CN115231861B - Method for preparing recycled aggregate concrete by using construction waste - Google Patents
Method for preparing recycled aggregate concrete by using construction waste Download PDFInfo
- Publication number
- CN115231861B CN115231861B CN202210811378.4A CN202210811378A CN115231861B CN 115231861 B CN115231861 B CN 115231861B CN 202210811378 A CN202210811378 A CN 202210811378A CN 115231861 B CN115231861 B CN 115231861B
- Authority
- CN
- China
- Prior art keywords
- water
- screening
- screening roller
- roller
- construction waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000004567 concrete Substances 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims description 46
- 238000012216 screening Methods 0.000 claims abstract description 139
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000005406 washing Methods 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims abstract description 5
- 239000006004 Quartz sand Substances 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 33
- 238000007790 scraping Methods 0.000 claims description 25
- 239000012535 impurity Substances 0.000 claims description 17
- 230000001502 supplementing effect Effects 0.000 claims description 16
- 238000007873 sieving Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 17
- 230000003749 cleanliness Effects 0.000 abstract description 7
- 239000004566 building material Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 20
- 238000007599 discharging Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of concrete for building materials, in particular to a method for preparing recycled aggregate concrete by using building wastes, which comprises the following steps of S1, sorting the building wastes; s2, putting the rest building rubbish after sorting into a crusher for crushing and screening, putting the crushed mixture into water washing equipment through a closed pipeline for water washing and screening; s3, collecting and collecting the aggregates formed by screening in the S2, washing again, and drying in the shade to form recycled aggregates; mixing and stirring the prepared recycled aggregate, a water reducing agent, broken stone, cement, water, quartz sand and powder, and obtaining the recycled aggregate concrete; the washing equipment comprises a body and a screening roller; through throwing the broken building rubbish mixture into washing equipment, the powder in the mixture forms mud and flows out after mixing with water, reduces the raise dust pollution in the screening process, and the large granule solid aggregate in the mixture is sieved and washd, increases the screening efficiency and the cleanliness factor of aggregate.
Description
Technical Field
The invention belongs to the technical field of concrete for building materials, and particularly relates to a method for preparing recycled aggregate concrete by using building waste.
Background
The urban construction is updated with a large amount of removal, and a large amount of construction waste is formed in the removal process. The construction waste not only pollutes the environment, but also occupies a large amount of limited land, and the treatment of the construction waste is a huge project, the concrete is used as the construction material with the largest usage amount, the demand on resources is great, and the coarse aggregate used as the concrete raw material seriously damages the ecological environment due to the need of mining mountain in a large amount.
In the prior art, some technical schemes related to concrete for building materials also appear, for example, a Chinese patent with application number 2015108433138 discloses a C30 durable recycled plastic aggregate concrete prepared from building rubbish and a preparation method thereof, wherein the recycled plastic aggregate concrete is prepared by mixing cement, fly ash, mineral powder, fine aggregate, coarse aggregate, an additive and water according to a certain proportion, the fine aggregate is sand and recycled plastic fine aggregate, the recycled plastic fine aggregate accounts for 20-100% of the total weight of the fine aggregate, the coarse aggregate is crushed stone and recycled plastic coarse aggregate, and the recycled plastic coarse aggregate accounts for 20-100% of the total weight of the coarse aggregate. And crushing the construction waste and shaping the particles to obtain the recycled and shaped aggregate.
However, in the prior art, building waste is crushed and then is screened through a trough, and screening equipment usually works in an open-air environment, so that dust pollution is serious in the screening process, and meanwhile, dust cannot be effectively recycled, so that the recovery rate of the effective components of the building waste is reduced.
To this end, the present invention provides a method for preparing recycled aggregate concrete using construction waste.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for preparing recycled aggregate concrete by using construction waste, which solves the problems that the construction waste is crushed and then is required to be screened through a trough, screening equipment usually works in an open air environment, dust pollution is serious in the screening process, and meanwhile, the dust cannot be effectively recycled, so that the recovery rate of the effective components of the construction waste is reduced.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a method for preparing recycled aggregate concrete by using construction waste, which comprises the following steps:
s1, sorting the construction waste, removing large-scale wood and plastic impurities contained in the construction waste, and adsorbing large-scale exposed steel bars and iron impurities in the construction waste by a lifting device in combination with an electromagnet;
s2, putting the rest building rubbish after sorting into a crusher for crushing, putting the crushed mixture into water washing equipment through a closed pipeline, carrying out dust-free cleaning on powder with smaller particle diameters contained in the building rubbish through a screening roller of the water washing equipment, dissolving the powder into water to form slurry, and simultaneously driving grinding balls to crush and filter the large building rubbish particles again through the rotating screening roller so as to screen the building rubbish;
s3, drying the slurry formed in the S2 after water is removed by a plate-and-frame filter press to obtain powder, recharging filtered water into washing equipment through a water inlet pipe, recycling, collecting and washing the aggregate formed by screening in the S2 again, removing sludge impurities adhered to the surface of the aggregate, and drying the aggregate in the shade to form recycled aggregate; and mixing and stirring the prepared recycled aggregate, the water reducer, the broken stone, the cement, the water, the quartz sand and the powder, and obtaining the recycled aggregate concrete.
Preferably, the washing apparatus comprises a body and a screening drum; the top of the body is provided with a feed hopper, the screening roller is rotatably arranged in the body, and the screening roller is driven to rotate by a speed reducing motor; one side of the opening of the screening roller is communicated with the feed hopper, and the other end of the screening roller is provided with a discharge hole; a discharge pipe is communicated with the bottom of the body at a position corresponding to the discharge hole; the two sides of the body are respectively communicated with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a water tank through a water pump, and the water outlet pipe is connected with a wastewater tank through a pipeline; the water inlet pipe and the water outlet pipe are respectively positioned at the upper side and the lower side of the screening roller, and the height of the water inlet pipe is lower than that of the water outlet pipe; when the method is used, the construction waste is crushed and then is screened through the trough, the screening equipment usually works in an open air environment, dust pollution is serious in the screening process, meanwhile, dust cannot be effectively recycled, so that the recovery rate of the effective components of the construction waste is reduced.
Preferably, the screening roller is obliquely arranged, and the height of one side of the screening roller close to the feed hopper is higher than that of the other end of the screening roller; the periphery of the screening roller is fixedly connected with a flow dividing ring, and one side of the flow dividing ring is uniformly provided with a group of first protrusions; a screen is arranged in the body at the bottom of the screening roller, and the screen is arranged in parallel with the axis of the screening roller; the bottom of the body is fixedly connected with a sliding seat, and the screen is positioned at the top of the sliding seat and is in sliding connection with the sliding seat; an electromagnetic valve is arranged in the discharge hole, a push rod is fixedly connected to the top of the screen mesh at a position corresponding to the flow distribution ring, the push rod is mutually overlapped with the flow distribution ring, and a second protrusion is fixedly connected to one side, close to the first protrusion, of the push rod; the bottom of the screen is fixedly connected with a supporting plate, and a spring is fixedly connected between the supporting plate and the sliding column; a fine material opening is formed in the body at the lower part of the screen; after screening through screening cylinder screening, a portion of aggregate is left in screening cylinder, another portion of aggregate falls on the screen cloth after screening cylinder screening, afterwards drive shunt ring and protruding rotation of a No. two protruding and ejector pin through screening cylinder, constantly push up and move, the cooperation spring makes the screen cloth constantly vibrate and carry out secondary screening, increase the screening efficiency of aggregate, the remaining aggregate is collected through arranging the material pipe on the screen cloth, after the aggregate is discharged completely on the screen cloth, open the solenoid valve, make the screening cylinder rotatory simultaneously and discharge, the thin aggregate that the cooperation fine material mouth was collected, increase the screening utilization efficiency of aggregate, shunt ring cuts apart the rivers that the inlet tube flowed in simultaneously, increase rivers carry mud and discharge body's efficiency, increase the suspension mixing efficiency of screen cloth and the interior aggregate of screening cylinder when the inlet tube pump rivers back upward flow of below simultaneously, further increase the dissolution discharge efficiency of dust, increase the cleanliness factor of aggregate.
Preferably, the bottom of the supporting plate is fixedly connected with an elastic scraping blade, and the thickness of one end of the scraping blade far away from the supporting plate is smaller than that of the other end of the scraping blade; one end of the scraping blade, which is far away from the supporting plate, is inclined towards the direction close to the fine material opening; the scraping blade is driven to continuously hang the local bottom when the screen mesh slides reciprocally, so that the discharging efficiency of the fine aggregate at the bottom of the body, which is close to the position of the sliding seat, is increased.
Preferably, a guide wheel is rotatably connected in a guide groove formed in the middle of the supporting plate, one side, far away from the scraping blade, of the bottom end of the supporting plate is rotatably connected with a roller through an elastic rod, and the roller is propped against the inner wall of the body and is in rolling connection with the inner wall of the body; a stay wire is wound on the roller, and the other end of the stay wire is fixedly connected with the end part of the scraping blade after bypassing the guide wheel; because the screen cloth is inclined state and constantly reciprocal slip for the extrusion doctor-bar of the gliding in-process of screen cloth, take the running roller rotatory and the rolling act as go-between through rolling friction between running roller and the body this moment, and then upwards pull up the doctor-bar, reduce the pressure between doctor-bar and the body bottom, and then reduce the wearing and tearing of doctor-bar, when cooperation screen cloth slides obliquely downwards, the cavity volume between backup pad and the slide reduces, increases the discharge efficiency of rivers to the fine aggregate of body bottom, and the screen cloth that is close to the slide position is recoil simultaneously, further reduces the jam of screen cloth.
Preferably, a fixed ring is sleeved on the periphery of the middle part of the screening roller, the fixed ring is connected with the body through a bracket, one side of the fixed ring is provided with a chute, an arch part is arranged at the position, close to the upper part, of the chute, and a sliding pin is connected in the chute in a sliding way; a group of overflow holes are circumferentially and uniformly distributed on the screening roller at the position corresponding to the fixed ring, a movable plate is arranged in the overflow holes, one end of the movable plate is hinged with the inner wall of the overflow hole through a rotary pin, and the other end of the movable plate is fixedly connected with the sliding pin through a supporting rod; when the sliding pin moves to the arch part, the movable plate rotates and opens the overflow hole; in the rotating process of the screening roller, when the sliding pin moves to the arched part, the movable plate rotates and opens the overflow hole, so that wood dust, foam and other plastic impurities which are insoluble in water and have the density smaller than that of water in the construction waste are discharged through the overflow hole, and the screening purity of aggregate is further increased.
Preferably, the bottom of one side, close to the feed hopper, of the screening roller is provided with an arc-shaped frame, and the screening roller is in sliding connection with the arc-shaped frame; the arc-shaped frame is fixedly connected with the body through a water supplementing pipe; the inner periphery of the arc-shaped frame is provided with an arc-shaped groove, and the bottom of the arc-shaped groove is communicated with the water supplementing pipe through a first hole; the water supplementing pipe penetrates through the body and extends to the outside of the body, and the water supplementing pipe is communicated with the water pool through the water pump; the arc-shaped frame is used for driving and supporting the screening roller, and meanwhile, when water is supplied to the arc-shaped groove through the water supplementing pipe, pressurized water is discharged through a gap between the arc-shaped frame and the screening roller, and the screening roller is slightly lifted upwards, so that the screening roller is suspended on the upper portion of the arc-shaped frame, and abrasion between the screening roller and the arc-shaped frame is further reduced.
Preferably, one side of the arc-shaped groove, which is close to the speed reducing motor, is communicated with a group of spray pipes, and water outlets of the spray pipes are correspondingly arranged with sieve holes of the sieving roller; the free end of the spray pipe is inclined to one side close to the speed reducing motor; a crescent stop block is hinged in the spray pipe through a tension spring, and the maximum width of the stop block is smaller than one half of the inner diameter of the spray pipe; partial water in the arc-shaped groove is sprayed out to the periphery of the screening roller through the spray pipe, so that high-speed water flows impact the sieve holes at corresponding positions, the blocking of the sieve holes is further reduced, the inclined water flows accelerate the movement efficiency of aggregates in the sieve barrel to the discharge hole, the stacking congestion of the aggregates in the screening roller is reduced, meanwhile, the water flows in the spray pipe drive the stop block to shake and continuously impact the sieve barrel, and the clearing efficiency of impurities blocked in the sieve holes in the sieve barrel is further increased.
Preferably, one side of the stop block far away from the tension spring is hinged with an impact ball through an elastic connecting rod, and one side of the impact ball close to the stop block is fixedly connected with a horn-shaped filter cover, wherein the diameter of the outer edge of the filter cover is smaller than the inner diameter of the spray pipe; the impurity entering and blocking spray tube are reduced through the horn-shaped filter mantle through the spray tube, and simultaneously when rivers drive the filter mantle and stretch out the outside of spray tube, the turbulent flow that the filter mantle formed is impacted to rivers further increases the swing range of collision ball, increases the striking clearance efficiency of collision ball to screening cylinder.
Preferably, a group of through holes are uniformly distributed at the position of the stop block close to the middle part, a coil spring is arranged at one side of the stop block close to the tension spring, and the end part of the coil spring penetrates through the through holes and is fixedly connected with the filter cover; the coil spring is pulled when the filter cover swings, so that the stop block is scraped when the coil spring is relaxed, accumulation of scale and sludge on the through hole and the stop block is reduced, swing efficiency of the stop block when water flow impacts the stop block is further increased, meanwhile, reset efficiency of the filter cover is increased by the coil spring, and probability that the filter cover is blocked outside the spray pipe and cannot be reset is reduced.
The beneficial effects of the invention are as follows:
1. according to the method for preparing recycled aggregate concrete by using the construction waste, the crushed construction waste mixture is put into the water washing equipment, the powder in the mixture is mixed with water to form slurry and flows out, the large-particle solid aggregate in the mixture is screened and washed, the screening efficiency and cleanliness of the aggregate are improved, meanwhile, the slurry in the water washing equipment is filtered by the filter pressing equipment to remove water and then dried in the shade to be used as concrete powder, the recycling rate of the construction waste is improved, dust pollution is reduced, and the recycling efficiency of the effective components of the construction waste is further improved.
2. According to the method for preparing recycled aggregate concrete by utilizing construction waste, after screening is carried out through the screening roller, a part of aggregate is left in the screening roller, the other part of aggregate falls on the screen after being screened through the screening roller, then the screening roller drives the diverter ring and the first protrusion to rotate, the second protrusion and the ejector rod are continuously pushed, the screen is enabled to continuously vibrate and carry out secondary screening through cooperation with the spring, the screening efficiency of the aggregate is improved, the aggregate left on the screen is collected through the discharge pipe, after the aggregate on the screen is completely discharged, the electromagnetic valve is opened, the screening roller is enabled to rotate and discharge the fine aggregate collected through the fine material hole, the screening utilization efficiency of the aggregate is improved, meanwhile, the diverter ring divides water flowing into the water inlet pipe, the efficiency of carrying mud by the water flow and discharging the body is improved, meanwhile, when the water inlet pipe located below pumps the water flow, the suspension mixing efficiency of the aggregate in the screen and the screening roller is increased, the dissolving and discharging efficiency of the dust is further improved, and the cleaning cleanliness of the aggregate is increased.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a cross-sectional view taken at B-B in FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 3 at C;
FIG. 7 is a perspective view of the arc bracket and spout of the present invention;
FIG. 8 is a schematic view of a block filter according to the present invention;
in the figure: the screening drum 11, the feed hopper 12, the gear motor 13, the discharge port 14, the discharge pipe 15, the water inlet pipe 16, the water outlet pipe 17, the diverting ring 18, the first protrusion 19, the screen 2, the slide seat 21, the ejector rod 22, the second protrusion 23, the support plate 24, the fine material port 25, the scraping blade 26, the guide wheel 27, the elastic rod 28, the roller wheel 29, the pull wire 3, the fixed ring 31, the sliding groove 32, the arched part 33, the sliding pin 34, the overflow hole 35, the movable plate 36, the supporting rod 37, the arc-shaped frame 4, the water supplementing pipe 41, the arc-shaped groove 42, the first hole 43, the spray pipe 44, the sieve mesh 47, the tension spring 45, the stop 46, the connecting rod 48, the collision ball 49, the filter cover 5, the through hole 51 and the coil spring 52.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1 to 7, the method for preparing recycled aggregate concrete using construction waste according to the present invention comprises the steps of:
s1, sorting the construction waste, removing large-scale wood and plastic impurities contained in the construction waste, and adsorbing large-scale exposed steel bars and iron impurities in the construction waste by a lifting device in combination with an electromagnet;
s2, putting the rest of the sorted construction waste into a crusher for crushing, putting the crushed mixture into water washing equipment through a closed pipeline, carrying out dust-free cleaning on powder with smaller particle diameters contained in the construction waste through a screening roller 11 of the water washing equipment, dissolving the powder into water to form slurry, and simultaneously driving a grinding ball to crush and filter the large-sized construction waste particles again through the rotating screening roller 11 so as to screen the construction waste;
s3, drying the slurry formed in the S2 after water removal through a plate-and-frame filter press to obtain powder, recharging filtered water into washing equipment through a water inlet pipe 16 for recycling, collecting and washing the aggregates formed by screening in the S2 again, removing sludge impurities adhered to the surfaces of the aggregates, and drying the aggregates in the shade to form recycled aggregates; and mixing and stirring the prepared recycled aggregate, the water reducer, the broken stone, the cement, the water, the quartz sand and the powder, and obtaining the recycled aggregate concrete.
The washing equipment comprises a body 1 and a screening drum 11; the top of the body 1 is provided with a feed hopper 12, the screening roller 11 is rotatably arranged in the body 1, and the screening roller 11 is driven to rotate by a gear motor 13; one side of the opening of the screening roller 11 is communicated with a feed hopper 12, and the other end of the screening roller 11 is provided with a discharge port 14; a discharge pipe 15 is communicated with the bottom of the body 1 at a position corresponding to the discharge hole 14; two sides of the body 1 are respectively communicated with a water inlet pipe 16 and a water outlet pipe 17, the water inlet pipe 16 is connected with a water tank through a water pump, and the water outlet pipe 17 is connected with a wastewater tank through a pipeline; the water inlet pipe 16 and the water outlet pipe 17 are respectively positioned at the upper side and the lower side of the screening roller 11, and the height of the water inlet pipe 16 is lower than that of the water outlet pipe 17; when the method is used, the construction waste is crushed and then is screened through the trough, the screening equipment usually works in an open air environment, dust pollution is serious in the screening process, meanwhile, dust cannot be effectively recycled, so that the recovery rate of the effective components of the construction waste is reduced.
The screening roller 11 is obliquely arranged, and the height of one side of the screening roller 11 close to the feed hopper 12 is higher than that of the other end; the periphery of the screening roller 11 is fixedly connected with a flow dividing ring 18, and one side of the flow dividing ring 18 is uniformly provided with a group of first protrusions 19; a screen 2 is arranged in the body 1 at the bottom of the screening roller 11, and the screen 2 is arranged in parallel with the axis of the screening roller 11; the bottom of the body 1 is fixedly connected with a sliding seat 21, and the screen 2 is positioned at the top of the sliding seat 21 and is in sliding connection with the sliding seat 21; an electromagnetic valve is arranged in the discharge hole 14, a push rod 22 is fixedly connected to the top of the screen 2 at a position corresponding to the shunt ring 18, the push rod 22 is mutually overlapped with the shunt ring 18, and a second protrusion 23 is fixedly connected to one side, close to the first protrusion 19, of the push rod 22; the bottom of the screen 2 is fixedly connected with a supporting plate 24, and a spring is fixedly connected between the supporting plate 24 and the sliding column; a fine material opening 25 is formed in the body 1 at the lower part of the screen 2; after screening through screening cylinder 11, a portion of aggregate is left in screening cylinder 11, another portion of aggregate falls on screen cloth 2 after screening cylinder 11 sieves, afterwards drive shunt ring 18 and a protruding 19 rotation through screening cylinder 11, constantly push up No. two protruding 23 and ejector pin 22, the cooperation spring makes screen cloth 2 constantly vibrate and carry out secondary screening, increase the screening efficiency of aggregate, the aggregate that remains on the screen cloth 2 is collected through row material pipe 15, after the aggregate is discharged completely on screen cloth 2, open the solenoid valve, make screening cylinder 11 rotatory simultaneously and discharge, the fine aggregate that cooperation fine aggregate mouth 25 was collected, increase the screening utilization efficiency of aggregate, the efficiency of mud is carried to the rivers that inlet tube 16 flowed in is cut apart to the water flow simultaneously, increase the efficiency of rivers carrying mud and discharge body 1, increase the suspension mixing efficiency of screen cloth 2 and the aggregate in the screening cylinder 11 when the inlet tube 16 pump water flow back that is located simultaneously upwards flows, further increase the dissolution discharge efficiency of dust, increase the washing cleanliness factor of aggregate.
The bottom of the supporting plate 24 is fixedly connected with an elastic scraping blade 26, and the thickness of one end of the scraping blade 26 far away from the supporting plate 24 is smaller than that of the other end; the end of the scraping blade 26 away from the supporting plate 24 is inclined towards the direction approaching the fine material opening 25; the scraping blade 26 is driven to continuously hang the local bottom when the screen 2 slides reciprocally, so that the discharging efficiency of fine aggregate at the bottom of the body 1, which is close to the sliding seat 21, is improved.
A guide wheel 27 is rotatably connected in a guide groove formed in the middle of the supporting plate 24, one side, far away from the scraping blade 26, of the bottom end of the supporting plate 24 is rotatably connected with a roller 29 through an elastic rod 28, and the roller 29 props against the inner wall of the body 1 and is in rolling connection with the inner wall of the body 1; the roller 29 is wound with a stay wire 3, and the other end of the stay wire 3 is fixedly connected with the end part of the scraping blade 26 after bypassing the guide wheel 27; because screen cloth 2 is incline state and constantly reciprocal slip for screen cloth 2 extrudees doctor-bar 26 in the slip down in-process, at this moment through the rolling friction between running roller 29 and the body 1 drive running roller 29 rotatory and rolling stay wire 3, and then upwards pull up doctor-bar 26, reduce the pressure between doctor-bar 26 and the body 1 bottom, and then reduce the wearing and tearing of doctor-bar 26, when cooperation screen cloth 2 slides down in the slant, the cavity volume between backup pad 24 and slide 21 reduces, increase the discharge efficiency of rivers to body 1 bottom fine aggregate, recoil is carried out to screen cloth 2 near the slide 21 position simultaneously, further reduce screen cloth 2's jam.
The middle periphery of the screening roller 11 is sleeved with a fixed ring 31, the fixed ring 31 is connected with the body 1 through a bracket, one side of the fixed ring 31 is provided with a chute 32, the chute 32 is provided with an arch part 33 near the upper part, and a sliding pin 34 is connected in the chute 32 in a sliding way; a group of overflow holes 35 are circumferentially and uniformly distributed on the screening roller 11 at positions corresponding to the fixed rings 31, a movable plate 36 is arranged in the overflow holes 35, one end of the movable plate 36 is hinged with the inner wall of the overflow holes 35 through a rotating pin, and the other end of the movable plate 36 is fixedly connected with the sliding pin 34 through a supporting rod 37; when the sliding pin 34 moves to the arch part 33, the movable plate 36 rotates and opens the overflow hole 35; during the rotation of the screening drum 11, when the sliding pin 34 moves to the arched portion 33, the movable plate 36 rotates and opens the overflow hole 35, so that the wood dust, foam and other plastic impurities which are insoluble in water and have a density less than that of water in the construction waste are discharged through the overflow hole 35, and the screening purity of the aggregate is further increased.
The bottom of one side, close to the feed hopper 12, of the screening roller 11 is provided with an arc-shaped frame 4, and the screening roller 11 is in sliding connection with the arc-shaped frame 4; the arc-shaped frame 4 is fixedly connected with the body 1 through a water supplementing pipe 41; an arc groove 42 is formed in the inner periphery of the arc frame 4, and the bottom of the arc groove 42 is communicated with the water supplementing pipe 41 through a first hole 43; the water supplementing pipe 41 penetrates through the body 1 and extends to the outside of the body 1, and the water supplementing pipe 41 is communicated with a water tank through a water pump; the arc-shaped frame 4 is used for driving and supporting the screening roller 11, and meanwhile, when water is supplied to the arc-shaped groove 42 through the water supplementing pipe 41, pressurized water is discharged through a gap between the arc-shaped frame 4 and the screening roller 11, and the screening roller 11 is slightly lifted upwards, so that the screening roller 11 is suspended on the upper portion of the arc-shaped frame 4, and abrasion between the screening roller 11 and the arc-shaped frame 4 is further reduced.
A group of spray pipes 44 are communicated with one side of the arc-shaped groove 42, which is close to the gear motor 13, and water outlets of the spray pipes 44 are correspondingly arranged with sieve holes 47 of the sieving roller 11; the free end of the spray pipe 44 is inclined to the side close to the gear motor 13; a crescent-shaped stop block 46 is hinged in the spray pipe 44 through a tension spring 45, and the maximum width of the stop block 46 is smaller than one half of the inner diameter of the spray pipe 44; part of water in the arc-shaped groove 42 is sprayed to the periphery of the screening roller 11 through the spray pipe 44, so that high-speed water flows impact the sieve holes 47 at corresponding positions, the blocking of the sieve holes 47 is further reduced, the inclined water flows accelerate the movement efficiency of aggregate in the screening roller 11 to the discharge hole 14, the accumulation and congestion of aggregate in the screening roller 11 are reduced, meanwhile, the water flows in the spray pipe 44 drive the stop block 46 to shake and continuously impact the screening roller 11, and the removal efficiency of impurities blocked in the sieve holes 47 in the screening roller 11 is further increased.
Example two
As shown in fig. 8, in comparative example one, another embodiment of the present invention is:
a collision ball 49 is hinged to one side of the stop block 46 far away from the tension spring 45 through an elastic connecting rod 48, a horn-shaped filter cover 5 is fixedly connected to one side of the collision ball 49 close to the stop block 46, and the outer edge diameter of the filter cover 5 is smaller than the inner diameter of the spray pipe 44; impurities are reduced to enter and block the spray pipe 44 through the horn-shaped filter cover 5 through the spray pipe 44, and meanwhile, when the water flow drives the filter cover 5 to extend out of the spray pipe 44, turbulence formed by the water flow impacting the filter cover 5 further increases the swing amplitude of the impact balls 49, so that the impact cleaning efficiency of the impact balls 49 on the screening drum 11 is increased.
A group of through holes 51 are uniformly distributed on the stop block 46 near the middle part, a coil spring 52 is arranged on one side of the stop block 46 near the tension spring 45, and the end part of the coil spring 52 penetrates through the through holes 51 and is fixedly connected with the filter cover 5; the coil spring 52 is pulled when the filter cover 5 swings, so that the coil spring 52 is used for scraping the stop 46 when being relaxed, accumulation of scale and sludge on the through hole 51 and the stop 46 is reduced, swing efficiency of the stop 46 when water flow impacts the stop 46 is further increased, and meanwhile, reset efficiency of the filter cover 5 is increased by the coil spring 52, and probability that the filter cover 5 is blocked outside the spray pipe 44 and cannot be reset is reduced.
When the method is used, the crushed building rubbish mixture is put into the water washing equipment, the powder in the mixture is mixed with water to form slurry and flows out, the large-particle solid aggregate in the mixture is screened and washed, the screening efficiency and cleanliness of the aggregate are improved, meanwhile, the slurry in the water washing equipment is dried in the shade as concrete powder after moisture is filtered out by the filter pressing equipment, the recycling rate of the building rubbish is improved, dust pollution is reduced, and the recycling efficiency of the effective components of the building rubbish is further improved; after sieving through the sieving roller 11, a part of aggregate is left in the sieving roller 11, another part of aggregate falls on the screen 2 after sieving through the sieving roller 11, then the sieving roller 11 drives the diverter ring 18 and the first protrusion 19 to rotate, the second protrusion 23 and the ejector rod 22 are continuously pushed up, the screen 2 is continuously vibrated and secondarily sieved by the cooperation of springs, the sieving efficiency of the aggregate is increased, the residual aggregate on the screen 2 is collected through the discharge pipe 15, after the aggregate on the screen 2 is completely discharged, the electromagnetic valve is opened, the sieving roller 11 is simultaneously enabled to rotate and discharge the fine aggregate collected by the fine aggregate opening 25, the sieving utilization efficiency of the aggregate is increased, meanwhile, the diverter ring 18 divides the water flowing into the water inlet pipe 16, the efficiency of carrying mud by the water flow and discharging the body 1 is increased, meanwhile, the suspension mixing efficiency of the aggregate in the screen 2 and the sieving roller 11 is increased when the water inlet pipe 16 positioned below pumps the water flow upwards, the dissolving and discharging efficiency of the dust is further increased, and the cleaning cleanliness of the aggregate is increased; the scraping blade 26 is driven to continuously hang the local bottom when the screen 2 slides reciprocally, so that the discharging efficiency of fine aggregate at the bottom of the body 1, which is close to the sliding seat 21, is improved; because the screen 2 is in an inclined state and continuously slides in a reciprocating manner, the scraping blade 26 is extruded in the downward sliding process of the screen 2, at the moment, the rolling friction between the rolling wheel 29 and the body 1 drives the rolling wheel 29 to rotate and wind the pull wire 3, so that the scraping blade 26 is pulled up upwards, the pressure between the scraping blade 26 and the bottom of the body 1 is reduced, the abrasion of the scraping blade 26 is reduced, when the screen 2 slides obliquely downwards in cooperation with the supporting plate 24, the cavity volume between the sliding seat 21 is reduced, the discharge efficiency of water flow on fine aggregate at the bottom of the body 1 is increased, and simultaneously, the screen 2 close to the sliding seat 21 is backflushed, so that the blockage of the screen 2 is further reduced; during the rotation process of the screening drum 11, when the sliding pin 34 moves to the arched part 33, the movable plate 36 rotates and opens the overflow hole 35, so that the sawdust, foam and other plastic impurities which are insoluble in water and have the density less than water in the construction waste are discharged through the overflow hole 35, and the screening purity of the aggregate is further increased; the arc-shaped frame 4 is additionally provided with a driving support for the screening roller 11, and meanwhile, when water is supplied to the arc-shaped groove 42 through the water supplementing pipe 41, pressurized water is discharged through a gap between the arc-shaped frame 4 and the screening roller 11, and the screening roller 11 is slightly lifted upwards, so that the screening roller 11 is suspended at the upper part of the arc-shaped frame 4, and the abrasion between the screening roller 11 and the arc-shaped frame 4 is further reduced; part of water in the arc-shaped groove 42 is sprayed to the periphery of the screening roller 11 through the spray pipe 44, so that high-speed water flows impact the sieve holes 47 at corresponding positions, the blocking of the sieve holes 47 is further reduced, the inclined water flows accelerate the movement efficiency of aggregate in the screening roller 11 to the discharge hole 14, the accumulation and congestion of aggregate in the screening roller 11 are reduced, meanwhile, the water flows in the spray pipe 44 drive the stop block 46 to shake and continuously impact the screening roller 11, and the removal efficiency of impurities blocked in the sieve holes 47 in the screening roller 11 is further increased.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A method for preparing recycled aggregate concrete by using construction waste is characterized by comprising the following steps: the method comprises the following steps:
s1, sorting the construction waste, removing large-scale wood and plastic impurities contained in the construction waste, and adsorbing large-scale exposed steel bars and iron impurities in the construction waste by a lifting device in combination with an electromagnet;
s2, putting the rest of the sorted construction waste into a crusher for crushing, putting the crushed mixture into water washing equipment through a closed pipeline, carrying out dust-free cleaning on powder with smaller particle diameters contained in the construction waste through a screening roller (11) of the water washing equipment, dissolving the powder into water to form slurry, and simultaneously driving a grinding ball to crush and filter the large-scale construction waste particles again through the rotating screening roller (11), so as to screen the construction waste;
s3, drying the slurry formed in the S2 after dewatering by a plate-and-frame filter press to obtain powder, recharging filtered water into washing equipment by a water inlet pipe (16) for recycling, collecting and washing the aggregates formed by screening in the S2 again to remove sludge impurities adhered to the surfaces of the aggregates, and drying the aggregates in the shade to form recycled aggregates; mixing and stirring the prepared recycled aggregate, a water reducing agent, broken stone, cement, water, quartz sand and powder, and obtaining the recycled aggregate concrete;
the bottom of one side, close to the feed hopper (12), of the screening roller (11) is provided with an arc-shaped frame (4), and the screening roller (11) is in sliding connection with the arc-shaped frame (4); the arc-shaped frame (4) is fixedly connected with the body (1) through a water supplementing pipe (41); an arc groove (42) is formed in the inner periphery of the arc frame (4), and the bottom of the arc groove (42) is communicated with the water supplementing pipe (41) through a first hole (43); the water supplementing pipe (41) penetrates through the body (1) and extends to the outside of the body (1), and the water supplementing pipe (41) is communicated with the water tank through the water pump;
one side of the arc-shaped groove (42) close to the gear motor (13) is communicated with a group of spray pipes (44), and water outlets of the spray pipes (44) are correspondingly arranged with sieve holes (47) of the sieving roller (11); the free end of the spray pipe (44) is inclined to one side close to the gear motor (13); a crescent-shaped stop block (46) is hinged in the spray pipe (44) through a tension spring (45), and the maximum width of the stop block (46) is smaller than one half of the inner diameter of the spray pipe (44);
one side of the stop block (46) far away from the tension spring (45) is hinged with a collision ball (49) through an elastic connecting rod (48), and one side of the collision ball (49) close to the stop block (46) is fixedly connected with a horn-shaped filter cover (5), wherein the diameter of the outer edge of the filter cover (5) is smaller than the inner diameter of the spray pipe (44);
a group of through holes (51) are uniformly distributed at the position, close to the middle part, of the stop block (46), a coil spring (52) is arranged at one side, close to the tension spring (45), of the stop block (46), and the end part of the coil spring (52) penetrates through the through holes (51) and is fixedly connected with the filter cover (5);
the washing equipment comprises a body (1) and a screening roller (11); a feed hopper (12) is arranged at the top of the body (1), the screening roller (11) is rotatably arranged inside the body (1), and the screening roller (11) is driven to rotate through a speed reducing motor (13); one side of the opening of the screening roller (11) is communicated with the feed hopper (12), and the other end of the screening roller (11) is provided with a discharge port (14); a discharge pipe (15) is communicated with the bottom of the body (1) at a position corresponding to the discharge hole (14); two sides of the body (1) are respectively communicated with a water inlet pipe (16) and a water outlet pipe (17), the water inlet pipe (16) is connected with a water tank through a water pump, and the water outlet pipe (17) is connected with a wastewater tank through a pipeline; the water inlet pipe (16) and the water outlet pipe (17) are respectively positioned at the upper side and the lower side of the screening roller (11), and the height of the water inlet pipe (16) is lower than that of the water outlet pipe (17);
the screening roller (11) is obliquely arranged, and the height of one side of the screening roller (11) close to the feed hopper (12) is higher than that of the other end; the periphery of the screening roller (11) is fixedly connected with a flow dividing ring (18), and a group of first protrusions (19) are uniformly distributed on one side of the flow dividing ring (18); a screen (2) is arranged in the body (1) at the bottom of the screening roller (11), and the screen (2) is arranged in parallel with the axis of the screening roller (11); the bottom of the body (1) is fixedly connected with a sliding seat (21), and the screen (2) is positioned at the top of the sliding seat (21) and is in sliding connection with the sliding seat (21); an electromagnetic valve is arranged in the discharge hole (14), a push rod (22) is fixedly connected to the top of the screen (2) at a position corresponding to the shunt ring (18), the push rod (22) is mutually overlapped with the shunt ring (18), and a second protrusion (23) is fixedly connected to one side, close to the first protrusion (19), of the push rod (22); a supporting plate (24) is fixedly connected to the bottom of the screen (2), and a spring is fixedly connected between the supporting plate (24) and the sliding column; a fine material opening (25) is formed in the body (1) at the lower part of the screen (2).
2. The method for preparing recycled aggregate concrete by using construction waste according to claim 1, wherein: the bottom of the supporting plate (24) is fixedly connected with an elastic scraping blade (26), and the thickness of one end, far away from the supporting plate (24), of the scraping blade (26) is smaller than that of the other end; one end of the scraping blade (26) away from the supporting plate (24) is inclined towards a direction approaching the fine material opening (25).
3. A method for preparing recycled aggregate concrete by using construction waste according to claim 2, wherein: a guide wheel (27) is rotatably connected in a guide groove formed in the middle of the supporting plate (24), one side, far away from the scraping blade (26), of the bottom end of the supporting plate (24) is rotatably connected with a roller wheel (29) through an elastic rod (28), and the roller wheel (29) props against the inner wall of the body (1) and is in rolling connection with the inner wall of the body (1); the roller (29) is wound with a stay wire (3), and the other end of the stay wire (3) is fixedly connected with the end part of the scraping blade (26) after bypassing the guide wheel (27).
4. The method for preparing recycled aggregate concrete by using construction waste according to claim 1, wherein: the middle periphery of the screening roller (11) is sleeved with a fixed ring (31), the fixed ring (31) is connected with the body (1) through a bracket, one side of the fixed ring (31) is provided with a sliding groove (32), an arch part (33) is arranged at the position, close to the upper part, of the sliding groove (32), and a sliding pin (34) is connected in the sliding groove (32) in a sliding way; a group of overflow holes (35) are circumferentially and uniformly distributed on the screening roller (11) at positions corresponding to the fixed rings (31), a movable plate (36) is arranged in each overflow hole (35), one end of each movable plate (36) is hinged with the inner wall of each overflow hole (35) through a rotary pin, and the other end of each movable plate is fixedly connected with a sliding pin (34) through a supporting rod (37); when the slide pin (34) moves to the arched portion (33), the movable plate (36) rotates and opens the overflow hole (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811378.4A CN115231861B (en) | 2022-07-11 | 2022-07-11 | Method for preparing recycled aggregate concrete by using construction waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811378.4A CN115231861B (en) | 2022-07-11 | 2022-07-11 | Method for preparing recycled aggregate concrete by using construction waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115231861A CN115231861A (en) | 2022-10-25 |
| CN115231861B true CN115231861B (en) | 2023-08-11 |
Family
ID=83670846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811378.4A Active CN115231861B (en) | 2022-07-11 | 2022-07-11 | Method for preparing recycled aggregate concrete by using construction waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115231861B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119216281B (en) * | 2024-09-27 | 2025-04-11 | 德州宝信新型建材有限公司 | A concrete processing aggregate conveying equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004181414A (en) * | 2002-12-05 | 2004-07-02 | Kurimoto Ltd | Crushed stone washing apparatus |
| CN104844042A (en) * | 2015-04-13 | 2015-08-19 | 张宗楼 | Concrete aggregate shaping method |
| CN205099585U (en) * | 2015-10-28 | 2016-03-23 | 刘中维 | Screening belt cleaning device is smashed to recycled concrete aggregate |
| CN107930828A (en) * | 2017-11-30 | 2018-04-20 | 张宗楼 | A kind of building waste removes the cleaning treatment technology of light weight sundries |
| JP2018094493A (en) * | 2016-12-12 | 2018-06-21 | 小牧工業株式会社 | Production method of recycled aggregate |
| CN210411444U (en) * | 2019-05-23 | 2020-04-28 | 宿迁市华益混凝土有限公司 | A screening shaking table for recycled concrete production |
| CN113663902A (en) * | 2021-08-25 | 2021-11-19 | 浙江三门永泰建材有限公司 | Recycled concrete aggregate screening system |
| CN114309015A (en) * | 2022-01-29 | 2022-04-12 | 张宗楼 | Building decoration garbage co-processing technology without manual sorting |
-
2022
- 2022-07-11 CN CN202210811378.4A patent/CN115231861B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004181414A (en) * | 2002-12-05 | 2004-07-02 | Kurimoto Ltd | Crushed stone washing apparatus |
| CN104844042A (en) * | 2015-04-13 | 2015-08-19 | 张宗楼 | Concrete aggregate shaping method |
| CN205099585U (en) * | 2015-10-28 | 2016-03-23 | 刘中维 | Screening belt cleaning device is smashed to recycled concrete aggregate |
| JP2018094493A (en) * | 2016-12-12 | 2018-06-21 | 小牧工業株式会社 | Production method of recycled aggregate |
| CN107930828A (en) * | 2017-11-30 | 2018-04-20 | 张宗楼 | A kind of building waste removes the cleaning treatment technology of light weight sundries |
| CN210411444U (en) * | 2019-05-23 | 2020-04-28 | 宿迁市华益混凝土有限公司 | A screening shaking table for recycled concrete production |
| CN113663902A (en) * | 2021-08-25 | 2021-11-19 | 浙江三门永泰建材有限公司 | Recycled concrete aggregate screening system |
| CN114309015A (en) * | 2022-01-29 | 2022-04-12 | 张宗楼 | Building decoration garbage co-processing technology without manual sorting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115231861A (en) | 2022-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100650509B1 (en) | Vibrating screen separation method and apparatus provided, including sedimentation storage tank | |
| AU2013334074B2 (en) | Method for extracting heavy metals from hard rock and alluvial ore | |
| CN108855587A (en) | A kind of building waste method for screening and separating | |
| CN209715218U (en) | A kind of solid waste crushes and screens device | |
| KR20020090354A (en) | Manufacturing method and apparatus for recycle sand exploiting construction waste concrete | |
| CN108015094A (en) | Building waste sorter | |
| KR100764643B1 (en) | Production method and apparatus for recycling aggregate using construction waste | |
| CN116889914A (en) | Solid-powder separation-based garbage recycling device for building construction | |
| CN115231861B (en) | Method for preparing recycled aggregate concrete by using construction waste | |
| KR20000058365A (en) | The constructive recycling methods and instruments of Reclaimed waste. | |
| CN108514953B (en) | Clean complete sets of useless regeneration aggregate edulcoration of building admittedly | |
| CN214555733U (en) | Grit fine granule material ore washing device | |
| KR100487089B1 (en) | The sorting system and the method of construction waste | |
| KR20040057498A (en) | Method and apparatus for producing recycling aggregate using waste concrete | |
| CN208627384U (en) | A kind of contaminant removal equipment of building waste | |
| KR100643655B1 (en) | Method and apparatus for producing circulating aggregate using wet dual rotating drum aggregate regenerator | |
| CN116493110A (en) | Recycled aggregate preparation device for ready-mixed concrete | |
| CN212143461U (en) | Quick concrete sand-stone separator | |
| JPH10338558A (en) | Method for regenerating concrete aggregate | |
| CN211026639U (en) | Dry sand making equipment | |
| CN114849871A (en) | Multipurpose building rubbish intelligence crushing apparatus | |
| KR200354049Y1 (en) | A stone manufacturing apparatus | |
| KR20050051428A (en) | Method of regenerating sand utilizing waste concrete and an apparatus thereof | |
| CN213557581U (en) | Automatic river sand grading and cleaning system | |
| CN212731298U (en) | Waste water recovery pond of concrete mixing plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |