves 10 and extrudes the T-shaped scraping plate 11, the T-shaped scraping plate 11 also moves upwards along the guide grooves 10, when the material pushing plate 5 moves towards the direction of the trapezoid blocking plate 9 to the maximum position, the top of the T-shaped scraping plate 11 just contacts the inner wall of the top of the casing 1, at the moment, due to inertia effect, the concrete blocks in the casing 1 can collide with the trapezoid blocking plate 9, the concrete blocks are crushed, when the material pushing plate 5 moves to the initial position, the crushed concrete blocks roll to the initial position along the inclined first sieve plate 12 under the action of the dead weight, the concrete blocks with proper size and smaller size can pass through the first sieve plate 12 and fall into the space between the first sieve plate 12 and the second sieve plate 13 in the rolling process, the concrete blocks with smaller size can pass through the second sieve plate 13 and fall to the bottom of the casing 1, and can be discharged and collected by the second discharge hole 29, the concrete blocks with proper size (namely the concrete blocks required for producing recycled concrete) can be left at the top of the second sieve plate 13, after the sealing plate 17 is opened, the concrete blocks can be directly obtained from the first discharge hole 16, when the material pushing plate 5 moves to the initial position, the pushing rod 8 cancels the jacking action on the T-shaped scraping plate 11, the T-shaped scraping plate 11 can restore to the initial state under the action of the dead weight, and the surface of the trapezoidal blocking plate 9 can be scraped and cleaned once by the T-shaped scraping plate 11 in the process of restoring to the initial position, powder left after the impact of the concrete blocks adhered to the surface of the trapezoidal barrier plate 9 is removed, so that each impact of the concrete blocks has a good crushing effect, through the crushing and screening equipment, when concrete block crushed stone raw materials required by recycled concrete are manufactured, the pushing plate 5 can continuously push the concrete blocks to impact the trapezoidal barrier plate 9 by utilizing the regular reciprocating pushing action of the pushing plate 5 until the crushing degree of the concrete blocks meets the requirement, in addition, compared with the mode of crushing the concrete blocks by matching the crushing roller and the plate hammer, the mode of crushing the concrete blocks does not have the problem that part of the concrete blocks cannot be crushed, in addition, when the pushing plate 5 moves to the initial position, the T-shaped scraping plate 11 can scrape and clean the surface of the trapezoidal barrier plate 9 once in the process of recovering the initial position, and the powder left after the impact of the concrete blocks adhered to the surface of the trapezoidal barrier plate 9 is removed, the problem of among the prior art when the crushing roller rotates to drive the board hammer and stir concrete piece and support body inner wall striking, lead to gluing the powder that the striking was left over on the support body inner wall easily, the powder accumulates gradually and piles up, can lead to the concrete piece can't reach the crushing effect of ideal when broken striking, finally will replace natural material such as grit with the concrete piece disintegrating slag of taking out, add the required recycled concrete of stirring mixing formation such as cement, water again.
As a further scheme of the invention, the power mechanism comprises a driving rod 6 hinged with the back of the material pushing plate 5, the driving rod 6 is obliquely arranged, one end of the driving rod 6, which is far away from the material pushing plate 5, is fixedly connected with a straight rod 14, a hydraulic cylinder 15 of which the output shaft is rotationally connected with the straight rod 14 is arranged above the straight rod 14, and the hydraulic cylinder 15 is fixedly connected with the top of the shell 1; during operation, hydraulic cylinder 15 extension can promote straight-bar 14 and move down along hydraulic cylinder 15 extension direction, and straight-bar 14 moves down and can promote the top of actuating lever 6 and move down, and the other end of actuating lever 6 can be followed its and 5 pin joint upsets of scraping wings to actuating lever 6 can promote scraping wings 5 and move toward trapezoidal barrier plate 9 department, on the contrary, when hydraulic cylinder 15 contracts, straight-bar 14, actuating lever 6 and scraping wings 5 all resume to initial position.
As a further scheme of the invention, a long through groove 18 is formed in the middle of the T-shaped scraping plate 11, a lead screw 19 is rotatably assembled in the middle of the long through groove 18, both ends of the lead screw 19 are fixedly connected with a grinding wheel 20 which is in contact with the front surface of the trapezoidal barrier plate 9, a moving block 21 clamped in the long through groove 18 is in threaded connection with the lead screw 19, and one end of the moving block 21 is fixedly connected with a square scraping plate 22 for scraping the front surface of the T-shaped scraping plate 11; when the T-shaped scraping plate 11 moves to the maximum position in the direction of the trapezoid blocking plate 9, the top of the T-shaped scraping plate 11 just contacts the inner wall of the top of the machine shell 1, at the moment, due to the inertia effect, concrete blocks in the machine shell 1 can collide with the trapezoid blocking plate 9, because the top of the T-shaped scraping plate 11 just contacts the inner wall of the top of the machine shell 1 at the moment, the T-shaped scraping plate 11 can shield part of the trapezoid blocking plate 9, part of the concrete blocks can collide with the front face of the T-shaped scraping plate 11, powder left after the concrete blocks collide can be adhered on the front face of the T-shaped scraping plate 11, the crushing effect of the subsequent concrete blocks can be influenced if the powder is not cleaned, and the long through groove 18, the lead screw 19, the grinding wheel 20, the moving block 21 and the square scraping plate 22 are arranged on the T-shaped scraping plate 11, when the T-shaped scraping plate 11 moves, the grinding wheel 20 and the front face of the trapezoid blocking plate 9 act and rotate, the grinding wheel 20 rotates to drive the screw rod 19 to rotate, the screw rod 19 rotates to enable the moving block 21 to drive the square scraping plate 22 to transversely move on the front face of the T-shaped scraping plate 11, the square scraping plate 22 transversely moves on the front face of the T-shaped scraping plate 11 to scrape and remove powder left after the residual concrete blocks on the surface of the square scraping plate collide, and the subsequent crushing effect of the concrete blocks is guaranteed.
As a further scheme of the invention, the top end of the output shaft of the hydraulic cylinder 15 is also rotatably connected with a mandril 23, the mandril 23 penetrates through the first sieve plate 12 and is in sliding connection with the first sieve plate 12, the part of the casing 1, which is positioned below the first sieve plate 12, is arranged into an arc shape, the second sieve plate 13 is rotatably connected with the casing 1 through a rotating shaft fixed in the middle of the second sieve plate 13, and a gas spring 24 for keeping the second sieve plate at an initial position is arranged below the second sieve plate 13; when the second screen plate 13 is obliquely and statically placed, part of small fragments falling from the first screen plate 12 can be mutually extruded and clamped in the screen holes of the second screen plate 13, on one hand, the generation of hole blockage can be caused, on the other hand, the small concrete fragments removed from the top surface of the second screen plate 13 also contain a large amount of small undesirable concrete fragment with small volume, so that the subsequent produced recycled concrete is undesirable, through arranging the ejector rods 23 and the gas springs 24 and rotationally connecting the second screen plate 13 with the machine shell 1 through the rotating shaft fixed at the middle part of the second screen plate 13, the second screen plate 13 can rotate around the rotating shaft at the middle part of the second screen plate and keep inclining under the action of the gas springs 24, when the hydraulic cylinder 15 extends, the ejector rods 23 can be pressed down, so that the ejector rods 23 act on the higher end of the second screen plate 13 and extrude the gas springs 24, and when the higher end of the second screen plate 13 is overturned to the lower end, the concrete piece fragment on its top surface can take place to roll, when hydraulic cylinder 15 withdraws, divide the reset action under air spring 24, the concrete piece fragment can take place to roll once more, make second sieve 13 at the concrete piece in the trapezoidal barrier plate 9 of striking repeatedly and accomplish broken in-process, second sieve 13 carries out the reciprocal stirring of developments, the concrete piece fragment that makes on falling second sieve 13 can reach better screening effect, the concrete piece fragment size of guaranteeing to sieve out meets the requirements.
As a further proposal of the invention, the top of the gas spring 24 is turned with an arc part 25, the diameter of the arc part 25 is smaller than that of the sieve pore of the second sieve plate 13; during operation, second sieve 13 can carry out the reciprocal stirring of developments, can strengthen its screening effect, but some little fragments of card in second sieve 13 still are difficult to reject, there is arc portion 25 through turning at air spring 24 top, when second sieve 13 can carry out the reciprocal stirring of developments, air spring 24 can reflect relative displacement with second sieve 13, so when arc portion 25 at air spring 24 top is reflecting relative displacement with second sieve 13, arc portion 25 needs to cross a plurality of sieve meshes on second sieve 13, arc portion 25 all can reflect once striking with second sieve 13 when crossing a sieve mesh each time, the striking of arc portion 25 and second sieve 13 can make those little fragments of card in second sieve 13 break away from the sieve mesh and fall down, second sieve 13 screening effect has further been strengthened, the concrete piece fragment size that makes the screening meet the demands more.
As a further scheme of the invention, a material collecting groove 26 is inserted in the second material outlet 29; during operation, the concrete fragments screened from the second sieve plate 13 fall into the material collecting tank 26 and cannot splash to each position, so that collection is facilitated.
As a further development of the invention, the top of the feed opening 3 is fitted with a sealing cap 27; during operation, the concrete block can produce a large amount of dust when the striking is broken, causes the injury to operating personnel's health, live dog-house 3 with sealed top cap 27 is sealed, can prevent that the dust of concrete block when the striking is broken from volatilizing outside the equipment.
As a further proposal of the invention, the top of the T-shaped scraping plate 11 and both sides of the square scraping plate 22 are provided with guide surfaces 28; when the T-shaped scraping plate 11 and the square scraping plate 22 scrape off the left powder, the powder may be left on the top of the T-shaped scraping plate 11 and on two sides of the square scraping plate 22, and the guiding surfaces 28 are arranged on the top of the T-shaped scraping plate 11 and on two sides of the square scraping plate 22, so that the powder scraped by the T-shaped scraping plate 11 and the square scraping plate 22 can be guided away, and the powder is prevented from staying on the top of the T-shaped scraping plate 11 and on two sides of the square scraping plate 22, and the normal use of the T-shaped scraping plate 11 and the square scraping plate 22 is prevented from being influenced.
The working principle is as follows: when the process is used for producing recycled concrete, firstly, the first step is carried out, the concrete block to be crushed is washed clean, then the washed concrete block is kept stand and dried in air, so that clay dirt stuck on the surface of the concrete block to be crushed is cleaned, the crushed slag of the concrete block to be crushed is not doped with impurities as much as possible, the quality of the recycled concrete produced in the later period is better, then, the operation in the second step is carried out, the concrete block washed, kept stand and dried in the first step is thrown into crushing and screening equipment, when the concrete block is washed, kept stand and dried in the air and then crushed, the generated fragments cannot be mixed with water remained on the surface of the concrete block to form thick slurry, on one hand, the normal use of the equipment is influenced, on the other hand, the thick slurry cannot be adhered to the crushed concrete block to influence the quality of the crushed concrete block, and the quality of the recycled concrete produced in the later period is further improved, after the crushing and screening equipment in the second step puts in a proper amount of concrete blocks which are washed, kept stand and dried, a power mechanism is started, the power mechanism is matched with the rollers 4 and the guide ports 2 to lead the material pushing plate 5 to do regular reciprocating motion along the top of the first screen plate 12, when the material pushing plate 5 moves towards the direction of the trapezoid blocking plate 9, the connecting plate 7 moves along the same direction of the material pushing plate 5, the connecting plate 7 can extrude the push rod 8 when moving towards the direction of the trapezoid blocking plate 9, meanwhile, under the blocking action of the guide grooves 10, the top end of the push rod 8 moves upwards along the guide grooves 10 and extrudes the T-shaped scraping plate 11, the T-shaped scraping plate 11 also moves upwards along the guide grooves 10, when the material pushing plate 5 moves towards the direction of the trapezoid blocking plate 9 to the maximum position, the top of the T-shaped scraping plate 11 just contacts the inner wall of the top of the casing 1, at the moment, due to inertia effect, the concrete blocks in the casing 1 can collide with the trapezoid blocking plate 9, the concrete blocks are crushed, when the material pushing plate 5 moves to the initial position, the crushed concrete blocks roll to the initial position along the inclined first sieve plate 12 under the action of the dead weight, the concrete blocks with proper size and smaller size can pass through the first sieve plate 12 and fall into the space between the first sieve plate 12 and the second sieve plate 13 in the rolling process, the concrete blocks with smaller size can pass through the second sieve plate 13 and fall to the bottom of the casing 1, and can be discharged and collected by the second discharge hole 29, the concrete blocks with proper size (namely the concrete blocks required for producing recycled concrete) can be left at the top of the second sieve plate 13, after the sealing plate 17 is opened, the concrete blocks can be directly obtained from the first discharge hole 16, when the material pushing plate 5 moves to the initial position, the pushing rod 8 cancels the jacking action on the T-shaped scraping plate 11, the T-shaped scraping plate 11 can restore to the initial state under the action of the dead weight, and the surface of the trapezoidal blocking plate 9 can be scraped and cleaned once by the T-shaped scraping plate 11 in the process of restoring to the initial position, powder left after the impact of the concrete blocks adhered to the surface of the trapezoidal barrier plate 9 is removed, so that each impact of the concrete blocks has a good crushing effect, through the crushing and screening equipment, when concrete block crushed stone raw materials required by recycled concrete are manufactured, the pushing plate 5 can continuously push the concrete blocks to impact the trapezoidal barrier plate 9 by utilizing the regular reciprocating pushing action of the pushing plate 5 until the crushing degree of the concrete blocks meets the requirement, in addition, compared with the mode of crushing the concrete blocks by matching the crushing roller and the plate hammer, the mode of crushing the concrete blocks does not have the problem that part of the concrete blocks cannot be crushed, in addition, when the pushing plate 5 moves to the initial position, the T-shaped scraping plate 11 can scrape and clean the surface of the trapezoidal barrier plate 9 once in the process of recovering the initial position, and the powder left after the impact of the concrete blocks adhered to the surface of the trapezoidal barrier plate 9 is removed, the problem of among the prior art when the crushing roller rotates to drive the board hammer and stir concrete piece and support body inner wall striking, lead to gluing the powder that the striking was left over on the support body inner wall easily, the powder accumulates gradually and piles up, can lead to the concrete piece can't reach the crushing effect of ideal when broken striking, finally will replace natural material such as grit with the concrete piece disintegrating slag of taking out, add the required recycled concrete of stirring mixing formation such as cement, water again.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A production process of recycled concrete is characterized by comprising the following steps: the process comprises the following specific steps:
the method comprises the following steps: washing the concrete blocks to be crushed, and then standing and air-drying the washed concrete blocks;
step two: throwing the cleaned and air-dried concrete blocks into a crushing and screening device, and starting the crushing and screening device after throwing a proper amount of the concrete blocks;
step three: after the crushing and screening equipment is started for a period of time, taking out concrete block crushed slag with proper size screened out from the crushing and screening equipment;
step four: replacing natural materials such as sand stones with the concrete block crushed slag taken out from the third step, adding cement, water and the like, and uniformly stirring to form the required recycled concrete;
the crushing and screening equipment in the second step and the third step comprises a casing (1), wherein two guide ports (2) are formed in two side faces of the casing (1), the two guide ports (2) are symmetrically arranged and are obliquely arranged, a feed port (3) is formed in the top of the casing (1), rollers (4) are clamped in the two guide ports (2), a pushing plate (5) is fixedly connected to a rotating shaft of the two rollers (4) together, a first sieve plate (12) parallel to the guide ports (2) is fixedly arranged below the pushing plate (5), the pushing plate (5) is vertically arranged with the first sieve plate (12), connecting plates (7) vertical to the pushing plate (5) are fixedly connected to two sides of the front bottom of the pushing plate (5), a push rod (8) obliquely arranged is hinged to the top end of each connecting plate (7), and a trapezoidal blocking plate (9) fixed on the inner wall of the casing (1) is arranged on the right side of each push rod (8), guide groove (10), two that are used for spacing push rod (8) to remove are all offered to the side both sides that casing (1) inner wall was kept away from in trapezoidal barrier plate (9) guide groove (10) slide jointly and are equipped with T type scraping plate (11), the support arm of T type scraping plate (11) is located push rod (8) top, scraping wings (5) back connection has power unit, casing (1) middle part is equipped with first discharge gate (16), sealed joint has closing plate (17) on first discharge gate (16), closing plate (17) below is equipped with second sieve (13) that set up with casing (1) inner wall sealing butt joint and slope, second discharge gate (29) have been seted up to casing (1) bottom.
2. A recycled concrete production process according to claim 1, characterized in that: the power mechanism comprises a driving rod (6) hinged to the back face of the material pushing plate (5), the driving rod (6) is obliquely arranged, one end, far away from the material pushing plate (5), of the driving rod (6) is fixedly connected with a straight rod (14), a hydraulic cylinder (15) is arranged above the straight rod (14), an output shaft of the hydraulic cylinder is rotatably connected with the straight rod, and the hydraulic cylinder (15) is fixedly connected to the top of the machine shell (1).
3. A recycled concrete production process according to claim 2, characterized in that: rectangular logical groove (18) have been seted up at T type scraping board (11) middle part, rectangular logical groove (18) middle part is rotated and is equipped with lead screw (19), grinding wheel (20) of the equal fixedly connected with in lead screw (19) both ends and trapezoidal barrier plate (9) front contact, and threaded connection has movable block (21) that clamps in rectangular logical groove (18) on lead screw (19), movable block (21) one end fixedly connected with is used for scraping the positive square scraping board (22) of T type scraping board (11).
4. A recycled concrete production process according to claim 3, characterized in that: hydraulic cylinder (15) output shaft top is still rotated and is connected with ejector pin (23), ejector pin (23) run through first sieve (12) and rather than sliding connection, casing (1) are located first sieve (12) below part and set up to the arc, second sieve (13) are connected with casing (1) rotation through its middle part fixed pivot, second sieve (13) below is equipped with and is used for keeping its air spring (24) that are in initial position.
5. A recycled concrete production process according to claim 4, characterized in that: the top of the gas spring (24) is turned with an arc-shaped part (25), and the diameter of the arc-shaped part (25) is smaller than that of the sieve pores of the second sieve plate (13).
6. A recycled concrete production process according to claim 1, characterized in that: a material collecting groove (26) is inserted in the second material outlet (29).
7. A recycled concrete production process according to claim 1, characterized in that: the top of the feeding port (3) is provided with a sealing top cover (27).
8. A recycled concrete production process according to claim 3, characterized in that: guide surfaces (28) are arranged on the top of the T-shaped scraping plate (11) and two sides of the square scraping plate (22).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733750A (en) * | 2022-03-08 | 2022-07-12 | 曹伟生 | Full-automatic coal mine washing treatment equipment |
| CN115532393A (en) * | 2022-08-18 | 2022-12-30 | 朱堃 | Organic solid waste treatment equipment with high anti-pollution treatment efficiency |
| CN117656341A (en) * | 2024-02-01 | 2024-03-08 | 安徽瑞邦橡塑助剂集团有限公司 | Equipment for producing sealing strips by mixing waste rubber |
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| CN206519234U (en) * | 2017-02-07 | 2017-09-26 | 王向国 | A kind of mine coal pulverizer |
| CN109109158A (en) * | 2018-09-06 | 2019-01-01 | 福建坪方数建筑材料有限公司 | A kind of recycled aggregate prepares the process units and its production technology of premixing dry-mixed mortar |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206519234U (en) * | 2017-02-07 | 2017-09-26 | 王向国 | A kind of mine coal pulverizer |
| CN109109158A (en) * | 2018-09-06 | 2019-01-01 | 福建坪方数建筑材料有限公司 | A kind of recycled aggregate prepares the process units and its production technology of premixing dry-mixed mortar |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733750A (en) * | 2022-03-08 | 2022-07-12 | 曹伟生 | Full-automatic coal mine washing treatment equipment |
| CN115532393A (en) * | 2022-08-18 | 2022-12-30 | 朱堃 | Organic solid waste treatment equipment with high anti-pollution treatment efficiency |
| CN117656341A (en) * | 2024-02-01 | 2024-03-08 | 安徽瑞邦橡塑助剂集团有限公司 | Equipment for producing sealing strips by mixing waste rubber |
| CN117656341B (en) * | 2024-02-01 | 2024-04-12 | 安徽瑞邦橡塑助剂集团有限公司 | Equipment for producing sealing strips by mixing waste rubber |
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Effective date of registration: 20221214 Address after: 765 Linquan West Road, Midong District, Urumqi, Xinjiang Uygur Autonomous Region Applicant after: XINJIANG GUO TONG PIPELINE Co.,Ltd. Address before: 516820 No. 31, 35, calcium carbonate plant, Jianshe Road, Pingling neighborhood committee, Pingling Town, Longmen County, Huizhou City, Guangdong Province Applicant before: Wu Ziyi |
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