CN116535120A - Sand-stone separation mechanism for concrete mixing plant and waste concrete recycling method - Google Patents
Sand-stone separation mechanism for concrete mixing plant and waste concrete recycling method Download PDFInfo
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- CN116535120A CN116535120A CN202310514652.6A CN202310514652A CN116535120A CN 116535120 A CN116535120 A CN 116535120A CN 202310514652 A CN202310514652 A CN 202310514652A CN 116535120 A CN116535120 A CN 116535120A
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- 239000004575 stone Substances 0.000 title claims abstract description 38
- 239000002699 waste material Substances 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 title claims abstract description 13
- 238000002156 mixing Methods 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 164
- 239000004576 sand Substances 0.000 claims abstract description 64
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000007921 spray Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims description 68
- 238000005406 washing Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims 3
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
- B03B9/063—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial the refuse being concrete slurry
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- 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
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/002—Water
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/246—Cements from oil shales, residues or waste other than slag from waste building materials, e.g. waste asbestos-cement products, demolition waste
-
- 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)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention belongs to the technical field of resource recovery of concrete mixing stations, and particularly relates to a sand and stone separation mechanism for a concrete mixing station and a waste concrete recovery method. Including the carwash groove, the carwash groove output is connected with the shale shaker, and the shale shaker top is equipped with spray set, and the mortar water output of shale shaker has decanter centrifuge through mortar pump, pipe connection, and the vibration fluidized bed is installed to decanter centrifuge's solid output's below, and vibration fluidized bed output below is equipped with the chute, and decanter centrifuge's liquid output has the thick liquid pitcher through pipe connection, and the thick liquid pitcher has the clean water jar through overflow pipe connection, is equipped with thick liquid pump, clean water pump in thick liquid pitcher, the clean water jar respectively, and the clean water pump output is connected with spray set, carwash groove, thick liquid pitcher respectively through pipeline, valve. The invention can separate and recycle sand, stone and water in the waste concrete rapidly and efficiently, and meets the requirement of zero emission.
Description
Technical Field
The invention belongs to the technical field of resource recovery of concrete mixing stations, and particularly relates to a sand and stone separation mechanism for a concrete mixing station and a waste concrete recovery method.
Background
With the increasing environmental protection requirements of China and government departments, the environmental protection requirements of production sites of concrete mixing stations are increasing, more and more areas are increasing the control of the discharge of waste materials, waste residues, waste water and the like generated in the production process of the concrete mixing stations, and the mixing stations are required to be provided with high-performance and fine-control sand and stone separation equipment for separating and recycling residual, waste concrete and car washing water. However, in the prior art, there are a plurality of problems for recycling concrete, such as large occupied area for recycling by adopting sedimentation, and excessively long contact time with the outside in the sedimentation process, which not only causes environmental pollution, but also causes pollution of recycled raw materials, so that the recycled raw materials cannot meet the use standard; and some recovery modes adopting filtration can generate a large amount of solid waste which cannot be treated, so that the zero emission requirement cannot be met.
The patent with the application number of 202121441055.8 discloses a novel environment-friendly efficient sand and stone separation system, stones are sieved through a vibrating screen, sand is separated through a sand-water separation device, a cyclone and sand spiral, slurry water is recovered through a steel structure stirring tank and a clear water tank, but the patent has the following defects that slurry water is temporarily stored through a primary slurry water tank and a secondary slurry water tank in the recovery process, so that mortar is easy to settle and cannot form circulation at the bottom, hardening can occur due to long-time sedimentation, and the slurry is difficult to clean; the slurry separated by the sand-water separation device is used for cleaning the mixer truck, and the slurry contains surface sand, so that a pipeline is blocked, and the surface of the mixer truck is washed and dirtied; the cleaning device of the patent uses the slurry in the steel structure stirring tank to clean the stirring tank car, and the hidden danger of blocking the pipeline can be caused in the conveying process; the patent is provided with 3 steel structure stirring tanks which are connected in series to carry out sedimentation of solids in slurry, namely, because the sand-water separation device, the cyclone and the sand spiral separation sand have poor effects, a large amount of surface sand in the slurry needs to be subjected to sedimentation for 3 times for recycling; the sand is separated by the sand-water separation device, the cyclone and the sand spiral, and the device has the advantages of more used equipment, poor effect, long separation time and low separation efficiency; the vibrating screen can only screen stones, so that sand is required to be further screened in the subsequent process, and the workload of the subsequent process is increased; the vibrating screen of the patent has no drying function, and the screened stone belt water is conveyed to Dan Zidui, so that the water is stored for a long time on a working site, and the working environment is messy.
Disclosure of Invention
The invention aims to provide a sand and stone separating mechanism for a concrete mixing plant and a waste concrete recycling method, so as to solve the problems in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a grit separating mechanism for concrete mixing plant, including the carwash groove, the carwash groove output is connected with the shale shaker, the shale shaker top is equipped with spray set, the mortar water output of shale shaker is through the mortar pump, the pipe connection has decanter centrifuge, the vibration fluidized bed is installed to decanter centrifuge's solid output's below, vibration fluidized bed output below is equipped with the chute, decanter centrifuge's liquid output has the thick liquid jar through pipe connection, the thick liquid jar is connected with the clear water jar through the overflow pipe, thick liquid jar, be equipped with thick liquid pump in the clear water jar respectively, the clear water pump output is connected with spray set respectively through the pipeline, the valve, the carwash groove, belt cleaning device, the thick liquid jar, the carwash groove, the shale shaker, the mortar pump, decanter centrifuge, the vibration fluidized bed, submerged pump, valve and control system electric connection.
Further, an annular pipe is arranged at the bottom of the slurry tank, a plurality of through holes are formed in the bottom surface of the annular pipe, compressed air is introduced into the annular pipe, the slurry tank and the clean water tank are tank bodies internally provided with a high-low level liquid level meter, a water supplementing pipe is arranged above the clean water tank, and a water supplementing valve is arranged on the water supplementing pipe.
Further, the vibrating screen is a double-layer screen type vibrating and drying integrated machine, the output end of the vibrating screen is divided into three layers by the double-layer screen type structure of the vibrating screen, stones are output from the uppermost layer output end of the vibrating screen, coarse sand is output from the middle layer output end of the vibrating screen, mortar water is output from the lowermost layer output end of the vibrating screen, and a belt conveyor is arranged below the stone output end and the coarse sand output end of the vibrating screen.
Further, a filter is arranged on the pipeline of the clean water pump, which is connected with the spraying device and the car washing tank.
A method for recycling waste concrete comprises the following steps:
(1) And (3) collecting waste concrete: washing waste concrete outside the concrete mixer truck and in the storage tank by using water in the truck washing tank and the water in the clean water tank, repeatedly washing the concrete in the storage tank, collecting washed sand and stone slurry water in the truck washing tank, and flowing into the vibrating screen;
(2) Separating and recycling sand and stone: starting a spraying device and a vibrating screen, separating and drying by the vibrating screen to obtain stones, coarse sand and mortar water, conveying the stones and the coarse sand to a stone material pile and a sand material pile respectively by a belt conveyor, and enabling the mortar water to enter a horizontal screw centrifuge by a pipeline;
(3) And (3) surface sand dehydration: starting a horizontal screw centrifuge to enable mortar water to be quickly settled and separated, separating to obtain slurry water and mortar, enabling the mortar to fall into a feeding end of a vibrating fluidized bed, and conveying the slurry water to a slurry water tank through a pipeline;
(4) And (3) drying and recycling the facing sand: starting a vibrating fluidized bed, and fluidizing and drying the mortar to obtain sand particles, and conveying the sand particles to a sand material pile through a chute; the slurry water naturally subsides in the slurry water tank, the supernatant fluid enters the clean water tank through the overflow pipe, water in the clean water tank is used as water inlet of a spraying device and a car washing tank and concrete raw material water, water in the slurry water tank is used as concrete raw material water, water can be supplemented by the clean water tank when the water level in the slurry water tank is low, and a water supplementing valve can be opened to supplement water when the water level in the clean water tank is low;
(5) Recovering slurry: when the concrete is prepared, compressed air is introduced into the annular pipe to blow up solid particles at the bottom of the slurry tank and convey the solid particles to a concrete preparation device.
The invention has the following beneficial effects:
1. utilize double-deck screen cloth formula screening drying all-in-one to carry out the grit separation, separated stone and coarse sand simultaneously, significantly reduced the solid content in the mortar water, alleviateed decanter centrifuge's work burden, satisfied decanter centrifuge's feeding requirement, dried stone, coarse sand that screen out, avoided taking the band conveyer that the water was carried to lead to, sand, the job site long-term water that exists of stone heap, improved operational environment, satisfied the environmental protection requirement.
2. By utilizing the continuous and efficient centrifugal separation advantage of the horizontal screw centrifuge, the solid in the slurry can be quickly settled, so that the recovered water has less impurities, the pipeline can not be blocked during use, and the slurry in the slurry tank can be stored for a long time.
3. The vibrating screen, the horizontal decanter centrifuge and the vibrating fluidized bed can realize continuous operation, waste concrete can be efficiently and rapidly recycled, and slurry is not required to be temporarily stored through a primary slurry pond and a secondary slurry pond in the recycling process, so that solid sedimentation hardening is prevented during temporary storage.
4. The fluidized drying function of the vibrating fluidized bed is utilized to directly prepare the face sand and other solid particles into usable raw materials, thereby realizing the recycling of solid wastes and meeting the requirement of zero emission.
5. The solid particles at the bottom of the slurry tank are turned over by using an annular pipe filled with compressed air in the slurry tank, stirring is not needed, and the power consumption is reduced.
6. The clean water in the clean water tank is used for cleaning and spraying, and a filter is arranged on the pipeline to prevent the pipeline and the spray head from being blocked.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of the structure of the annular tube of the present invention.
FIG. 3 is a process flow diagram of the method of recycling waste concrete of the present invention.
Wherein: 1. a car washing tank; 2. a vibrating screen; 3. a spraying device; 4. a pipe; 5. a mortar pump; 6. a belt conveyor; 7. a horizontal decanter centrifuge; 8. vibrating the fluidized bed; 9. a chute; 10. a slurry tank; 11. an overflow pipe; 12. a clean water tank; 13. a slurry pump; 14. a clean water pump; 15. an annular tube; 16. a through hole; 17. a valve; 18. a water supplementing pipe; 19. a water supplementing valve; 20. and (3) a filter.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3, a sand and stone separating mechanism for a concrete mixing plant comprises a carwash tank 1, wherein the output end of the carwash tank 1 is connected with a vibrating screen 2, a spraying device 3 is arranged above the vibrating screen 2, the mortar water output end of the vibrating screen 2 is connected with a horizontal decanter centrifuge 7 through a mortar pump 5 and a pipeline 4, a vibrating fluidized bed 8 is arranged below the solid output end of the horizontal decanter centrifuge 7, a chute 9 is arranged below the output end of the vibrating fluidized bed 8, the liquid output end of the horizontal decanter centrifuge 7 is connected with a slurry tank 10 through the pipeline 4, the slurry tank 10 is connected with a clear water tank 12 through an overflow pipe 11, the slurry tank 10 and the clear water tank 12 are respectively provided with a slurry pump 13 and a clear water pump 14, the output end of the clear water pump 14 is respectively connected with the spraying device 3, the carwash tank 1 and the slurry tank 10 through the pipeline 4 and a valve 17, and the slurry tank 1, and the washing tank 1, the vibrating screen 2, the mortar pump 5, the horizontal decanter centrifuge 7, the vibrating fluidized bed 8, the slurry pump 13 and the clear water pump 14 and the valve 17 are electrically connected with a control system. The bottom of the slurry tank 10 is provided with an annular pipe 15, the bottom surface of the annular pipe 15 is provided with a plurality of through holes 16, compressed air is introduced into the annular pipe 15, the slurry tank 10 and the clean water tank 12 are tank bodies internally provided with high-low level liquid level meters, a water supplementing pipe 18 is arranged above the clean water tank 12, and a water supplementing valve 19 is arranged on the water supplementing pipe 18. The vibrating screen 2 is a double-layer screen type vibrating and drying integrated machine, the output end of the vibrating screen 2 is divided into three layers by the double-layer screen type structure of the vibrating screen 2, stones are output from the uppermost layer output end of the vibrating screen 2, coarse sand is output from the middle layer output end of the vibrating screen 2, mortar water is output from the lowermost layer output end of the vibrating screen 2, and a belt conveyor 6 is arranged below the stone output end and the coarse sand output end of the vibrating screen 2. The pipeline 4 of the clean water pump 14, which is connected with the spraying device 3 and the carwash tank 1, is provided with a filter 20.
A method for recycling waste concrete comprises the following steps:
(1) And (3) collecting waste concrete: washing waste concrete outside the concrete mixer and in the storage tank by using water in the clean water tank 12 and the carwash tank 1, repeatedly washing the concrete in the storage tank, collecting washed sand and stone slurry in the carwash tank 1 and flowing into the vibrating screen 2;
(2) Separating and recycling sand and stone: starting a spraying device 3 and a vibrating screen 2, separating and drying by the vibrating screen 2 to obtain stones, coarse sand and mortar water, conveying the stones and the coarse sand to a stone material pile and a sand material pile respectively by a belt conveyor 6, and enabling the mortar water to enter a horizontal decanter centrifuge 7 by a pipeline 4;
(3) And (3) surface sand dehydration: starting a horizontal decanter centrifuge 7 to enable mortar water to be quickly settled and separated, separating to obtain slurry water and mortar, enabling the mortar to fall into a feeding end of a vibrating fluidized bed 8, and conveying the slurry water to a slurry water tank 10 through a pipeline 4;
(4) And (3) drying and recycling the facing sand: starting a vibrating fluidized bed 8, and fluidizing and drying the mortar to obtain sand particles, wherein the sand particles are conveyed to a sand material pile through a chute 9; the slurry naturally settles in the slurry tank 10, the supernatant enters the clean water tank 12 through the overflow pipe 11, the water in the clean water tank 12 is used as the water inlet of the spraying device 3 and the carwash tank 1 and the concrete raw material water, the water in the slurry tank 10 is used as the concrete raw material water, the water can be supplemented by the clean water tank 12 when the water level in the slurry tank 10 is low, and the water supplementing valve 19 can be opened to supplement water when the water level in the clean water tank 12 is low;
(5) Recovering slurry: when the concrete is prepared, compressed air is introduced into the annular pipe 15 to blow up solid particles at the bottom of the slurry tank 10 and convey the solid particles to a concrete preparation device.
The working principle of the invention is as follows: the concrete mixer is characterized in that the car body and waste concrete in the mixer tank are cleaned by the car washing tank 1, the cleaned sand and stone slurry water is collected in the car washing tank 1 and flows into the vibrating screen 2, stones and coarse sand are separated by the vibrating screen 2, the residual mortar water is dehydrated by the horizontal screw centrifugal machine 7, the dehydrated mortar is mainly surface sand and cement, sand particles can be produced through fluidization and drying so as to be recycled, the slurry water flows into the slurry water tank 10 to be further settled, supernatant overflows to the clean water tank 12, clean water in the clean water tank 12 is used for the water inlet of the spraying device 6 and the car washing tank 1, a filter 20 is arranged on a pipeline 4 to prevent a spray head from being blocked, although solid particles still exist in the slurry water tank 10, the pipeline 4 can not be blocked, the slurry water can be used for preparing the concrete, compressed air is started when the concrete is prepared, the solid particles at the bottom of the slurry water tank 10 are blown up and are conveyed to a concrete preparation mechanism together, clean water in the clean water tank 12 can be used for supplementing when the water level in the slurry water tank 10 is lower, clean water in the clean water tank 12 can also be directly used, and the clean water in the clean water tank 12 is used for supplementing water when the clean water in the clean water level is lower, and the clean water valve is opened.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the invention, which are made by those skilled in the art, are included in the protection scope of the invention without departing from the design concept of the invention.
The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (5)
1. The utility model provides a grit separating mechanism for concrete mixing plant which characterized in that: including the carwash groove, the carwash groove output is connected with the shale shaker, the shale shaker top is equipped with spray set, the mortar water output of shale shaker has decanter centrifuge through the mortar pump, the pipe connection, the vibration fluidized bed is installed to decanter centrifuge's solid output's below, vibration fluidized bed output below is equipped with the chute, decanter centrifuge's liquid output has the thick liquid pitcher through the pipe connection, the thick liquid pitcher has the clear water jar through overflow pipe connection, thick liquid water pitcher, be equipped with thick liquid pump in the clear water jar respectively, the clear water pump output is connected with spray set respectively through the pipeline, the valve, the carwash groove, the thick liquid pitcher, the shale shaker, the mortar pump, decanter centrifuge, vibration fluidized bed, the submerged pump, valve and control system electric connection.
2. The sand and gravel separation mechanism for a concrete batching plant according to claim 1, wherein: the utility model discloses a high-low level liquid level meter, including thick liquid water pitcher, clear water pitcher, the thick liquid water pitcher bottom is installed the annular pipe, and the annular pipe bottom surface is equipped with a plurality of through-holes, lets in compressed air in the annular pipe, thick liquid water pitcher, clear water pitcher be the jar body of establishing high-low level liquid level meter in, and clear water pitcher top is equipped with the moisturizing pipe, installs the moisturizing valve on the moisturizing pipe.
3. The sand and gravel separation mechanism for a concrete batching plant according to claim 1, wherein: the vibrating screen is a double-layer screen type vibrating and drying integrated machine, the output end of the vibrating screen is divided into three layers by the double-layer screen type structure of the vibrating screen, stones are output from the uppermost layer output end of the vibrating screen, coarse sand is output from the middle layer output end of the vibrating screen, mortar water is output from the lowermost layer output end of the vibrating screen, and a belt conveyor is arranged below the stone output end and the coarse sand output end of the vibrating screen.
4. The sand and gravel separation mechanism for a concrete batching plant according to claim 1, wherein: and a filter is arranged on a pipeline of the clear water pump, which is connected with the spraying device and the car washing tank.
5. A method of recycling waste concrete from a sand separating mechanism for a concrete batching plant according to any one of claims 1 to 4, characterized by comprising the steps of:
(1) And (3) collecting waste concrete: the method comprises the steps of cleaning waste concrete outside a concrete mixer truck and in a storage tank by using water in a clean water tank and a car washing tank, repeatedly flushing the concrete in the storage tank, collecting cleaned sand and stone slurry in the car washing tank and flowing into a vibrating screen;
(2) Separating and recycling sand and stone: starting a spraying device and a vibrating screen, separating and drying by the vibrating screen to obtain stones, coarse sand and mortar water, conveying the stones and the coarse sand to a stone material pile and a sand material pile respectively by a belt conveyor, and enabling the mortar water to enter a horizontal screw centrifuge by a pipeline;
(3) And (3) surface sand dehydration: starting a horizontal screw centrifuge to enable mortar water to be quickly settled and separated, separating to obtain slurry water and mortar, enabling the mortar to fall into a feeding end of a vibrating fluidized bed, and conveying the slurry water to a slurry water tank through a pipeline;
(4) And (3) drying and recycling the facing sand: starting a vibrating fluidized bed, and fluidizing and drying the mortar to obtain sand particles, and conveying the sand particles to a sand material pile through a chute; the slurry water naturally subsides in the slurry water tank, the supernatant fluid enters the clean water tank through the overflow pipe, water in the clean water tank is used as water inlet of a spraying device and a car washing tank and concrete raw material water, water in the slurry water tank is used as concrete raw material water, water can be supplemented by the clean water tank when the water level in the slurry water tank is low, and a water supplementing valve can be opened for supplementing water when the water level in the clean water tank is low;
(5) Recovering slurry: when the concrete is prepared, compressed air is introduced into the annular pipe to blow up solid particles at the bottom of the slurry tank and convey the solid particles to a concrete preparation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310514652.6A CN116535120A (en) | 2023-05-09 | 2023-05-09 | Sand-stone separation mechanism for concrete mixing plant and waste concrete recycling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310514652.6A CN116535120A (en) | 2023-05-09 | 2023-05-09 | Sand-stone separation mechanism for concrete mixing plant and waste concrete recycling method |
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| CN116535120A true CN116535120A (en) | 2023-08-04 |
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| CN202310514652.6A Pending CN116535120A (en) | 2023-05-09 | 2023-05-09 | Sand-stone separation mechanism for concrete mixing plant and waste concrete recycling method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208869512U (en) * | 2018-10-01 | 2019-05-17 | 石家庄洁源机电设备有限公司 | Concrete recycle cyclic utilization system |
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