CN112893106B - Sand screening installation is used in road and bridge construction - Google Patents
Sand screening installation is used in road and bridge construction Download PDFInfo
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- CN112893106B CN112893106B CN202110408566.8A CN202110408566A CN112893106B CN 112893106 B CN112893106 B CN 112893106B CN 202110408566 A CN202110408566 A CN 202110408566A CN 112893106 B CN112893106 B CN 112893106B
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- 239000004576 sand Substances 0.000 title claims abstract description 149
- 238000012216 screening Methods 0.000 title claims abstract description 81
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 title claims description 3
- 238000005192 partition Methods 0.000 claims abstract description 85
- 239000004744 fabric Substances 0.000 claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 abstract description 38
- 230000008569 process Effects 0.000 abstract description 32
- 230000009471 action Effects 0.000 abstract description 15
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- 230000000694 effects Effects 0.000 description 23
- 238000001125 extrusion Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 230000000670 limiting effect Effects 0.000 description 6
- 238000007873 sieving Methods 0.000 description 6
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- 239000011148 porous material Substances 0.000 description 5
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- 230000007246 mechanism Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
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Classifications
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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
-
- 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
-
- 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
- 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
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/522—Cleaning with brushes or scrapers with brushes
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of sand screening, and discloses sand screening equipment for road and bridge construction, which comprises a device shell, wherein an upper funnel is arranged at the top of the device shell, a bottom drain is arranged at the bottom of the device shell, a blocking cover is arranged on the inner wall of the device shell, a plurality of supporting plates are arranged on the inner wall of the device shell through the blocking cover, two motors are arranged at the bottom of the inner side of the blocking cover, a turbine is arranged on an output shaft of the motor, a gear is meshed and connected with the peripheral side surface of the turbine, a rotating rod is arranged inside the gear and movably connected inside the supporting plates through a bearing, a first rotating disk and a second rotating disk are arranged at two ends of the rotating rod, the device not only screens a trapezoidal screen plate in a partitioning mode to improve the screening efficiency, but also screens the trapezoidal screen plate under the action of a partition plate in the descending process by virtue of the rotating action of the partition plate, meanwhile, the partition plate can drive the partition cloth to clean the fine sand on the top of the blocking cover in the rotating process.
Description
Technical Field
The invention belongs to the technical field of sand screening, and particularly relates to sand screening equipment for road and bridge construction.
Background
The road and bridge engineering refers to the whole work of planning, designing, constructing, maintaining, repairing and the like of structures of roads crossing water areas, valleys and all traffic channels; at road and bridge job site, the concrete is mixed often and is needed to screen husky material before the material, in order to avoid mixing river mud or even large-scale debris in the husky material, produce the influence to road and bridge quality, current husky material screening is mostly put the screen cloth to one side and makes the screen cloth put to one side, then the manual work is spilt husky material to the screen cloth, utilize husky material to roll under the action of gravity on the sifter, reach the purpose of screening, such screening process, the single is spilt husky material volume to the sifter can not be too much, and it has certain restriction to spill the interval of sifter, the husky material that needs the sifter can be shed again when falling totally, in case the husky material is piled up the influence screening effect. The consequence of doing so is that the screening efficiency of sand material has just greatly reduced, and then causes the time delay to the construction.
The existing sand screening machine also has a certain need for improvement, when sand such as sand is fed onto the screen, the screen can allow qualified sand to pass through the screen by vibration, but if the fed sand is accumulated on the surface of the screen, the sand on the upper layer is difficult to screen because the fed sand hardly reaches the lower layer.
Disclosure of Invention
The invention aims to solve the problems, and provides sand screening equipment for road and bridge construction, which has the advantages of separating and screening sand, avoiding accumulation and realizing continuous screening.
In order to achieve the purpose, the invention provides the following technical scheme: a sand screening device for road and bridge construction comprises a device shell, wherein an upper funnel is arranged at the top of the device shell, a bottom drain is arranged at the bottom of the device shell, a blocking cover is arranged on the inner wall of the device shell, a plurality of supporting plates are arranged on the inner wall of the device shell through the blocking cover, two motors are arranged at the bottom of the inner side of the blocking cover, turbines are arranged on output shafts of the motors, gears are meshed and connected with the peripheral sides of the turbines, rotating rods are arranged inside the gears and movably connected inside the supporting plates through bearings, a first rotating disc and a second rotating disc are arranged at two ends of each rotating rod, a first ejector rod and a second ejector rod are hinged to one sides, away from the rotating rods, of the first rotating disc and the second rotating disc, a rectangular through groove is formed in the top of the blocking cover, and a first fixing block and a second fixing block are hinged to the other ends of the first ejector rod and the second ejector rod through the rectangular through groove, the top of the first fixed block and the top of the second fixed block are provided with trapezoidal sieve plates, one end of each trapezoidal sieve plate is provided with a baffle cover, the bottom of the right end of the baffle cover is provided with a flow guide port, the inner side surfaces of the trapezoidal sieve plates are hinged with a plurality of partition plates, two ends of each partition plate are respectively provided with a brush, a first spring is arranged between every two adjacent partition plates, one end, away from the flow guide port, of each of the two bottommost partition plates is hinged with a third ejector rod, the other end of each third ejector rod is hinged to the top of the baffle cover, the top of the baffle cover is provided with a second spring, the other end of each second spring is fixedly connected with the bottom of the trapezoidal sieve plate, one side of each third ejector rod is provided with a piece of partition cloth, and the other end of each partition cloth is fixedly connected with the corresponding second ejector rod;
when the trapezoidal sieve plate moves downwards, the partition plate descends along with the trapezoidal sieve plate, the partition plate rotates towards one end close to the trapezoidal sieve plate through the limit of the third ejector rod, sand is squeezed and kneaded by the partition plate, the partition plate drives the third ejector rod to synchronously rotate, and the space volume formed by the partition cloths at the two ends is increased so as to extract the sand at the top of the trapezoidal sieve plate to move downwards.
As a preferred technical scheme of the invention, a plurality of supporting legs are uniformly arranged at the bottom of the device shell in an array mode, and buffer gaskets are arranged at the bottoms of the supporting legs.
As a preferable technical solution of the present invention, the first lift pin and the first rotating disk are connected eccentrically, the second lift pin and the second rotating disk are connected eccentrically, and a connection position of the first lift pin and the first rotating disk is the same as a connection position of the second lift pin and the second rotating disk.
As a preferable technical solution of the present invention, the top of the blocking cover is an arc surface protruding upward.
In a preferred embodiment of the present invention, a bottom drain opening is formed in a bottom of the bottom drain.
As a preferred technical scheme of the invention, the two sides of the trapezoidal sieve plate and the baffle cover are respectively provided with a fixing strip, and the two fixing strips are in threaded connection with bolts.
As a preferred technical scheme of the present invention, the hinged position of the first fixed block and the first ejector rod is fixed with the screw cap through a screw, and the hinged position of the second fixed block and the second ejector rod is fixed with the screw cap through a screw.
As a preferable technical solution of the present invention, the length of the first ejector pin is greater than that of the second ejector pin, and the trapezoidal screen plate 7 is inclined by 15 degrees from one end of the first ejector pin to an obliquely lower end of the second ejector pin in an initial state.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problem of incomplete sand screening caused by sieve accumulation at the top of the sieve plate in the sand screening process by arranging the trapezoid sieve plate, the partition plate, the first ejector rod, the second ejector rod, the first rotating disc and the second rotating disc, the six partition plates divide the trapezoid sieve plate into seven areas, the section of the trapezoid sieve plate is in an inverted trapezoid shape, sand is uniformly divided into seven parts and respectively exists in the sieve, and the sand cannot slide down to form a large amount of accumulation if sliding down along the inclined surface of the sieve, thereby effectively avoiding the phenomenon that the sand on the upper layer is difficult to reach the sieve, leading the sand to be thoroughly screened, greatly improving the screening efficiency, leading the first ejector rod and the first rotating disc and the second ejector rod to be in eccentric connection with the first rotating disc and the second rotating disc, leading the first ejector rod and the second ejector rod to be in continuous up-and-down polarization in the rotating process along with the first rotating disc and the second rotating disc by the eccentric connection mode, thereby constantly vibrate about with trapezoidal sieve, and the slope just below originally under trapezoidal sieve initial condition, cause the sand of top can constantly roll large granule impurity along the inclined plane when receiving the vibration screening, and final discharge is outside, avoids forming on the screen cloth and piles up, influences subsequent screening process, has realized complete incessant screening, and the function of automatic clearance impurity has improved work efficiency.
2. The invention solves the problem of low efficiency of the trapezoidal sieve plate in the sieving process by the interaction of the devices such as the third ejector rod, the first spring, the second spring, the brush, the partition plate and the like, when the trapezoidal sieve plate moves upwards, the trapezoidal sieve plate generates an upward extrusion effect on sand so that the sand can be sieved under the action of sieve pores, simultaneously, the bottommost partition plate rotates under the limiting action of the third ejector rod, the rotation reverse direction is inward contraction, the other partition plates synchronously rotate, the space volume of each partition is increased at the moment so that the sand inside is distributed more dispersedly, the sieving efficiency is improved, when the trapezoidal sieve plate descends, the speed of the sand is lower than the descending speed of the trapezoidal sieve plate only by the dead weight, the partition plate reversely rotates at the moment, the sand on the upper layer of the partition plate is accelerated to descend by the flapping extrusion action of the partition plate, the brush crushes large sand grains by virtue of the elastic collision of the brush, the sand of subregion lower floor not only receives the squeezing action on upper strata, still receive the baffle and rub the effect to its extrusion along trapezoidal sieve orientation, make its and the abundant sliding friction of sieve mesh, not only can improve screening efficiency, can also dredge the sieve mesh jam, the device has not only realized the screening effect when trapezoidal sieve goes up, can also make inside sand receive the extrusion rubbing effect of baffle when trapezoidal sieve descends with the help of the baffle, not only can make the large granule broken, can also make its take place abundant slip on trapezoidal sieve, improve screening efficiency, increase screening effect, realize high-efficient abundant screening.
3. The invention solves the cleaning problem of the top of the separation cover by arranging the mutual matching of the third ejector rod, the separation cloth, the separation cover, the second ejector rod and other components, when the trapezoidal sieve plate moves upwards, the separation plate relatively moves close to rotate and contracts, the third ejector rod correspondingly moves close to rotate, the space volume formed by the separation cloth is reduced, meanwhile, the second ejector rod extends, the gap between the separation cloth and the top of the separation cover is increased, gas in the space formed by the separation cloth is blown out along the gap and drives fine sand accumulated on the top of the separation cover to be discharged, when the trapezoidal sieve plate moves downwards, the separation plate drives the third ejector rod to relatively open and rotate, the second ejector rod drives the separation cloth to descend, the gap between the separation cloth and the separation cover is reduced, and the space volume formed by the separation cloth is increased, the sand at the top of the trapezoidal sieve plate can be extracted, the descending speed of the sieve plate is increased, and the sieving efficiency is improved, the device rotates the in-process at the baffle and has realized in step that the space volume that the cloth constitutes changes, not only can further increase the falling velocity of sand, improves screening efficiency, can also carry out effectual cleaing away at the sand of separation cover top to piling up, avoids it to take place to block up the follow-up screening of influence.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an internal structural view of the first embodiment of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the first embodiment of the present invention;
FIG. 4 is a schematic side view of the internal structure of the first embodiment of the present invention;
FIG. 5 is a schematic view of the first embodiment of the present invention with the blocking cover removed;
FIG. 6 is a bottom view of the bottom drain of the present invention;
FIG. 7 is an enlarged view of the invention at A;
FIG. 8 is a schematic diagram of the internal structure of a second embodiment of the present invention;
FIG. 9 is a schematic diagram of the internal structure of the second embodiment of the present invention;
FIG. 10 is a schematic side view of the internal structure of the second embodiment of the present invention;
fig. 11 is a schematic structural view of the second embodiment of the present invention with the blocking cover removed.
In the figure: 1. a device housing; 2. an upper funnel; 3. supporting legs; 4. bottom leakage; 5. a support plate; 6. a barrier cover; 7. a trapezoidal sieve plate; 8. a shield; 9. a fixing strip; 10. a bolt; 11. a flow guide port; 12. a partition plate; 13. a first fixed block; 14. a first ejector rod; 15. a second fixed block; 16. a second ejector rod; 17. rotating the rod; 18. a first rotating disk; 19. a second rotating disk; 20. a motor; 21. a turbine; 22. a gear; 23. a bottom drain opening; 24. a flow guide disc; 25. a rectangular through groove; 26. a third ejector rod; 27. a first spring; 28. a second spring; 29. a brush; 30. and (4) separating cloth.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
As shown in figures 1 to 7, the invention provides sand screening equipment for road and bridge construction, which comprises a device shell 1, wherein an upper funnel 2 is arranged at the top of the device shell 1, the upper funnel 2 is mainly used for charging, a plurality of supporting legs 3 are uniformly arranged on the outer surface of the device shell 1 in an array mode, buffer gaskets are arranged at the bottoms of the supporting legs 3, a bottom drain 4 is arranged at the bottom of the device shell 1, a bottom leakage opening 23 is formed in the bottom of the bottom drain 4, screened sand flows out of the device along the bottom leakage opening 23 and is generally conveyed through a belt slideway, a blocking cover 6 is arranged on the inner wall of the device shell 1, the top of the blocking cover 6 is an upward-protruding cambered surface, so that the sand falling above the blocking cover can slide down along the cambered surface, the transmission mechanism at the bottom is separated from the screening mechanism due to the existence of the blocking cover 6, the influence on the normal working state of the transmission mechanism is avoided, a plurality of supporting plates 5 are arranged on the inner wall of the device shell 1 through the blocking cover 6, two motors 20 are arranged at the bottom of the inner side of the separation cover 6, a turbine 21 is arranged on an output shaft of each motor 20, a gear 22 is meshed and connected with the peripheral side surface of each turbine 21, a rotating rod 17 is arranged inside each gear 22, the rotating rod 17 is movably connected inside the support plate 5 through a bearing, a first rotating disk 18 and a second rotating disk 19 are arranged at the two ends of each rotating rod 17, a first ejector rod 14 and a second ejector rod 16 are hinged to one sides, away from the rotating rod 17, of the first rotating disk 18 and the second rotating disk 19, a rectangular through groove 25 is formed in the top of the separation cover 6, a first fixing block 13 and a second fixing block 15 are hinged to the other ends of the first ejector rod 14 and the second ejector rod 16 through the rectangular through groove 25, the first fixing block 13 and the first ejector rod 14 are fixed at hinged positions through screws and screw nuts, the second fixing block 15 and the second ejector rod 16 are fixed at hinged positions through screws and screw nuts, and therefore the two motors 20 are started to drive the turbines 21 to rotate, the worm wheel 21 rotates the in-process and drives gear 22 and rotate, and gear 22 rotates and drives inside dwang 17 and rotate, drives first rotating disk 18 and second rotating disk 19 and rotates when dwang 17 rotates to drive first ejector pin 14 and the rotation of second ejector pin 16 one end, the other end of first ejector pin 14 and second ejector pin 16 can only realize reciprocating and do not take place the horizontal hunting under the limiting displacement of first fixed block 13 and second fixed block 15.
The top parts of the first fixed block 13 and the second fixed block 15 are provided with a trapezoidal sieve plate 7, the first ejector rod 14 is eccentrically connected with the first rotating disk 18, the second ejector rod 16 is eccentrically connected with the second rotating disk 19, the connecting position of the first ejector rod 14 and the first rotating disk 18 is the same as the connecting position of the second ejector rod 16 and the second rotating disk 19, the eccentric connecting mode can enable the first ejector rod 14 and the second ejector rod 16 to continuously polarize up and down in the rotating process along with the first rotating disk 18 and the second rotating disk 19, so that the trapezoidal sieve plate 7 continuously vibrates up and down, the length of the first ejector rod 14 is larger than that of the second ejector rod 16, the trapezoidal sieve plate 7 originally inclines downwards at an angle of 15 degrees in the initial state, and therefore, sand can automatically slide from the end of the first ejector rod 14 to the end of the second ejector rod 16 in the trapezoidal sieve plate 7 by means of the inclination of the trapezoidal sieve plate 7 in the process of vibrating sand screening, the inner side surface of the trapezoidal sieve plate 7 is provided with a plurality of partition plates 12, the inner side of the trapezoidal sieve plate 7 can be provided with six partition plates 12 to divide the trapezoidal sieve plate 7 into seven regions with the same horizontal area, the regions are not uniform, the specification tentatively states that the partition plates are the same as an example, the section of the trapezoidal sieve plate 7 is in an inverted trapezoidal shape, when sand is poured in from the upper funnel 2, sand can be transversely sprinkled on the trapezoidal sieve plate 7 due to the fact that the section of the exposed part at the bottom of the upper funnel 2 is in a rectangular shape, the sand is divided into seven regions by the partition plates 12, the sand content in the regions is basically the same, the sand can be blocked by the partition plates 12 in the process of rolling down, large-scale accumulation pressure cannot occur, the situation that screening is not thorough is caused, one end of the trapezoidal sieve plate 7 is provided with the blocking cover 8, both sides of the trapezoidal sieve plate 7 and the blocking cover 8 are provided with fixing strips 9, and both fixing strips 9 are in threaded connection with bolts 10, the bolt 10 is used for fixedly connecting the trapezoidal sieve plate 7 and the baffle cover 8, the bottom of the right end of the baffle cover 8 is provided with a flow guide port 11, one side of the device shell 1 is provided with a flow guide disc 24, the flow guide port 11 is positioned above the inner end of the flow guide disc 24, the flow guide disc 24 extends inwards to the lower part of the right end of the baffle cover 8, in the process of polarization from top to bottom of the trapezoidal sieve plate 7, the baffle cover 8 is always positioned above the flow guide disc 24, large-particle stones leaked from the baffle cover can fall onto the flow guide disc 24 and then flow out of the device along the flow guide disc 24 to discharge unqualified sand particles out of the device, qualified sand particles can fall into the bottom leakage 4 below through the trapezoidal sieve plate 7, slide along the inclined plane of the inner wall of the bottom leakage 4 to slide to the bottom of the device along the bottom leakage port 23, and finally are collected by stacking with a slide way.
When the sand screening device is used, sand is poured into the sand from the upper funnel 2 and can be transversely sprinkled on the trapezoidal screen plate 7, so that the sand is divided into seven areas by the partition plates 12, the volume of the sand in each area is basically the same, and the sand can be blocked by the partition plates 12 in the process that the sand rolls down along the inclined surfaces, so that the sand cannot be accumulated and pressed on a large scale, the situation of incomplete screening is caused, the sand screening efficiency is improved, the sand screening effect is ensured, the motor 20 is started to drive the turbine 21 to rotate, the turbine 21 drives the gear 22 to rotate, the gear 22 drives the internal rotating rod 17 to rotate in the rotating process, the rotating rod 17 drives the first rotating disk 18 and the second rotating disk 19 at two ends to rotate, the first ejector rod 14 and the second ejector rod 16 at one end are driven to synchronously rotate in the rotating process of the first rotating disk 18 and the second rotating disk 19, and the positions of the first ejector rod 14 and the second ejector rod 16 at one side of the first rotating disk 18 and the second rotating disk 19 are the same at each moment, therefore, synchronous rotation of the sieve plate can be ensured, unnecessary vibration and machine damage are avoided, the lengths of the first ejector rod 14 and the second ejector rod 16 are different, the trapezoidal sieve plate 7 at the top of any position is in an inclined state, the inclination degree is 15 degrees, the first ejector rod 14 and the second ejector rod 16 can drive the trapezoidal sieve plate 7 at the top to continuously vibrate up and down in the eccentric rotation process, the vibration frequency is high, the vibration effect is good, sand at the top of the trapezoidal sieve plate 7 synchronously vibrates up and down along with the vibration, the sand is screened in the continuous vibration process, qualified sand falls down along sieve holes of the trapezoidal sieve plate 7 and falls into the bottom drain 4 to slide out of the device along the bottom drain port 23, and is finally collected by a slide way, sand can be continuously added and screened inside in the screening process, and unqualified large-particle sand which is separated can be guided out from the guide disc 24, and separating from the original sand. The device carries out reasonable layering to 7 tops of trapezoidal sieve, avoids inside sand to pile up in a large number and blocks up the sieve mesh, leads to the sieve sand unfavorable, causes the final sieve sand thoroughly, and the vibration screening mode is efficient simultaneously, and screening effect is good, and the device is simple, the maintenance of being convenient for, and the device durability is good, labour saving and time saving, and self-cleaning is effectual.
Second embodiment
Based on the sand screening equipment for road and bridge construction provided by the first embodiment, in actual use, the top of the trapezoidal screen plate 7 is partitioned to avoid accumulation for screening, although the screening effect can be obviously improved, the partition plate 12 is vertically arranged, so that part of sand is gathered in the partition and is not easy to screen only by vibration, thereby causing screen hole blockage, and the screening method inevitably has a very obvious problem, and the sand of the trapezoidal screen plate 7 in the ascending process is sufficiently pressed and contacted for screening, but in the descending process of the trapezoidal screen plate 7, the action direction of the trapezoidal screen plate 7 is downward, the descending speed of the sand is not fast due to the dead weight, so that the sand does not have the screening function or has poor screening effect in the descending process, the top of the blocking cover 6 is designed into a radian so that the sand slides down, however, in actual use, the top of the blocking cover 6 still can accumulate sand to a certain extent, and in order to solve the problem and improve the sand screening efficiency, with reference to fig. 8 to 11, the sand screening apparatus for road and bridge construction further comprises: the inner side surface of the trapezoidal sieve plate 7 is hinged with a plurality of partition plates 12, the partition plates 12 can rotate in the trapezoidal sieve plate 7 through the hinged arrangement, so that transverse extrusion force is provided for the sand screening process in each partition, the screening efficiency is improved, the two ends of each partition plate 12 are respectively provided with the brush 29, the brush 29 can touch the sand in each partition by virtue of the elasticity of the brush 29, the sand in the partition can not only be vibrated up and down, but also be touched by the brush 29, the vibration degree of the brush in the trapezoidal sieve plate 7 is increased, the screening efficiency is improved, meanwhile, the brush 29 can elastically collide with larger sand grains, so that the sand grains can be conveniently crushed into qualified sand grains, the sand grains can be screened out, the screening effect is improved, the yield of the sand is improved, the inclined arrangement mode of the trapezoidal sieve plate 7 can enable the sand in each partition to slide down from high to low, in the sliding process, the brush 29 gives sand an opposite acting force by virtue of the swinging of the brush 29, so that the sand in the subarea is turned, and therefore the effective sand screening yield is improved, if sand blocks a sieve pore, the swinging of the brush 29 can give a large elastic extrusion force to the subarea, the blocked sand is cleaned in the continuous swinging process, the sieve pore can be effectively cleaned by the brush 29 after the sand screening is finished, the blockage of the sieve pore is prevented, the first spring 27 is arranged between two adjacent partition plates 12, one end of the two bottommost partition plates 12 far away from the flow guide port 11 is hinged with the third ejector rod 26, the other end of the third ejector rod 26 is hinged with the top of the blocking cover 6, the trapezoidal sieve plate 7 can vibrate up and down under the driving of the motor 20, and the two bottommost partition plates 12 are limited by the hinging of the third ejector rod 26 in the vibrating process, the bottom partition plate 12 can synchronously drive all the partition plates 12 to synchronously swing through the connection relation of the first spring 27 to each partition plate 12 when swinging, and the first spring 27 realizes the elastic connection of each partition plate 12 by virtue of the elasticity of the first spring, so that the swinging amplitude of each partition plate 12 is driven by the bottom partition plate 12 and is related to the content of sand in a partition, when the trapezoidal sieve plate 7 moves upwards under the centrifugal drive of the motor 20, under the limiting action of the third ejector rod 26, the two bottom partition plates 12 both swing towards the central part of the trapezoidal sieve plate 7, when the content of sand in a certain partition is too high, the larger gravity of the sand can lead the partition plate 12 at one end of the area to swing downwards with larger amplitude and larger opening degree, when the trapezoidal sieve plate 7 starts to move downwards, the sand in each partition not only receives vibrating sieve sand in the vertical direction, bottommost baffle 12 swings to opposite direction, give a horizontal extrusion force of inside sand, rotate along trapezoidal sieve 7 direction and rub inside sand, and cause inside brush 29 to carry out elastic extrusion to its inside sand, simultaneously because the overweight degree of rotating of this baffle 12 that leads to of sand content in certain subregion is bigger, then the elastic action through first spring 27, bigger swing kneading power is applyed to the sand in this subregion to this baffle 12, make inside sand can be more efficient by trapezoidal sieve 7 screening, make the device possess better adaptability, can increase screening efficiency, accomplish more efficient screening.
The second spring 28 is arranged at the top of the blocking cover 6, the other end of the second spring 28 is fixedly connected with the bottom of the trapezoidal sieve plate 7, and the damage of the trapezoidal sieve plate 7 at the top due to long-time rigid support only by the first ejector rod 14, the second ejector rod 16 and the third ejector rod 26 is avoided through the elastic support effect of the second spring 28, the service life of the device is prolonged, safety and high efficiency are achieved, the up-and-down swing amplitude of the trapezoidal sieve plate 7 can be increased through the elasticity of the second spring 28, and the sieving efficiency is increased; one side of the third ejector rod 26 is provided with a spacing cloth 30, the other end of the spacing cloth 30 is fixedly connected with the second ejector rod 16, the third ejector rod 26 not only limits the two bottommost partition plates 12 in the up-and-down vibration process of the trapezoidal sieve plate 7, but also swings along with the partition plates 12 in the limiting process, the spacing cloth 30 is added in the swinging process, the top of the spacing cloth 30 is the position of the sieve pores of the trapezoidal sieve plate 7, and the bottom of the spacing cloth 30 is the top of the bottom leakage opening 23, so that the wind power generated in the swinging process of the spacing cloth 30 can assist the trapezoidal sieve plate 7 and the partition plates 12 to guide sand well, and meanwhile, the spacing cloth 30 can also guide screened fine sand to enable the fine sand to efficiently flow out of the device along the bottom leakage opening 23, when the trapezoidal sieve plate 7 swings upwards, the third ejector rod 26 relatively contracts and swings, thereby driving the spacing cloth 30 at two ends to relatively close and swing, the volume of the space formed by the separation cloth 30 is gradually reduced, at this time, the second ejector rod 16 rises, so that the gap between the lower end of the separation cloth 30 and the separation cover 6 is increased, the internal volume flows downwards in the form of wind power, sand accumulated on the top of the separation cover 6 slides down to the top of the separation cover 6 under the action of the wind power and flows out of the device along the bottom leakage orifice 23, when the trapezoidal sieve plate 7 moves downwards, the sand on the top of the trapezoidal sieve plate 7 moves downwards under the action of self gravity, but the speed is lower than the descending speed of the trapezoidal sieve plate 7, the partition plate 12 applies transverse acting force to the sand on the top of the partition, applies kneading force along the direction of the trapezoidal sieve plate 7 to the sand on the bottom of the partition, meanwhile, the separation cloth 30 opens towards both ends along with the third ejector rod 26, at this time, the second ejector rod 16 moves downwards, so that the gap between the separation cloth 30 and the separation cover 6 is gradually reduced, and a larger suction force is generated on the top of the separation cloth 30, on the sand at trapezoidal sieve 7 top was used to this suction, its decurrent atress of increase improved its speed of passing trapezoidal sieve 7 to increase screening efficiency, improve the screening effect.
When the sand screening device is used, sand is evenly poured into the device along the upper funnel 2, the trapezoidal screen plate 7 can enable the sand in each partition to be basically the same under the action of the partition plates 12, the motor 20 drives the turbine 21 to rotate, the turbine 21 drives the gear 22 to rotate, the gear 22 drives the rotating rod 17 to rotate, the rotating rod 17 drives the first rotating disk 18 and the second rotating disk 19 to rotate, the first ejector rod 14 and the second ejector rod 16 eccentrically rotate so as to drive the trapezoidal screen plate 7 to vibrate up and down to screen the sand inside, meanwhile, when the trapezoidal screen plate 7 rises, the trapezoidal screen plate 7 extrudes the sand at the top part to enable the sand to fall along the screen holes, the two bottommost partition plates 12 can rotate towards the inside of the trapezoidal screen plate 7 under the limiting effect of the third ejector rod 26 and the self-weight effect of the sand, and by virtue of the elastic connection relation of the first spring 27, the rest partition plates 12 also rotate along with the bottommost partition plates 12, the rotation degree is related to the gravity of sand in a corresponding subarea, the larger the weight is, the larger the rotation degree of the partition plate 12 is, the larger the dispersion degree of the sand in the subarea is when the sand rises, the better the screening effect is, and meanwhile, the third ejector rod 26 rotates along with the partition plate 12 in the same way, so that the separation cloths 30 at the two ends of the third ejector rod 26 are relatively close to each other, the second ejector rod 16 drives the other ends of the separation cloths 30 to rise to enlarge the gap between the separation cloths and the separation cover 6, the volume between the separation cloths 30 is gradually reduced, good blowing force can be generated on the bottom space of the separation cloths 30, generated wind force blows to the top of the separation cover 6 and drives the fine sand to slide along the gap, good guiding and blowing effects on the fine sand falling on the top of the separation cover 6 are achieved, the fine sand can quickly fall outside the device along the bottom leakage opening 23, and the problem that the top of the separation cover 6 is blocked to cause unsmooth screening is avoided.
When the trapezoidal sieve plate 7 rises to the highest point and begins to fall, sand at the top of the trapezoidal sieve plate also reaches the highest point, the trapezoidal sieve plate 7 is driven by the first ejector rod 14 and the second ejector rod 16 to fall rapidly, and the falling speed of the trapezoidal sieve plate 7 cannot be reached obviously only by the gravity of the sand, so that the screening effect of the trapezoidal sieve plate 7 is poor at this time, even the trapezoidal sieve plate 7 does not have screening capacity, but the partition plate 12 also falls along with the falling of the trapezoidal sieve plate 7, the partition plate 12 rotates towards two sides under the limiting action of the third ejector rod 26, the flapping extrusion of the upper sand in the partition is realized, the falling speed is increased, the trapezoidal sieve plate 7 can also screen at this stage, and the larger sand is split into fine sand under the elastic collision of the third ejector rod 29, the lower sand in the partition is not only extruded by the upper sand, but also is kneaded and extruded upwards along the direction of the trapezoidal sieve plate 7 by the brush which rotates the partition plate 12, the sieve mesh of the trapezoidal sieve plate 7 is fully rolled and rubbed, and the blocking substances in the sieve mesh are removed, so that the sieve mesh is kept in an unblocked state all the time, the process is used for realizing the sieving work when the trapezoidal sieve plate 7 descends, the sieving efficiency is greatly improved, meanwhile, the sand in the subarea can be fully extruded and rolled under the action of the brush 29, the sieve holes can be prevented from being blocked, in the descending process of the trapezoidal sieve plate 7, the third push rods 26 rotate towards two sides along with the rotation of the partition plate 12, at the moment, the volume of the area formed by the partition cloth 30 is gradually increased, at the same time, the second top bar 16 drives the other end of the separation cloth 30 to move downwards to reduce the gap between the separation cloth and the separation cover 6, thereby can reach the fine extraction effect to separating cloth 30 headspace for the sand at trapezoidal sieve 7 top receives this extraction effect to increase its descending speed, assists baffle 12 to increase screening efficiency. The device has not only realized the screening effect when trapezoidal sieve 7 rose, can also make inside sand receive the extrusion rubbing effect of baffle 12 when trapezoidal sieve 7 descends with the help of baffle 12, not only can make the large granule broken, can also make it take place abundant slip on trapezoidal sieve 7, improve screening efficiency, increase screening effect, the change of the space volume that interval cloth 30 constitutes has been realized in step to the while at baffle 12 rotation in-process, not only can further increase the falling velocity of sand, improve screening efficiency, can also carry out effectual clearance to the sand that piles up at separation cover 6 top, avoid it to take place to block up the follow-up screening of influence.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a road and bridge construction is with sand screening installation, includes device shell (1), its characterized in that: the top of device shell (1) is equipped with funnel (2), the bottom of device shell (1) is equipped with end leakage (4), the inner wall of device shell (1) is equipped with and separates cover (6), the inner wall of device shell (1) passes and separates cover (6) and is equipped with a plurality of backup pad (5), it is equipped with two motor (20) to separate cover (6) inboard bottom, the output shaft of motor (20) is equipped with turbine (21), the side meshing in all sides of turbine (21) is connected with gear (22), the inside of gear (22) is equipped with dwang (17), dwang (17) pass through bearing swing joint inside backup pad (5), the both ends of dwang (17) all are equipped with first carousel (18) and second carousel (19), one side that dwang (17) were kept away from to first carousel (18) and second carousel (19) all articulates there are first ejector pin (14) and second ejector pin (16), the rectangular through groove (25) is formed in the top of the blocking cover (6), the other ends of the first ejector rod (14) and the second ejector rod (16) penetrate through the rectangular through groove (25) and are hinged with a first fixed block (13) and a second fixed block (15), the top of the first fixed block (13) and the top of the second fixed block (15) are provided with a trapezoidal sieve plate (7), one end of the trapezoidal sieve plate (7) is provided with a blocking cover (8), the bottom of the right end of the blocking cover (8) is provided with a flow guide opening (11), the inner side face of the trapezoidal sieve plate (7) is hinged with a plurality of partition plates (12), two ends of each partition plate (12) are provided with a brush (29), a first spring (27) is arranged between every two adjacent partition plates (12), the two bottommost partition plates (12) are hinged with a third ejector rod (26) at the end far away from the flow guide opening (11), and the other end of the third ejector rod (26) is hinged to the top of the blocking cover (6), a second spring (28) is arranged at the top of the blocking cover (6), the other end of the second spring (28) is fixedly connected with the bottom of the trapezoidal sieve plate (7), a piece of blocking cloth (30) is arranged on one side of the third ejector rod (26), and the other end of the blocking cloth (30) is fixedly connected with one end of the second ejector rod (16);
when the trapezoidal sieve plate (7) moves downwards, the partition plate (12) descends along with the trapezoidal sieve plate, the partition plate (12) is limited by the third ejector rod (26), the partition plate (12) rotates towards one end close to the trapezoidal sieve plate (7), sand is squeezed and kneaded by the partition plate (12), the partition plate (12) drives the third ejector rod (26) to synchronously rotate, and the space volume formed by the partition cloth (30) at the two ends is increased so as to extract the sand at the top of the trapezoidal sieve plate (7) to move downwards.
2. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the device is characterized in that a plurality of supporting legs (3) are uniformly arranged at the bottom of the device shell (1) in an array mode, and buffer gaskets are arranged at the bottoms of the supporting legs (3).
3. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the connecting mode between first ejector pin (14) and first rotating disk (18) is eccentric connection, the connecting mode between second ejector pin (16) and second rotating disk (19) is eccentric connection, the hookup location of first ejector pin (14) and first rotating disk (18) is the same with the hookup location of second ejector pin (16) and second rotating disk (19).
4. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the top of the blocking cover (6) is an arc surface protruding upwards.
5. The sand screening apparatus for road and bridge construction according to claim 1, wherein: a flow guide disc (24) is arranged on one side of the device shell (1), the flow guide port (11) is located above the inner end of the flow guide disc (24), and the flow guide disc (24) extends inwards to the position below the right end of the blocking cover (8).
6. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the bottom of the bottom drain (4) is provided with a bottom drain opening (23).
7. The sand screening apparatus for road and bridge construction according to claim 1, wherein: both sides of trapezoidal sieve (7) and fender cover (8) all are equipped with fixed strip (9), two the equal threaded connection of fixed strip (9) has bolt (10).
8. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the hinged position of the first fixing block (13) and the first ejector rod (14) is fixed with the screw cap through a screw, and the hinged position of the second fixing block (15) and the second ejector rod (16) is fixed with the screw cap through a screw.
9. The sand screening apparatus for road and bridge construction according to claim 1, wherein: the length of the first ejector rod (14) is larger than that of the second ejector rod (16), and the trapezoid sieve plate (7) is inclined by 15 degrees from one end of the first ejector rod (14) to the obliquely lower side of one end of the second ejector rod (16) in the initial state.
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| CN113322732B (en) * | 2021-06-09 | 2022-01-14 | 郭文杰 | Flexible support reinforcing assembly for highway subgrade |
| CN117463622B (en) * | 2023-12-21 | 2025-09-16 | 扬州市仙龙粮食机械有限公司 | High efficiency malt stoner of circulated air |
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| CN102397841B (en) * | 2011-11-28 | 2013-08-21 | 河南省康星药业股份有限公司 | Bidirectional airflow submicron powder sorting machine |
| CN204953323U (en) * | 2015-09-09 | 2016-01-13 | 徐州天科机械制造有限公司 | Vacuum negative pressure solid -liquid separation shale shaker |
| CN206731539U (en) * | 2017-04-28 | 2017-12-12 | 晋江市旺瓜食品有限公司 | A kind of multiprogram watermelon seeds screening plant |
| CN207288002U (en) * | 2017-07-29 | 2018-05-01 | 新昌县勤振机械制造有限公司 | A kind of anticlogging building sand sieving machine |
| CN207222291U (en) * | 2017-08-24 | 2018-04-13 | 浙江远辰三联混凝土沙浆有限公司 | Sand sieving machine |
| CN208288446U (en) * | 2018-01-24 | 2018-12-28 | 黄捷 | A kind of sand screening plant in construction site |
| CN110152982A (en) * | 2018-03-09 | 2019-08-23 | 淄博名堂教育科技有限公司 | A kind of municipal road construction Sand screen |
| CN108435332A (en) * | 2018-06-29 | 2018-08-24 | 李启同 | A kind of sandstone screening plant for building |
| CN108787438A (en) * | 2018-07-16 | 2018-11-13 | 淮北百壹领域建筑科技有限公司 | A kind of building sandstone screening plant and method for sieving |
| CN212596972U (en) * | 2020-04-30 | 2021-02-26 | 张朔 | Screening sand device for construction |
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