CN114682481B - Preparation method of energy-saving heat-preservation high-strength concrete - Google Patents
Preparation method of energy-saving heat-preservation high-strength concrete Download PDFInfo
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- CN114682481B CN114682481B CN202210351226.0A CN202210351226A CN114682481B CN 114682481 B CN114682481 B CN 114682481B CN 202210351226 A CN202210351226 A CN 202210351226A CN 114682481 B CN114682481 B CN 114682481B
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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
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/24—Revolving drums with fixed or moving interior agitators
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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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- 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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
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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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The utility model relates to the field of concrete preparation, in particular to an energy-saving heat-preservation high-strength concrete preparation method. According to the utility model, the horizontal multi-stage screening mode is adopted to screen the aggregates, and the aggregates with thicker piles are evenly stirred when the aggregates are screened, so that the screening effect of the aggregates is improved; the problems that aggregates with a certain thickness can be accumulated in a screen mesh in the existing aggregate screening device, so that the aggregate screening is incomplete, the using effect of the aggregates at the later stage is affected and the like are solved.
Description
Technical Field
The utility model relates to the field of concrete preparation, in particular to a preparation method of energy-saving heat-preservation high-strength concrete.
Background
When the energy-saving heat-preserving high-strength concrete is prepared, aggregates with different sizes are required to be added according to the standard so as to increase the strength and workability of the concrete. Concrete aggregate is a granular material which plays a role in framework or filling in concrete, the aggregate is made of natural rock or rock through mechanical crushing and screening, and the aggregate is divided into a plurality of specifications according to the size of the aggregate, so the screening of the concrete aggregate is particularly important.
The concrete aggregate screening is generally carried out by adopting a screen, for example, china patent application No. CN202120591016.X discloses a recycled concrete aggregate processing device, and the utility model can carry out multistage screening and dust fall treatment on the concrete aggregate; and a Chinese patent with the application number of CN201710162728.8 discloses a recycled concrete aggregate screening device, which adopts a horizontal screening mode to screen aggregates and clean blocked screen holes.
The above-mentioned prior art can all carry out the screening action of aggregate, but above-mentioned technique still has following problem: firstly, when a horizontal screening mode is adopted for screening, multistage screening cannot be carried out, and aggregates with certain thickness can be piled in a screen, so that the aggregate screening is not thorough, and the using effect of the aggregates at the later stage is affected; secondly, when the sieve holes on the sieve are cleaned, only the aggregates can be cleaned into the sieve, and the aggregates with proper sizes cannot be cleaned out of the sieve; when the screen mesh is used for aggregate screening again, the conveying is not smooth, and the screening efficiency is low.
Disclosure of Invention
The technical scheme adopted by the utility model for solving the technical problems is as follows: the energy-saving heat-preservation high-strength concrete preparation method adopts a concrete aggregate screening device to carry out screening operation of concrete aggregate, the concrete aggregate screening device comprises a screening bottom plate, a main support is arranged at the top of the screening bottom plate through a support frame, one end of the main support is obliquely arranged downwards, a screening cylinder is coaxially arranged in the main support, a screening part is arranged in the screening cylinder, one side of the screening part, which is close to the downward inclination of the main support, is connected to the outer side surface of the main support, and one side of the screening part, which is close to the downward inclination of the main support, is connected with a driving assembly for driving the screening cylinder to rotate; annular grooves are formed in the two end faces of the main support, and sliding supports which are in sliding fit with the annular grooves are arranged at the two ends of the screening cylinder.
The utility model discloses a screening machine, including screening section of thick bamboo, arc screen cloth, main support section of thick bamboo, screening section of thick bamboo's lateral surface evenly is provided with the sieve mesh, is provided with the arc screen cloth between screening section of thick bamboo and the main support section of thick bamboo, and the both sides of arc screen cloth are the elastic expansion structure at the medial surface of main support section of thick bamboo is connected to the both sides of arc screen cloth, is provided with the swing portion that is used for driving arc screen cloth circulation wobbling when screening section of thick bamboo rotates between arc screen cloth and the screening section of thick bamboo, and the sieve mesh position that the main support section of thick bamboo corresponds the arc screen cloth is provided with the unloading breach.
The screening part is including connecting the screening support at main support lateral surface, and the lower extreme rotation of screening support is connected with the axis of rotation, and the lateral surface cover of axis of rotation is equipped with the supporting sleeve, and the middle part at the screening support is installed through L type connecting rod to the supporting sleeve, and the one end that the axis of rotation is located screening section of thick bamboo is installed and is dialled flat piece.
The driving assembly comprises a motor arranged on the outer side face of the main support through a motor base, an output shaft of the motor is connected with a connecting shaft through a coupling, a driving gear is arranged in the middle of the connecting shaft, a gear ring meshed with the driving gear is arranged on the outer side face of one downward-inclined end of the screening cylinder, and a transmission branched chain used for driving the rotating shaft to swing is arranged at the tail end of the connecting shaft.
The preparation method of the energy-saving heat-preserving high-strength concrete by adopting the concrete aggregate screening device comprises the following steps:
step one, crushing concrete raw materials: firstly, crushing mined sandstone or limestone by adopting a hammer crusher, and intensively storing crushed broken stone;
step two, concrete aggregate is screened once: crushed stones are conveyed to one side of a concrete aggregate screening device, which is higher in screening cylinder position, then a motor is started to enable the screening cylinder to rotate, crushed stones can be screened and conveyed through screen holes in the screening cylinder, and aggregates with larger particles can be conveyed out from one side of the screening cylinder facing downwards;
thirdly, secondarily sieving concrete aggregate: the crushed stone screened downwards by the screening cylinder is screened for the second time through the arc screen, and the rotation of the screening cylinder can drive the arc screen to swing, so that the aggregate with medium particles is screened out from one side of the main cylinder which is inclined downwards, and the aggregate with small particles is screened out from the bottom of the main cylinder, and the aggregates with three types are respectively collected separately;
and step four, concrete preparation: and mixing and stirring the cementing material, sand, the aggregate with a proper model and water according to a proportion to form the concrete.
Further, the transmission branched chain comprises a swing gear which is arranged at one end of the rotating shaft close to the screening support, one side of the swing gear is connected with a transmission rack in a meshed mode, the transmission rack is vertically and slidably connected with the screening support, the upper end of the transmission rack is connected with one end of a matched rotating rod through a pin shaft, the other end of the matched rotating rod is connected with a rotary table through a pin shaft, and the rotary table is arranged at the tail end of the connecting shaft.
Further, one end of the screening cylinder which is inclined downwards is of a flaring structure, and the screen holes on the screening cylinder are larger than those on the arc screen.
Further, the swing portion comprises a trapezoid poking body arranged on the end face of the arc-shaped screen in an elastic telescopic fit mode, a rotating poking block matched with the trapezoid poking body is arranged on the screening barrel, and the telescopic force of the trapezoid poking body is larger than that of telescopic structures on two sides of the arc-shaped screen.
Further, dial flat piece including installing at the epaxial flat bull stick that dials of rotation, dial flat board is installed to the end of flat bull stick, dials the flat board and is arc structure, dials there is certain clearance between flat board and the screening section of thick bamboo, dials the flat board side and is close to the one side that the screening section of thick bamboo leaned up and be provided with the chamfer, dials the middle part of flat board and is provided with the square groove, dials the flat board and can not contact with the clearance piece when being in the biggest swing angle.
Further, a cleaning piece is arranged on the outer side surface of one end of the supporting sleeve, which is positioned in the screening cylinder; the cleaning piece is including installing the clearance branch on supporting the cover, installs the clearance arc on the clearance branch, and one side that the clearance arc is close to screening section of thick bamboo lateral wall evenly is provided with the spring lever, installs the stripper plate on the spring lever jointly, and the stripper plate corresponds the position of screening hole on the screening section of thick bamboo and is provided with the clearance arch, and the clearance arc corresponds the clockwise one side of screening section of thick bamboo rotation direction and is provided with scrapes the frame.
Further, the inner side surface of the main support is provided with elastic hole cleaning blocks along the axial direction of the main support and corresponding to the positions of the sieve holes on the sieving cylinder, the elastic hole cleaning blocks are of conical structures, and the elastic hole cleaning blocks are located on one side of the cleaning arc plate, which corresponds to the clockwise direction of the sieving cylinder.
Further, the lower end of the extrusion plate is obliquely arranged to one side of the cleaning arc plate.
Further, the upper end of clearance arc is arranged to one side slope of screening section of thick bamboo, and clearance arc upper end and screening section of thick bamboo between the interval be greater than scrape the interval between broken frame and the screening section of thick bamboo.
Further, the support sleeve is provided with a feeding guide frame corresponding to the upward inclined end of the screening cylinder.
The utility model has the beneficial effects that: 1. according to the utility model, the horizontal multi-stage screening mode is adopted to screen the aggregates, and the aggregates with thicker piles are evenly stirred when the aggregates are screened, so that the screening effect of the aggregates is improved; the utility model can also remove the aggregate from the screen according to the size of the aggregate clamped in the sieve holes, scrape the needle-shaped aggregate, and increase the later use effect of the aggregate.
2. The shifting rotating rod can swing back and forth along with the rotating shaft, so that the shifting plate uniformly spreads the accumulated thick aggregate, incomplete screening of the aggregate caused by the accumulation of the thick aggregate is prevented, and the chamfer on the shifting plate is convenient for the accumulated thick aggregate to move to the upper side surface of the shifting plate and fall to the side surface of the screening cylinder again from the square groove of the shifting plate.
3. According to the utility model, the swing part can drive the arc-shaped screen to swing back and forth, so that medium aggregate can be comprehensively screened and conducted rightward, and the main support is provided with a blanking notch corresponding to the screen hole position of the arc-shaped screen; the small aggregate falls off from the sieve mesh of the arc screen from the blanking notch, and the sieve holes on the screening cylinder are larger than the sieve holes on the arc screen; this arrangement enables the present utility model to screen aggregate into three types of aggregate.
4. According to the utility model, when the screening cylinder rotates to the position of the cleaning protrusion, the cleaning protrusion can outwards extend aggregate in the screen holes, so that aggregate with proper size can drop onto the annular groove, when oversized aggregate cannot be ejected, the cleaning protrusion contracts under the action of the spring rod, the oversized aggregate rotates to the position of the elastic hole cleaning block along with the screening cylinder, and the elastic hole cleaning block can eject and re-drop large-particle aggregate into the screening cylinder under the action of the elastic piece of the elastic hole cleaning block.
5. When the aggregates in the sieve pores are needle-shaped, the scraping frame scrapes the needle-shaped aggregates, so that the influence on the whole use effect of the aggregates in the later period of the needle-shaped aggregates is prevented.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a flow chart of the method for preparing the energy-saving heat-preserving high-strength concrete.
Fig. 2 is a first schematic structural view of the concrete aggregate screening apparatus of the present utility model.
Fig. 3 is a second schematic structural view of the concrete aggregate screening apparatus of the present utility model.
Fig. 4 is a schematic view of a third construction of the concrete aggregate screening apparatus of the present utility model.
Fig. 5 is a schematic view of a first construction of the concrete aggregate screening apparatus of the present utility model after removal of the screening floor.
Fig. 6 is a schematic view of a second construction of the concrete aggregate screening apparatus of the present utility model after removal of the screening floor.
Fig. 7 is a cross-sectional view of the structure of the main support, the screen drum and the screen member of the concrete aggregate screening apparatus of the present utility model.
Fig. 8 is a plan view of the main support, screen drum and screen assembly of the concrete aggregate screening apparatus of the present utility model.
Fig. 9 is a schematic view of the aggregate discharging position of the concrete aggregate screening device of the present utility model.
In the figure: 1. a screening bottom plate; 2. a main support; 3. a sieving cylinder; 4. a screening element; 5. a drive assembly; 21. arc-shaped screen mesh; 22. a sliding support; 23. a trapezoidal toggle body; 24. rotating the shifting block; 41. a screening bracket; 42. a rotating shaft; 43. a support sleeve; 44. a leveling member; 441. leveling the rotating rod; 442. a flat plate; 45. cleaning the piece; 451. cleaning the supporting rod; 452. cleaning the arc-shaped plate; 453. a spring rod; 454. an extrusion plate; 455. cleaning the bulge; 456. scraping the frame; 457. elastic hole cleaning block; 46. a feeding guide frame; 51. a motor; 52. a connecting shaft; 53. a drive gear; 54. a drive branched chain; 541. a swing gear; 542. a drive rack; 543. matching with a rotating rod; 544. a turntable.
Detailed Description
Embodiments of the present utility model are described in detail below. The following examples are illustrative only and are not to be construed as limiting the utility model. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product.
Referring to fig. 2-4, the energy-saving heat-preserving high-strength concrete preparation method adopts a concrete aggregate screening device to screen concrete aggregate, the concrete aggregate screening device comprises a screening bottom plate 1, a main support 2 is arranged at the top of the screening bottom plate 1 through a supporting frame, one end of the main support 2 is arranged in a downward inclined mode, one end of the screening cylinder 3 in a downward inclined mode is of a flaring structure, the screening cylinder 3 is coaxially arranged in the main support 2, sieve holes are uniformly formed in the outer side face of the screening cylinder 3, an arc-shaped screen 21 is arranged between the screening cylinder 3 and the main support 2, two sides of the arc-shaped screen 21 are connected to the inner side face of the main support 2, a screening part 4 is arranged in the screening cylinder 3, one side, close to the downward inclined side of the main support 2, of the screening part 4 is connected with a driving assembly 5 for driving the screening cylinder 3 to rotate; the two end faces of the main support 2 are respectively provided with an annular groove, two ends of the screening cylinder 3 are respectively provided with a sliding support 22 which is in sliding fit with the annular grooves, the annular grooves are matched with the sliding supports 22, the positions of the screening cylinder 3 can be limited and supported, the crushed stone can be subjected to multistage screening in a horizontal screening mode, the screening cylinder 3 is driven to rotate through the driving component 5, the inclined screening cylinder 3 is enabled to conduct screening action and guide the stone, the screening component 4 can uniformly spread the stone in the screening cylinder 3 so that the stone can be screened, large aggregate after screening is led out from the flaring structure of the screening cylinder 3, medium aggregate is led out from the right side of the main support 2, small aggregate is led out from the main support 2, and therefore multistage screening of the aggregate is completed.
Referring to fig. 2, 4 and 9, two sides of the arc-shaped screen 21 are of elastic telescopic structures, a swinging part for driving the arc-shaped screen 21 to swing circularly when the screening cylinder 3 rotates is arranged between the arc-shaped screen 21 and the screening cylinder 3, and the arc-shaped screen 21 can be driven to swing back and forth through the swinging part, so that medium aggregate can be comprehensively screened and conducted rightwards, and a blanking notch is arranged at the position, corresponding to the sieve pore of the arc-shaped screen 21, of the main support 2; the small aggregate falls from the blanking notch after being sieved by the arc-shaped screen 21, and the sieve holes on the sieving cylinder 3 are larger than the sieve holes on the arc-shaped screen 21; the arrangement enables the aggregate to be screened into three types of aggregates, the feeding guide frame 46 is arranged at one end of the supporting sleeve 43, which is inclined upwards corresponding to the screening barrel 3, and when stones to be screened are led in from the left end of the screening barrel 3, the feeding guide frame 46 can disperse the stones, so that the stones can be uniformly conducted in the screening barrel 3, and the screening uniformity of the stones is improved.
Referring to fig. 5, the swinging part includes a trapezoid poking body 23 arranged on the end surface of the arc screen 21 in an elastic telescopic fit manner, a rotating poking block 24 matched with the trapezoid poking body 23 is arranged on the screening cylinder 3, the telescopic force of the trapezoid poking body 23 is larger than that of telescopic structures at two sides of the arc screen 21, when the screening cylinder 3 rotates to screen stones, the rotating poking block 24 can be in contact with the trapezoid poking body 23, so that the screening cylinder 3 can continuously rotate to drive the arc screen 21 to rotate backwards through the trapezoid poking body 23, after the front side of the arc screen 21 is contracted to a certain extent, the telescopic force of the telescopic structure at the front side of the arc screen 21 is larger than that of the trapezoid poking body 23, so that the trapezoid poking body 23 is contracted, the trapezoid poking body 23 is separated from the rotating poking block 24 when the screening cylinder 3 continuously rotates, and at the moment, the arc screen 21 can shake forwards and backwards under the action of telescopic structures at two ends of the arc screen 21, and medium aggregate screening and conveying actions are completed.
Referring to fig. 3-4, in order to increase the uniformity of aggregate screening by the screening tube 3 and prevent accumulation during aggregate screening, the aggregate is leveled by adopting the screening component 4, the screening component 4 comprises a screening support 41 connected to the outer side surface of the main support 2, the lower end of the screening support 41 is rotatably connected with a rotating shaft 42, the outer side surface of the rotating shaft 42 is sleeved with a supporting sleeve 43, the supporting sleeve 43 is installed in the middle of the screening support 41 through an L-shaped connecting rod, one end of the rotating shaft 42, which is positioned in the screening tube 3, is provided with a leveling piece 44, the rotating shaft 42 can rotate in a rotating fit manner, the supporting sleeve 43 is fixedly connected to the screening support 41 so that the supporting sleeve 43 cannot rotate, and the leveling piece 44 can uniformly level the aggregate in the screening tube 3.
Referring to fig. 2-3, the driving component 5 includes a motor 51 installed on the outer side of the main support 2 through a motor base, the motor 51 is a self-locking motor, an output shaft of the motor 51 is connected with a connecting shaft 52 through a coupling, a driving gear 53 is installed in the middle of the connecting shaft 52, a gear ring meshed with the driving gear 53 is disposed on the outer side of one end of the screening cylinder 3 which is inclined downwards, a transmission branched chain 54 for driving the rotating shaft 42 to swing is disposed at the tail end of the connecting shaft 52, the driving component 5 can control the screening cylinder 3 to rotate, specifically, the driving gear 53 on the connecting shaft 52 is driven to rotate through the rotation of the motor 51, and the driving gear 53 drives the screening cylinder 3 to rotate backwards through the gear ring.
Referring to fig. 6, in order to uniformly stir aggregate in a screening drum 3 by a stirring piece 44, a transmission branched chain 54 is provided to enable the stirring piece 44 to reciprocate back and forth, the transmission branched chain 54 comprises a swing gear 541 installed at one end of a rotating shaft 42 near a screening support 41, one side of the swing gear 541 is in meshed connection with a transmission rack 542, the transmission rack 542 is vertically and slidingly connected with the screening support 41, the upper end of the transmission rack 542 is connected with one end of a matching rotating rod 543 through a pin shaft, the other end of the matching rotating rod 543 is connected with a turntable 544 through a pin shaft, the turntable 544 is installed at the tail end of a connecting shaft 52, and when a motor 51 drives the screening drum 3 to rotate backwards, the transmission rack 542 and the screening support 41 are only in vertical sliding connection, so that the turntable 544 can drive the transmission rack 542 to reciprocate up and down, and the transmission rack 542 drives the rotating shaft 42 to oscillate back and forth under the action of the swing gear 541.
Referring to fig. 7, the leveling member 44 includes a leveling rod 441 mounted on the rotation shaft 42, a leveling plate 442 is mounted at the end of the leveling rod 441, the leveling plate 442 has an arc structure, a certain gap exists between the leveling plate 442 and the screening drum 3, a chamfer is disposed on one side of the side surface of the leveling plate 442, which is close to the upward inclination of the screening drum 3, a square groove is disposed in the middle of the leveling plate 442, the leveling plate 442 is not contacted with the cleaning member 45 when at the maximum swing angle, the leveling rod 441 can swing back and forth along with the rotation shaft 42, so that the leveling plate 442 spreads the aggregate which is stacked too thick, so as to prevent incomplete screening caused by the aggregate stacking, and the chamfer on the leveling plate 442 is convenient for the aggregate which is stacked too thick to move to the upper side surface thereof and fall down to the side surface of the screening drum 3 again from the square groove of the leveling plate 442.
Referring to fig. 7 and 8, in order to prevent the screen holes on the screening cylinder 3 from being blocked, a cleaning member 45 is provided for cleaning the screen holes on the screening cylinder 3, and a cleaning member 45 is mounted on the outer side surface of one end of the supporting sleeve 43, which is positioned in the screening cylinder 3; the cleaning member 45 comprises a cleaning supporting rod 451 arranged on the supporting sleeve 43, a cleaning arc plate 452 is arranged on the cleaning supporting rod 451, a spring rod 453 is uniformly arranged on one side, close to the side wall of the screening cylinder 3, of the cleaning arc plate 452, a squeezing plate 454 is arranged on the spring rod 453 in a common mode, cleaning protrusions 455 are arranged on the squeezing plate 454 corresponding to positions of screening holes on the screening cylinder 3, a scraping frame 456 is arranged on one side, clockwise to the cleaning arc plate 452, of the corresponding screening cylinder 3, the cleaning supporting rod 451 is arranged on the supporting sleeve 43, the cleaning supporting rod 451 cannot rotate, when the screening cylinder 3 rotates to the position of the cleaning protrusions 455, the cleaning protrusions 455 can outwards push aggregates in the screening holes, so that aggregates with proper sizes can fall onto the annular groove, the cleaning protrusions 455 shrink under the action of the spring rod 453 when the oversized aggregates cannot be ejected, the cleaning protrusions 455 are prevented from blocking the screening cylinder 3, and when the aggregates in the screening holes are in needle shape, the scraping frame 456 scrapes the needle-shaped aggregates, and the whole using effect of the aggregates is prevented from being influenced in the later stage.
Referring to fig. 8, the lower end of the pressing plate 454 is inclined toward one side of the cleaning arc plate 452, and this arrangement enables the pressing plate 454 to guide large-sized aggregate, preventing the large-sized aggregate from being abutted against the cleaning protrusion 455.
Referring to fig. 7, the inner side surface of the main support 2 is provided with an elastic hole cleaning block 457 along the axial direction of the main support and corresponding to the positions of the sieve holes on the sieving cylinder 3, the elastic hole cleaning block 457 is of a conical structure, the elastic hole cleaning block 457 is located at one side of the cleaning arc plate 452 corresponding to the clockwise direction of the rotating direction of the sieving cylinder 3, when oversized aggregate cannot be ejected by the cleaning protrusion 455, the oversized aggregate rotates to the position of the elastic hole cleaning block 457 along with the sieving cylinder 3, and the elastic hole cleaning block 457 can eject and re-fall large-particle aggregate into the sieving cylinder 3 under the action of an elastic piece of the elastic hole cleaning block 457 and can automatically shrink along with the rotation of the sieving cylinder 3, so that the rotation of the sieving cylinder 3 is not affected.
Referring to fig. 7, the upper end of the cleaning arc plate 452 is obliquely arranged to one side of the sieving cylinder 3, and the distance between the upper end of the cleaning arc plate 452 and the sieving cylinder 3 is larger than the distance between the scraping frame 456 and the sieving cylinder 3, so that when large-particle aggregate falls into the sieving cylinder 3, the inclined structure at the upper end of the cleaning arc plate 452 can guide the large-particle aggregate, and the large-particle aggregate is prevented from falling between the cleaning arc plate 452 and the extruding plate 454.
Referring to fig. 1 and 9, the method for preparing the energy-saving heat-preserving high-strength concrete by adopting the concrete aggregate screening device comprises the following steps:
step one, crushing concrete raw materials: firstly, crushing mined sandstone or limestone by adopting a hammer crusher, and intensively storing crushed broken stone;
step two, concrete aggregate is screened once: crushed stones are transmitted to one side of the concrete aggregate screening device, which is higher than the screening cylinder 3, then the motor 51 is started, so that the screening cylinder 3 rotates, crushed stones can be screened and conveyed through the sieve holes on the screening cylinder 3, larger-particle aggregates can be conveyed out from the right side of the screening cylinder 3, and during screening of the screening cylinder 3, the leveling rotating rod 441 can swing back and forth along with the rotating shaft 42, so that the leveling plates 442 uniformly spread the accumulated aggregates, and the screening effect of the aggregates is improved; when the screening cylinder 3 rotates to the position of the cleaning protrusion 455, the cleaning protrusion 455 can push the aggregate in the screen holes outwards, so that the aggregate with proper size can drop onto the annular groove, when the oversized aggregate cannot be pushed out, the cleaning protrusion 455 contracts under the action of the spring rod 453, the oversized aggregate rotates to the position of the elastic cleaning block 457 along with the screening cylinder 3, and the elastic cleaning block 457 can push the large-particle aggregate out and drop into the screening cylinder 3 again under the action of the elastic part of the elastic cleaning block 457;
thirdly, secondarily sieving concrete aggregate: the crushed stone screened downwards by the screening cylinder 3 is screened for the second time by the arc screen 21, and the rotation of the screening cylinder 3 drives the arc screen 21 to shake back and forth by the swinging part, so that the aggregate with medium particles is screened out from one side of the main support 2 which inclines downwards, and the aggregate with small particles is screened out from the bottom of the main support 2, and the aggregates with three types are respectively collected separately;
and step four, concrete preparation: and mixing and stirring the cementing material, sand, the aggregate with a proper model and water according to a proportion to form the concrete.
While embodiments of the present utility model have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model, which is also intended to be covered by the present utility model.
Claims (10)
1. The utility model provides an energy-conserving heat preservation high strength concrete preparation method, this energy-conserving heat preservation high strength concrete preparation method adopts concrete aggregate screening plant to carry out the screening operation of concrete aggregate, and concrete aggregate screening plant includes screening bottom plate (1), and main support (2) are installed through the support frame in the top of screening bottom plate (1), and the one end of main support (2) is arranged its characterized in that downwards slope: a screening cylinder (3) is coaxially arranged in the main cylinder (2), a screening part (4) is arranged in the screening cylinder (3), one side, close to the main cylinder (2), of the screening part (4) which is inclined downwards is connected to the outer side surface of the main cylinder (2), and one side, close to the main cylinder (2), of the screening part (4) which is inclined downwards is connected with a driving assembly (5) which drives the screening cylinder (3) to rotate; annular grooves are formed in the two end faces of the main support (2), and sliding supports (22) which are in sliding fit with the annular grooves are arranged at the two ends of the screening cylinder (3);
the screening machine is characterized in that screen holes are uniformly formed in the outer side face of the screening cylinder (3), an arc-shaped screen (21) is arranged between the screening cylinder (3) and the main support (2), two sides of the arc-shaped screen (21) are connected to the inner side face of the main support (2), two sides of the arc-shaped screen (21) are of elastic telescopic structures, a swinging part for driving the arc-shaped screen (21) to swing circularly when the screening cylinder (3) rotates is arranged between the arc-shaped screen (21) and the screening cylinder (3), and blanking notches are formed in the positions, corresponding to the screen holes of the arc-shaped screen (21), of the main support (2);
the screening component (4) comprises a screening bracket (41) connected to the outer side surface of the main support (2), a rotating shaft (42) is rotatably connected to the lower end of the screening bracket (41), a supporting sleeve (43) is sleeved on the outer side surface of the rotating shaft (42), the supporting sleeve (43) is installed in the middle of the screening bracket (41) through an L-shaped connecting rod, and a leveling piece (44) is installed at one end of the rotating shaft (42) located in the screening cylinder (3);
the driving assembly (5) comprises a motor (51) arranged on the outer side surface of the main support (2) through a motor base, an output shaft of the motor (51) is connected with a connecting shaft (52) through a coupler, a driving gear (53) is arranged in the middle of the connecting shaft (52), a gear ring meshed with the driving gear (53) is arranged on the outer side surface of one inclined downward end of the screening cylinder (3), and a transmission branched chain (54) used for driving the rotating shaft (42) to swing is arranged at the tail end of the connecting shaft (52);
the preparation method of the energy-saving heat-preserving high-strength concrete by adopting the concrete aggregate screening device comprises the following steps:
step one, crushing concrete raw materials: firstly, crushing mined sandstone or limestone by adopting a hammer crusher, and intensively storing crushed broken stone;
step two, concrete aggregate is screened once: crushed stones are conveyed to one side of a sieving cylinder (3) of the concrete aggregate sieving device, a motor (51) is started, the sieving cylinder (3) rotates, the crushed stones can be sieved and conveyed through sieve holes in the sieving cylinder (3), and aggregates with larger particles can be conveyed out from one side of the sieving cylinder (3) facing downwards;
thirdly, secondarily sieving concrete aggregate: crushed stones screened downwards by the screening cylinder (3) are screened secondarily through the arc-shaped screen (21), the arc-shaped screen (21) can be driven to swing by rotation of the screening cylinder (3), so that medium-particle aggregates are screened out from one side of the main cylinder (2) which is inclined downwards, and small-particle aggregates are screened out from the bottom of the main cylinder (2) and are respectively collected separately;
and step four, concrete preparation: and mixing and stirring the cementing material, sand, aggregate and water according to a proportion to form the concrete.
2. The preparation method of the energy-saving heat-preservation high-strength concrete according to claim 1, wherein the transmission branched chain (54) comprises a swing gear (541) arranged at one end of a rotating shaft (42) close to a screening bracket (41), one side of the swing gear (541) is connected with a transmission rack (542) in a meshed mode, the transmission rack (542) is vertically and slidably connected with the screening bracket (41), the upper end of the transmission rack (542) is connected with one end of a matching rotating rod (543) through a pin shaft, the other end of the matching rotating rod (543) is connected with a rotary table (544) through a pin shaft, and the rotary table (544) is arranged at the tail end of a connecting shaft (52).
3. The preparation method of the energy-saving heat-preservation high-strength concrete according to claim 1, wherein one end of the screening cylinder (3) which is inclined downwards is of a flaring structure, and the screen holes on the screening cylinder (3) are larger than those on the arc screen (21).
4. The preparation method of the energy-saving heat-preservation high-strength concrete according to claim 1, wherein the swinging part comprises a trapezoid poking body (23) arranged on the end face of the arc-shaped screen (21) in an elastic telescopic fit mode, a rotating poking block (24) matched with the trapezoid poking body (23) is arranged on the screening cylinder (3), and the telescopic force of the trapezoid poking body (23) is larger than that of telescopic structures on two sides of the arc-shaped screen (21).
5. The method for preparing the energy-saving heat-preserving high-strength concrete according to claim 1, wherein the leveling piece (44) comprises a leveling rotating rod (441) arranged on the rotating shaft (42), a leveling plate (442) is arranged at the tail end of the leveling rotating rod (441), the leveling plate (442) is of an arc-shaped structure, and a gap exists between the leveling plate (442) and the screening cylinder (3).
6. The method for preparing the energy-saving heat-preserving high-strength concrete according to any one of claims 1 to 5, wherein a cleaning piece (45) is arranged on the outer side surface of one end of the supporting sleeve (43) positioned in the screening cylinder (3); the cleaning piece (45) is including installing clearance branch (451) on supporting sleeve (43), install clearance arc (452) on clearance branch (451), one side that clearance arc (452) are close to screening section of thick bamboo (3) lateral wall evenly is provided with spring bar (453), install stripper plate (454) jointly on spring bar (453), the position that stripper plate (454) corresponds screening section of thick bamboo (3) on the sieve mesh is provided with clearance arch (455), one side that clearance arc (452) corresponds screening section of thick bamboo (3) rotation direction clockwise is provided with scrapes off frame (456).
7. The preparation method of the energy-saving heat-preservation high-strength concrete according to claim 6, wherein the inner side surface of the main support (2) is provided with elastic hole cleaning blocks (457) along the axial direction of the main support and corresponding to positions of sieve holes on the sieving cylinder (3), the elastic hole cleaning blocks (457) are of conical structures, and the elastic hole cleaning blocks (457) are located on one side of the cleaning arc plate (452) corresponding to the clockwise direction of the sieving cylinder (3).
8. The method for preparing energy-saving heat-preserving high-strength concrete according to claim 6, wherein the lower end of the extrusion plate (454) is arranged obliquely to one side of the cleaning arc plate (452).
9. The preparation method of the energy-saving heat-preservation high-strength concrete according to claim 6, wherein the upper end of the cleaning arc plate (452) is obliquely arranged to one side of the screening cylinder (3), and the distance between the upper end of the cleaning arc plate (452) and the screening cylinder (3) is larger than the distance between the scraping frame (456) and the screening cylinder (3).
10. The method for preparing the energy-saving heat-preserving high-strength concrete according to claim 1, wherein a feeding guide frame (46) is arranged at one end of the supporting sleeve (43) which is inclined upwards corresponding to the screening cylinder (3).
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| CN111151438A (en) * | 2020-01-07 | 2020-05-15 | 中源宏宇建设集团有限公司 | Grit screening plant for housing construction |
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| US3928189A (en) * | 1974-05-31 | 1975-12-23 | Rotex | Wear resisting hold-down means for screening machine |
| CA2235938A1 (en) * | 1997-04-29 | 1998-10-29 | Shell Canada Limited | Apparatus for preparing a pumpable oil sand and water slurry |
| US6305552B1 (en) * | 1999-03-12 | 2001-10-23 | Universal Leaf Tobacco Company, Inc. | Apparatus for removing matter from tobacco stems |
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| CN114682481A (en) | 2022-07-01 |
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