CN110328045B - Fine sand recovery system and working method thereof - Google Patents
Fine sand recovery system and working method thereof Download PDFInfo
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- CN110328045B CN110328045B CN201910603042.7A CN201910603042A CN110328045B CN 110328045 B CN110328045 B CN 110328045B CN 201910603042 A CN201910603042 A CN 201910603042A CN 110328045 B CN110328045 B CN 110328045B
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- 239000004576 sand Substances 0.000 title claims abstract description 281
- 238000011084 recovery Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005406 washing Methods 0.000 claims abstract description 59
- 238000012216 screening Methods 0.000 claims abstract description 54
- 238000004062 sedimentation Methods 0.000 claims abstract description 50
- 239000004575 stone Substances 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 20
- 239000008397 galvanized steel Substances 0.000 claims abstract description 20
- 239000002893 slag Substances 0.000 claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 239000010419 fine particle Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011798 excavation material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
-
- 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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
-
- 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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention relates to a working system for solving the problem of recycling concrete raw materials, in particular to a fine powder sand recycling system with high recycling rate and a working method thereof, wherein the recycling system mainly comprises a sand and stone screening mechanism, a sand washing device, a fine sand sedimentation recycling device and a waste slag tank; the sand and stone screening mechanism comprises a movable base, a screening frame, a supporting roller, a winding belt, a first screen layer, a second screen layer, a sand and stone recycling bin and a vibrator; the sand washing device mainly comprises a vertical bracket, a wheel bucket type sand washing machine, a connecting pipe fitting, a sand washing pool and a power device thereof; the fine sand sedimentation recovery device is arranged below the sand washing device and mainly comprises a fine sand sedimentation hopper, a guide-out groove, a spiral rotary machine and a galvanized steel pipe; the invention uses the components of each mechanism to sequentially carry out the works of filtering separation, elutriation separation and rotation separation, thus not only improving the recovery rate of fine sand and the content of fine particles in sand materials, but also reducing the manufacturing cost in engineering construction and ensuring the stability and reliability of the workability of concrete.
Description
Technical Field
The invention relates to a working system for solving the problem of recycling concrete raw materials, in particular to a fine powder sand recycling system with high recycling rate and a working method thereof.
Background
In the area junction lock engineering, such as Bai Danyao junction lock engineering, the first and second line lock walls are dock type structure, and the total amount of concrete required for manufacturing the lock walls is more than 70 ten thousand m 3 The sand amount is about 45 ten thousand m 3 The sand and stone materials in the required raw materials are mixed and screened by adopting river bed dredging materials and excavation materials, but the small amount of fine particles of sand in the dredging materials leads to unstable workability of concrete, the pipe is easy to be blocked during pumping, the smooth casting of the concrete cannot be ensured, and the problem of balance of the amount of the fine particles of the river sand is required to be solved as much as possible at present, so that the smooth casting of the concrete can be ensured.
In order to overcome the existing problems, the prior art has made a plurality of solving measures, such as increasing the contents of cement, fly ash and the like in raw materials, reducing the water-cement ratio, or directly doping and outsourcing fine sand and the like, but if the methods of adding cement, fly ash and the like are added, the implementation cost is extremely high and the strength of the concrete is difficult to ensure; if the fine sand is purchased directly, the market price is very high during implementation, and the manufacturing cost is seriously increased, so that the problems of easy performance of concrete cannot be effectively relieved by the existing solutions, and the cost cannot be controlled in a reasonable range.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose a working system for recovering concrete raw materials, in particular to a fine sand recovery system with high recovery rate and a working method thereof, so as to solve the problem of less fine particles of river sand raw materials in lock wall concrete.
In order to achieve the above purpose, the invention adopts the following technical scheme: the fine sand recovery system is characterized by mainly comprising a sand screening mechanism, a sand washing device, a fine sand sedimentation recovery device and a waste slag tank;
the sand and stone screening mechanism comprises a movable base, a screening frame, a supporting roller, a winding belt, a first screen layer, a second screen layer, a sand material recycling box and a vibrator; wherein the mobile base is mounted below the screening frame to support the screening frame; the screening machine frame is formed by surrounding and assembling two long side plates, a short side plate and a bottom plate which are oppositely arranged in parallel, the short side plate is vertically connected between the two long side plates, a feed hopper is arranged on the outer side surface of the short side plate and is arranged on the outer side of the short side plate through a support frame, the installation position of the feed hopper is higher than the top of the short side plate, and a feed opening of the feed hopper is right opposite to the upper part of the cavity structure; parallel through grooves are formed in the top and middle waist positions of the two long side plates along the length direction, and cuboid flange sliding rails along the length direction are arranged on the inner side walls below the through grooves; the supporting roller is arranged in the through groove and axially and rotatably arranged on the inner wall of the through groove through the terminal shaft ends at the two ends to form an installation structure for supporting the roller to rotate around the axis; the first screen layer and the second screen layer are sequentially connected and arranged on the screening frame from top to bottom through a coiled belt, the plane lengths of the two screen layers are consistent with the bottom plate, and the width of the two screen layers is smaller than the width of the bottom plate; the two screen layers are respectively composed of a filter screen and a screen edge; one edge of the coiled belt is fixedly connected outside the screen cloth covered edge in a surrounding manner, the coiled belt is provided with a pore matched with the edge position of the filter screen, and the filter screen penetrates through the pore and is fixedly connected with the screen cloth covered edge; the other edge of the coiled belt extends to the supporting roller in a stretching mode and winds and surrounds the supporting roller, and the coiled belt is driven to be wound and unwound when the supporting roller rotates forwards and backwards so as to adjust the lifting height of the first screen layer or the second screen layer; the sand recycling box is of a box body structure with an opening on the top surface, is arranged between the second screen layer and the bottom plate and is supported by the bottom plate, and a groove-shaped sliding block capable of sliding along the flange sliding rail is arranged at the edge of the opening of the box body in the length direction; the vibrator is arranged beside the screening machine frame to drive the screening machine frame to integrally vibrate so as to operate throwing screening work;
the sand washing device mainly comprises a vertical bracket, a wheel bucket type sand washing machine, a connecting pipe fitting, a sand washing tank and a power device thereof, wherein the vertical bracket is a trapezoid bracket, a main body of the vertical bracket consists of a counterweight support and a side ladder which is arranged by depending on the counterweight support, the top surface of the vertical bracket is provided with a working platform for installing the sand washing tank, and the top of the vertical bracket is equal to or similar to the horizontal position arranged at the top of a movable base; the sand washing pool is formed into a square groove structure for storing sand and supporting the wheel bucket type sand washing machine to work, a through hole is formed in the bottom of the sand washing pool and is a tail water outlet, a connecting pipe fitting is arranged at the tail water outlet, one end of the connecting pipe fitting is communicated with the tail water outlet, and the other end of the connecting pipe fitting is obliquely downwards communicated into the fine sand sedimentation recovery device from the tail water outlet; the wheel bucket type sand washer is connected with the power device and then is suspended in the sand washing pool;
the fine sand sedimentation recovery device is arranged below the sand washing device and mainly comprises a fine sand sedimentation hopper, a guide-out groove, a spiral rotary machine and a galvanized steel pipe, wherein the fine sand sedimentation hopper is formed into a pyramid-shaped cavity structure, a tail water inlet is formed near the top and is communicated with the sand washing tank through a connecting pipe fitting, and a slag discharge port connected with the galvanized steel pipe is formed near the bottom; the spiral rotary machine is arranged on the fine sand sedimentation bucket.
Preferably, the waste slag pool is communicated with the fine sand sedimentation bucket through a galvanized steel pipe, and the galvanized steel pipe is connected to the waste slag pool from the fine sand sedimentation bucket in an inclined downward manner.
Preferably, the bucket-type sand washer comprises a rotating impeller which is arranged in the sand washing pool, the rotating impeller is formed by arranging a plurality of polygonal blades around the center of the impeller in a circumferential matrix, the center of the rotating impeller is provided with a rotating shaft, the power device mainly comprises an electric motor and a speed reducer which are electrically connected, the power device is arranged on the outer side wall of the sand washing pool, meanwhile, the electric motor is electrically connected with the rotating shaft in a transmission manner, the rotating shaft is driven by the electric motor to rotate and drive the rotating impeller to rotate, the polygonal blades are of a lamellar structure and can be formed into a parallelogram or a rectangle or a trapezoid, and the blades are tangential with the circumferential curved surface of the rotating impeller.
Preferably, the spiral rotary machine mainly comprises a transmission motor, a conveying groove and a threaded rotating shaft, wherein the threaded rotating shaft is axially sleeved in the conveying groove and then is integrally and vertically arranged in a fine sand sedimentation bucket; the conveying groove is provided with a sand discharge port close to the top, and fine powder sand rotationally separated by the threaded rotating shaft is discharged from the sand discharge port through the sand discharge port.
Preferably, the movable base is formed into a movable structure and mainly comprises a supporting plate frame, a supporting underframe, a spiral positioning shaft, an anti-slip turning plate and a sliding wheel, wherein the supporting plate frame is assembled and connected with the supporting underframe up and down, and the anti-slip turning plate, the spiral positioning shaft and the sliding wheel are respectively arranged on the bottom surface of the supporting underframe; the bottoms of the outer sides of the two long side plates of the screening frame are respectively and elastically connected with the side surfaces of the supporting plate frame through 2-3 vibrating screen springs.
Preferably, the side ladder is formed into a stepped platform or a vertical ladder structure.
Preferably, the leading-out groove of the fine sand sedimentation recovery device is connected with a sand discharge port at the beginning end and is communicated with the sand conveying belt and the sand storage bin at the end.
The working method of the fine sand recovery system is characterized by mainly comprising the following steps of:
1) And (3) screening layer separation: pouring the sand and stone mixture into a sand and stone screening mechanism, starting a vibrator to enable a screening frame to vibrate and start the sand and stone mixture to throw, isolating stones on a first screen layer through the first screen layer, isolating coarse sand on a second screen layer through the second screen layer, and screening, filtering and discharging the coarse sand and fine sand mixture into a sand recycling box at the bottom;
2) And (3) elutriation and separation: conveying coarse and fine sand mixture in a sand material recovery box to a sand washing pool of a sand washing device, starting a bucket type sand washer, carrying out elutriation and separation on the coarse and fine sand mixture, stirring, overturning and elutriating the coarse sand mixture in water of the sand washing pool, separating and dewatering the coarse sand mixture in a rotating impeller, discharging the coarse sand mixture to a sand material conveying belt, inputting the coarse sand mixture into a sand storage bin, and conveying the rest tail water to a fine sand sedimentation bucket of a fine sand sedimentation recovery device through a connecting pipe fitting;
3) And (3) rotary separation: in the fine sand sedimentation hopper, a spiral rotary machine is started to carry out rotary separation on tail water and separate fine sand and impurity wastewater, then the fine sand is transported onto a sand material conveying belt through a guiding-out groove and is input into a sand storage bin, and the impurity wastewater is transported to a waste slag pool through a galvanized steel pipe.
The beneficial effects of the invention are as follows: the invention utilizes the sand and stone screening mechanism, the sand washing device, the fine sand sedimentation recovery device and the waste slag pool to sequentially carry out filtration separation, elutriation separation and rotation separation, thereby not only improving the recovery rate of fine sand and the content of fine particles in sand materials, but also reducing the manufacturing cost in engineering construction and ensuring the stability and reliability of the workability of concrete.
Firstly, stones, coarse sand and coarse and fine sand mixed materials are respectively sieved layer by the sand sieving mechanism, meanwhile, two sides of a first sieve layer and a second sieve layer are provided with roller tape structures, the heights of the first sieve layer and the second sieve layer can be controlled by controlling tape stretching so as to lift an accommodating space, meanwhile, when tape stops winding and unwinding, a roller center shaft can be fixed by clamping a fixing tool, during discharging, a sand recycling box can be slidably taken out and the coarse and fine mixed sand materials are poured into a sand washing device, and when the first sieve layer and the second sieve layer are discharged, the gradient of the sieve layer can be adjusted so as to facilitate the discharging of the sieve layer due to the fact that the tape is flexible tape; the isomorphic movable base can provide a movable or fixed stable supporting underframe and a supporting plate frame capable of providing vibration adjustment, and the spiral positioning shaft and the anti-slip turning plate can play a main role in reinforcing fixation and preventing slipping.
Secondly, the sand washing device further separates coarse sand and fine sand mixture, and the sand washing square groove and the wheel bucket type sand washer provided by the invention clean coarse sand, separate and discharge the coarse sand and directly discharge tail water into the fine sand sedimentation recovery device; secondly, the fine sand sedimentation recovery device of the invention firstly concentrates and deposits tail water in the fine sand sedimentation hopper, then continuously and spirally revolves through the spiral revolving machine, thereby discharging fine sand out of the fine sand sedimentation hopper from the sand discharge port, and finally discharging the residual waste water and waste residue after treatment to the waste residue pool for concentrated treatment; the invention solves the problem of less fine particles of river sand raw materials in lock wall concrete of a ship lock through a series of working steps, improves the content of fine particles in sand by utilizing a mode of recovering the fine sand, has simple and efficient structure, is easy to manufacture and saves materials, can be repeatedly used after manufacturing is finished, reduces the purchasing cost of the fine sand, also reduces the updating cost of equipment, is convenient to construct by the method, saves the whole engineering cost, reduces the discharge of building waste materials through the recovery of the fine sand, realizes green and environment-friendly engineering construction, and can improve the content of the fine particles in finished sand and ensure the pumpability and the workability of the concrete.
Drawings
Fig. 1 is a schematic overall structure of the present invention.
FIG. 2 is a schematic diagram of a sand screening mechanism of the present invention.
FIG. 3 is a schematic view of the sand washer of the present invention.
FIG. 4 is a schematic view of the fine sand sedimentation recovery device of the present invention.
Fig. 5 is a schematic view of the structure of the screw rotary machine of the present invention.
The drawings are marked with the following description: 1-grit screening mechanism, 2-sand washing device, 3-fine sand sedimentation recovery device, 4-waste slag pool, 11-movable base, 12-screening frame, 13-supporting roller, 14-winding, 15-first screening layer, 16-second screening layer, 17-sand recycling box, 18-vibrator, 21-vertical support, 22-wheel bucket sand washer, 23-connecting pipe fitting, 24-sand washing pool, 25-power device, 31-fine sand sedimentation bucket, 32-conveying trough, 33-spiral rotator, 34-galvanized steel pipe, 35-leading-out trough, 111-supporting plate rack, 112-supporting chassis, 113-spiral positioning shaft, 114-anti-slip turnover plate and 115-sliding wheel.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings:
the fine sand recovery system mainly comprises a sand screening mechanism 1, a sand washing device 2, a fine sand sedimentation recovery device 3 and a waste slag tank 4;
the sand and stone screening mechanism 1 comprises a movable base 11, a screening frame 12, a supporting roller 13, a winding belt 14, a first screen layer 15, a second screen layer 16, a sand material recycling bin 17 and a vibrator 18; wherein a mobile base 11 is mounted under the screening frame 12 to support the screening frame 12; the screening machine frame 12 is formed by surrounding and assembling two long side plates, a short side plate and a bottom plate which are oppositely arranged in parallel to form an open frame-shaped cavity structure, the short side plate is vertically connected between the two long side plates, a feed hopper is arranged on the outer side surface of the short side plate, the feed hopper is arranged on the outer side of the short side plate through a support frame, the installation position of the feed hopper is higher than the top of the short side plate, and a feed opening of the feed hopper is right opposite to the upper part of the cavity structure; parallel through grooves are formed in the top and middle waist positions of the two long side plates along the length direction, and cuboid flange sliding rails along the length direction are arranged on the inner side walls below the through grooves; the supporting roller 13 is arranged in the through groove and axially and rotatably arranged on the inner wall of the through groove through terminal shafts at two ends to form an installation structure for supporting the roller 13 to rotate around the axis; the first screen layer 15 and the second screen layer 16 are sequentially connected and arranged on the screening frame 12 from top to bottom through the winding 14, the plane lengths of the two screen layers are consistent with the bottom plate, and the width of the two screen layers is smaller than the width of the bottom plate; the two screen layers are respectively composed of a filter screen and a screen edge thereof, the filter screen and the screen edge are both made of metal materials, the two screens are respectively stone and coarse sand screen, and the specifications of the screens are different and depend on the particle size of the sand; one edge of the coiled tape 14 is fixedly connected outside the screen cloth edge, and the coiled tape 14 is provided with a pore matched with the edge of the filter screen, and the filter screen penetrates through the pore and is fixedly connected with the screen cloth edge; the other edge of the tape 14 extends to the supporting roller 13 in a stretching mode and winds and surrounds the supporting roller 13, and the tape 14 is driven to be retracted and released when the supporting roller 13 rotates forward and backward so as to adjust the lifting height of the first screen layer 15 or the second screen layer 16; the sand recycling bin 17 is of a box body structure with an opening on the top surface, is arranged between the second screen layer 16 and the bottom plate and is supported by the bottom plate, and a groove type sliding block capable of sliding along the flange sliding rail is arranged at the edge of the opening of the box body in the length direction; vibrator 18 is mounted beside screen frame 12 to drive the overall vibration of screen frame 12 to operate a slinging screening operation; during unloading, the sand recycling bin 17 can be slidably taken out and the coarse and fine mixed sand is poured into the sand washing device 2, and when the first screen layer 15 and the second screen layer 16 are unloaded, the inclination of the screen layers can be adjusted to facilitate the unloading of the screen layers due to the fact that the roll tape 14 is a flexible roll tape 14;
the movable base 11 is formed into a movable structure and mainly comprises a support plate frame 111, a support underframe 112, a spiral positioning shaft 113, an anti-slip turning plate 114 and a sliding wheel 115, wherein the support plate frame 111 is assembled and connected with the support underframe 112 up and down, and the anti-slip turning plate 114, the spiral positioning shaft 113 and the sliding wheel 115 are respectively arranged on the bottom surface of the support underframe 112; the bottoms of the outer sides of the two long side plates of the screening frame 12 are respectively and elastically connected with the side surfaces of the supporting plate frame 111 through 2-3 vibrating screen springs; further, the vibrating screen spring is a vibrating screen damping spring, and is fixedly connected with the supporting plate frame 111 and the screening frame 12 through welding to form an elastic movable mounting structure; the supporting plate frame 111 is formed by splicing a plurality of steel bars in a crossed mode to form a three-dimensional frame structure, and the top area of the supporting plate frame 111 is matched with the bottom area of the screening frame 12; the supporting underframe 112 is formed into a box body structure for fixing the supporting plate frame 111, a wheel groove for installing the sliding wheels 115 is formed in the bottom surface of the box body, an empty groove for accommodating the spiral positioning shaft 113 is formed upwards from the bottom surface of the box body, and the sliding wheels 115 are installed at the wheel groove of the supporting underframe 112 and provided with at least four sliding wheels 115 for supporting sliding movement; the anti-slip folded plate 114 is arranged at the side of the sliding wheel 115 and is fixed through hinging, when the sliding wheel 115 runs, the anti-slip folded plate 114 is upwards folded, so that the sliding of the movable base 11 is prevented from being influenced, and when the sliding wheel 115 is static, the anti-slip folded plate 114 is downwards folded and tightly abutted on the ground, so that the sliding of the movable base 11 is prevented; the spiral positioning shaft 113 is integrally formed and comprises a limit cap and a spiral rod, the spiral positioning shaft 113 is installed on the bottom surface of the box body in a penetrating mode, the limit cap is installed above the bottom surface of the box body to limit the downward extending length of the spiral rod through the limit cap and prevent the spiral positioning shaft 113 from being separated from the box body, meanwhile, an elastic adjusting sleeve sleeved outside the spiral rod is arranged on the bottom surface of the box body, the spiral rod is adjusted to ascend and descend through the elastic adjusting sleeve, when the sliding wheel 115 is static, the spiral rod is adjusted downwards to tightly prop against the ground or buried in the ground, sliding of the moving base 11 is further prevented, and when the sliding wheel 115 slides, the spiral rod is adjusted upwards to be accommodated through a hollow groove, and the spiral positioning shaft 113 is prevented from contacting the ground to influence sliding;
the sand washing device 2 mainly comprises a vertical support 21, a wheel bucket type sand washing machine 22, a connecting pipe fitting 23, a sand washing tank 24 and a power device 25 thereof, wherein the vertical support 21 is a trapezoid support, a main body of the vertical support is composed of a counterweight support and a side ladder which is arranged by depending on the counterweight support, the top surface of the vertical support is provided with a working platform for installing the sand washing tank 24, and the top of the vertical support 21 and the horizontal position arranged at the top of the movable base 11 are at the same height or approximate; the side ladder is formed into a ladder stand or a vertical ladder structure, the middle ladder stand side ladder is a protruding ladder step boss, and the vertical ladder structure is an inclined ladder structure; the sand washing pool 24 is formed into a square groove structure for storing sand and supporting the wheel bucket type sand washing machine 22 to work, a through hole is formed in the bottom of the sand washing pool 24 and is a tail water outlet, a connecting pipe fitting 23 is arranged at the tail water outlet, one end of the connecting pipe fitting 23 is communicated with the tail water outlet, the other end of the connecting pipe fitting 23 is obliquely downwards communicated into the fine sand precipitation recovery device 3 from the tail water outlet, and the connecting pipe fitting 23 can be a galvanized steel pipe 34 with the diameter of 300 mm; the wheel bucket type sand washer 22 is connected with a power device 25 and then is suspended in the sand washing pool 24; the bucket-type sand washer 22 comprises a rotating impeller which is arranged in the sand washing pool 24, the rotating impeller is formed by arranging a plurality of polygonal blades around the center of the impeller in a circumferential matrix, the center of the rotating impeller is provided with a rotating shaft, the power device 25 mainly comprises an electric motor and a speed reducer which are electrically connected, the electric motor is arranged on the outer side wall of the sand washing pool 24, and the electric motor is electrically connected with the rotating shaft to drive the rotating shaft to rotate and drive the rotating impeller to rotate through the electric motor, the polygonal blades are of a sheet-shaped structure and can be formed into a parallelogram or a rectangle or a trapezoid, and the blades are tangential with the circumferential curved surface of the rotating impeller;
the fine sand sedimentation recovery device 3 is arranged below the sand washing device 2 and mainly comprises a fine sand sedimentation hopper 31, a guide-out groove 35, a spiral rotary machine 33 and a galvanized steel pipe 34, wherein the fine sand sedimentation hopper 31 is formed into a pyramid-shaped cavity structure, a tail water inlet is formed near the top and communicated with the sand washing tank 24 through a connecting pipe fitting 23, and a slag discharge port connected with the galvanized steel pipe 34 is formed near the bottom; the spiral rotator 33 is mounted on the fine sand sedimentation bucket 31, wherein the spiral rotator 33 mainly comprises a transmission motor, a conveying groove 32 and a threaded rotating shaft, the threaded rotating shaft is axially sleeved in the conveying groove 32 and then integrally and vertically mounted in the fine sand sedimentation bucket 31, the top of the spiral rotator penetrates through the fine sand sedimentation bucket 31, the top surface of the spiral rotator is arranged outside the fine sand sedimentation bucket 31 and is in driving connection with the transmission motor, and the bottom of the spiral rotator is connected with an emptying valve; the conveying groove 32 is provided with a sand discharge port near the top, and fine powder sand rotationally separated by the threaded rotating shaft is discharged from the sand discharge port through the sand discharge port; the initial end of the guiding-out groove 35 of the fine sand sedimentation recovery device 3 is connected with a sand discharge port, the final end of the guiding-out groove is communicated with a sand conveying belt and a sand storage bin, the guiding-out groove 35 is an inclined transmission through groove, and the sand conveying belt is arranged as a roller-type conveying belt and is connected to the sand storage bin with sufficient space;
the waste slag pool 4 is communicated with the fine sand sedimentation hopper 31 through the galvanized steel pipe 34, the galvanized steel pipe 34 is connected to the waste slag pool 4 from the fine sand sedimentation hopper 31 in an inclined downward mode, and the galvanized steel pipe 34 can be two galvanized steel pipes 34 with the diameter of 100mm, so that natural discharge into the waste slag pool 4 is facilitated.
The working method of the fine powder sand recovery system mainly comprises the following steps:
1) And (3) screening layer separation: pouring the sand and stone mixture into a sand and stone screening mechanism 1, starting a vibrator 18 to enable a screening rack 12 to vibrate and start the sand and stone mixture to perform throwing movement, isolating stones on a first screen layer 15 through the first screen layer 15, isolating coarse sand on a second screen layer 16 through the second screen layer 16, screening, filtering and dropping the coarse sand and fine sand mixture into a sand recycling bin 17 at the bottom, outputting the screened materials through adjusting a winding 14 by stones and coarse sand of the first screen layer 15 and the second screen layer 16, and collecting the coarse sand and fine sand mixture screened and dropped by the two screen layers by the sand recycling bin 17 and guiding out the coarse sand and fine sand mixture in a sliding and pulling mode;
2) And (3) elutriation and separation: conveying the coarse and fine sand mixture in the sand material recovery box 17 to a sand washing pool 24 of the sand washing device 2, starting a bucket wheel type sand washer 22, carrying out elutriation and separation on the coarse and fine sand mixture, stirring, turning over and elutriating the coarse sand mixture in water in the sand washing pool 24, separating and dewatering the coarse sand mixture in a rotating impeller, discharging the coarse sand mixture to a sand material conveying belt, inputting the coarse sand mixture into a sand storage bin, and conveying the rest tail water to a fine sand powder sedimentation bucket 31 of the fine sand sedimentation recovery device 3 through a connecting pipe fitting 23;
3) And (3) rotary separation: in the fine sand sedimentation bucket 31, tail water is concentrated and precipitated at the bottom of the fine sand sedimentation bucket 31, a spiral rotary machine 33 is started to carry out rotary separation on the tail water and separate fine sand and impurity wastewater, the fine sand rises to a sand discharge port along with the rotary force of a spiral shaft, then the fine sand is transported to a sand material conveying belt through a guiding-out groove 35 and is input into a sand storage bin, and the impurity wastewater is transported to a waste slag pool 4 through a galvanized steel pipe 34.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make various changes and modifications within the scope of the technical solution of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical matters of the present invention are still within the scope of the technical solution of the present invention.
Claims (6)
1. The fine sand recovery system is characterized by mainly comprising a sand screening mechanism, a sand washing device, a fine sand sedimentation recovery device and a waste slag tank;
the sand and stone screening mechanism comprises a movable base, a screening frame, a supporting roller, a winding belt, a first screen layer, a second screen layer, a sand material recycling box and a vibrator; wherein the mobile base is mounted below the screening frame to support the screening frame; the screening machine frame is formed by surrounding and assembling two long side plates, a short side plate and a bottom plate which are oppositely arranged in parallel, the short side plate is vertically connected between the two long side plates, a feed hopper is arranged on the outer side surface of the short side plate and is arranged on the outer side of the short side plate through a support frame, the installation position of the feed hopper is higher than the top of the short side plate, and a feed opening of the feed hopper is right opposite to the upper part of the cavity structure; parallel through grooves are formed in the top and middle waist positions of the two long side plates along the length direction, and cuboid flange sliding rails along the length direction are arranged on the inner side walls below the through grooves; the supporting roller is arranged in the through groove and axially and rotatably arranged on the inner wall of the through groove through the terminal shaft ends at the two ends to form an installation structure for supporting the roller to rotate around the axis; the first screen layer and the second screen layer are sequentially connected and arranged on the screening frame from top to bottom through a coiled belt, the plane lengths of the two screen layers are consistent with the bottom plate, and the width of the two screen layers is smaller than the width of the bottom plate; the two screen layers are respectively composed of a filter screen and a screen edge; one edge of the coiled belt is fixedly connected outside the screen cloth covered edge in a surrounding manner, the coiled belt is provided with a pore matched with the edge position of the filter screen, and the filter screen penetrates through the pore and is fixedly connected with the screen cloth covered edge; the other edge of the coiled belt extends to the supporting roller in a stretching mode and winds and surrounds the supporting roller, and the coiled belt is driven to be wound and unwound when the supporting roller rotates forwards and backwards so as to adjust the lifting height of the first screen layer or the second screen layer; the sand recycling box is of a box body structure with an opening on the top surface, is arranged between the second screen layer and the bottom plate and is supported by the bottom plate, and a groove-shaped sliding block capable of sliding along the flange sliding rail is arranged at the edge of the opening of the box body in the length direction; the vibrator is arranged beside the screening machine frame to drive the screening machine frame to integrally vibrate so as to operate throwing screening work;
the sand washing device mainly comprises a vertical bracket, a wheel bucket type sand washing machine, a connecting pipe fitting, a sand washing tank and a power device thereof, wherein the vertical bracket is a trapezoid bracket, a main body of the vertical bracket consists of a counterweight support and a side ladder which is arranged by depending on the counterweight support, the top surface of the vertical bracket is provided with a working platform for installing the sand washing tank, and the top of the vertical bracket is equal to or similar to the horizontal position arranged at the top of a movable base; the sand washing pool is formed into a square groove structure for storing sand and supporting the wheel bucket type sand washing machine to work, a through hole is formed in the bottom of the sand washing pool and is a tail water outlet, a connecting pipe fitting is arranged at the tail water outlet, one end of the connecting pipe fitting is communicated with the tail water outlet, and the other end of the connecting pipe fitting is obliquely downwards communicated into the fine sand sedimentation recovery device from the tail water outlet; the wheel bucket type sand washer is connected with the power device and then is suspended in the sand washing pool;
the rotary impeller is formed by arranging a plurality of polygonal blades around the center of the impeller in a circumferential matrix, the center of the rotary impeller is provided with a rotary shaft, the power device mainly comprises an electric motor and a speed reducer which are electrically connected, the power device is arranged on the outer side wall of the sand washing tank, and meanwhile, the electric motor is electrically connected with the rotary shaft in a transmission manner, so that the rotary shaft is driven by the electric motor to rotate and drive the rotary impeller to rotate, the polygonal blades are of a lamellar structure and can be formed into a parallelogram or rectangle or trapezoid, and the blades are tangential to the circumferential curved surface of the rotary impeller;
the fine sand sedimentation recovery device is arranged below the sand washing device and mainly comprises a fine sand sedimentation hopper, a guide-out groove, a spiral rotary machine and a galvanized steel pipe, wherein the fine sand sedimentation hopper is formed into a pyramid-shaped cavity structure, a position close to the top is communicated with the sand washing tank through a connecting pipe fitting, and a slag discharge port connected with the galvanized steel pipe is formed close to the bottom; the spiral rotary machine is arranged on the fine sand sedimentation hopper;
the spiral rotary machine mainly comprises a transmission motor, a conveying groove and a threaded rotary shaft, wherein the threaded rotary shaft is axially sleeved in the conveying groove and then integrally and vertically arranged in a fine sand sedimentation bucket; the conveying groove is provided with a sand discharge port close to the top, and fine powder sand rotationally separated by the threaded rotating shaft is discharged from the sand discharge port through the sand discharge port.
2. The fine powder sand recovery system of claim 1, wherein the waste slag pool is in communication with the fine powder sand settling hopper through a galvanized steel pipe, the galvanized steel pipe being connected obliquely downward from the fine powder sand settling hopper to the waste slag pool.
3. The fine sand recovery system according to claim 1, wherein the movable base is formed into a movable structure and mainly comprises a supporting plate frame, a supporting underframe, a spiral positioning shaft, an anti-slip turning plate and a sliding wheel, wherein the supporting plate frame is assembled and connected with the supporting underframe up and down, and the anti-slip turning plate, the spiral positioning shaft and the sliding wheel are respectively arranged on the bottom surface of the supporting underframe; the bottoms of the outer sides of the two long side plates of the screening frame are respectively and elastically connected with the side surfaces of the supporting plate frame through 2-3 vibrating screen springs.
4. The fine sand reclamation system as recited in claim 1, wherein the side ladder is formed as a step or a vertical ladder structure.
5. The fine sand recovery system according to claim 1, wherein the leading-out groove of the fine sand sedimentation recovery device is connected with a sand discharge port at the beginning end and is communicated with a sand conveying belt and a sand storage bin at the end.
6. A method of operation of a silt recovery system according to any one of claims 1 to 5, wherein said method of operation essentially comprises the steps of:
1) And (3) screening layer separation: pouring the sand and stone mixture into a sand and stone screening mechanism, starting a vibrator to enable a screening frame to vibrate and start the sand and stone mixture to throw, isolating stones on a first screen layer through the first screen layer, isolating coarse sand on a second screen layer through the second screen layer, and screening, filtering and discharging the coarse sand and fine sand mixture into a sand recycling box at the bottom;
2) And (3) elutriation and separation: conveying coarse and fine sand mixture in a sand material recovery box to a sand washing pool of a sand washing device, starting a bucket type sand washer, carrying out elutriation and separation on the coarse and fine sand mixture, stirring, overturning and elutriating the coarse sand mixture in water of the sand washing pool, separating and dewatering the coarse sand mixture in a rotating impeller, discharging the coarse sand mixture to a sand material conveying belt, inputting the coarse sand mixture into a sand storage bin, and conveying the rest tail water to a fine sand sedimentation bucket of a fine sand sedimentation recovery device through a connecting pipe fitting;
3) And (3) rotary separation: in the fine sand sedimentation hopper, a spiral rotary machine is started to carry out rotary separation on tail water and separate fine sand and impurity wastewater, then the fine sand is transported onto a sand material conveying belt through a guiding-out groove and is input into a sand storage bin, and the impurity wastewater is transported to a waste slag pool through a galvanized steel pipe.
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| CN111616197B (en) * | 2020-07-07 | 2021-07-30 | 舟山浩睿蓝船舶科技开发有限公司 | Mussel belt cleaning device |
| CN111790516B (en) * | 2020-07-16 | 2022-03-29 | 中铁二局集团有限公司 | Circulating type building slurry hydraulic separation system and method |
| CN112317123A (en) * | 2020-10-16 | 2021-02-05 | 魏雪 | Concrete recovery sand and stone separator for building engineering |
| CN114904759A (en) * | 2022-04-21 | 2022-08-16 | 江苏山宝集团有限公司 | Fine sand recovery device |
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