CN216323140U - Automatic sand sieving device with multiple particle sizes - Google Patents

Automatic sand sieving device with multiple particle sizes Download PDF

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Publication number
CN216323140U
CN216323140U CN202122540765.2U CN202122540765U CN216323140U CN 216323140 U CN216323140 U CN 216323140U CN 202122540765 U CN202122540765 U CN 202122540765U CN 216323140 U CN216323140 U CN 216323140U
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China
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sand
roller
screening
screen
feeding
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CN202122540765.2U
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Chinese (zh)
Inventor
白立强
路强
郭新强
李晓兵
史晋华
韩冬冬
张君
王小雷
郭亚飞
崔希勇
陈诚
王彩虹
杨挺挺
王�锋
董迎春
温涛
姜鑫
郭伟
崔智超
陈江亮
王恩帅
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Shanxi Water Conservancy Construction Engineering Bureau Co ltd
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Shanxi Water Conservancy Construction Engineering Bureau Co ltd
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Priority to CN202122540765.2U priority Critical patent/CN216323140U/en
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Abstract

The utility model belongs to the technical field of sand screening equipment, and particularly relates to a multi-particle-size automatic sand screening device which comprises a feeding mechanism, a multi-section screening mechanism, a circulating screening mechanism and a storage mechanism, wherein the multi-section screening mechanism comprises a roller, a rack and a roller driving mechanism, the wall of the roller is formed by sequentially and seamlessly connecting a plurality of sections of screen meshes with different apertures, the plurality of sections of screen meshes of the roller are sequentially arranged according to the aperture from thin to thick, the roller is obliquely and downwards rotatably arranged on the rack from a fine screen mesh end, discharging valves are arranged on corresponding sand collecting hoppers below the plurality of sections of screen meshes, the sand collecting hoppers are communicated with the circulating screening mechanism through discharging pipes except the sand collecting hoppers below the finest aperture screen meshes, the discharging holes of the circulating screening mechanism are connected to the feeding mechanism, valves are arranged on the discharging pipes, and the discharging holes of the roller are communicated with the storage mechanism, the sand screening machine has the advantages of high sand screening efficiency, good quality, small loss of fine sand, capability of distinguishing and screening sand particle sizes and less dust emission.

Description

Automatic sand sieving device with multiple particle sizes
Technical Field
The utility model belongs to the technical field of sand screening equipment, and particularly relates to a multi-particle-size automatic sand screening device.
Background
The sand is an essential material in construction of a plurality of industries and plays an important role in engineering construction, but the sand transported to a construction site from a sand mining plant often contains sand with different particle sizes, even larger stones, garbage and the like, so that the sand needs to be screened before use, and in addition, the particle sizes of the required sand are different for different projects. The existing sand screening device is commonly used in two types: one is a flat plate type vibrating screen, which screens through vibration or back and forth movement, the mode can carry out multistage screening, but the occupied area is large, the equipment structure is complex, the efficiency is low, dust is large in the sand screening process and pollutes the environment, the other is a drum screen, sand can be quickly separated during centrifugal rotation through rotating the drum screen, the efficiency of the mode is higher, but the mode can only carry out one-time screening but can not carry out multi-grain-size screening, for example, CN112718450A discloses an automatic sand screening device, the automatic feeding is carried out through a conveying device, a motor drives the drum-shaped screen to roll, so that fine sand falls to a fine sand pool below, the utility model can not distinguish the grain size, the screen needs to be replaced when the requirement of more sand screening is met, and in the process of quick sand screening, a part of fine sand flows into coarse sand, so that the loss of fine sand is large, and the sand screening efficiency is influenced.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide the multi-particle-size automatic sand screening device which is simple in structure, low in cost, high in sand screening efficiency, capable of rapidly distinguishing and screening sand particle sizes and less in dust emission.
The purpose of the utility model is realized by the following technical scheme: a multi-particle-size automatic sand screening device comprises a feeding mechanism, a multi-segment screening mechanism for screening sand with multiple particle sizes, a circulating screening mechanism for screening sand with coarse particle sizes, a garbage and stone storage mechanism, wherein the multi-segment screening mechanism comprises a roller, a rack for supporting the roller and a roller driving mechanism, the wall of the roller is formed by sequentially and seamlessly connecting a plurality of segments of screen meshes with different apertures, the plurality of segments of screen meshes of the roller are sequentially arranged from thin to thick according to the apertures, the roller is obliquely and rotatably arranged on the rack from one end with a fine screen mesh aperture to one end with a thick screen mesh aperture downwards, the roller is connected and driven by the roller driving mechanism, a discharge port of the feeding mechanism is communicated with a feed port of the roller, corresponding sand collecting hoppers are respectively arranged below the plurality of screen meshes, each sand collecting hopper is provided with a discharge valve, and the sand collecting hoppers corresponding to the plurality of screen meshes are communicated with the circulating screening mechanism through discharge pipes except the sand collecting hoppers below the finest screen mesh aperture, the discharge port of the circulating screening mechanism is connected to the feeding mechanism, a valve is arranged on the discharge pipe, and the discharge port of the roller is communicated with the garbage and stone storage mechanism.
Preferably, the roller driving mechanism comprises a motor, a speed reducer, carrier roller structures and a gear transmission structure, the carrier roller structures are arranged at two ends of the roller on the rack, the gear transmission structure is arranged in the middle of the roller, and the gear transmission structure is driven by the motor through the speed reducer.
Preferably, feeding mechanism includes material loading belt feeder, feeder hopper and connects the unloading pipe in the feeder hopper export, material loading belt feeder export with the feeder hopper feed inlet is linked together, the feeder hopper export is provided with electric valve or valve.
Preferably, the circulating screening mechanism is a multi-stage belt conveyor, and the discharge end of the multi-stage belt conveyor is communicated with the feeding belt conveyor.
Preferably, the valve on the discharge pipe and the discharge valve of the sand collecting hopper are both electric and are connected with the PLC controller.
Preferably, the driving motors of the roller, the feeding belt conveyor and the multi-stage belt conveyor are all connected with the PLC.
Preferably, an annular sand blocking plate is arranged between two adjacent sections of the screens, the longitudinal section of the annular sand blocking plate is a triangle with two base angles being acute angles, and the height of the triangle is not more than 2 cm.
Preferably, the roller is composed of three sections of screens with different apertures, the sand collecting hopper corresponding to the second section of screen and the third section of screen is communicated with the circulating screening mechanism, and coarse sand flowing out of the sand collecting hopper is conveyed to the feeding mechanism through the circulating screening mechanism, so that the sand is screened again.
Preferably, the three different mesh screens have different lengths, the first fine sand screen occupies 4/7 of the length of the roller, the second screen occupies 2/7 of the length of the roller, and the third screen occupies 1/7 of the length of the roller.
Preferably, the longitudinal section triangle of the annular sand blocking plate is an isosceles triangle with a right angle vertex angle.
Preferably, the upper half parts of the sand collecting hoppers corresponding to the three sections of screens are communicated with each other, and the last sand collecting hopper is communicated with the suction opening of the negative pressure fan through the opening on the side wall.
In the utility model, the discharge port of the feeding mechanism is communicated with the feed port of the roller, sand to be screened enters the roller from the discharge port of the feeding mechanism, the wall of the roller is formed by seamlessly connecting a plurality of sections of screen meshes with different apertures, the screen meshes with different apertures can screen out corresponding sand with multiple particle sizes, the plurality of sections of screen meshes of the roller are sequentially arranged according to the apertures from thin to thick, the roller is obliquely and rotatably arranged on the frame from one end with a thin screen mesh aperture to one end with a thick aperture, the roller rolls to enable the sand to be screened in multiple stages according to the apertures from thin to thick through the plurality of sections of screen meshes under the action of gravity, corresponding sand collecting hoppers are respectively arranged below the plurality of sections of screen meshes, the sand collecting hoppers are respectively provided with discharge valves, so as to facilitate discharging or further screening according to requirements, and the sand collecting hoppers corresponding to the plurality of screen meshes are communicated with the circulating screening mechanism through discharge pipes except the sand collecting hoppers below the screen mesh with the smallest aperture, the discharging pipe is provided with a valve, when coarse sand needs to be further screened, the discharging valve is closed, the valve on the corresponding discharging pipe is opened, the coarse sand is conveyed to the feeding mechanism for secondary screening through the circulating screening mechanism, sand with different particle sizes can be directly obtained through the multi-section screens with different apertures, meanwhile, the coarse sand can be circularly screened according to needs, the loss of fine sand is reduced, the sand screening efficiency and quality are improved, the automation degree is high, and time and labor are saved.
Has the advantages that: the sand screening device has the advantages of simple structure, low cost, high sand screening efficiency, good quality, small loss of fine sand, capability of distinguishing and screening sand particle sizes and less dust emission.
Drawings
FIG. 1: the structure of embodiment 1 of the utility model is schematically shown;
FIG. 2: the installation structure of the sand collecting hopper corresponding to the second and third section screens in the embodiment 1 of the utility model is shown schematically;
FIG. 3: a schematic plan view of a drum according to embodiment 2 of the present invention;
FIG. 4: the installation position structure of the annular sand blocking plate in the embodiment 2 of the utility model is schematically shown.
In the figure: 1. the automatic garbage screening machine comprises a feeding mechanism, 2 a multi-section screening mechanism, 3 a circulating screening mechanism, 4 a garbage and stone storage mechanism, 11 a feeding belt conveyor, 12 a feeding hopper, 13 a discharging pipe, 14 a valve, 21 a roller, 22 a rack, 23 a roller driving mechanism, 24 a screen, 25 a carrier roller structure, 26 a gear transmission structure, 27 a sand collecting hopper, 28 an annular sand blocking plate, 31 a multi-stage belt conveyor, 241 a second section screen, 242 a third section screen, 243 a first section fine sand screen, 271 a discharging valve, 272 a discharging pipe, 273 a valve and 274 a negative pressure fan.
Detailed Description
The following is a detailed description of the present invention for further explanation. The utility model is not limited to the claims, and all equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields using the contents of the specification and the drawings are included in the scope of the utility model.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout of the drawings in the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction in the drawings of the specification.
Embodiment 1, referring to fig. 1 and 2, a multi-particle-size automatic sand sieving device includes a feeding mechanism 1, a multi-segment sieving mechanism 2 for sieving sand with multiple particle sizes, a circulating sieving mechanism 3 for sieving sand with coarse particle sizes, and a garbage and stone storage mechanism 4, wherein the multi-segment sieving mechanism 2 includes a roller 21, a frame 22 for supporting the roller, and a roller driving mechanism 23, the wall of the roller 21 is formed by sequentially and seamlessly connecting a plurality of segments of screens 24 with different pore sizes, the plurality of segments of screens 24 of the roller 21 are sequentially arranged according to the pore sizes from fine to coarse, the roller 21 is rotatably mounted on the frame 22 from one end with a fine pore size to one end with a coarse pore size in an inclined downward direction, carrier roller structures 25 are arranged at two end portions of the roller 21 on the frame 22, a gear transmission structure 26 is arranged in the middle portion of the roller 21, the gear transmission structure 26 is driven by a motor through connection, the discharge gate of feeding mechanism 1 with the feed inlet of cylinder 21 is linked together, and multistage screen cloth 24 below sets up corresponding collection sand fill 27 respectively, all be equipped with discharge valve 271 on the collection sand fill 27, the collection sand fill 27 that corresponds to multistage screen cloth 24 all is linked together with circulation screening mechanism 3 through discharge tube 272 except that being located the finest screen cloth in aperture below, the discharge gate that circulation screening mechanism 3 was connected to feeding mechanism 1, be provided with valve 273 on the discharge tube 272, the feed opening of cylinder 21 with rubbish and stone storage mechanism 4 are linked together.
The feeding mechanism 1 comprises a feeding belt conveyor 11, a feeding hopper 12 and a discharging pipe 13 connected to the outlet of the feeding hopper 12, the outlet of the feeding belt conveyor 11 is communicated with the feeding port of the feeding hopper 12, a valve 14 is arranged at the outlet of the feeding hopper 12, the circulating screening mechanism 3 is a multi-stage belt conveyor 31, and the discharging end of the multi-stage belt conveyor 31 is communicated with the feeding belt conveyor 11.
The valve 273 on the discharge pipe 272 and the discharge valve 271 of the sand collecting hopper 27 are both electric and are connected with a PLC controller, and the driving motors of the roller 21, the feeding belt conveyor 11 and the multistage belt conveyor 31 are all connected with the PLC controller.
The drum 21 is composed of three sections of screens 24 with different apertures, the sand collecting hoppers 27 corresponding to the second section of screen 241 and the third section of screen 242 are communicated with the circulating screening mechanism 3, coarse sand flowing out of the sand collecting hoppers 27 is conveyed to the feeding mechanism 1 through the circulating screening mechanism 3, so that sand is screened again, the upper half parts of the sand collecting hoppers 27 corresponding to the three sections of screens are communicated with each other, and the last sand collecting hopper 27 is communicated with the air suction port of the negative pressure fan 274 through an opening on the side wall.
In the utility model, the discharge hole of the feeding mechanism 1 is communicated with the feed hole of the roller 21, sand to be screened enters the roller 21 from the discharge hole of the feeding mechanism 1, the wall of the roller 21 is formed by seamlessly connecting a plurality of sections of screen meshes 24 with different apertures, the screen meshes 24 with different apertures can screen out corresponding sand with multiple particle sizes, the plurality of sections of screen meshes of the roller 21 are sequentially arranged according to the aperture from thin to thick, the roller 21 is obliquely and rotatably arranged on the frame 22 from one end with a fine aperture to one end with a thick aperture, the downward inclination angle is 10-15 degrees, the roller 21 rolls to ensure that the sand is subjected to multistage screening according to the aperture from thin to thick through the plurality of sections of screen meshes 24 under the action of gravity, corresponding sand collecting hoppers 27 are respectively arranged below the plurality of sections of screen meshes, the sand collecting hoppers 27 are respectively provided with a discharging valve 271, thereby facilitating discharging or further screening according to requirements, the sand collecting hopper 27 corresponding to the multi-section screen is communicated with the circulating screening mechanism 3 through the discharge pipe 272 except the part below the finest screen in the aperture, a valve 273 is arranged on the discharge pipe 272, when coarse sand needs to be further screened, the discharge valve 271 is closed, the valve 273 on the corresponding discharge pipe 272 is opened, the coarse sand is conveyed to the feeding mechanism 1 through the circulating screening mechanism 3 to be screened again, sand with different particle sizes can be directly obtained through the multi-section screen 24 with different apertures, meanwhile, the coarse sand can be circularly screened as required, the loss of fine sand is reduced, the sand screening efficiency and quality are improved, the automation degree is high, and time and labor are saved.
Embodiment 2, referring to fig. 3 and 4, as a further optimized design of embodiment 1, an annular sand-blocking plate 28 is disposed between two adjacent segments of the screens 24, a longitudinal section of the annular sand-blocking plate 28 is a triangle with two acute bottom angles, a height of the triangle is not more than 2cm, fine sand is prevented from entering the coarser sand screens, lengths of the three segments of screens 24 with different apertures are different, a length of the first segment of fine sand screen 243 is 4/7 of a length of the drum, a length of the second segment of screen 241 is 2/7 of the length of the drum, a length of the third segment of screen 242 is 1/7 of the length of the drum, and a longitudinal section of the annular sand-blocking plate 28 is an isosceles triangle with a right angle vertex angle.

Claims (10)

1. A multi-particle-size automatic sand screening device is characterized by comprising a feeding mechanism, a multi-segment screening mechanism for screening sand with multiple particle sizes, a circulating screening mechanism for screening sand with coarse particle sizes, a garbage and stone storage mechanism, wherein the multi-segment screening mechanism comprises a roller, a rack for supporting the roller and a roller driving mechanism, the wall of the roller is formed by sequentially and seamlessly connecting a plurality of segments of screen meshes with different apertures, the plurality of segments of screen meshes of the roller are sequentially arranged from fine to coarse according to the aperture, the roller is obliquely and rotatably arranged on the rack from one end with fine aperture to one end with coarse aperture, the roller is connected and driven by the roller driving mechanism, a discharge port of the feeding mechanism is communicated with a feed port of the roller, corresponding sand collecting hoppers are respectively arranged below the plurality of segments of screen meshes, discharging valves are respectively arranged on the sand collecting hoppers, the sand collecting hoppers corresponding to the plurality of screen meshes are communicated with the circulating screening mechanism through discharging pipes except for being positioned below the finest aperture screen meshes, the discharge port of the circulating screening mechanism is connected to the feeding mechanism, a valve is arranged on the discharge pipe, and the discharge port of the roller is communicated with the garbage and stone storage mechanism.
2. The automatic sand screening device of claim 1, wherein the roller driving mechanism comprises a motor, a speed reducer, a roller structure and a gear transmission structure, the roller structure is arranged on the frame at two ends of the roller, the gear transmission structure is arranged in the middle of the roller, and the gear transmission structure is driven by the motor through the speed reducer.
3. The automatic sand sieving device of claim 1, wherein the feeding mechanism comprises a feeding belt conveyor, a feeding hopper and a discharging pipe connected to the outlet of the feeding hopper, the outlet of the feeding belt conveyor is communicated with the feeding inlet of the feeding hopper, and the outlet of the feeding hopper is provided with an electric valve or a valve.
4. The automatic multi-particle-size sand screening device according to claim 3, wherein the circulating screening mechanism is a multi-stage belt conveyor, and the discharge end of the multi-stage belt conveyor is communicated with the feeding belt conveyor.
5. The multi-particle-size automatic sand screening device as claimed in claim 4, wherein the valve on the discharge pipe and the discharge valve of the sand collecting hopper are electrically operated and are connected with a PLC controller.
6. The multi-particle-size automatic sand screening device as claimed in claim 5, wherein the driving motors of the drum, the feeding belt conveyor and the multi-stage belt conveyor are all connected with the PLC controller.
7. The multi-particle-size automatic sand screening device as claimed in claim 1, wherein an annular sand blocking plate is arranged between two adjacent sections of the screen mesh, the longitudinal section of the annular sand blocking plate is a triangle with two base angles being acute angles, and the height of the triangle is not more than 2 cm.
8. The multi-particle-size automatic sand screening device as claimed in claim 7, wherein the drum is composed of three sections of screens with different apertures, and sand collecting hoppers corresponding to the second section of screen and the third section of screen are communicated with the circulating screening mechanism.
9. The multi-particle size automatic sand screening device of claim 8, wherein the three different mesh screens have different lengths, the first fine sand screen having a length of 4/7, the second screen having a length of 2/7 and the third screen having a length of 1/7.
10. The multi-particle-size automatic sand screening device as claimed in claim 9, wherein the upper half parts of the sand collecting hoppers corresponding to the three sections of screens are communicated with each other, and the last sand collecting hopper is communicated with the suction port of the negative pressure fan through the opening on the side wall.
CN202122540765.2U 2021-10-21 2021-10-21 Automatic sand sieving device with multiple particle sizes Active CN216323140U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122540765.2U CN216323140U (en) 2021-10-21 2021-10-21 Automatic sand sieving device with multiple particle sizes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122540765.2U CN216323140U (en) 2021-10-21 2021-10-21 Automatic sand sieving device with multiple particle sizes

Publications (1)

Publication Number Publication Date
CN216323140U true CN216323140U (en) 2022-04-19

Family

ID=81179011

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122540765.2U Active CN216323140U (en) 2021-10-21 2021-10-21 Automatic sand sieving device with multiple particle sizes

Country Status (1)

Country Link
CN (1) CN216323140U (en)

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