CN115283066A - Grit reducing mechanism with screening mechanism - Google Patents

Grit reducing mechanism with screening mechanism Download PDF

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Publication number
CN115283066A
CN115283066A CN202210904476.2A CN202210904476A CN115283066A CN 115283066 A CN115283066 A CN 115283066A CN 202210904476 A CN202210904476 A CN 202210904476A CN 115283066 A CN115283066 A CN 115283066A
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CN
China
Prior art keywords
crushing
box
screening
fixedly connected
communicated
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Pending
Application number
CN202210904476.2A
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Chinese (zh)
Inventor
宋耀文
许嘉辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiagang Yuecheng Building Materials Technology Co ltd
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Zhangjiagang Yuecheng Building Materials Technology Co ltd
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Priority to CN202210904476.2A priority Critical patent/CN115283066A/en
Publication of CN115283066A publication Critical patent/CN115283066A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/02Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary 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
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/28Details
    • B02C4/286Feeding devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/28Details
    • B02C4/42Driving mechanisms; Roller speed control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04Preventing 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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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to the technical field of ore production, in particular to a gravel crushing device with a screening mechanism. According to the invention, the first crushing mechanism and the second crushing mechanism are arranged to realize multi-stage crushing processing of the gravel, the crushing processing quality is improved, the screen plate and the vibrating motor are arranged to screen the gravel, the uniformity of gravel particles is improved, the feeding mechanism is arranged to guide unqualified materials into the feeding hopper again for repeated processing, the automation degree is higher, the efficiency is improved, the dust removal mechanism is arranged to achieve the dust removal effect, and water resources are saved.

Description

Grit reducing mechanism with screening mechanism
Technical Field
The invention relates to the technical field of ore production, in particular to a sand and stone crushing device with a screening mechanism.
Background
The sandstone refers to a loose mixture of sand grains and crushed stones, geologically, mineral or rock particles with the particle size of 0.074-2 mm are called sand, and mineral or rock particles with the particle size of more than 2mm are called gravel or cobble (the difference is that the gravel or the cobble are ground to different degrees and the detailed terms such as conglomerate and sandstone are seen), mineral resources are the material basis for the survival and development of the contemporary human, even in the present day when the information technology is developed at high speed, the mineral resources still play an irreplaceable role in the daily life of the human, and in the mining production, the ore is often required to be further processed and utilized, particularly, the ore is crushed and sieved.
In a Chinese patent, an ore crushing and screening machine with a dust removal function (patent number: CN 109395867A), the invention skillfully integrates ore crushing and screening, improves the production efficiency, has reasonable structural design, effectively reduces the dust content in the equipment by using an atomization dust removal system, but only one crushing mechanism is arranged for the ore in the device, has low crushing processing efficiency and poor crushing effect, secondly, uses the atomization dust removal system to remove dust, wastes water resources seriously, and secondly, backfills unqualified gravels after being taken out to perform repeated crushing processing, has complicated steps, wastes manpower and affects the processing efficiency. Accordingly, one skilled in the art provides a sand crushing device with a screening mechanism to solve the problems set forth in the background above.
Disclosure of Invention
The invention aims to provide a sand crushing device with a screening mechanism, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a gravel crushing device with a screening mechanism comprises a first crushing box, wherein a feeding hopper is communicated with the upper side of the first crushing box, the first crushing box is internally provided with the first crushing mechanism, the lower side of the first crushing box is communicated with a second crushing box, the second crushing box is internally provided with the second crushing mechanism, the lower side of the second crushing box is communicated with the screening box, two vertically and symmetrically arranged concave frames are fixedly connected to two sides of the bottom of the screening box, an obliquely arranged screen plate is fixedly connected to the screening box, the bottom of the screening box is communicated with a discharging port, a vibrating motor is fixedly connected to the front side of the screening box, a material guide pipe is communicated with one side of the screening box at the lower end of the screen plate, a vertically arranged material feeding cylinder is communicated with one end of the material feeding cylinder, a material feeding mechanism is arranged in the material feeding cylinder, a material returning pipe is communicated with the upper portion of one side of the material feeding cylinder, one end of the material returning pipe, which is far away from the material feeding cylinder, a dust removing mechanism is communicated with one side of the dust removing mechanism, and fixedly connected with the concave frames;
first rubbing crusher constructs and second rubbing crusher constructs for the looks isostructure, first rubbing crusher constructs including fixing the driving motor in first crushing case one side, driving motor's main shaft end runs through and extends to in the first crushing case and the first bull stick of fixedly connected with, the first crushing roller of fixedly connected with on the first bull stick, and the one end that driving motor was kept away from to first bull stick runs through and extends to the outside of first crushing case and the first gear of fixedly connected with, one side inner wall that first crushing case is close to driving motor rotates through the bearing spare and is connected with the second bull stick with first bull stick parallel arrangement, and the broken roller of fixedly connected with second on the second bull stick, the one end that the rotation piece was kept away from to the second bull stick runs through the outside and the fixedly connected with second gear that extend to first crushing case, and first gear is connected with the meshing of second gear.
As a further aspect of the invention: the feeding mechanism comprises a servo motor fixed at the upper end of the upper charging barrel, a main shaft end of the servo motor penetrates through a spiral feeding rod which extends into the upper charging barrel and is fixedly connected with a vertical device, and the inner wall of the lower end of the upper charging barrel is rotatably connected with the lower end of the spiral feeding rod through a bearing seat.
As a further aspect of the invention: the dust removal mechanism comprises a negative pressure box fixed on one side of the screening box and a dust collecting net box fixed on the concave frame, wherein a dust suction pipe is communicated with the upper side of the negative pressure box, one end of the dust suction pipe is positioned above the screen plate, one side of the screening box is communicated and arranged, a negative pressure fan is arranged in the negative pressure box, a dust guide pipe is communicated and arranged on the lower side of the negative pressure box, and the lower end of the dust guide pipe is communicated and arranged with the dust collecting net box.
As a further aspect of the invention: the inner wall of the communication port of the screening box and the dust collection pipe is fixedly connected with an arc-shaped blocking net.
As a further aspect of the invention: the equal fixedly connected with safety cover in one side of first crushing case and the crushing case of second, first gear and second gear all are located the safety cover.
As a further aspect of the invention: the inner walls of the two sides of the first crushing box and the second crushing box are fixedly connected with two guide plates which are obliquely and symmetrically arranged, and the two guide plates are respectively positioned above the first crushing roller and the second crushing roller.
As a further aspect of the invention: the spacing between the first and second crushing rollers in the first crushing box is greater than the spacing between the first and second crushing rollers in the second crushing box.
As a further aspect of the invention: the bottom sections of the first crushing box, the second crushing box and the screening box are both arranged in a V shape.
As a further scheme of the invention: go up the front side fixedly connected with control switch of feed cylinder, and the input of first rubbing crusher mechanism, second rubbing crusher mechanism, feed mechanism, dust removal mechanism and vibrating motor respectively with control switch electric connection.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up first rubbing crusher and second rubbing crusher, with the grit raw materials by feeder hopper department, add in first crushing case, start driving motor work, it rotates to drive first bull stick, and then drive first crushing roller and rotate, drive first gear revolve simultaneously, because first gear and second gear engagement, and then drive the second bull stick and rotate, thereby drive first crushing roller and second crushing roller synchromesh and rotate, and then realize the preliminary crushing to the grit, then the rubble falls to the second in smashing the case, on the same principle, carry out crushing processing once more, thereby improve crushing processing's quality.
2. Through setting up screen cloth board and vibrating motor, the grit granule after smashing falls to the screen cloth board in the screening case on, and the even less grit of granule sees through the screen cloth board and is discharged by the discharge gate, obtains the grit that has processed, screens the grit, and vibrating motor improves the screening efficiency, improves grit granule homogeneity.
3. Through setting up feed mechanism, the great grit of granule is through the screen cloth board interception, by the leading-in feed cylinder of going up of passage, starts servo motor work, and then drives spiral material loading pole and rotate, can force the material of going up the feed cylinder to carry and shift up, by the feed back pipe in leading-in feeder hopper again, repeated processing, degree of automation is higher, reduces artifical step, uses manpower sparingly more, improves machining efficiency.
4. Through setting up dust removal mechanism, start the negative pressure fan work in the negative pressure case, produce wind-force negative pressure, collect the storage in the dust that will sieve the case through the dust absorption pipe by leading into the dust collecting net case of dirt pipe, reach the dust removal effect, the effect is better, saves the water resource.
Drawings
FIG. 1 is a schematic perspective view of a sand crushing apparatus with a sifting mechanism;
FIG. 2 is a schematic sectional top view of a sand crushing apparatus with a sifting mechanism at a first crushing box;
FIG. 3 is a schematic right sectional view of a sand crushing apparatus with a sifting mechanism, wherein the first crushing box and the second crushing box are arranged at the right side;
FIG. 4 is a schematic view of a cross-sectional front view of a screen box of a sand crushing apparatus having a screen mechanism;
FIG. 5 is a schematic sectional view of the upper feed barrel of the sand crushing apparatus with a sieving mechanism.
In the figure: 1. a first crushing tank; 2. a feed hopper; 3. a second crushing tank; 4. screening the box; 5. a concave frame; 6. a screen plate; 7. a discharge port; 8. a vibration motor; 9. a material guide pipe; 10. feeding a material barrel; 11. a material return pipe; 12. a drive motor; 13. a first rotating lever; 14. a first crushing roller; 15. a first gear; 16. a second rotating rod; 17. a second crushing roller; 18. a second gear; 19. a servo motor; 20. a screw feeding rod; 21. a negative pressure tank; 22. a dust collecting net cage; 23. a dust collection pipe; 24. a negative pressure fan; 25. a dust guide pipe; 26. an arc-shaped blocking net; 27. a protective cover; 28. a material guide plate; 29. and controlling the switch.
Detailed Description
Referring to fig. 1 to 5, in the embodiment of the present invention, a gravel crushing device with a sieving mechanism comprises a first crushing box 1, a feed hopper 2 is arranged on the upper side of the first crushing box 1 in a communicating manner, a gravel inlet is arranged, the first crushing box 1 is provided with the first crushing mechanism, the lower side of the first crushing box 1 is provided with a second crushing box 3 in a communicating manner, the second crushing box 3 is provided with the second crushing mechanism, the lower side of the second crushing box 3 is provided with a sieving box 4 in a communicating manner, two vertically and symmetrically arranged concave frames 5 are fixedly connected to two sides of the bottom of the sieving box 4, the support is stable, a obliquely arranged sieve plate 6 is fixedly connected to the sieving box 4, the bottom of the sieving box 4 is provided with a discharge port 7 in a communicating manner, a vibration motor 8 is fixedly connected to the front side of the sieving box 4, crushed sandstone particles fall onto a screen plate 6 in a screening box 4, the sandstone with uniform and small particles is discharged from a discharge port 7 through the screen plate 6 to obtain processed sandstone, the sandstone is screened, the screening efficiency is improved by a vibrating motor 8, the uniformity of the sandstone particles is improved, one side of the screening box 4 at the lower end of the screen plate 6 is communicated with a material guide pipe 9, one end, away from the screening box 4, of the material guide pipe 9 is communicated with a vertically arranged material feeding barrel 10, a material feeding mechanism is arranged in the material feeding barrel 10, the upper part of one side of the material feeding barrel 10 is communicated with a material return pipe 11, one end, away from the material feeding barrel 10, of the material return pipe 11 is communicated with a material feeding hopper 2, one side of the screening box 4 is communicated with a dust removing mechanism, and one end of the dust removing mechanism is fixedly connected with a concave frame 5;
first rubbing crusher constructs and second rubbing crusher constructs for the same structure, first rubbing crusher constructs including fixing the driving motor 12 in first crushing case 1 one side, the main shaft end of driving motor 12 runs through and extends to in first crushing case 1 and the first bull stick 13 of fixedly connected with, fixedly connected with first crushing roller 14 on the first bull stick 13, and the one end that driving motor 12 was kept away from to first bull stick 13 runs through and extends to the outside of first crushing case 1 and fixedly connected with first gear 15, one side inner wall that first crushing case 1 is close to driving motor 12 is rotated through the bearing spare and is connected with second bull stick 16 with first bull stick 13 parallel arrangement, and fixedly connected with second crushing roller 17 on second bull stick 16, the one end that second bull stick 16 kept away from the rotation piece runs through and extends to the outside of first crushing case 1 and fixedly connected with second gear 18, and first gear 15 is connected with second gear 18 meshing, with grit raw materials by feeder hopper 2 department, add in first crushing case 1, start driving first bull stick 13 to rotate, and then drive the primary crushing roller 14, thereby the primary crushing roller 15 and the second grinding roller 15, thereby the primary crushing roller 15 and the grinding roller 15 mesh improvement of the primary crushing quality.
As shown in fig. 5: the feeding mechanism comprises a servo motor 19 fixed at the upper end of an upper charging barrel 10, a main shaft end of the servo motor 19 penetrates through and extends into the upper charging barrel 10 and is fixedly connected with a vertically arranged spiral feeding rod 20, the inner wall of the lower end of the upper charging barrel 10 is rotatably connected with the lower end of the spiral feeding rod 20 through a bearing seat, gravels with larger particles are intercepted by a screen plate 6 and are guided into the upper charging barrel 10 through a material guide pipe 9, the servo motor 19 is started to work, the spiral feeding rod 20 is driven to rotate, the materials of the upper charging barrel 10 can be forcibly conveyed and moved upwards, the materials are guided into a feeding hopper 2 again through a material return pipe 11, and the processing is repeated;
as shown in fig. 1 and 4: the dust removing mechanism comprises a negative pressure box 21 fixed on one side of the screening box 4 and a dust collecting net box 22 fixed on the concave frame 5, a dust suction pipe 23 is communicated with the upper side of the negative pressure box 21, one end of the dust suction pipe 23 is communicated with one side of the screening box 4 positioned above the screen plate 6, a negative pressure fan 24 is arranged in the negative pressure box 21, a dust guide pipe 25 is communicated with the lower side of the negative pressure box 21, the lower end of the dust guide pipe 25 is communicated with the dust collecting net box 22, the negative pressure fan 24 in the negative pressure box 21 is started to work to generate wind power negative pressure, dust in the screening box 4 is guided into the dust collecting net box 22 through the dust guide pipe 25 via the dust suction pipe 23 for collection and storage, the dust removing effect is achieved, the effect is better, and water resources are saved;
as shown in fig. 4: the inner wall of the communication port of the screening box 4 and the dust suction pipe 23 is fixedly connected with an arc-shaped blocking net 26 to prevent sand and stones from being sucked into the dust suction pipe 23;
as shown in fig. 1 and 2: one sides of the first crushing box 1 and the second crushing box 3 are fixedly connected with a protective cover 27, and the first gear 15 and the second gear 18 are positioned in the protective cover 27 and play a role in protection;
as shown in fig. 3: two guide plates 28 which are obliquely and symmetrically arranged are fixedly connected to the inner walls of the two sides of the first crushing box 1 and the second crushing box 3, and the two guide plates 28 are respectively positioned above the first crushing roller 14 and the second crushing roller 17, so that sand and stones can be conveniently guided between the first crushing roller 14 and the second crushing roller 17;
as shown in fig. 3: the distance between the first crushing roller 14 and the second crushing roller 17 in the first crushing box 1 is larger than the distance between the first crushing roller 14 and the second crushing roller 17 in the second crushing box 3, so that the crushing processing quality is higher;
as shown in fig. 1 and 3: the bottom sections of the first crushing box 1, the second crushing box 3 and the screening box 4 are arranged in a V shape, so that centralized blanking is facilitated;
as shown in fig. 1: go up the front side fixedly connected with control switch 29 of feed cylinder 10, and the input of first rubbing crusher mechanism, second rubbing crusher mechanism, feed mechanism, dust removal mechanism and vibrating motor 8 respectively with control switch 29 electric connection, external power source, intelligence is controlled, for prior art.
The working principle of the invention is as follows: when the device is used for crushing and screening sand, sand raw materials are added into the first crushing box 1 from the feed hopper 2, the driving motor 12 is started to work, the first rotating rod 13 is driven to rotate, the first crushing roller 14 is driven to rotate, and the first gear 15 is driven to rotate at the same time, the first gear 15 is meshed with the second gear 18, so that the second rotating rod 16 is driven to rotate, the first crushing roller 14 and the second crushing roller 17 are driven to synchronously mesh and rotate, preliminary crushing of the sand is realized, then the crushed stone falls into the second crushing box 3, and similarly, secondary crushing processing is carried out, so that the crushing processing quality is improved;
crushed sandstone particles fall onto a screen plate 6 in a screening box 4, the sandstone with uniform and small particles is discharged from a discharge port 7 through the screen plate 6 to obtain processed sandstone, the sandstone is screened, the screening efficiency is improved by a vibrating motor 8, the sandstone with large particles is intercepted by the screen plate 6, the sandstone is guided into a feeding cylinder 10 by a material guide pipe 9, a servo motor 19 is started to work, and then a spiral feeding rod 20 is driven to rotate, the material of the feeding cylinder 10 can be forcibly conveyed and moved upwards, the material can be guided into a feeding hopper 2 again by a material return pipe 11, the processing is repeated, the degree of automation is higher, manual steps are reduced, more manpower is saved, the processing efficiency is improved, and then a negative pressure fan 24 in a negative pressure box 21 is started to work during processing to generate wind negative pressure, dust in the screening box 4 is guided into a dust collection net box 22 by a dust guide pipe 25 through a dust guide pipe 23 to be collected and stored, so that the dust removal effect is better and the dust saving effect is achieved.
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 (9)

1. A sand and stone crushing device with a screening mechanism comprises a first crushing box (1) and is characterized in that a feed hopper (2) is communicated with the upper side of the first crushing box (1), the first crushing box (1) is internally provided with the first crushing mechanism, the lower side of the first crushing box (1) is communicated with a second crushing box (3), the second crushing box (3) is internally provided with a second crushing mechanism, the lower side of the second crushing box (3) is communicated with a screening box (4), two vertically and symmetrically arranged concave frames (5) are fixedly connected with the two sides of the bottom of the screening box (4), a screen plate (6) is fixedly connected with the screening box (4) in an inclined manner, the bottom of the screening box (4) is communicated with a discharge port (7), a vibrating motor (8) is fixedly connected with the front side of the screening box (4), a material guide pipe (9) is communicated with one side of the screening box (4) at the lower end of the screen plate (6), a material return pipe (10) is arranged at one end, which is far away from the screening box (4), a dust removal material pipe (10) is communicated with the feed hopper (10), and a dust removal material pipe (10) is arranged on one side of the feed hopper (10) and is communicated with the feed hopper (10), one end of the dust removing mechanism is fixedly connected with the concave frame (5);
first rubbing crusher constructs and second rubbing crusher constructs for the looks isostructure, first rubbing crusher constructs including fixing driving motor (12) in first crushing case (1) one side, the main shaft end of driving motor (12) runs through and extends to in first crushing case (1) and first bull stick (13) of fixedly connected with, first crushing roller (14) of fixedly connected with is gone up in first bull stick (13), and the one end that driving motor (12) were kept away from in first bull stick (13) runs through and extends to the outside of first crushing case (1) and first gear (15) of fixedly connected with, one side inner wall that first crushing case (1) are close to driving motor (12) rotates through the bearing piece and is connected with second bull stick (16) with first bull stick (13) parallel arrangement, and fixedly connected with second crushing roller (17) on second bull stick (16), the one end that the rotation piece was kept away from in second bull stick (16) runs through and extends to the outside of first crushing case (1) and fixedly connected with second gear (18), and first gear (15) are connected with first gear (18) meshing.
2. A sand and stone crushing device with a screening mechanism according to claim 1, characterized in that the feeding mechanism comprises a servo motor (19) fixed on the upper end of the upper charging barrel (10), the main shaft end of the servo motor (19) extends into the upper charging barrel (10) and is fixedly connected with a vertically arranged spiral feeding rod (20), and the inner wall of the lower end of the upper charging barrel (10) is rotatably connected with the lower end of the spiral feeding rod (20) through a bearing seat.
3. The gravel crushing device with the screening mechanism is characterized in that the dust removing mechanism comprises a negative pressure box (21) fixed on one side of the screening box (4) and a dust collecting net box (22) fixed on the concave frame (5), a dust suction pipe (23) is communicated with the upper side of the negative pressure box (21), one end of the dust suction pipe (23) is communicated with one side of the screening box (4) above the screen plate (6), a negative pressure fan (24) is arranged in the negative pressure box (21), a dust guide pipe (25) is communicated with the lower side of the negative pressure box (21), and the lower end of the dust guide pipe (25) is communicated with the dust collecting net box (22).
4. A sand crushing device with a screening mechanism according to claim 3, characterized in that the inner wall of the communication opening of the screening box (4) and the dust suction pipe (23) is fixedly connected with an arc-shaped blocking net (26).
5. A sand crushing device with a screening mechanism according to claim 1, characterised in that a protecting cover (27) is fixedly connected to one side of each of the first crushing box (1) and the second crushing box (3), and the first gear (15) and the second gear (18) are both located in the protecting cover (27).
6. A gravel crushing device with a screening mechanism according to claim 1, characterized in that two obliquely and symmetrically arranged material guiding plates (28) are fixedly connected to the inner walls of the two sides of the first crushing box (1) and the second crushing box (3), and the two material guiding plates (28) are respectively positioned above the first crushing roller (14) and the second crushing roller (17).
7. A sand crushing device with a screening mechanism according to claim 1, characterised in that the distance between said first crushing roller (14) and said second crushing roller (17) in the first crushing box (1) is greater than the distance between said first crushing roller (14) and said second crushing roller (17) in the second crushing box (3).
8. A sand crushing device with a screening mechanism according to claim 1 characterized in that the bottom sections of the first crushing box (1), the second crushing box (3) and the screening box (4) are both V-shaped.
9. A sand and stone crushing device with a screening mechanism according to claim 1, characterized in that the front side of the feeding barrel (10) is fixedly connected with a control switch (29), and the input ends of the first crushing mechanism, the second crushing mechanism, the feeding mechanism, the dust removing mechanism and the vibration motor (8) are respectively and electrically connected with the control switch (29).
CN202210904476.2A 2022-07-29 2022-07-29 Grit reducing mechanism with screening mechanism Pending CN115283066A (en)

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Application Number Priority Date Filing Date Title
CN202210904476.2A CN115283066A (en) 2022-07-29 2022-07-29 Grit reducing mechanism with screening mechanism

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117181368A (en) * 2023-10-25 2023-12-08 连云港恒鑫通矿业有限公司 Wet-type permanent magnet drum type magnetic separator with crushing function for mining engineering
CN117427719A (en) * 2023-10-24 2024-01-23 浙江恒合瑞建设工程有限公司 Efficient production device for asphalt waste powder for municipal road and application method

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