CN107983626B

CN107983626B - Sand screening method

Info

Publication number: CN107983626B
Application number: CN201711276692.2A
Authority: CN
Inventors: 龙江汇
Original assignee: Liuyang Sanggong Environmental Protection Technology Co ltd
Current assignee: LIUYANG SANGGONG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.
Priority date: 2016-08-01
Filing date: 2016-08-01
Publication date: 2020-10-16
Anticipated expiration: 2036-08-01
Also published as: CN107983626A; CN106040581B; CN106040581A

Abstract

An efficient sand vibrating screening method comprises a bottom plate, a frame device, a support device, a motor device, a filtering device, a pushing device and a supporting device, wherein a first supporting rod, a first inclined rod, a first bending rod, a recycling box and a second supporting rod are arranged on the bottom plate, the frame device comprises a first frame body, a first limiting block, a first inclined plate, a first support and a second bending rod, the support device comprises a second support, a first roller, a first cross rod, a third support, a second inclined rod, a second roller, a second cross rod, a fourth support, a third inclined rod and a first vertical rod, the motor device comprises a motor, an output shaft, a third cross rod, a first pull wire, a second pull wire, a first filter screen, a first top leaning rod and a first spring, the filtering device comprises a first bending plate, a second filter screen, a first supporting block, a second spring, a third filter screen and a vibrator, the pushing device comprises an air cylinder, a first inclined rod, a first bending, The push rod and the fifth bracket can enable the filter screen to vibrate continuously, and the screening efficiency is improved.

Description

Sand screening method

The present application is a divisional application with the invention number 2016106256434 entitled high-efficiency vibrating sand screening device.

Technical Field

The invention relates to the technical field of construction machinery, in particular to a high-efficiency vibrating sand screening device.

Background

At present building site, middle-size and small-size building prefabricated component factory etc for carry out various screening sand machines that separate coarse sand and fine sand, generally take the clearance operation, this is because screening sand machine can only be with fine sand by the online undersize, and the coarse sand often can block up the filter screen, and then influences the screening effect of filter screen, makes the screening sand operation unable to go on even when serious.

Therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

The object of the present invention is to provide an efficient vibrating sand screening device that effectively solves the above mentioned technical problems.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides an efficient shale shaker sand screening device, efficient shale shaker sand screening device includes the bottom plate, is located the frame device of bottom plate top, is located the support device on frame device right side, is located the motor means of support device top, is located filter equipment of frame device below, be located push device of the filter equipment left and right sides, be located the strutting arrangement of push device below, be equipped with the first bracing piece that is located its top left and right sides on the bottom plate, be located the first down tube of the first bracing piece left and right sides, set up in first crooked pole between the first bracing piece, be located collection box between the first crooked pole and be located the second bracing piece of collection box below, the frame device includes first frame, accept in first frame first limiting block, be located first swash plate of first frame top, Be located first support of first swash plate below, be located the crooked pole of second of first support below, the support device include the second support, set up in first gyro wheel on the second support, be located the left first horizontal pole of second support, be located the left third support of first horizontal pole, set up in second down tube, second gyro wheel on the third support, be located the second horizontal pole on second support right side, be located the fourth support of second horizontal pole below, be located the third down tube of fourth support top and be located the first montant of fourth support below, the motor device include the motor, set up in output shaft on the motor, be located the left third horizontal pole of motor, set up in first acting as go-between on the output shaft, set up in the second acting as go-between on the first acting as go-between, be located the first filter screen of second acting as go-between below, Be located first top of first filter screen below leans on the pole and is located first top leans on the first spring of pole left and right sides, filter equipment include first crooked board, set up in second filter screen on the first crooked board, be located the first supporting block of first crooked board top left and right sides, be located the second spring of first crooked board below, be located the third filter screen of second spring below and set up in the vibrator of third filter screen upper end, thrust unit includes the cylinder, set up in catch bar on the cylinder, be located the fifth support of cylinder top, set up in the fourth down tube on the fifth support, strutting arrangement includes the second framework, is located the sixth support of second framework left and right sides, set up in the fourth horizontal pole on the sixth support, set up in the second montant on the fourth horizontal pole, And the fifth diagonal rod is positioned below the sixth bracket.

Two first supporting rods are arranged, the first supporting rods are cuboid, the first supporting rods are vertically arranged, the lower end of the first supporting rod is fixedly connected with the bottom plate, two first inclined rods are arranged, the lower end of the first diagonal rod is fixedly connected with the bottom plate, the upper end of the first diagonal rod is fixedly connected with the first supporting rod, the number of the first bending rods is two, the first bending rods are bent, two ends of each first bending rod are fixedly connected with the side surface of each first supporting rod, the recycling box is in a hollow semi-cylindrical shape, the first bending rod is abutted against the recycling box, the two second support rods are respectively positioned at the left side and the right side of the recovery box and are bent, the lower end of the second supporting rod is fixedly connected with the bottom plate, and the second supporting rod abuts against the recycling box.

The first frame body is a hollow cuboid, the first frame body is vertically arranged, the first limiting blocks are provided with two limiting blocks which are respectively positioned at the left side and the right side in the first frame body, the first limiting block is a cylinder with a right-angled triangle cross section and is horizontally arranged, the side surface of the first limiting block is fixedly connected with the inner surface of the first frame body, the lower surface of the first limiting block is horizontal, the upper surface of the first limiting block is inclined, the first inclined plate is inclined, the lower end of the first inclined plate is fixedly connected with the upper surface of the first frame body, the first bracket is L-shaped, one end of the first bracket is fixedly connected with the first inclined plate, the other end of the first support is fixedly connected with the side face of the first frame body, the second bending rod is bent, and the upper end of the second bending rod is fixedly connected with the lower surface of the first support.

The second support is L-shaped, one end of the second support is fixedly connected with the right surface of the first frame body, the other end of the second support is vertical and is provided with a first groove, the first roller is cylindrical, the first roller is accommodated in the first groove and is in rotating connection with the second support shaft, the first cross rod is cuboid, the first cross rod is horizontally arranged, the right end of the first cross rod is fixedly connected with the second support, the left end of the first cross rod is fixedly connected with the third support, the third support is L-shaped, one end of the third support is fixedly connected with the upper surface of the first frame body, the other end of the third support is horizontal and is provided with a second groove, the second diagonal is inclined, the end part of the second diagonal is fixedly connected with the third support, and the second roller is cylindrical, the second gyro wheel level is placed, the second gyro wheel accept in the second recess and with the third support axle is changeed and is connected, the second horizontal pole is the cuboid, the second horizontal pole level is placed, the left end of second horizontal pole with the right fixed surface of second support is connected, the fourth support is the L type, the one end of fourth support with the lower fixed surface of second horizontal pole is connected, the other end of fourth support with the side fixed connection of first framework, the third down tube is the slope form, the lower extreme of third down tube with fourth support fixed connection, the upper end of third down tube with the lower fixed surface of second support is connected, first montant is the cuboid, first montant is vertical to be placed, the upper end of first montant with the lower fixed surface of fourth support is connected.

The lower surface of the motor is fixedly connected with the upper surface of the second cross rod, the output shaft is a cylinder, the output shaft is connected with the motor, the third cross rod is a cuboid, the third cross rod is horizontally arranged, the right end of the third cross rod is connected with the motor, the left end of the third cross rod is fixedly connected with the right surface of the second support, one end of the first pull wire is fixedly connected with the output shaft, the other end of the first pull wire is fixedly connected with the second pull wire, two second pull wires are arranged, the lower end of the second pull wire is fixedly connected with the first filter screen, the first filter screen is in a bent shape, the side surface of the first filter screen is slidably connected with the inner surface of the first frame body, the first top rest rod is in a vertical shape, and the upper end of the first top rest rod is fixedly connected with the first filter screen, the first spring is equipped with two, first spring is vertical form, the upper end of first spring with first filter screen fixed connection.

The transverse section of the first supporting block is in a right trapezoid shape, the lower surface of the first frame body is fixedly connected with the upper surface of the first supporting block, the lower end of the first spring is fixedly connected with the side surface of the first supporting block, the first bending plate is in a bending shape, the two ends of the first bending plate are abutted against the lower surface of the first supporting block and are fixedly connected with the first supporting block, the first bending plate is provided with a first through hole penetrating through the upper surface and the lower surface of the first bending plate, the second filtering net is in a bending shape, the second filtering net is contained in the first through hole and is fixedly connected with the first bending plate, the second spring is in a vertical shape, the upper end of the second spring is fixedly connected with the first bending plate, the lower end of the second spring is fixedly connected with the third filtering net, the third filtering net is in a cuboid shape, and the third filtering net is horizontally placed, the vibrator is fixedly connected with the third filter screen.

The catch bar is the cuboid, the catch bar level is placed, the one end of catch bar with the cylinder is connected, the upper surface of catch bar with the lower surface sliding connection of first supporting block, the other end top of catch bar leans on the first crooked board, the fifth support is the L type, the one end of fifth support with the side fixed connection of first framework, the other end of fifth support with the last fixed surface of cylinder is connected, the fourth down tube is the slope form, the upper end of fourth down tube with fifth support fixed connection, the lower extreme of fourth down tube with the side fixed connection of first supporting block.

The second framework is hollow cuboid, the second framework is placed vertically, the third filter screen accept in the second framework, first framework is located the collection box top, the sixth support be equipped with two and be located respectively the left and right sides of second framework, the sixth support is the L type, the one end of sixth support with the side fixed connection of second framework, the other end of sixth support with the lower fixed surface of cylinder is connected, the upper end of first bracing piece with sixth support fixed connection.

The fourth horizontal pole is equipped with two, the fourth horizontal pole is the cuboid, the one end of fourth horizontal pole with sixth support fixed connection, the other end of fourth horizontal pole with the side fixed connection of second montant, the second montant is the cuboid, the vertical placing of second montant, the lower extreme of second montant with sixth support fixed connection, the upper end of second montant with the lower surface sliding connection of catch bar, the fifth down tube be equipped with two and be located respectively the left and right sides of second framework, the fifth down tube is the slope form, the upper end of fifth down tube with sixth support fixed connection, the lower extreme of fifth down tube with the side fixed connection of second framework.

After the technical scheme is adopted, the invention has the following advantages:

the efficient vibration sand screening device is simple in structure and convenient to use, fine sand can be screened out quickly, and meanwhile the filter screen can vibrate continuously, so that some thicker sand can be screened out, the screening efficiency is improved, the filter screen can be prevented from being blocked by the coarse sand, the sand screening operation can be smoothly carried out on the filter screen, and the service life of the filter screen is prolonged seriously.

Drawings

The following describes the embodiments of the present invention with reference to the drawings, wherein:

FIG. 1 is a schematic structural view of a high efficiency vibrating sand screen apparatus of the present invention;

Detailed Description

As shown in fig. 1, the high-efficiency sand shaker of the present invention includes a bottom plate 1, a frame device 2 located above the bottom plate 1, a bracket device 3 located at the right side of the frame device 2, a motor device 4 located above the bracket device 3, a filter device 5 located below the frame device 2, pushing devices 6 located at the left and right sides of the filter device 5, and a support device 7 located below the pushing devices 6.

As shown in fig. 1, the bottom plate 1 is a rectangular parallelepiped, the bottom plate 1 is horizontally disposed, and the bottom plate 1 is provided with first support rods 11 located on the left and right sides above the bottom plate, first inclined rods 12 located on the left and right sides of the first support rods 11, first bending rods 13 arranged between the first support rods 11, a recycling bin 14 located between the first bending rods 13, and a second support rod 15 located below the recycling bin 14. The number of the first supporting rods 11 is two, the first supporting rods 11 are cuboid, the first supporting rods 11 are vertically placed, and the lower ends of the first supporting rods 11 are fixedly connected with the bottom plate 1. The number of the first inclined rods 12 is two, the lower ends of the first inclined rods 12 are fixedly connected with the bottom plate 1, and the upper ends of the first inclined rods 12 are fixedly connected with the first supporting rods 11. First crooked pole 13 is equipped with two, first crooked pole 13 is crooked form, the both ends of first crooked pole 13 with the side fixed connection of first bracing piece 11. The recycling bin 14 is in a hollow semi-cylinder shape, the first bending rod 13 is abutted against the recycling bin 14 so as to fix the recycling bin 14, and the recycling bin 14 is placed on the bottom plate 1. Second bracing piece 15 is equipped with two and is located respectively the left and right sides of collection box 14, second bracing piece 15 is curved, the lower extreme of second bracing piece 15 with bottom plate 1 fixed connection, second bracing piece 15 top is leaned on collection box 14 to can fix collection box 14.

As shown in fig. 1, the frame device 2 includes a first frame 21, a first limiting block 22 accommodated in the first frame 21, a first inclined plate 23 located above the first frame 21, a first bracket 24 located below the first inclined plate 23, and a second curved bar 25 located below the first bracket 24. The first frame body 21 is a hollow cuboid, the first frame body 21 is vertically placed, and the upper surface and the lower surface of the first frame body 21 are communicated. The first limiting blocks 22 are two and are respectively located at the left side and the right side in the first frame body 21, the first limiting blocks 22 are cylinders with right-angled triangle cross sections, the first limiting blocks 22 are horizontally arranged, the side surfaces of the first limiting blocks 22 are fixedly connected with the inner surface of the first frame body 21, the lower surface of the first limiting blocks 22 is horizontal, and the upper surface of the first limiting blocks 22 is inclined. The first inclined plate 23 is inclined, and the lower end of the first inclined plate 23 is fixedly connected with the upper surface of the first frame body 21, so that sand can be conveniently placed in the first frame body 21. The first bracket 24 is L-shaped, one end of the first bracket 24 is fixedly connected to the first inclined plate 23, and the other end of the first bracket 24 is fixedly connected to the side surface of the first frame 21. The second bending rod 25 is bent, and the upper end of the second bending rod 25 is fixedly connected with the lower surface of the first bracket 24.

As shown in fig. 1, the support device 3 includes a second support 31, a first roller 32 disposed on the second support 31, a first cross bar 33 located on the left side of the second support 31, a third support 34 located on the left side of the first cross bar 33, a second diagonal bar 35 disposed on the third support 34, a second roller 36, a second cross bar 37 located on the right side of the second support 31, a fourth support 38 located below the second cross bar 37, a third diagonal bar 39 located above the fourth support 38, and a first vertical bar 30 located below the fourth support 38. The second support 31 is L-shaped, one end of the second support 31 is fixedly connected to the right surface of the first frame 21, the other end of the second support 31 is vertical and is provided with a first groove 311, and the first groove 311 is rectangular. The first roller 32 is a cylinder, and the first roller 32 is accommodated in the first groove 311 and is pivotally connected to the second bracket 31. First horizontal pole 33 is the cuboid, first horizontal pole 33 level is placed, the right-hand member of first horizontal pole 33 with second support 31 fixed connection, the left end of first horizontal pole 33 with third support 34 fixed connection. The third bracket 34 is L-shaped, one end of the third bracket 34 is fixedly connected to the upper surface of the first frame 21, the other end of the third bracket 34 is horizontal and is provided with a second groove 341, and the second groove 341 is rectangular. The second diagonal rod 35 is inclined, and an end of the second diagonal rod 35 is fixedly connected with the third bracket 34. The second roller 36 is a cylinder, the second roller 36 is horizontally disposed, and the second roller 36 is accommodated in the second groove 341 and pivotally connected to the third bracket 34, so that the second roller 36 can rotate in the second groove 341. Second horizontal pole 37 is the cuboid, second horizontal pole 37 level is placed, the left end of second horizontal pole 37 with the right surface fixed connection of second support 31. The fourth support 38 is L-shaped, one end of the fourth support 38 is fixedly connected to the lower surface of the second cross bar 37, and the other end of the fourth support 38 is fixedly connected to the side surface of the first frame 21. The third inclined rod 39 is inclined, the lower end of the third inclined rod 39 is fixedly connected with the fourth bracket 38, and the upper end of the third inclined rod 39 is fixedly connected with the lower surface of the second bracket 31. The first vertical rod 30 is a cuboid, the first vertical rod 30 is vertically placed, and the upper end of the first vertical rod 30 is fixedly connected with the lower surface of the fourth support 38.

As shown in fig. 1, the motor device 4 includes a motor 41, an output shaft 42 disposed on the motor 41, a third cross bar 43 located on the left side of the motor 41, a first pull wire 44 disposed on the output shaft 42, a second pull wire 45 disposed on the first pull wire 44, a first filter 46 located below the second pull wire 45, a first abutting rod 47 located below the first filter 46, and first springs 48 located on the left and right sides of the first abutting rod 47. The lower surface of the motor 41 is fixedly connected with the upper surface of the second cross bar 37, and the motor 41 is electrically connected with a power supply. The output shaft 42 is a cylinder, and the output shaft 42 is connected with the motor 41, so that the motor 41 drives the output shaft 42 to rotate. Third horizontal pole 43 is the cuboid, third horizontal pole 43 level is placed, the right-hand member of third horizontal pole 43 with motor 41 is connected, the left end of third horizontal pole 43 with the right surface fixed connection of second support 31. One end of the first pulling wire 44 is fixedly connected with the output shaft 42, and the other end of the first pulling wire 44 is fixedly connected with the second pulling wire 45. The number of the second pull wires 45 is two, and the lower end of the second pull wire 45 is fixedly connected with the first filter screen 46. The first filter 46 is curved, and a side surface of the first filter 46 is slidably connected to an inner surface of the first frame 21, so that the first filter 46 can move up and down in the first frame 21. The first abutting rod 47 is vertical, and the upper end of the first abutting rod 47 is fixedly connected with the first filter screen 46. The number of the first springs 48 is two, the first springs 48 are vertical, and the upper ends of the first springs 48 are fixedly connected with the first filter screen 46.

As shown in fig. 1, the filtering apparatus 5 includes a first bending plate 51, a second filter 52 disposed on the first bending plate 51, first supporting blocks 53 disposed on left and right sides above the first bending plate 51, a second spring 54 disposed below the first bending plate 51, a third filter 55 disposed below the second spring 54, and a vibrator 56 disposed at an upper end of the third filter 55. First supporting block 53 is equipped with two and is located respectively the left and right sides of first framework 21 below, first supporting block 53's transversal right trapezoid of personally submitting, first framework 21's lower surface with the upper surface fixed connection of first supporting block 53, first spring 48's lower extreme with the side fixed connection of first supporting block 53, thereby it is right first filter screen 46 plays the supporting role. First crooked board 51 is crooked form, the both ends top of first crooked board 51 is leaned on the lower surface of first supporting block 53 and rather than fixed connection, first crooked board 51 adopts elastic material to make, be equipped with the first through-hole 511 that runs through its upper and lower surface on the first crooked board 51. The second filter 52 is curved, and the second filter 52 is accommodated in the first through hole 511 and is fixedly connected to the first curved plate 51. The second springs 54 are arranged at the left side and the right side of the lower portion of the first bending plate 51, the second springs 54 are vertical, the upper ends of the second springs 54 are fixedly connected with the first bending plate 51, and the lower ends of the second springs 54 are fixedly connected with the third filter screen 55. The third filter 55 is a cuboid, and the third filter 55 is horizontally arranged. The vibrator 56 is fixedly connected with the third filter screen 55, and the vibrator 56 is electrically connected with a power supply, so that the vibrator 56 can drive the third filter screen 55 to vibrate.

As shown in fig. 1, the pushing devices 6 are two and are respectively located at the left and right sides of the filtering device 5. The pushing device 6 comprises an air cylinder 61, a pushing rod 62 arranged on the air cylinder 61, a fifth bracket 63 positioned above the air cylinder 61, and a fourth inclined rod 64 arranged on the fifth bracket 63. The catch bar 62 is the cuboid, catch bar 62 level is placed, catch bar 62 one end with the cylinder 61 is connected, makes the cylinder 61 drives catch bar 62 removes, catch bar 62 the upper surface with the lower surface sliding connection of first supporting block 53, catch bar 62's other end top is leaned on first bent plate 51, and then when catch bar 62 removes, can push against on first bent plate 51 for first bent plate 51 vibrates. The fifth support 63 is L-shaped, one end of the fifth support 63 is fixedly connected to the side surface of the first frame 21, and the other end of the fifth support 63 is fixedly connected to the upper surface of the cylinder 61. The fourth diagonal rod 64 is inclined, the upper end of the fourth diagonal rod 64 is fixedly connected with the fifth support 63, and the lower end of the fourth diagonal rod 64 is fixedly connected with the side surface of the first support block 53.

As shown in fig. 1, the supporting device 7 includes a second frame 71, sixth brackets 72 located at left and right sides of the second frame 71, a fourth cross bar 73 disposed on the sixth brackets 72, a second vertical bar 74 disposed on the fourth cross bar 73, and a fifth diagonal bar 75 located below the sixth brackets 72. The second frame body 71 is a hollow cuboid, the second frame body 71 is vertically placed, the upper surface and the lower surface of the second frame body 71 are communicated, the third filter screen 55 is contained in the second frame body 71, and the first frame body 71 is located above the recovery box 14. The sixth support 72 is provided with two brackets, the two brackets are respectively located on the left side and the right side of the second frame body 71, the sixth support 72 is L-shaped, one end of the sixth support 72 is fixedly connected with the side surface of the second frame body 71, the other end of the sixth support 72 is fixedly connected with the lower surface of the cylinder 61, and the upper end of the first support rod 11 is fixedly connected with the sixth support 72. The number of the fourth cross bars 73 is two, the fourth cross bars 73 are cuboids, one end of each fourth cross bar 73 is fixedly connected with the sixth support 72, and the other end of each fourth cross bar 73 is fixedly connected with the side face of the second vertical bar 74. The second vertical rod 74 is a rectangular parallelepiped, the second vertical rod 74 is vertically disposed, the lower end of the second vertical rod 74 is fixedly connected to the sixth support 72, and the upper end of the second vertical rod 74 is connected to the lower surface of the push rod 62 in a sliding manner, so that the push rod 62 can move left and right stably. The fifth diagonal rods 75 are two and are respectively located on the left side and the right side of the second frame body 71, the fifth diagonal rods 75 are inclined, the upper ends of the fifth diagonal rods 75 are fixedly connected with the sixth support 72, and the lower ends of the fifth diagonal rods 75 are fixedly connected with the side face of the second frame body 71.

As shown in fig. 1, when the high-efficiency sand vibrating screen according to the present invention is used, sand to be screened is first put into the first frame 21 and then collected on the first filter 46. The motor 41 is then activated so that the output shaft 42 rotates clockwise so that the first pull wire 44 is pulled tight and then passes through the second pull wire 45 so that the first filter 46 moves upward. When the first filter screen 46 moves to a certain height, the motor 41 is turned off, then the first filter screen 46 moves downwards until the first abutting rod 47 abuts against the second filter screen 52, and further the first filter screen 46 and the second filter screen 52 vibrate, so that the filtering efficiency of the first filter screen 46 is higher, sand on the first filter screen 46 can enter the first bending plate 51 after being filtered by the first filter screen 46 as soon as possible, then the motor 41 is started, the steps are repeated, so that the first filter screen 46 and the second filter screen 52 can continuously vibrate, the filtering efficiency of the second filter screen 52 is improved, and sand on the second filter screen 52 enters the third filter screen 55 after being filtered by the second filter screen 52 as soon as possible and is concentrated in the second frame body 71. And meanwhile, the air cylinder 61 is started, so that the push rod 62 continuously moves left and right and strikes on the first bending plate 51, the first bending plate 51 and the second filter screen 52 vibrate, and the filtering efficiency of the second filter screen 52 is higher. Then, the vibrator 56 is activated to make the third filter 55 vibrate continuously, so that the filtering efficiency of the third filter 55 can be improved, and the sand portion on the third filter 55 enters the recycling bin 14 after being filtered by the third filter 55, and the other sand portion enters the recycling bin 14 after passing through the periphery of the third filter 55. So far, the use process of the high-efficiency vibration sand screening device is described.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method of screening sand comprising the steps of: firstly, sand to be screened is put into a first frame body (21), then the sand is concentrated on a first filter screen (46), then a motor (41) is started, an output shaft (42) rotates clockwise, a first pull wire (44) is tensioned, then the first filter screen (46) moves upwards through a second pull wire (45), when the first filter screen (46) moves to a certain height, the motor (41) is closed, then the first filter screen (46) moves downwards until a first leaning rod (47) leans against a second filter screen (52), then the first filter screen (46) and the second filter screen (52) vibrate, so that the filtering efficiency of the first filter screen (46) is higher, the sand on the first filter screen (46) can enter a first bending plate (51) after being filtered by the first filter screen (46) as soon as possible, then the motor (41) is started, repeating the steps to enable the first filter screen (46) and the second filter screen (52) to continuously vibrate, so that the filtering efficiency of the second filter screen (52) is improved, sand on the second filter screen (52) enters the third filter screen (55) and is concentrated in the second frame body (71) after being filtered by the second filter screen (52), the air cylinder (61) is started simultaneously to enable the push rod (62) to continuously move left and right and to knock on the first bending plate (51), the first bending plate (51) and the second filter screen (52) vibrate to enable the filtering efficiency of the second filter screen (52) to be higher, then the vibrator (56) is started to enable the third filter screen (55) to continuously vibrate, further the filtering efficiency of the third filter screen (55) can be improved, and the sand part on the third filter screen (55) enters the recycling box (14) after being filtered by the third filter screen (55), the other part enters the recycling box (14) through the periphery of the third filter screen (55);

the vibrating sand screening device used by the sand screening method comprises a bottom plate (1), a frame device (2) arranged above the bottom plate (1), a support device (3) arranged on the right side of the frame device (2), a motor device (4) arranged above the support device (3), a filtering device (5) arranged below the frame device (2), pushing devices (6) arranged on the left side and the right side of the filtering device (5) and a supporting device (7) arranged below the pushing devices (6), wherein the filtering device (5) comprises a first bending plate (51), a second filtering net (52) arranged on the first bending plate (51), first supporting blocks (53) arranged on the left side and the right side above the first bending plate (51), a second spring (54) arranged below the first bending plate (51), a third filtering net (55) arranged below the second spring (54) and a third filtering net (55) Vibrator (56), first supporting block (53) be equipped with two and be located respectively the left and right sides of first framework (21) below, the transversal right trapezoid of personally submitting of first supporting block (53), the lower surface of first framework (21) with the last fixed surface of first supporting block (53) is connected, the lower extreme of first spring (48) with the side fixed connection of first supporting block (53), thereby it is right first filter screen (46) play the supporting role, first crooked board (51) are curved, the both ends top of first crooked board (51) lean on the lower surface of first supporting block (53) and rather than fixed connection, first crooked board (51) adopt elastic material to make, be equipped with first through-hole (511) that run through its upper and lower surface on first crooked board (51), second filter screen (52) are curved, second filter screen (52) accept in first through-hole (511) and with first crooked board (51) fixed connection, second spring (54) are equipped with two and are located respectively the left and right sides of first crooked board (51) below, second spring (54) are vertical form, the upper end of second spring (54) with first crooked board (51) fixed connection, the lower extreme of second spring (54) with third filter screen (55) fixed connection, third filter screen (55) are the cuboid, third filter screen (55) level is placed, vibrator (56) with third filter screen (55) fixed connection, vibrator (56) and power electric connection make vibrator (56) can drive third filter screen (55) vibration.