CN104552613A - Reutilization device of fine aggregates with grain size less than 5mm in concrete production - Google Patents
Reutilization device of fine aggregates with grain size less than 5mm in concrete production Download PDFInfo
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- CN104552613A CN104552613A CN201510020113.2A CN201510020113A CN104552613A CN 104552613 A CN104552613 A CN 104552613A CN 201510020113 A CN201510020113 A CN 201510020113A CN 104552613 A CN104552613 A CN 104552613A
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- sealing
- aggregate
- tape machine
- tape
- finished sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a reutilization device of fine aggregates with grain size less than 5mm in concrete production. The reutilization device comprises a feeding adhesive tape machine, wherein the output end of the feeding adhesive tape machine is provided with a coarse aggregate tank and a sand tank, the output end of the coarse aggregate tank sequentially passes through an inertial vibrating feeder, an aggregate adhesive tape machine I, an aggregate adhesive tape machine II, an aggregate adhesive tape machine III, a screening device, a primary air cooling adjusting bin and an aggregate adhesive tape machine V to be connected with a concrete batching plant; the output end of the sand tank sequentially passes through a pneumatic arc gate type feeder, a finished sand adhesive tape machine I, a finished sand adhesive tape machine II, a finished sand adhesive tape machine III and a finished sand adhesive tape machine IV to be connected with the concrete batching plant; a deslagging hole of the screening device is provided with a compounding adhesive tape machine, the output end of the compounding adhesive tape machine is provided with an aggregate bin, and the aggregate bin is arranged on a chute between the finished sand adhesive tape machine III and the finished sand adhesive tape machine IV. The reutilization device has the characteristics of being time-saving and labor-saving, meeting the environment protection requirement, and being simple in maintaining process and low in maintaining expense, and belongs to the field of civil engineering.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate in a kind of concrete production and be less than 5mm fine aggregate re-use device.
Background technology
See Fig. 1, the finished aggregate needed for hydraulic engineering concrete constitutive model, by the Preservation for Aggregate Production System production and supply of engineering installation, means of transportation can adopt sealing-tape machine to transport.Above the coarse aggregate tank 1-1 that finished aggregate is transported to concrete constitutive model by charging sealing-tape machine G1 and sand tank 1-2, store through dump car classification.
In order to control the quality requirement of concrete finished product aggregate, improve coarse aggregate performance, reduce the inferior mass runoff of aggregate, spy arranges screening plant.Respectively configuration one group of screening plant and a first cooling by wind regulate feed bin 4 to two concrete batching and mixing plants 16, wherein, one group of screening plant is divided into single order screening plant and second order screening plant screening plant also single order screening plant, second order screening plant can be merged layout for reducing screening building height, single order screening plant configures 1 2YKR3060 type Double-layer circular vibration screen 5 and 1 screw sand washer 7, and 2 YKR2460 type circular shale shakers 6 joined by second order screening plant.
Two articles of aggregate gallerys i.e. No. one aggregate sealing-tape machine G1-1 and No. two aggregate sealing-tape machine G1-2 is established bottom coarse aggregate tank 1-1, in order to control coarse aggregate regrading mixing ratio, inertial vibrating feeder 2 blowing is established below coarse aggregate tank 1-1, control the feeding coal of various aggregate, the optimal proportion of adjustment compound.Mix the coarse aggregate after blowing in proportion, respectively through the discharging of two coarse aggregate conveying circuits, wherein, one No. 1, strip transmission line road aggregate sealing-tape machine G1-1, one No. two aggregate sealing-tape machine G2-1, one No. three aggregate sealing-tape machine G3-1 discharging, No. 21, another strip transmission line road aggregate sealing-tape machine G1-2, two No. two aggregate sealing-tape machine G2-2, two No. three aggregate sealing-tape machine G3-2 discharging, respectively coarse aggregate is delivered to screening plant and carries out flushing screening, as the Double-layer circular vibration screen 5 of single order screening plant, aggregate is divided into 40 ~ 150mm and 5 ~ 40mm, two kinds of aggregates, respectively by the one No. four aggregate sealing-tape machine G4-1 after dehydration, two No. four aggregate sealing-tape machine G4-2, three No. four aggregate sealing-tape machine G4-3 and the four No. four aggregate sealing-tape machine G4-4 delivers to two second order screening plants.2 circular shale shakers 6 are furnished with in each second order screening plant, described 2 circular shale shakers 6 are directly installed on a first cooling by wind and regulate feed bin 4 top, 2 circular shale shakers 6 are classified as 40 ~ 80mm, 80 ~ 150mm, 5 ~ 20mm, 20 ~ 40mm, tetra-kinds of gratings coarse aggregate, and through chute 18, level Four coarse aggregate are directly sent into first cooling by wind adjustment feed bin 4.
Every platform Double-layer circular vibration screen 5 establishes a screw sand washer 7 below, coarse aggregate is less than the fine aggregate of 5mm through the size that single order screening plant is rejected, the elephant trunk entering φ 400mm after sand is carried through screw sand washer 7, and finally enter rejected material storehouse through rejected material aggregate bin 13 by the collaborative transport of rejected material sealing-tape machine Q1 and Q2, the Dumping Sites of specifying regularly is transported to by dumper.
The waste water that screening plant produces is first through automatic medicament feeding machine 11 dosing, waste water processing station catch pit is collected into by sewer, catch pit arranges mud submersible sewage pump 8, by waste water lifting to extra-high turbid desanding preliminary sedimentation device 9, waste water enters water purifier 10 after preliminary sedimentation, the process water that delivery turbidity is less than 200mg/l enters balancing tank as clear water, and clear water is transported to screening plant by clarified water pump 12 subsequently; The body refuse of discharging bottom preliminary sedimentation device 9 and water purifier 10 in processing procedure enters disc type vacuum filter 15, and through water-ring vacuum pump 14 concentration, dry mud is transported to rejected material aggregate bin 13 by rejected material sealing-tape machine Q2, and rejected material is regularly transported to the Dumping Sites of specifying by dumper.
Sand tank 1-2 tank deck is charging sealing-tape machine G1, a charging sealing-tape machine G1 is shared with coarse aggregate tank 1-1, to two sand tank 1-2 feed, two gallerys, each gallery totally 6 pneumatic arc gate-type batchers 3 are established below each sand tank 1-2, delivered to the sand storehouse of two concrete batching and mixing plants 16 respectively by multiple sealing-tape machine relay, the continus convergence realizing fine aggregate enters building.
Said structure, in running, finds by detecting:
1 coarse aggregate produce after screening plant screening be less than that 5mm fine aggregate accounts for coarse aggregate total amount 3%, 314.3 ten thousand m used according to certain large hydraulic engineering
3concrete calculates, and the use amount of coarse aggregate is about 493.1 ten thousand t, and the 5mm fine aggregate that is less than that coarse aggregate produces after screening is 14.8 ten thousand t, and this part fine aggregate all will be transported by dumper, wastes time and energy, and contaminated environment;
2 finished product coarse aggregates are at concrete constitutive model without the need to rinsing again, and quality can meet code requirement, and existing screening plant rinses coarse aggregate and needs a large amount of clear water, the operation of sewage disposal system of process set by waste water and maintenance cost huge.
It should be noted that, according to the industry standard that national departments concerned is formulated, the fine aggregate being less than 5mm under regrading sieve does not allow to be directly used in concrete mixing and stirring, and usually all as rejected material, this has become industry common recognition.
Summary of the invention
The object of the invention is the deficiency in order to overcome above-mentioned background technology, providing in a kind of concrete production and being less than 5mm fine aggregate re-use device, have time saving and energy saving, meet environmental requirement, maintenance process is simple, maintenance cost is low feature.
5mm fine aggregate re-use device is less than in a kind of concrete production provided by the invention, comprise the charging sealing-tape machine be connected with Preservation for Aggregate Production System, described charging sealing-tape machine output is respectively equipped with coarse aggregate tank and sand tank, the output of described coarse aggregate tank is provided with inertial vibrating feeder, described inertial vibrating feeder output is successively by an aggregate sealing-tape machine, No. two aggregate sealing-tape machines are connected with screening plant with No. three aggregate sealing-tape machines, the output of described screening plant is provided with first cooling by wind and regulates feed bin, described first cooling by wind regulates feed bin to be connected with concrete batching and mixing plant by No. five aggregate sealing-tape machines, the output of described sand tank is provided with pneumatic arc gate-type batcher, described pneumatic arc gate-type batcher is successively by a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines are connected with concrete batching and mixing plant with No. four finished sand sealing-tape machines, the slag-drip opening of described screening plant is provided with batching sealing-tape machine, the output of described batching sealing-tape machine is provided with aggregate bin, described aggregate bin is located on the chute between No. three finished sand sealing-tape machines and No. four finished sand sealing-tape machines.
In technique scheme, described screening plant comprises single order screening plant and second order screening plant, described single order screening plant output be connected with the input of second order screening plant by No. four aggregate sealing-tape machines, the slag-drip opening of described single order screening plant is connected with aggregate bin by batching sealing-tape machine, and output and the first cooling by wind of described second order screening plant regulate the input of feed bin to be connected.
In technique scheme, described inertial vibrating feeder and pneumatic arc gate-type batcher have two groups, a described aggregate sealing-tape machine, No. two aggregate sealing-tape machines, No. three aggregate sealing-tape machines, single order screening plant, first cooling by wind regulates feed bin, No. five aggregate sealing-tape machines, concrete batching and mixing plant, a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines, chute and No. four finished sand sealing-tape machines are two, and described No. four aggregate sealing-tape machines and second order screening plant are four, often organize inertial vibrating feeder corresponding aggregate sealing-tape machine respectively, , No. two aggregate sealing-tape machines, , No. three aggregate sealing-tape machines, a single order screening plant, article two, No. four aggregate sealing-tape machines, two second order screening plants, a first cooling by wind regulates feed bin, , No. five aggregate sealing-tape machines and a concrete batching and mixing plant, often organizes pneumatic arc gate-type batcher corresponding finished sand sealing-tape machine respectively, , No. two finished sand sealing-tape machines, , No. three finished sand sealing-tape machines, a chute, , No. four finished sand sealing-tape machines and a concrete batching and mixing plant, described aggregate bin entirety is in herringbone, the herringbone top of described aggregate bin is the input be connected with the output of batching sealing-tape machine, and two outputs bottom described aggregate bin herringbone are connected with two chutes respectively.
In technique scheme, a described aggregate sealing-tape machine comprises a No. one aggregate sealing-tape machine and a No. two aggregate sealing-tape machine, described No. two aggregate sealing-tape machines comprise the one No. two aggregate sealing-tape machine and the two No. two aggregate sealing-tape machine, described No. three aggregate sealing-tape machines comprise the one No. three aggregate sealing-tape machine and the two No. three aggregate sealing-tape machine, and described No. four aggregate sealing-tape machines comprise the one No. four aggregate sealing-tape machine, two No. four aggregate sealing-tape machine, three No. four aggregate sealing-tape machine and the four No. four aggregate sealing-tape machine, described No. five aggregate sealing-tape machines comprise the one No. five aggregate sealing-tape machine and the two No. five aggregate sealing-tape machine, described one group of inertial vibrating feeder, a No. one aggregate sealing-tape machine, one No. two aggregate sealing-tape machine, one No. three aggregate sealing-tape machine, a single order screening plant, one No. four aggregate sealing-tape machine, two No. four aggregate sealing-tape machine, two second order screening plants, a first cooling by wind regulates feed bin, one No. five aggregate sealing-tape machine and a concrete batching and mixing plant form a coarse aggregate conveying circuit, another group inertial vibrating feeder described, a No. two aggregate sealing-tape machine, two No. two aggregate sealing-tape machine, two No. three aggregate sealing-tape machine, another single order screening plant, three No. four aggregate sealing-tape machine, four No. four aggregate sealing-tape machine, two second order screening plants, another first cooling by wind regulates feed bin, two No. five aggregate sealing-tape machine and another concrete batching and mixing plant form another coarse aggregate conveying circuit, a described finished sand sealing-tape machine comprises a No. one finished sand sealing-tape machine and a No. two finished sand sealing-tape machine, described No. two finished sand sealing-tape machines comprise the one No. two finished sand sealing-tape machine and the two No. two finished sand sealing-tape machine, described No. three finished sand sealing-tape machines comprise the one No. three finished sand sealing-tape machine and the two No. three finished sand sealing-tape machine, described No. four finished sand sealing-tape machines comprise the one No. four finished sand sealing-tape machine and the two No. four finished sand sealing-tape machine, described one group of pneumatic arc gate-type batcher, a No. one finished sand sealing-tape machine, one No. two finished sand sealing-tape machine, one No. three finished sand sealing-tape machine, a chute, one No. four finished sand sealing-tape machine and a concrete batching and mixing plant form a finished sand conveying circuit, and described another organizes pneumatic arc gate-type batcher, a No. two finished sand sealing-tape machine, two No. two finished sand sealing-tape machine, two No. three finished sand sealing-tape machine, another chute, two No. four finished sand sealing-tape machine and another concrete batching and mixing plant form another finished sand conveying circuit, and two outputs bottom described aggregate bin herringbone are connected with the input of the two No. four finished sand sealing-tape machine with the one No. four finished sand sealing-tape machine respectively.
In technique scheme, described single order screening plant is Double-layer circular vibration screen, and described second order screening plant is circular shale shaker.
In technique scheme, often organizing inertial vibrating feeder is 12, and often organizing pneumatic arc gate-type batcher is 6.
The principle being less than 5mm fine aggregate re-use device in concrete production of the present invention is: cancel for screw sand washer, the elephant trunk of φ 400mm and a series of equipment thereafter that the Double-layer circular vibration screen of single order screening is divided in former screening plant, comprising sequence number in accompanying drawing 1 is the equipment of 7 ~ 15; Change on the chute below sand tank and aggregate bin be set, 5mm fine aggregate will be less than and directly utilize sealing-tape machine to transfer to this aggregate bin, by domination set hopper discharge quantity, 5mm fine aggregate will be less than and mix with finished sand by a certain percentage, after enter concrete batching and mixing plant.
Be less than 5mm fine aggregate after testing, generally modulus of fineness is about 3.5, only have pole special circumstances (as meeting rain drop erosion by chance) to reach maximum 4.25, do not meet the requirement of finished sand modulus of fineness 2.4-2.8, therefore consider it to be admixed to by a certain percentage in finished sand.Be determined by experiment the mix proportions being less than 5mm fine aggregate, now choose one group of typical data and be described, see attached list 1:
Subordinate list 1 finished sand fusion rejected material modulus of fineness Experiment Result table
Finished sand modulus of fineness code requirement is 2.4 ~ 2.8, therefore the finished product sand sample that three groups of moduluss of fineness are respectively 2.48,2.52,2.73 is chosen, respectively fusion different proportion be less than 5mm fine aggregate sample, detect fusion and be less than the sample modulus of fineness after 5mm fine aggregate sample and content of stone powder (content of stone powder designing requirement is≤16%).From subordinate list 1, if former finished product sand sample modulus of fineness is 2.48, at most can fusion 30% be less than 5mm fine aggregate sample; If former finished product sand sample modulus of fineness is 2.52, at most can fusion 25% be less than 5mm fine aggregate sample; If former finished product sand sample modulus of fineness is 2.73, at most can fusion 5% be less than 5mm fine aggregate sample.
In system operation, finding by detecting, being less than 5mm fine aggregate sample and accounting for 3% of coarse aggregate total amount.314.3 ten thousand m have been used at present according to certain large hydraulic engineering
3concrete calculates, the use amount of coarse aggregate is about 493.1 ten thousand t, the use amount of finished sand is about 179.7 ten thousand t, being less than 5mm fine aggregate sample is 14.8 ten thousand t, through converting, be less than 5mm fine aggregate sample and account for 8.2% of finished sand total amount, therefore, the 5mm fine aggregate sample that is less than that system can be produced all mixes in finished sand and is used for concrete mixing.By repeated detection, the finished sand modulus of fineness maximum that fusion is less than 5mm fine aggregate sample is 2.78, meets specification and contract to the requirement of fine aggregate indices; And by the detection data tracking of nearly 2 years statistics, finished product concrete construction quality meets design requirement, coarse aggregate institute after single order screening plant and the screening of second order screening plant produces and is less than 5mm fine aggregate and recycles application of succeeding.
Be less than 5mm fine aggregate re-use device in concrete production of the present invention, there is following beneficial effect:
One, economic benefit
314.3 ten thousand m have been used at present by certain large hydraulic engineering
3concrete calculates, and is less than 5mm fine aggregate and is about 14.8 ten thousand t.Be less than 5mm fine aggregate to this part to recycle, its economic benefit is embodied in following five aspects:
(1) civil engineering, the equipment & installation cost of sewage disposal system is saved
The civil engineering costs of sewage disposal system is 136.84 ten thousand yuan;
The cost of equipment of sewage disposal system, comprising sequence number in accompanying drawing 1 is the equipment of 7 ~ 15, and each equipment unit price and quantity are in table 2, and the installation cost of sewage disposal system adds up to 32.59 ten thousand yuan;
The installation fee of sewage disposal system is 87.94 ten thousand yuan;
Therefore, civil engineering, the equipment & installation cost accounting 257.37 ten thousand yuan of sewage disposal system is saved.
The installation cost of table 2 sewage disposal system
| Sequence number | Device name and specification | Unit price (unit/platform) | Quantity (platform) | Total price (unit) |
| 7 | Screw sand washer FG15 | 1864.83 | 2 | 3729.66 |
| 8 | Mud submersible sewage pump | 3690 | 4 | 14760 |
| 9 | Extra-high turbid desanding preliminary sedimentation device XJYL-300 | 76036.25 | 1 | 76036.25 |
| 10 | Water purifier XZQJ-100 | 59191.19 | 3 | 177573.6 |
| 11 | Automatic medicament feeding machine XJFG-11 | 1704.64 | 1 | 1704.64 |
| 12 | Clarified water pump | 2380 | 2 | 4760 |
| 13 | Rejected material aggregate bin 15M3 | 38891.25 | 1 | 38891.25 |
| 14 | Water-ring vacuum pump | 829.2 | 2 | 1658.4 |
| 15 | Disc type vacuum filter GP60 | 3372.05 | 2 | 6744.1 |
| Add up to | 325857.9 |
(2) operation of sewage disposal system and maintenance expense is saved
High line concrete system operation of sewage disposal system and maintenance expense are 91676.73 yuan/month, to run calculating in 37 months, amount to and reduce expenses 339.2 ten thousand yuan.
(3) the clear water expense needed for coarse aggregate rinsed is saved
The former screening plant of certain large hydraulic engineering need per hour supplement clear water amount 100t, and running time is the 500h/ month, and clear water unit price is 0.7 yuan/t, to run calculating in 37 months, save water rate 129.5 ten thousand yuan altogether.
(4) waste takes, and clears up artificial, the material and machinery expenses that expend needed for the recycling sand of this part
Waste unit price is 15.72 yuan/t, and recycling sand is totally 14.8 ten thousand t, and can save waste expense is altogether 232.66 ten thousand yuan.
(5) fee of material with the finished sand of rejected material equivalent has been saved
Save finished sand about 14.8 ten thousand t, unit price 33.88 yuan/t as agreed, save finished sand cost about 501.42 ten thousand yuan.
It can thus be appreciated that by recycling the recycling sand of this part, amount to saving 1460.15 ten thousand yuan, on average every cube of concrete can save 4.65 yuan, and economic benefit is very considerable.
Two, environmental benefit
The solid waste material of 14.8 ten thousand t is recycled, has fully practiced the theory of " sustainable development ", for tremendous contribution is made in environmental protection.
What is more important, the present invention correct for the prejudice having become common recognition in industry, for production concrete in engineering provides new thinking.
Accompanying drawing explanation
Fig. 1 is the structural representation of coarse aggregate and finished sand production equipment in existing concrete production;
Fig. 2 is the structural representation being less than 5mm fine aggregate re-use device in concrete production of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, but this embodiment should not be construed as limitation of the present invention.
The coarse aggregate of existing concrete production application in Fig. 1 and the existing description in the introduction of the structure of finished sand production equipment, do not repeat them here.
See Fig. 2, 5mm fine aggregate re-use device is less than in concrete production of the present invention, comprise the charging sealing-tape machine G1 be connected with Preservation for Aggregate Production System, described charging sealing-tape machine G1 output is respectively equipped with coarse aggregate tank 1-1 and sand tank 1-2, the output of described coarse aggregate tank 1-1 is provided with inertial vibrating feeder 2, described inertial vibrating feeder 2 output is successively by an aggregate sealing-tape machine, No. two aggregate sealing-tape machines are connected with screening plant with No. three aggregate sealing-tape machines, the output of described screening plant is provided with first cooling by wind and regulates feed bin 4, described first cooling by wind regulates feed bin 4 to be connected with concrete batching and mixing plant 16 by No. five aggregate sealing-tape machines, the output of described sand tank 1-2 is provided with pneumatic arc gate-type batcher 3, described pneumatic arc gate-type batcher 3 is successively by a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines are connected with concrete batching and mixing plant 16 with No. four finished sand sealing-tape machines, the slag-drip opening of described screening plant is provided with batching sealing-tape machine L1, the output of described batching sealing-tape machine L1 is provided with aggregate bin 17, described aggregate bin 17 is located on the chute 18 between No. three finished sand sealing-tape machines and No. four finished sand sealing-tape machines.
Described screening plant comprises single order screening plant and second order screening plant, described single order screening plant output be connected with the input of second order screening plant by No. four aggregate sealing-tape machines, the slag-drip opening of described single order screening plant is connected with aggregate bin 17 by batching sealing-tape machine L1, and output and the first cooling by wind of described second order screening plant regulate the input of feed bin 4 to be connected.Described single order screening plant is Double-layer circular vibration screen 5, and described second order screening plant is circular shale shaker 6.
Described inertial vibrating feeder 2 and pneumatic arc gate-type batcher 3 have two groups, and often organizing inertial vibrating feeder 2 is 12, and often organizing pneumatic arc gate-type batcher 3 is 6.A described aggregate sealing-tape machine, No. two aggregate sealing-tape machines, No. three aggregate sealing-tape machines, single order screening plant, first cooling by wind regulates feed bin 4, No. five aggregate sealing-tape machines, concrete batching and mixing plant 16, a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines, chute 18 and No. four finished sand sealing-tape machines are two, and described No. four aggregate sealing-tape machines and second order screening plant are four, often organize inertial vibrating feeder 2 corresponding aggregate sealing-tape machine respectively, , No. two aggregate sealing-tape machines, , No. three aggregate sealing-tape machines, a single order screening plant, article two, No. four aggregate sealing-tape machines, two second order screening plants, a first cooling by wind regulates feed bin 4, , No. five aggregate sealing-tape machines and a concrete batching and mixing plant 16, often organizes pneumatic arc gate-type batcher 3 corresponding finished sand sealing-tape machine respectively, , No. two finished sand sealing-tape machines, , No. three finished sand sealing-tape machines, a chute 18, , No. four finished sand sealing-tape machines and a concrete batching and mixing plant 16, described aggregate bin 17 entirety is in herringbone, the herringbone top of described aggregate bin 17 is the input be connected with the output of batching sealing-tape machine L1, and two outputs bottom described aggregate bin 17 herringbone are connected with two chutes 18 respectively.
A described aggregate sealing-tape machine comprises a No. one aggregate sealing-tape machine G1-1 and No. two aggregate sealing-tape machine G1-2, described No. two aggregate sealing-tape machines comprise the one No. two aggregate sealing-tape machine G2-1 and the two No. two aggregate sealing-tape machine G2-2, described No. three aggregate sealing-tape machines comprise the one No. three aggregate sealing-tape machine G3-1 and the two No. three aggregate sealing-tape machine G3-2, and described No. four aggregate sealing-tape machines comprise the one No. four aggregate sealing-tape machine G4-1, two No. four aggregate sealing-tape machine G4-2, three No. four aggregate sealing-tape machine G4-3 and the four No. four aggregate sealing-tape machine G4-4, described No. five aggregate sealing-tape machines comprise the one No. five aggregate sealing-tape machine G5-1 and the two No. five aggregate sealing-tape machine G5-2, described one group of inertial vibrating feeder 2, a No. one aggregate sealing-tape machine G1-1, one No. two aggregate sealing-tape machine G2-1, one No. three aggregate sealing-tape machine G3-1, a single order screening plant, first quadravalence aggregate sealing-tape machine G4-1, two No. four aggregate sealing-tape machine G4-2, two second order screening plants, a first cooling by wind regulates feed bin 4, an one No. five aggregate sealing-tape machine G5-1 and concrete batching and mixing plant 16 forms a coarse aggregate conveying circuit, another group inertial vibrating feeder 2 described, a No. two aggregate sealing-tape machine G1-2, two No. two aggregate sealing-tape machine G2-2, two No. three aggregate sealing-tape machine G3-2, another single order screening plant, three No. four aggregate sealing-tape machine G4-3, four No. four aggregate sealing-tape machine G4-4, two second order screening plants, another first cooling by wind regulates feed bin 4, two No. five aggregate sealing-tape machine G5-2 and another concrete batching and mixing plant 16 form another coarse aggregate conveying circuit, a described finished sand sealing-tape machine comprises a No. one finished sand sealing-tape machine S1-1 and No. two finished sand sealing-tape machine S1-2, described No. two finished sand sealing-tape machines comprise the one No. two finished sand sealing-tape machine S2-1 and the two No. two finished sand sealing-tape machine S2-2, described No. three finished sand sealing-tape machines comprise the one No. three finished sand sealing-tape machine S3-1 and the two No. three finished sand sealing-tape machine S3-2, described No. four finished sand sealing-tape machines comprise the one No. four finished sand sealing-tape machine S4-1 and the two No. four finished sand sealing-tape machine S4-2, described one group of pneumatic arc gate-type batcher 3, a No. one finished sand sealing-tape machine S1-1, one No. two finished sand sealing-tape machine S2-1, one No. three finished sand sealing-tape machine S3-1, a chute 18, an one No. four finished sand sealing-tape machine S4-1 and concrete batching and mixing plant 16 forms a finished sand conveying circuit, and described another organizes pneumatic arc gate-type batcher 3, a No. two finished sand sealing-tape machine S1-2, two No. two finished sand sealing-tape machine S2-2, two No. three finished sand sealing-tape machine S3-2, another chute 18, two No. four finished sand sealing-tape machine S4-2 and another concrete batching and mixing plant 16 form another finished sand conveying circuit, and two outputs bottom described aggregate bin 17 herringbone are connected with the input of the two No. four finished sand sealing-tape machine S4-2 with the one No. four finished sand sealing-tape machine S4-1 respectively.
The principle being less than 5mm fine aggregate re-use device in concrete production of the present invention is: cancel for screw sand washer 7, the elephant trunk of φ 400mm and a series of equipment thereafter that the Double-layer circular vibration screen 5 of single order screening is divided in former screening plant, comprising sequence number in accompanying drawing 1 is the equipment of 7 ~ 15; Change on the chute 18 below sand tank 1-2 and aggregate bin 17 is set, to be less than 5mm fine aggregate directly utilizes sealing-tape machine to transfer to this aggregate bin 17, by domination set hopper 17 discharge quantity, 5mm fine aggregate will be less than and mix with finished sand by a certain percentage, after enter concrete batching and mixing plant 16.
Be less than 5mm fine aggregate after testing, generally modulus of fineness is about 3.5, only have pole special circumstances (as meeting rain drop erosion by chance) to reach maximum 4.25, do not meet the requirement of finished sand modulus of fineness 2.4-2.8, therefore consider it to be admixed to by a certain percentage in finished sand.Be determined by experiment the mix proportions being less than 5mm fine aggregate, now choose one group of typical data and be described, see attached list 1:
Subordinate list 1 finished sand fusion rejected material modulus of fineness Experiment Result table
Finished sand modulus of fineness code requirement is 2.4 ~ 2.8, therefore the finished product sand sample that three groups of moduluss of fineness are respectively 2.48,2.52,2.73 is chosen, respectively fusion different proportion be less than 5mm fine aggregate sample, detect fusion and be less than the sample modulus of fineness after 5mm fine aggregate sample and content of stone powder (content of stone powder designing requirement is≤16%).From subordinate list 1, if former finished product sand sample modulus of fineness is 2.48, at most can fusion 30% be less than 5mm fine aggregate sample; If former finished product sand sample modulus of fineness is 2.52, at most can fusion 25% be less than 5mm fine aggregate sample; If former finished product sand sample modulus of fineness is 2.73, at most can fusion 5% be less than 5mm fine aggregate sample.
In system operation, finding by detecting, being less than 5mm fine aggregate sample and accounting for 3% of coarse aggregate total amount.314.3 ten thousand m have been used at present according to certain large hydraulic engineering
3concrete calculates, the use amount of coarse aggregate is about 493.1 ten thousand t, the use amount of finished sand is about 179.7 ten thousand t, being less than 5mm fine aggregate sample is 14.8 ten thousand t, through converting, be less than 5mm fine aggregate sample and account for 8.2% of finished sand total amount, therefore, the 5mm fine aggregate sample that is less than that system can be produced all mixes in finished sand and is used for concrete mixing.By repeated detection, the finished sand modulus of fineness maximum that fusion is less than 5mm fine aggregate sample is 2.78, meets specification and contract to the requirement of fine aggregate indices; And by the detection data tracking of nearly 2 years statistics, finished product concrete construction quality meets design requirement, coarse aggregate institute after single order screening plant and the screening of second order screening plant produces and is less than 5mm fine aggregate and recycles application of succeeding.
What is more important, the present invention correct for the prejudice having become common recognition in industry, for production concrete in engineering provides new thinking.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
The content be not described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (6)
1. be less than 5mm fine aggregate re-use device in a concrete production, it is characterized in that: comprise the charging sealing-tape machine (G1) be connected with Preservation for Aggregate Production System, described charging sealing-tape machine (G1) output is respectively equipped with coarse aggregate tank (1-1) and sand tank (1-2), the output of described coarse aggregate tank (1-1) is provided with inertial vibrating feeder (2), described inertial vibrating feeder (2) output is successively by an aggregate sealing-tape machine, No. two aggregate sealing-tape machines are connected with screening plant with No. three aggregate sealing-tape machines, the output of described screening plant is provided with first cooling by wind and regulates feed bin (4), described first cooling by wind regulates feed bin (4) to be connected with concrete batching and mixing plant (16) by No. five aggregate sealing-tape machines, the output of described sand tank (1-2) is provided with pneumatic arc gate-type batcher (3), described pneumatic arc gate-type batcher (3) is successively by a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines are connected with concrete batching and mixing plant (16) with No. four finished sand sealing-tape machines, the slag-drip opening of described screening plant is provided with batching sealing-tape machine (L1), the output of described batching sealing-tape machine (L1) is provided with aggregate bin (17), described aggregate bin (17) is located on the chute (18) between No. three finished sand sealing-tape machines and No. four finished sand sealing-tape machines.
2. be less than 5mm fine aggregate re-use device in concrete production according to claim 1, it is characterized in that: described screening plant comprises single order screening plant and second order screening plant, described single order screening plant output be connected with the input of second order screening plant by No. four aggregate sealing-tape machines, the slag-drip opening of described single order screening plant is connected with aggregate bin (17) by batching sealing-tape machine (L1), and output and the first cooling by wind of described second order screening plant regulate the input of feed bin (4) to be connected.
3. be less than 5mm fine aggregate re-use device in concrete production according to claim 2, it is characterized in that: described inertial vibrating feeder (2) and pneumatic arc gate-type batcher (3) have two groups, a described aggregate sealing-tape machine, No. two aggregate sealing-tape machines, No. three aggregate sealing-tape machines, single order screening plant, first cooling by wind regulates feed bin (4), No. five aggregate sealing-tape machines, concrete batching and mixing plant (16), a finished sand sealing-tape machine, No. two finished sand sealing-tape machines, No. three finished sand sealing-tape machines, chute (18) and No. four finished sand sealing-tape machines are two, and described No. four aggregate sealing-tape machines and second order screening plant are four, often organize inertial vibrating feeder (2) corresponding aggregate sealing-tape machine respectively, , No. two aggregate sealing-tape machines, , No. three aggregate sealing-tape machines, a single order screening plant, article two, No. four aggregate sealing-tape machines, two second order screening plants, a first cooling by wind regulates feed bin (4), , No. five aggregate sealing-tape machines and a concrete batching and mixing plant (16), often organizes pneumatic arc gate-type batcher (3) corresponding finished sand sealing-tape machine respectively, , No. two finished sand sealing-tape machines, , No. three finished sand sealing-tape machines, a chute (18), , No. four finished sand sealing-tape machines and a concrete batching and mixing plant (16), described aggregate bin (17) entirety is in herringbone, the herringbone top of described aggregate bin (17) is the input be connected with the output of batching sealing-tape machine (L1), and two outputs bottom described aggregate bin (17) herringbone are connected with two chutes (18) respectively.
4. be less than 5mm fine aggregate re-use device in concrete production according to claim 3, it is characterized in that: a described aggregate sealing-tape machine comprises a No. one aggregate sealing-tape machine (G1-1) and a No. two aggregate sealing-tape machine (G1-2), described No. two aggregate sealing-tape machines comprise the one No. two aggregate sealing-tape machine (G2-1) and the two No. two aggregate sealing-tape machine (G2-2), described No. three aggregate sealing-tape machines comprise the one No. three aggregate sealing-tape machine (G3-1) and the two No. three aggregate sealing-tape machine (G3-2), described No. four aggregate sealing-tape machines comprise the one No. four aggregate sealing-tape machine (G4-1), two No. four aggregate sealing-tape machine (G4-2), three No. four aggregate sealing-tape machine (G4-3) and the four No. four aggregate sealing-tape machine (G4-4), described No. five aggregate sealing-tape machines comprise the one No. five aggregate sealing-tape machine (G5-1) and the two No. five aggregate sealing-tape machine (G5-2), described one group of inertial vibrating feeder (2), a No. one aggregate sealing-tape machine (G1-1), one No. two aggregate sealing-tape machine (G2-1), one No. three aggregate sealing-tape machine (G3-1), a single order screening plant, one No. four aggregate sealing-tape machine (G4-1), two No. four aggregate sealing-tape machine (G4-2), two second order screening plants, a first cooling by wind regulates feed bin (4), one No. five aggregate sealing-tape machine (G5-1) and concrete batching and mixing plant (16) composition coarse aggregate conveying circuit, another group inertial vibrating feeder (2) described, a No. two aggregate sealing-tape machine (G1-2), two No. two aggregate sealing-tape machine (G2-2), two No. three aggregate sealing-tape machine (G3-2), another single order screening plant, three No. four aggregate sealing-tape machine (G4-3), four No. four aggregate sealing-tape machine (G4-4), two second order screening plants, another first cooling by wind regulates feed bin (4), two No. five aggregate sealing-tape machine (G5-2) and another concrete batching and mixing plant (16) form another coarse aggregate conveying circuit, a described finished sand sealing-tape machine comprises a No. one finished sand sealing-tape machine (S1-1) and a No. two finished sand sealing-tape machine (S1-2), described No. two finished sand sealing-tape machines comprise the one No. two finished sand sealing-tape machine (S2-1) and the two No. two finished sand sealing-tape machine (S2-2), described No. three finished sand sealing-tape machines comprise the one No. three finished sand sealing-tape machine (S3-1) and the two No. three finished sand sealing-tape machine (S3-2), described No. four finished sand sealing-tape machines comprise the one No. four finished sand sealing-tape machine (S4-1) and the two No. four finished sand sealing-tape machine (S4-2), described one group of pneumatic arc gate-type batcher (3), a No. one finished sand sealing-tape machine (S1-1), one No. two finished sand sealing-tape machine (S2-1), one No. three finished sand sealing-tape machine (S3-1), a chute (18), one No. four finished sand sealing-tape machine (S4-1) and concrete batching and mixing plant (16) composition finished sand conveying circuit, described another organizes pneumatic arc gate-type batcher (3), a No. two finished sand sealing-tape machine (S1-2), two No. two finished sand sealing-tape machine (S2-2), two No. three finished sand sealing-tape machine (S3-2), another chute (18), two No. four finished sand sealing-tape machine (S4-2) and another concrete batching and mixing plant (16) form another finished sand conveying circuit, two outputs bottom described aggregate bin (17) herringbone are connected with the input of the two No. four finished sand sealing-tape machine (S4-2) with the one No. four finished sand sealing-tape machine (S4-1) respectively.
5. in the concrete production according to any one of claim 2 to 4, be less than 5mm fine aggregate re-use device, it is characterized in that: described single order screening plant is Double-layer circular vibration screen (5), described second order screening plant is circular shale shaker (6).
6. be less than 5mm fine aggregate re-use device in the concrete production according to claim 3 or 4, it is characterized in that: often organizing inertial vibrating feeder (2) is 12, often organizing pneumatic arc gate-type batcher (3) is 6.
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| JP2001261405A (en) * | 2000-03-16 | 2001-09-26 | Kumagai Gumi Co Ltd | Prepacked concrete construction method using dismantled concrete |
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