CN112474256A - Gravel screening and collecting device and process for highway construction - Google Patents
Gravel screening and collecting device and process for highway construction Download PDFInfo
- Publication number
- CN112474256A CN112474256A CN202011256376.0A CN202011256376A CN112474256A CN 112474256 A CN112474256 A CN 112474256A CN 202011256376 A CN202011256376 A CN 202011256376A CN 112474256 A CN112474256 A CN 112474256A
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- Prior art keywords
- screening
- shell
- gear
- fixedly connected
- worm
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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
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with 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
-
- 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of screening devices, in particular to a gravel screening and collecting device for highway construction, which aims at solving the problems that the screening is time-consuming and labor-consuming and can raise a large amount of dust, and provides the following scheme, the invention is simple and convenient, the sand and stone are put into the feed hopper, the drive motor is started, the conveying roller can carry out the first screening while conveying the sand and stone, and the driving motor can also rotate the arc gear to make the screening frame move back and forth to achieve the purpose of screening in the second step, manual screening is not needed, the screening efficiency is high, and can also discharge into the dust filter box through the aspirator pump dust that the screening in-process produced when screening, prevent that the dust from floating and influencing staff's health.
Description
Technical Field
The invention relates to the technical field of screening devices, in particular to a gravel screening and collecting device and process for highway construction.
Background
The sandstone is a necessary material in the process of road construction, generally can be used only by screening, and the screening is not thorough, so that the sandstone is easy to use, and cannot meet the process requirements when being used in the process of road construction, and the screening of the sandstone plays a very important role in the later road construction.
The screening of grit is generally artifical the completion, and artifical screening grit generally exists the cost higher, and is inefficient, and the screening is incomplete, and current grit sieving mechanism exists the screening incomplete, imprecisely, and the shortcoming of wasting time and energy, moreover at the in-process of screening, will raise a large amount of dusts, not only influences the ambient environment and still can influence staff's health.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a sand screening and collecting device for highway construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gravel screening and collecting device for highway construction comprises a shell, wherein the inner walls of two sides of the shell are fixedly connected with the same hollowed-out metal frame, the top of the shell is provided with a feed hopper communicated with each other, the bottom end of the feed hopper extends into the hollowed-out metal frame, the inner walls of two sides of the hollowed-out metal frame are rotatably connected with the same conveying roller, the rotating shaft of the conveying roller penetrates through the hollowed-out metal frame and the shell and is fixedly connected with a worm wheel, the top of the shell is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a first gear, one side of the shell is fixedly connected with two symmetrical bases, one side, close to each other, of the two bases is rotatably connected with the same worm, the top end of the worm penetrates through the base and is fixedly connected with a second gear, the first, be equipped with the screening subassembly that is used for carrying out the screening to the grit in the shell, the top of shell is equipped with the absorption subassembly that is used for absorbing the dust, one side of shell is equipped with second export and third export, the first stock guide of both sides inner wall fixedly connected with, second stock guide and third stock guide of shell, the bottom of first stock guide extends to in the second export, the bottom of third stock guide extends to in the third export, bottom one side of fretwork metal frame is equipped with first export, one side of shell is equipped with out the flitch.
Preferably, the screening assembly comprises two sliding rods fixed on the inner walls of the two sides of the shell, the outer walls of the two sliding rods are connected with the same screening frame in a sliding manner, a plurality of tension springs are equidistantly arranged on one side of the screening frame, one ends of the tension springs far away from the screening frame are fixedly connected with the inner wall of one side of the shell, one side of the screening frame is fixedly connected with a rack, one end of the rack, which is far away from the screening frame, extends to one side of the shell, one side of the shell is rotatably connected with a rotating shaft, one end of the rotating shaft far away from the worm is fixedly connected with an arc gear, the arc-shaped gear is meshed with the rack, a driving bevel gear is fixedly sleeved on the outer wall of the worm, one end of the rotating shaft, which is close to the worm, is fixedly connected with a driven bevel gear, the driven bevel gear is meshed with the driving bevel gear, and the screening frame is provided with a discharging assembly for discharging raw materials.
Preferably, the discharge assembly is including rotating the dead lever of connection at screening frame both sides inner wall, the fixed cover of outer wall of dead lever is equipped with the sieve, one side fixedly connected with cylinder of screening frame, one side sliding connection of screening frame has the sliding block, the piston rod of cylinder and the top fixed connection of sliding block, the bottom of sliding block and the top sliding connection of sieve.
Preferably, the absorption assembly comprises an air suction pump fixedly connected to the top of the shell, an air suction pipe is fixedly arranged at an air inlet of the air suction pump in a fixing sleeve mode, one end of the air suction pipe extends into the shell, an air outlet pipe is fixedly arranged at an air outlet of the air suction pump in a fixing sleeve mode, the top of the shell is fixedly connected with a dust filter box, and one end of the air outlet pipe extends into the dust filter box.
Preferably, the top inner wall of the second outlet is hinged with a dust-proof curtain, and dust in the shell can be prevented from overflowing out through the dust-proof curtain.
Preferably, the inner wall of one side of the screening frame is fixedly connected with a triangular plate, and the gravel in the screening frame can slide out along the screening plate while the screening plate rotates through the triangular plate, so that the remaining gravel is prevented from remaining in the screening frame.
Preferably, the bottom of sliding block rotates and is connected with the turning block, the bottom of turning block and the bottom sliding connection of sieve, can make the dead lever use the dead lever as the fulcrum rotation through the turning block.
Preferably, a rotating bearing is fixedly embedded in one side of the housing, a rotating shaft is fixedly connected to one end of the conveying roller, the rotating shaft of the conveying roller penetrates through an inner ring of the rotating bearing and is fixedly connected with the inner ring of the rotating bearing, and the friction force of the housing on the rotating shaft of the conveying roller can be reduced through the rotating bearing.
A use method of a gravel screening and collecting device for highway construction comprises the following steps:
s1, putting the gravel into the hollow metal frame from the feed hopper, starting a driving motor to drive a first gear to rotate, enabling the first gear to be meshed with a second gear, enabling the first gear to drive a worm to rotate with the second gear, enabling the worm to be meshed with a worm wheel, enabling the worm to drive the worm wheel to rotate with a conveying roller, driving the gravel in the hollow metal frame to rotate and convey the gravel to the right side while the conveying roller rotates, screening the gravel for the first time in the conveying process, screening fine gravel through the hollow metal frame, and discharging the screened gravel on the dust isolating curtain through a second outlet;
s2, the screened gravel falls on a second guide plate through a first outlet and falls in a screening frame through the second guide plate, the worm drives a driving bevel gear to rotate along with the rotation of a first gear, and the driving bevel gear is meshed with a driven bevel gear, so that the driving bevel gear drives the driven bevel gear, a rotating shaft and an arc gear to simultaneously rotate;
s3, when the screening is completed, the air cylinder is started, the piston rod of the air cylinder pushes the sliding block and the rotating block to move downwards, the rotating block moves downwards to cause the screen plate to start rotating by taking the fixed rod as a fulcrum, the rotating block starts to slide on the screen plate, and the sand and stone on the screening frame flows out along the screen plate and falls on the discharge plate;
s4, starting the air suction pump while screening in the shell, and absorbing dust in the shell through the air suction pipe and discharging the dust into the dust filter box through the air outlet pipe by the air suction pump to prevent the dust from flying and affecting the health of workers.
The invention has the beneficial effects that:
1. throw into the grit from the feeder hopper in the fretwork metal frame, start the first gear of driving motor drive and rotate, first gear and second gear mesh mutually, first gear drives worm and second gear rotation, worm and worm wheel mesh mutually, the worm drives worm wheel and conveying roller and rotates, conveying roller pivoted drives the rotatory right side of grit in the fretwork metal frame simultaneously and carries, can carry out the first time screening to the grit in transportation process, filter tiny grit through the fretwork metal frame, the grit that the screening got off falls on the dust-proof curtain and exports through the second.
2. The grit after the screening falls on the second stock guide through first export, drop in the screening frame through the second stock guide, along with the rotation of first gear, the worm drives the rotation of drive bevel gear, and drive bevel gear meshes with driven bevel gear mutually, therefore drive bevel gear drives driven bevel gear, pivot and bevel gear rotate simultaneously, because bevel gear and rack mesh, bevel gear drives rack and screening frame and moves to the left side, the extension spring begins to stretch, when bevel gear and rack break away from the engaged state, the extension spring will screen the frame and stimulate right, and then can make screening frame round trip movement, can carry out the second step screening with the grit in the screening frame, the grit that screens down falls through the third export discharge on the third stock guide.
3. When the screening is completed, the cylinder is started, the piston rod of the cylinder pushes the sliding block and the rotating block to move downwards, the rotating block moves downwards to cause the screen plate to start to rotate by taking the fixed rod as a fulcrum, the rotating block starts to slide on the screen plate, and sand and stones on the screening frame flow out along the screen plate and fall on the discharge plate.
4. The air suction pump is started when screening is carried out in the shell, and the air suction pump absorbs dust in the shell through the air suction pipe and discharges the dust into the dust filter box through the air outlet pipe, so that the dust is prevented from flying, and the health of workers is influenced.
5. The triangular plate is arranged in the screening frame, so that the sandstone in the screening frame can slide out along the screening plate while the screening plate rotates, and the remaining sandstone is prevented from remaining in the screening frame.
The sand and stone screening machine is simple and convenient, sand and stone are thrown into the feed hopper, the driving motor is started, the conveying roller can carry out primary screening while conveying the sand and stone, the driving motor can also rotate the arc gear, the screening frame can move back and forth to achieve the purpose of secondary screening, manual screening is not needed, screening efficiency is high, dust generated in the screening process can be discharged into the dust filtering box through the suction pump while screening is carried out, and the dust is prevented from floating to affect the health of workers.
Drawings
FIG. 1 is a front cross-sectional view of a sand screening and collecting device for highway construction, which is provided by the invention;
FIG. 2 is a side view of a sand screening and collecting device for road construction according to the present invention;
FIG. 3 is a side sectional view of a sand screening and collecting device for highway construction according to the present invention;
FIG. 4 is an enlarged view of the portion A of the sand screening and collecting device for highway construction provided by the invention;
FIG. 5 is a cross-sectional side view of a screening frame of the sand screening and collecting device for highway construction, which is provided by the invention;
FIG. 6 is a top view of a screening frame of the sand screening and collecting device for highway construction, which is provided by the invention;
fig. 7 is a side view of the sliding block of the sand screening and collecting device for road construction.
In the figure: 1. a housing; 2. a feed hopper; 3. hollowing out the metal frame; 4. a conveying roller; 5. a drive motor; 6. a first gear; 7. a base; 8. a second gear; 9. a worm; 10. a worm gear; 11. a first outlet; 12. a first material guide plate; 13. a second outlet; 14. a dust-proof curtain; 15. a second material guide plate; 16. a slide bar; 17. screening frames; 18. a tension spring; 19. a rack; 20. a rotating shaft; 21. an arc gear; 22. a driven bevel gear; 23. a drive bevel gear; 24. a third material guide plate; 25. a third outlet; 26. fixing the rod; 27. a sieve plate; 28. a cylinder; 29. a slider; 30. rotating the block; 31. a discharge plate; 32. a getter pump; 33. an air intake duct; 34. an air outlet pipe; 35. a dust filter box; 36. a set square; 37. and rotating the bearing.
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.
Example one
Referring to fig. 1-7, a gravel screening and collecting device for road construction comprises a housing 1, wherein the inner walls of two sides of the housing 1 are fixedly connected with a same hollowed metal frame 3, the top of the housing 1 is provided with a feed hopper 2 communicated with the top, the bottom end of the feed hopper 2 extends into the hollowed metal frame 3, the inner walls of two sides of the hollowed metal frame 3 are rotatably connected with a same feed roller 4, the rotating shaft of the feed roller 4 penetrates through the hollowed metal frame 3 and the housing 1 and is fixedly connected with a worm wheel 10, the top of the housing 1 is fixedly connected with a driving motor 5, the output shaft of the driving motor 5 is fixedly connected with a first gear 6, one side of the housing 1 is fixedly connected with two symmetrical bases 7, the side, close to each other, of the two bases 7 is rotatably connected with a same worm 9, the top end of the worm 9 penetrates through the bases 7 and is, worm 9 and worm wheel 10 mesh mutually, be equipped with in the shell 1 and be used for carrying out the screening subassembly that filters to the grit, the top of shell 1 is equipped with the absorption subassembly that is used for absorbing the dust, one side of shell 1 is equipped with second export 13 and third export 25, the first stock guide 12 of the both sides inner wall fixedly connected with of shell 1, second stock guide 15 and third stock guide 24, the bottom of first stock guide 12 extends to in the second export 13, the bottom of third stock guide 24 extends to in the third export 25, bottom one side of fretwork metal frame 3 is equipped with first export 11, one side of shell 1 is equipped with out flitch 31.
Example two
The embodiment is improved on the basis of the first embodiment: the screening assembly comprises two sliding rods 16 fixed on the inner walls of two sides of the shell 1, the outer walls of the two sliding rods 16 are connected with the same screening frame 17 in a sliding manner, a plurality of tension springs 18 are equidistantly arranged on one side of the screening frame 17, one ends of the tension springs 18 far away from the screening frame 17 are fixedly connected with the inner wall of one side of the shell 1, one side of the screening frame 17 is fixedly connected with a rack 19, one end of the rack 19 far away from the screening frame 17 extends to one side of the shell 1, one side of the shell 1 is rotatably connected with a rotating shaft 20, one end of the rotating shaft 20 far away from the worm 9 is fixedly connected with an arc gear 21, the arc gear 21 is meshed with the rack 19, the outer wall of the worm 9 is fixedly sleeved with a driving bevel gear 23, one end of the rotating shaft 20 close to the worm 9 is fixedly connected with a driven bevel gear 22, the driven bevel gear 22 is meshed with the driving bevel gear 23, the screening frame, the outer wall of the fixed rod 26 is fixedly sleeved with a sieve plate 27, one side of the sieve frame 17 is fixedly connected with an air cylinder 28, one side of the sieve frame 17 is slidably connected with a sliding block 29, a piston rod of the air cylinder 28 is fixedly connected with the top end of the sliding block 29, the bottom end of the sliding block 29 is slidably connected with the top of the sieve plate 27, the absorption assembly comprises an air suction pump 32 fixedly connected with the top of the shell 1, an air inlet of the air suction pump 32 is fixedly sleeved with an air suction pipe 33, one end of the air suction pipe 33 extends into the shell 1, an air outlet of the air suction pump 32 is fixedly sleeved with an air outlet pipe 34, the top of the shell 1 is fixedly connected with a dust filter box 35, one end of the air outlet pipe 34 extends into the dust filter box 35, the inner wall of the top of the second outlet 13 is hinged with a dust-isolating curtain 14, the dust in the, when the sieve plate 27 rotates, the sand in the sieve frame 17 can slide out along the sieve plate 27, so that the remaining sand is prevented from remaining in the sieve frame 17, the bottom end of the sliding block 29 is rotatably connected with the rotating block 30, the bottom of the rotating block 30 is slidably connected with the bottom of the sieve plate 27, the rotating block 30 can enable the fixed rod 26 to rotate by taking the fixed rod 26 as a fulcrum, a rotating bearing 37 is fixedly embedded on one side of the shell 1, a rotating shaft is fixedly connected with one end of the conveying roller 4, the rotating shaft of the conveying roller 4 penetrates through the inner ring of the rotating bearing 37 and is fixedly connected with the inner ring of the rotating bearing 37, and the friction force of the shell 1 on the rotating shaft of the conveying roller 4 can be.
A use method of a gravel screening and collecting device for highway construction comprises the following steps:
s1, sand and stone are thrown into the hollow metal frame 3 from the feed hopper 2, the driving motor 5 is started to drive the first gear 6 to rotate, the first gear 6 is meshed with the second gear 8, the first gear 6 drives the worm 9 to rotate with the second gear 8, the worm 9 is meshed with the worm wheel 10, the worm wheel 9 drives the worm wheel 10 to rotate with the conveying roller 4, the conveying roller 4 rotates and simultaneously drives the sand and stone in the hollow metal frame 3 to rotate to the right side, the sand and stone can be screened for the first time in the conveying process, fine sand and stone are screened through the hollow metal frame 3, and the screened sand and stone falls on the dust separation curtain 14 and is discharged through the second outlet 13;
s2, the screened gravel falls on the second guide plate 15 through the first outlet 11, the gravel falls in the screening frame 17 through the second guide plate 15, the worm 9 drives the driving bevel gear 23 to rotate along with the rotation of the first gear 6, and the driving bevel gear 23 is meshed with the driven bevel gear 22, so that the driving bevel gear 23 drives the driven bevel gear 22, the rotating shaft 20 and the arc gear 21 to simultaneously rotate, the arc gear 21 is meshed with the rack 19, the arc gear 21 drives the rack 19 and the screening frame 17 to move towards the left side, the tension spring 18 starts to stretch, when the arc gear 21 is disengaged from the rack 19, the tension spring 18 pulls the screening frame 17 towards the right side, the screening frame 17 can further move back and forth, the gravel in the screening frame 17 can be screened in the second step, and the screened gravel falls on the third guide plate 24 and is discharged through the third outlet 25;
s3, when the screening is completed, the air cylinder 28 is started, the piston rod of the air cylinder 28 pushes the sliding block 29 and the rotating block 30 to move downwards, the rotating block 30 moves downwards to cause the screen plate 27 to start rotating by taking the fixed rod 26 as a fulcrum, the rotating block 30 starts sliding on the screen plate 27, and the sand on the screening frame 17 flows out of the screen plate 27 and falls on the discharging plate 31;
s4, starting the air suction pump 32 while screening in the shell 1, wherein the air suction pump 32 absorbs dust in the shell 1 through the air suction pipe 33 and discharges the dust into the dust filter box 35 through the air outlet pipe 34, so that the dust is prevented from floating and the health of workers is influenced.
However, as is well known to those skilled in the art, the working principle and wiring method of the driving motor 5, the cylinder 28 and the suction pump 32 are common and are conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.
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 should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a grit screening collection device for highway construction, includes shell (1), its characterized in that, the same fretwork metal frame (3) of both sides inner wall fixedly connected with of shell (1), the top of shell (1) is equipped with feeder hopper (2) that are linked together, the bottom of feeder hopper (2) extends to in the fretwork metal frame (3), the both sides inner wall of fretwork metal frame (3) rotates and is connected with same conveying roller (4), the axis of rotation of conveying roller (4) runs through fretwork metal frame (3) and shell (1) and fixedly connected with worm wheel (10), the top fixedly connected with driving motor (5) of shell (1), the output shaft fixedly connected with first gear (6) of driving motor (5), one side fixedly connected with two symmetrical base (7) of shell (1), two one side that base (7) are close to each other rotates and is connected with same worm (9), the top end of the worm (9) penetrates through the base (7) and is fixedly connected with a second gear (8), the first gear (6) is meshed with the second gear (8), the worm (9) is meshed with the worm wheel (10), a screening assembly for screening sand and stone is arranged in the shell (1), an absorption assembly for absorbing dust is arranged at the top of the shell (1), a second outlet (13) and a third outlet (25) are arranged on one side of the shell (1), a first guide plate (12), a second guide plate (15) and a third guide plate (24) are fixedly connected to the inner walls of two sides of the shell (1), the bottom end of the first guide plate (12) extends into the second outlet (13), the bottom end of the third guide plate (24) extends into the third outlet (25), a first outlet (11) is arranged on one side of the bottom of the hollow metal frame (3), one side of the shell (1) is provided with a discharging plate (31).
2. The gravel screening and collecting device for road construction according to claim 1, wherein the screening assembly comprises two sliding rods (16) fixed on the inner walls of the two sides of the shell (1), the outer walls of the two sliding rods (16) are slidably connected with the same screening frame (17), a plurality of tension springs (18) are equidistantly arranged on one side of the screening frame (17), one ends, far away from the screening frame (17), of the tension springs (18) are fixedly connected with the inner wall of one side of the shell (1), one side of the screening frame (17) is fixedly connected with a rack (19), one end, far away from the screening frame (17), of the rack (19) extends to one side of the shell (1), one side of the shell (1) is rotatably connected with a rotating shaft (20), one end, far away from the worm (9), of the rotating shaft (20) is fixedly connected with an arc gear (21), and the arc gear (21) is meshed with the rack (19), the fixed cover of outer wall of worm (9) is equipped with initiative bevel gear (23), one end fixedly connected with driven bevel gear (22) that pivot (20) are close to worm (9), driven bevel gear (22) and initiative bevel gear (23) mesh mutually, screening frame (17) are equipped with the discharge assembly who is used for discharging the raw materials.
3. The gravel screening and collecting device for road construction as claimed in claim 2, wherein the discharging component comprises a fixing rod (26) rotatably connected to the inner walls of two sides of the screening frame (17), a screen plate (27) is fixedly sleeved on the outer wall of the fixing rod (26), a cylinder (28) is fixedly connected to one side of the screening frame (17), a sliding block (29) is slidably connected to one side of the screening frame (17), a piston rod of the cylinder (28) is fixedly connected to the top end of the sliding block (29), and the bottom end of the sliding block (29) is slidably connected to the top end of the screen plate (27).
4. The gravel screening and collecting device for road construction according to claim 3, wherein the absorption assembly comprises a suction pump (32) fixedly connected to the top of the casing (1), a suction pipe (33) is fixedly sleeved at an air inlet of the suction pump (32), one end of the suction pipe (33) extends into the casing (1), an air outlet pipe (34) is fixedly sleeved at an air outlet of the suction pump (32), a dust filter box (35) is fixedly connected to the top of the casing (1), and one end of the air outlet pipe (34) extends into the dust filter box (35).
5. A gravel screening and collecting device for road construction according to claim 1, wherein the second outlet (13) is hinged with a dust-proof curtain (14) on the top inner wall.
6. The gravel screening and collecting device for road construction as claimed in claim 3, wherein a triangular plate (36) is fixedly connected to the inner wall of one side of the screening frame (17).
7. A gravel screening and collecting device for road construction according to claim 3, wherein the bottom end of the sliding block (29) is rotatably connected with a rotating block (30), and the bottom of the rotating block (30) is slidably connected with the bottom of the sieve plate (27).
8. The gravel screening and collecting device for road construction according to claim 1, wherein a rotating bearing (37) is fixedly embedded on one side of the housing (1), a rotating shaft is fixedly connected to one end of the conveying roller (4), and the rotating shaft of the conveying roller (4) penetrates through the inner ring of the rotating bearing (37) and is fixedly connected with the inner ring of the rotating bearing (37).
9. The use method of the sand screening and collecting device for road construction according to any one of claims 1 to 8 is characterized by comprising the following steps:
s1, sand is thrown into the hollow metal frame (3) from the feed hopper (2), the driving motor (5) is started to drive the first gear (6) to rotate, the first gear (6) is meshed with the second gear (8), the first gear (6) drives the worm (9) and the second gear (8) to rotate, the worm (9) is meshed with the worm wheel (10), the worm (9) drives the worm wheel (10) and the conveying roller (4) to rotate, the conveying roller (4) drives the sand in the hollow metal frame (3) to rotate and convey towards the right side simultaneously in a rotating mode, the sand can be screened for the first time in the conveying process, fine sand is screened through the hollow metal frame (3), and the screened sand falls on the dust isolating curtain (14) and is discharged through the second outlet (13);
s2, the screened gravel falls on a second guide plate (15) through a first outlet (11), the gravel falls in a screening frame (17) through the second guide plate (15), a worm (9) drives a driving bevel gear (23) to rotate along with the rotation of a first gear (6), the driving bevel gear (23) is meshed with a driven bevel gear (22), therefore, the driving bevel gear (23) drives the driven bevel gear (22), a rotating shaft (20) and an arc gear (21) to rotate simultaneously, because the arc gear (21) is meshed with a rack (19), the arc gear (21) drives the rack (19) and the screening frame (17) to move towards the left side, a tension spring (18) starts to stretch, when the arc gear (21) is disengaged with the rack (19), the tension spring (18) pulls the screening frame (17) towards the right, further, the screening frame (17) can move back and forth, and the gravel in the screening frame (17) can be screened in the second step, the screened sand falls on a third material guide plate (24) and is discharged through a third outlet (25);
s3, when screening is completed, the air cylinder (28) is started, a piston rod of the air cylinder (28) pushes the sliding block (29) and the rotating block (30) to move downwards, the rotating block (30) moves downwards to cause the screen plate (27) to start to rotate by taking the fixed rod (26) as a fulcrum, the rotating block (30) starts to slide on the screen plate (27), and sand on the screening frame (17) flows out along the screen plate (27) and falls on the discharging plate (31);
s4, the air suction pump (32) is started while screening is carried out in the shell (1), dust in the shell (1) is absorbed by the air suction pump (32) through the air suction pipe (33) and is discharged into the dust filtering box (35) through the air outlet pipe (34), and the dust is prevented from floating and affecting the health of workers.
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| CN114082639A (en) * | 2021-11-22 | 2022-02-25 | 广东科学技术职业学院 | Grit sorting unit for civil engineering |
| CN114345461A (en) * | 2021-12-17 | 2022-04-15 | 中国建筑第二工程局有限公司 | Building engineering gravel crushing device and construction method thereof |
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