CN111299152B - Grit multi-stage screening device of bridge construction usefulness - Google Patents

Grit multi-stage screening device of bridge construction usefulness Download PDF

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Publication number
CN111299152B
CN111299152B CN202010139956.5A CN202010139956A CN111299152B CN 111299152 B CN111299152 B CN 111299152B CN 202010139956 A CN202010139956 A CN 202010139956A CN 111299152 B CN111299152 B CN 111299152B
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CN
China
Prior art keywords
screen
screening
seat
bin
sand
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Expired - Fee Related
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CN202010139956.5A
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Chinese (zh)
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CN111299152A (en
Inventor
杨在喜
苏永红
田甜
薛智博
李莹
韩亚丽
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Expired - Fee Related legal-status Critical Current
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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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/20—Disintegrating by grating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • 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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • 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

Abstract

The invention discloses a gravel multistage screening device for bridge construction, which comprises a feeding bin, a screening bin and a discharging seat, wherein the feeding bin and the screening bin are communicated in an L shape; the pre-screening assembly is arranged in the feeding bin, qualified gravel can be screened into the screening bin by the pre-screening assembly, and unqualified gravel can be intercepted and stopped in the pre-screening assembly so as to be crushed, so that the quality of the whole gravel is improved, the subsequent screening efficiency is improved, and the occurrence of rework is reduced; in addition, the screen assemblies in the device can screen the sand and stone in a grading manner, and can screen the sand and stone in a vibrating manner, so that the screening efficiency and the accuracy are improved.

Description

Grit multi-stage screening device of bridge construction usefulness
Technical Field
The invention particularly relates to the technical field of gravel screening, and particularly relates to a gravel multistage screening device for bridge construction.
Background
In the bridge work progress, according to the construction needs of difference, need sieve the processing to former gravel and stones, separate big or small stone wherein, fine sand, use now more be exactly the screening machine that has multistage screen cloth, improved screening efficiency greatly.
However, current screening plant, at first, in the screen cloth use, there are a lot of sizes and the equal size stone of screen cloth mesh to plug up the mesh, if not clear away in time, will cause the jam to the mesh, influence work efficiency, damage the machine even, secondly, the stone that contains in the grit is filtered out by the screen cloth if will transport once more or smash, wastes time and energy, consequently, technical staff in the field provides the multistage screening plant of grit of a bridge construction usefulness to solve the problem that proposes in the above-mentioned background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a multi-stage sand and stone screening device for bridge construction comprises a feeding bin, a screening bin and a discharging seat, wherein the feeding bin and the screening bin are arranged in an L-shaped manner and communicated with each other, and the discharging seat is detachably arranged at the discharging end of the screening bin so as to convey screened sand and stones to corresponding conveying belts in a classified manner;
the feed bin is internally provided with a pre-screening assembly, the pre-screening assembly can screen qualified gravel into the screening bin, and can intercept and stop unqualified gravel in the pre-screening assembly so as to carry out crushing treatment;
and a screen assembly is arranged in the screening bin.
Further, preferably, the pre-screening assembly comprises an inner screen and an outer screen, the inner screen and the outer screen are both barrel-shaped, the inner screen is coaxially inserted into the outer screen, and a gap is reserved between the inner screen and the outer screen, so that a screening space is formed;
a gap is reserved between the outer screen and the inner wall of the feeding bin, so that a grinding space is formed;
the circumference of the inner screen is provided with a plurality of first screen holes, so that sand stones in the inner screen can be gradually and completely thrown out to the screening space when the inner screen rotates, and the circumference of the outer screen is provided with a plurality of second screen holes, so that qualified sand stones in the outer screen can be gradually thrown out to the grinding space when the outer screen rotates.
Further, preferably, the inner screen is driven to rotate by a first motor, and the outer screen is driven to rotate by a second motor, wherein the first motor is connected with the inner screen by a feeding assembly, the first motor is arranged in a first sand prevention seat, and the first sand prevention seat is fixed at the position of a feeding opening of the feeding bin by a support rod; the output end of the second motor is directly fixedly connected with the bottom of the outer screen, the second motor is arranged in the second sand control seat, the second sand control seat adopts the support rod to be fixed at the position of the discharge hole of the feeding bin, the second sand control seat is also provided with an oscillator, and the oscillation end of the oscillator is connected with the screen assembly.
Further, preferably, the feeding assembly comprises a connecting disc and a top disc, the connecting disc is fixed at the output end of the motor I and is arranged at the opening position of the inner screen, and the diameter of the connecting disc is smaller than the inner diameter of the inner screen, so that a channel I can be formed between the connecting disc and the inner screen; the top plate is arranged above the inner screen and fixed at the opening position of the inner screen, the top plate is fixedly connected with the connecting plate through a plurality of bolts, so that the connecting plate can drive the top plate and the inner screen to rotate, a through hole is formed in the middle of the top plate, a second channel is formed, a gap is reserved between the top plate and the connecting plate, and the second channel is communicated with the first channel.
Further, as preferred, the pan feeding subassembly still includes backup pad and income hopper, the backup pad is the arc solid of revolution, and the great one end of its opening links to each other with the top dish is fixed, and the less one end of its opening contracts to sand control seat direction, just the backup pad does not contact with sand control seat one, the equipartition has the interception hole in the backup pad to intercept great grit, go into the hopper for the both sides open-ended solid of revolution, its one end links to each other with the backup pad is fixed, and its other end is equipped with the rotation ring seat, the rotation ring seat rotates and sets up on the inner wall in feeding storehouse.
Further, as preferred, screen assembly includes a plurality of screen cloth seats and vibrates the spring, and is a plurality of the screen cloth seat is parallel and the slope setting of each other, and its one end that is close to the feeding storehouse is higher than its one end of keeping away from the feeding storehouse, just the one end that the feeding storehouse was kept away from to the screen cloth seat adopts the hinge joint in the screening storehouse, the other end of screen cloth seat adopts to vibrate the spring as the support.
Further, preferably, from top to bottom, the diameters of the screen meshes on the plurality of screen seats are sequentially reduced and arranged; two adjacent cloth has the vibration spring between the screen cloth seat, and the screen cloth seat of bottommost adopts the vibration spring to support on the bottom plate in screening storehouse, the bottom plate in screening storehouse sets up for the slope, and incline direction and angle are unanimous with the screen cloth seat, and the screen cloth seat at topmost adopts the vibration spring coupling on the branch in two outsides of sand control seat.
Further, it is preferable that the screening space is provided therein with grinding teeth one and grinding teeth two, the grinding teeth one being spirally arranged on an outer circumference of the inner screen, and the grinding teeth two being spirally arranged on an inner circumference of the outer screen.
Further, preferably, a third grinding tooth and a fourth grinding tooth are arranged in the grinding space, the third grinding tooth is spirally arranged on the outer circumference of the outer screen, and the fourth grinding tooth is spirally arranged inside the feeding bin; the outer circumference of outer screen cloth is provided with two sets of spacing ring seats, the spacing ring seat rotates to be set up on the inner wall in feeding storehouse.
Further, as preferred, the one end detachable of ejection of compact seat is fixed at the discharge end in screening storehouse, the other end of ejection of compact seat link up the embedding and has a plurality of extension mouths, and is a plurality of the extension mouth corresponds with the screen cloth seat respectively.
Compared with the prior art, the invention has the beneficial effects that: the discharge seat is detachably arranged at the discharge end of the screening bin, so that the screened sand and stone are conveyed to corresponding conveying belts in a classified manner, and classified collection is facilitated; in addition, the pre-screening assembly is arranged in the feeding bin, the pre-screening assembly can screen qualified gravel into the screening bin, and can intercept unqualified gravel to stay in the pre-screening assembly so as to crush the unqualified gravel, so that the quality of the whole gravel is improved, the subsequent screening efficiency is improved, and the occurrence of rework situation is reduced; in addition, the screen assemblies in the device can screen the sand and stone in a grading manner, and can screen the sand and stone in a vibrating manner, so that the screening efficiency and the accuracy are improved.
Drawings
FIG. 1 is a schematic perspective view of a multi-stage sand sieving device for bridge construction;
FIG. 2 is a schematic structural view of a multi-stage sand-gravel screening device for bridge construction, from which a discharging seat is removed;
FIG. 3 is a schematic plan view of a multi-stage sand sieving device for bridge construction;
FIG. 4 is a partially enlarged schematic view of FIG. 3;
FIG. 5 is an enlarged view of the structure at A in FIG. 4;
in the figure: 1. a feeding bin; 2. a screening bin; 3. a screen assembly; 4. a discharging seat; 5. an extension port; 6. a screen seat; 7. a vibration spring; 8. a first sand prevention seat; 9. a second sand prevention seat; 10. an inner screen; 11. an outer screen; 12. a first motor; 13. a second motor; 14. grinding the first teeth; 15. grinding the teeth II; 16. grinding teeth III; 17. grinding teeth IV; 18. a limit ring seat; 19. an oscillator; 20. a connecting disc; 21. a top tray; 22. a first channel; 23. a second channel; 24. a support plate; 25. intercepting holes; 26. feeding into a hopper; 27. the ring seat is rotated.
Detailed Description
Referring to fig. 1 to 5, in the embodiment of the present invention, a gravel multistage screening device for bridge construction includes a feeding bin 1, a screening bin 2, and a discharging seat 4, wherein the feeding bin 1 and the screening bin 2 are arranged in an L-shaped communication manner, and the discharging seat 4 is detachably disposed at a discharging end of the screening bin 2, so as to separately convey screened gravel to corresponding conveyor belts;
the feed bin 1 is internally provided with a pre-screening assembly, the pre-screening assembly can screen qualified gravel into the screening bin 2, and can intercept unqualified gravel and stop the unqualified gravel in the pre-screening assembly so as to carry out crushing treatment;
and a screen assembly 3 is arranged in the screening bin 2.
In this embodiment, the pre-screening assembly includes an inner screen 10 and an outer screen 11, the inner screen 10 and the outer screen 11 are both in a barrel shape, the inner screen 10 is coaxially inserted into the outer screen 11, and a gap is left between the inner screen 10 and the outer screen 11, so as to form a screening space;
a gap is reserved between the outer screen mesh 11 and the inner wall of the feeding bin 11, so that a grinding space is formed;
the inner screen 10 is provided with a plurality of first screen holes on the circumference, so that the inner screen 10 can gradually throw all the gravels out to the screening space when rotating, the outer screen 11 is provided with a plurality of second screen holes on the circumference, so that the outer screen 11 can gradually throw the qualified gravels out to the grinding space when rotating, therefore, the inner screen 10 can buffer the gravels and gradually release the gravels to the screening space for pre-screening, the gravels screened to the grinding space fall on the drying screen assembly 3 after simple grinding treatment, and the gravels not screened to the grinding space are stopped and then are ground in the screening space until being qualified.
As a preferred embodiment, the inner screen 10 is driven by a first motor 12 to rotate, and the outer screen 11 is driven by a second motor 13 to rotate, wherein the first motor 12 is connected with the inner screen 10 by a feeding assembly, the first motor 12 is arranged in a first sand control seat 8, and the first sand control seat 8 is fixed at a feeding port of the feeding bin 1 by a supporting rod; the direct bottom fixed with outer screen cloth 11 of output of motor two 13 links to each other, motor two 13 sets up in sand control seat two 9, sand control seat two 9 adopt branch to fix in the discharge gate position department in feeding storehouse 1, just still be provided with oscillator 19 in the sand control seat two 9, the oscillation end of oscillator 19 is connected with screen assembly 3.
As shown in fig. 5, the feeding assembly comprises a connecting disc 20 and a top disc 21, the connecting disc 20 is fixed at the output end of the motor I12, the connecting disc 20 is arranged at the opening position of the inner screen mesh 10, the diameter of the connecting disc 20 is smaller than the inner diameter of the inner screen mesh 10, so that a channel I22 can be formed between the connecting disc 20 and the inner screen mesh 10; top dish 21 sets up the top of interior screen cloth 10 and fixes the open position department at interior screen cloth 10, adopt a plurality of bolt fastening to link to each other between top dish 21 and the connection pad 20 to make connection pad 20 can drive top dish 21 and interior screen cloth 10 rotate, just the through-hole has been seted up at the middle part of top dish 21, thereby form two channels 23, leave the clearance between top dish 21 and the connection pad 20, thereby make and be linked together between two channels 23 and the passageway 22, the grit of being convenient for enters into in the interior screen cloth 10 through two channels and the passageway one.
On the basis of the above embodiment, the feeding assembly further comprises a supporting plate 24 and a feeding hopper 26, the supporting plate 24 is an arc-shaped rotary body, one end with a larger opening is fixedly connected with the top disc 21, the other end with a smaller opening is contracted towards the first 8 direction of the sand prevention seat, the supporting plate 24 is not contacted with the first 8 direction of the sand prevention seat, blocking holes 25 are uniformly distributed on the supporting plate 24 so as to intercept larger gravels and foreign matters and prevent the larger gravels and foreign matters from entering the device to damage the machine, the feeding hopper 26 is a rotary body with openings at two sides, one end of the feeding hopper is fixedly connected with the supporting plate 24, the other end of the feeding hopper is provided with a rotary ring seat 27, and the rotary ring seat 27 is rotatably arranged on the inner wall of the feeding bin 1, namely, the inner wall of the feeding bin 1 is provided with an annular groove so as to be rotatably connected.
In this embodiment, screen cloth subassembly 3 includes a plurality of screen cloth seats 6 and vibrates spring 7, and is a plurality of screen cloth seat 6 is parallel and the slope setting of each other, and its one end that is close to feeding storehouse 1 is higher than its one end of keeping away from feeding storehouse 1, just the one end that feeding storehouse 1 was kept away from to screen cloth seat 6 adopts the hinge to articulate in screening storehouse 2, the other end of screen cloth seat 6 adopts to vibrate spring 7 as the support.
In this embodiment, from top to bottom, the diameters of the screen mesh holes on the plurality of screen seats 6 are arranged in a decreasing order, thereby realizing classified screening; two adjacent cloth has between screen cloth seat 6 and vibrates spring 7, and the screen cloth seat 6 of bottommost adopts to vibrate spring 7 and support on the bottom plate of screening storehouse 2, the bottom plate of screening storehouse 2 sets up for the slope, and incline direction and angle are unanimous with screen cloth seat 6, and screen cloth seat 6 at topmost adopts to vibrate spring 7 and connects on the branch in two outsides of sand control seat to can filter the grit with the mode of vibrating, improved screening efficiency and precision.
In this embodiment, the screening space is provided with the first grinding teeth 14 and the second grinding teeth 15, the first grinding teeth 14 are spirally arranged on the outer circumference of the inner screen 10, and the second grinding teeth 14 are spirally arranged on the inner circumference of the outer screen 11.
In this embodiment, a third grinding tooth 16 and a fourth grinding tooth 17 are arranged in the grinding space, the third grinding tooth 16 is spirally arranged on the outer circumference of the outer screen 11, and the fourth grinding tooth 17 is spirally arranged inside the feeding bin 1; two groups of limit ring seats 18 are arranged on the outer circumference of the outer screen 11, and the limit ring seats 18 are rotatably arranged on the inner wall of the feeding bin 1.
As shown in fig. 1, one end of the discharging seat 4 is detachably fixed at the discharging end of the screening bin 2, the other end of the discharging seat 4 is penetrated and embedded with a plurality of extending openings 5, and the extending openings 5 correspond to the screen seats 6 respectively, so that the sorting and the collection are facilitated.
In specific implementation, the gravels are continuously put into the inner screen mesh 10 from the feeding hopper 26, when the inner screen mesh 10 rotates, the gravels in the inner screen mesh can be gradually and completely thrown out into the screening space, when the outer screen mesh 11 rotates, the qualified gravels in the screening space can be gradually thrown out into the grinding space, the gravels screened into the grinding space are simply ground and then fall on the airing net component 3 for grading screening, and the gravels not screened into the grinding space are stopped and then ground in the screening space until the gravels become qualified products.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (6)

1. A multi-stage sand and stone screening device for bridge construction comprises a feeding bin, a screening bin and a discharging seat, wherein the feeding bin and the screening bin are communicated in an L shape;
the feed bin is internally provided with a pre-screening assembly, the pre-screening assembly can screen qualified gravel into the screening bin, and can intercept and stop unqualified gravel in the pre-screening assembly so as to carry out crushing treatment;
a screen assembly is arranged in the screening bin;
the pre-screening assembly comprises an inner screen and an outer screen, the inner screen and the outer screen are both barrel-shaped, the inner screen is coaxially inserted into the outer screen, and a gap is reserved between the inner screen and the outer screen, so that a screening space is formed;
a gap is reserved between the outer screen and the inner wall of the feeding bin, so that a grinding space is formed;
the circumference of the inner screen is provided with a plurality of first screen holes, so that sand stones in the inner screen can be gradually and completely thrown out to the screening space when the inner screen rotates, and the circumference of the outer screen is provided with a plurality of second screen holes, so that qualified sand stones in the outer screen can be gradually thrown out to the grinding space when the outer screen rotates;
the inner screen is driven to rotate by a first motor, the outer screen is driven to rotate by a second motor, the first motor is connected with the inner screen by a feeding assembly, the first motor is arranged in a first sand prevention seat, and the first sand prevention seat is fixed at the position of a feeding opening of a feeding bin by a support rod; the output end of the second motor is directly and fixedly connected with the bottom of the outer screen, the second motor is arranged in a second sand prevention seat, the second sand prevention seat is fixed at the position of a discharge hole of the feeding bin by adopting a support rod, an oscillator is further arranged in the second sand prevention seat, and the oscillation end of the oscillator is connected with a screen assembly;
the feeding assembly comprises a connecting disc and a top disc, the connecting disc is fixed at the output end of the first motor, the connecting disc is arranged at the opening position of the inner screen, and the diameter of the connecting disc is smaller than the inner diameter of the inner screen so that a first channel can be formed between the connecting disc and the inner screen; the top disc is arranged above the inner screen and fixed at the opening position of the inner screen, the top disc is fixedly connected with the connecting disc through a plurality of bolts, so that the connecting disc can drive the top disc and the inner screen to rotate, a through hole is formed in the middle of the top disc, a second channel is formed, and a gap is reserved between the top disc and the connecting disc, so that the second channel is communicated with the first channel;
the pan feeding subassembly still includes backup pad and income hopper, the backup pad is the arc solid of revolution, and its great one end of opening links to each other with the top dish is fixed, and the less one end of its opening to the shrink of sand control seat direction, just the backup pad does not contact with sand control seat one, the equipartition has the interception hole in the backup pad to intercept great grit, go into the hopper for both sides open-ended solid of revolution, its one end links to each other with the backup pad is fixed, and its other end is equipped with the rotating ring seat, the rotating ring seat rotates and sets up on the inner wall in feeding storehouse.
2. The multi-stage sand and stone screening device for bridge construction according to claim 1, wherein the screen assembly comprises a plurality of screen seats and a vibration spring, the screen seats are parallel and obliquely arranged, one end of each screen seat close to the feeding bin is higher than one end of each screen seat far away from the feeding bin, one end of each screen seat far away from the feeding bin is hinged in the screening bin through a hinge, and the other end of each screen seat is supported through the vibration spring.
3. The multi-stage sand and stone screening device for bridge construction according to claim 2, wherein the diameters of the screen mesh holes on the plurality of screen seats are arranged in a decreasing manner from top to bottom; two adjacent cloth has the vibration spring between the screen cloth seat, and the screen cloth seat of bottommost adopts the vibration spring to support on the bottom plate in screening storehouse, the bottom plate in screening storehouse sets up for the slope, and incline direction and angle are unanimous with the screen cloth seat, and the screen cloth seat at topmost adopts the vibration spring coupling on the branch in two outsides of sand control seat.
4. The multistage sand and stone screening device for bridge construction as claimed in claim 1, wherein a first crushing tooth and a second crushing tooth are provided in said screening space, said first crushing tooth is spirally arranged on the outer circumference of the inner screen, and said second crushing tooth is spirally arranged on the inner circumference of the outer screen.
5. The multi-stage sand and stone screening device for bridge construction according to claim 1, wherein a third grinding tooth and a fourth grinding tooth are arranged in the grinding space, the third grinding tooth is spirally arranged on the outer circumference of the outer screen, and the fourth grinding tooth is spirally arranged inside the feeding bin; the outer circumference of outer screen cloth is provided with two sets of spacing ring seats, the spacing ring seat rotates to be set up on the inner wall in feeding storehouse.
6. The multi-stage sand and stone screening device for bridge construction according to claim 1, wherein one end of the discharging seat is detachably fixed at the discharging end of the screening bin, the other end of the discharging seat is embedded with a plurality of extending openings in a penetrating manner, and the plurality of extending openings respectively correspond to the screen seats.
CN202010139956.5A 2020-03-03 2020-03-03 Grit multi-stage screening device of bridge construction usefulness Expired - Fee Related CN111299152B (en)

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Publication number Priority date Publication date Assignee Title
CN112974224B (en) * 2021-02-19 2023-05-09 新疆兴禹建设工程有限公司 Multidirectional vibration sorting device for energy-saving and environment-friendly building engineering construction building materials

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