Rapid sand screening device

Abstract

The utility model discloses a rapid sand screening device which comprises a fixed frame and sliding wheels installed below the fixed frame, a lifting adjusting type sand discharging device is installed in the fixed frame, and a shaking type screening frame device is installed in the fixed frame. A plurality of layers of rolling cleaning type screen mesh devices are mounted in the shaking type screening frame device; according to the sand screening device, the four layers of filter screens which are sequentially sleeved and are gradually increased in mesh number are arranged, and the filter screens are rotated, so that the sand screening positions of the filter screens can move along with the rotation of the filter screens, the sand screening speed of the filter screens is effectively guaranteed, the sand screening time is saved, and the sand screening efficiency is improved. And the cleaning roller arranged on the filter screen is used for cleaning the filter screen after sand screening, so that the cleanliness of the filter screen is guaranteed, and the filter screen can work efficiently.

Description

Technical Field

[0001] The utility model relates to the field of sand screening related equipment, in particular to a sand rapid screening device. Background Art

[0002] The sand screening machine imitates the working principle of manually screening sand with an inclined screen. It adopts a flat rolling screen drum and ensures that the material flow can be continuously screened for more than five circles between the multiple spiral blades in the screen drum, so that the sand material can roll and slide repeatedly to be fully dispersed and separated. It is different from the inclined rolling screen, which causes the large and small materials to push and bury each other, and the screening process is hurried; it is also different from the inclined vibrating screen, which causes the large and small materials to vibrate and mix.

[0003] At present, there are various sand screening machines on the market, but due to the moisture problem of sand, it is easy for sand to stick to the screen, causing the screen holes of the screen to be blocked, thus affecting the sand screening effect of the screen. At the same time, due to the different uses of sand, it is necessary to select the corresponding screen for screening according to the use of sand, which leads to inconvenience in actual use. Utility Model Content

[0004] The utility model aims to solve the above problems and designs a sand rapid screening device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sand rapid screening device comprises a fixed frame and a sliding wheel installed under the fixed frame, a lifting and adjusting sand discharging device is installed in the fixed frame, a shaking screening frame device is installed inside the fixed frame, and a multi-layer rolling and sweeping screen device is installed inside the shaking screening frame device;

[0007] The shaking type screening frame device includes a shaking frame provided on the upper part of the fixed frame, supporting pulleys are installed on both sides of the shaking frame, sliding baffles are provided on both sides of the supporting pulley, the sliding baffles are fixedly connected to the fixed frame, the supporting pulley is in sliding contact with the fixed frame, a hydraulic telescopic cylinder is installed at the four corners of one side of the shaking frame, the telescopic end of the hydraulic telescopic cylinder is fixedly connected to the fixed frame, a hydraulic oil branch pipe is installed on the hydraulic telescopic cylinder, and a shaking spring is installed at the four corners of the other side of the shaking frame, and the shaking spring is fixedly connected to the fixed frame, a driving platform is installed at the rear end of the shaking frame, a driving motor is installed on one side above the driving platform, and a reducer is installed on the other side above the driving platform, the rotating end of the driving motor is fixedly connected to the input end of the reducer, and a double-groove pulley is installed at the output end of the reducer, and a shaking driving device is provided below the driving platform;

[0008] The multi-layer rolling cleaning screen device includes four roller groups, the four roller groups are located in a shaking frame, each roller group is composed of four rollers, the four rollers form a rectangle, the other three roller groups are sequentially mounted inside the outermost roller group, the four roller groups are respectively mounted with filter screens, the mesh size of the filter screens increases with the mounting of the roller groups, the rollers are fixedly connected to the shaking frame through fixed seats and roller bearings, a waste discharge oblique baffle is installed on one side of each roller group, a cleaning roller is provided on one of the rollers in each roller group, cleaning shafts are installed at both ends of the cleaning roller, a cleaning bearing is installed at one end of the cleaning shaft, the cleaning bearing is fixedly connected to the fixed seat, a cleaning double-groove pulley is installed at one end of one of the cleaning shafts, the cleaning double-groove pulleys are connected by a cleaning transmission belt, and a filter screen rotation control device is provided in the shaking frame.

[0009] Furthermore, the shaking drive device includes an acceleration transmission mechanism installed above the lower surface of the shaking frame, the power input end of the acceleration transmission mechanism is connected to a double-groove pulley through a belt, a shaking platform is provided below the driving platform, the shaking platform is fixedly connected to the shaking frame, a shaking bearing seat is installed on one side above the shaking platform, a shaking bearing is installed on the shaking bearing seat, a shaking shaft is installed in the shaking bearing, a shaking pulley is installed at one end of the shaking shaft, the shaking pulley is connected to the power output end of the acceleration transmission mechanism through a belt, an eccentric wheel is installed at the other end of the shaking shaft, an eccentric pull rod is movably installed on the eccentric wheel, a small hydraulic cylinder is installed on the other side above the shaking platform, a movable piston inside the small hydraulic cylinder is movably connected to the eccentric pull rod, a hydraulic oil pipe is installed on the small hydraulic cylinder, and the hydraulic oil pipe is fixedly connected to the hydraulic oil branch pipe.

[0010] Furthermore, the filter screen rotation control device includes control fixing seats installed on both sides of the shaking frame, four groups of extrusion rollers are arranged between the two control fixing seats, the positions of the four groups of extrusion rollers correspond to the positions of the four filter screens, each group of extrusion rollers is two, the two extrusion rollers are located on both sides of the filter screen, wear-resistant rubber pads are installed on the extrusion rollers, both ends of the extrusion rollers are connected to the control fixing seats through extrusion shafts and extrusion bearings, a double-groove pulley 2 is installed on the extrusion shaft of one of the extrusion rollers in each group of extrusion rollers, the double-groove pulleys are connected by a transmission belt, one of the double-groove pulleys 2 is connected to the double-groove pulley 1 by a connecting belt, one of the extrusion rollers is in active contact with the filter screen, a certain gap is provided between the other extrusion roller and the filter screen, and an adjustment control device is provided on the control fixing seat.

[0011] Further, the adjustment and control device includes four control bases installed on the control fixing base. The four control bases respectively correspond to the gap positions between the extrusion roller and the filter screen. An electric telescopic rod is installed on the control base, and a control bearing is installed at the telescopic end of the electric telescopic rod. A control rotating shaft is installed inside the control bearing, and a rotating extrusion disc is installed on the control rotating shaft. Annular grooves are formed on the side surfaces of both sides of the rotating extrusion disc, and a number of compression springs are installed inside the annular grooves. The compression springs are evenly distributed in the annular grooves. An extrusion sealing seat is arranged inside the annular grooves. The extrusion sealing seat is slidably connected with the annular grooves, and one end of the extrusion sealing seat is fixedly connected with the compression spring.

[0012] Further, the lifting and adjusting sand discharging device includes two hydraulic cylinders installed at both ends on one side inside the fixed frame. The telescopic end of the hydraulic cylinder is installed with a U-shaped sliding seat. A micro servo motor is installed at one end of the lower surface of the U-shaped sliding seat. A rotating gear is installed at the rotating end of the micro servo motor. Small pulleys are installed on the inner side surfaces of the U-shaped sliding seat. A sliding frame is arranged between the two U-shaped sliding seats. The sliding frame is inserted into the U-shaped sliding seat, and the sliding frame is slidably connected with the small pulleys. Gear groove guides are installed on both sides of the lower surface of the sliding frame. The gear groove guides are engaged with the rotating gear. Conveyor rollers are arranged at both ends inside the sliding frame. A conveyor belt is sleeved between the two conveyor rollers. The conveyor rollers are connected with the sliding frame through conveyor rotating shafts and conveyor bearings. A conveyor driving motor is installed at one end of the sliding frame. The conveyor driving motor is connected with the conveyor rotating shaft through gears.

[0013] Further, the cleaning double-groove pulley is connected with one of the double-groove pulleys II through a cleaning connecting belt.

[0014] Further, the extrusion sealing seat is in sliding contact with one of the extrusion rollers in each group of extrusion rollers, and the extrusion sealing seat is in movable contact with the filter screen.

[0015] Further, the brush on the cleaning roller is in movable contact with the filter screen, and the rotating speed of the cleaning roller is higher than that of the roller.

[0016] A sand rapid screening device manufactured by using the technical scheme of the utility model has the following beneficial effects:

[0017] In the present device, four layers of filter screens with gradually increasing mesh sizes are arranged in sequence, and the filter screens are rotated, so that the sand screening position of the filter screen can be moved as the filter screen rotates, effectively ensuring the sand screening speed of the filter screen and saving sand screening time. The filter screen after sand screening is cleaned by a cleaning roller arranged on the filter screen, thereby ensuring the cleanliness of the filter screen and enabling the filter screen to work efficiently.

[0018] In the device, the filter screen is squeezed by the squeezing roller, the wear-resistant rubber pad and the rotating squeezing disk, so that the filter screen can move with the rotation of the squeezing roller, effectively avoiding the problem that the screen cannot rotate due to insufficient friction when the roller is directly driven to rotate.

[0019] In this device, a telescopic conveyor belt with adjustable height is provided, so that the screened sand can be quickly removed, which facilitates the sand screening work. At the same time, the device is easy to adjust, the structure is simple, and the cost is low.

[0020] In this device, since there are fewer electrical devices, the power consumption is low, which can effectively save the consumption of electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a sand rapid screening device described in the utility model;

[0022] Figure 2 It is a side cross-sectional view of a sand rapid screening device described in the utility model;

[0023] Figure 3 It is a partial schematic diagram of the cleaning roller of the utility model;

[0024] Figure 4 It is a schematic diagram of the acceleration transmission mechanism of the utility model;

[0025] Figure 5 It is a partial schematic diagram of the shaking drive device of the utility model;

[0026] Figure 6 It is a schematic diagram of the filter screen rotation control device of the utility model;

[0027] Figure 7 It is a schematic diagram of the rotating extrusion disk of the utility model;

[0028] Figure 8 It is a schematic diagram of the lifting and adjusting sand discharging device of the utility model;

[0029] Fig. 9 It is a partial top view of the sliding frame of the utility model;

[0030] In the figure, 1 is a fixed frame; 2 is a sliding wheel; 3 is a swaying frame; 4 is a supporting pulley; 5 is a sliding baffle; 6 is a hydraulic telescopic cylinder; 7 is a hydraulic oil branch pipe; 8 is a swaying spring; 9 is a driving platform; 10 is a driving motor; 11 is a speed reducer; 12 is a double-groove pulley I; 13 is a roller group; 14 is a roller; 15 is a filter screen; 16 is a fixed seat; 17 is a roller bearing; 18 is a waste discharge inclined baffle; 19 is a cleaning roller; 20 is a cleaning shaft; 21 is a cleaning bearing; 22 is a cleaning double-groove pulley; 23 is a cleaning transmission belt; 24 is an acceleration transmission mechanism; 25 is a belt I; 26 is a swaying platform; 27 is a swaying bearing seat; 28 is a swaying bearing; 29 is a swaying rotating shaft; 30 is a swaying pulley; 31 is a belt II; 32 is an eccentric wheel; 33 is an eccentric pull rod; 34 is a small hydraulic cylinder; 35 is a hydraulic oil pipe; 36 is a control fixed seat; 37 is an extrusion roller; 38 is a wear-resistant rubber pad; 39 is an extrusion rotating shaft; 40 is an extrusion bearing; 41 is a double-groove pulley II; 42 is a transmission belt; 43 is a connecting belt; 44 is a control base; 45 is an electric telescopic rod; 46 is a control bearing; 47 is a control rotating shaft; 48 is a rotating extrusion disc; 49 is an annular groove; 50 is a compression spring; 51 is an extrusion sealing seat; 52 is a hydraulic cylinder; 53 is a C-shaped sliding seat; 54 is a micro servo motor; 55 is a rotating gear; 56 is a small pulley; 57 is a sliding frame; 58 is a gear groove guide rail; 59 is a conveying roller; 60 is a conveying belt; 61 is a conveying rotating shaft; 62 is a conveying bearing; 63 is a conveying driving motor; 64 is a cleaning connecting belt. Specific embodiments

[0031] The present invention will be specifically described below in conjunction with the accompanying drawings. As Figure 1-9 shown, a rapid sand screening device includes a fixed frame 1 and a sliding wheel 2 installed below the fixed frame 1. A lifting and adjusting sand discharging device is installed inside the fixed frame 1, a swaying screening frame device is installed inside the fixed frame 1, and a multi-layer rolling and cleaning screen device is installed inside the swaying screening frame device;

[0032] The shaking screening frame device includes a shaking frame 3 provided on the upper part of the fixed frame 1, supporting pulleys 4 are installed on both sides of the lower part of the shaking frame 3, sliding baffles 5 are provided on both sides of the supporting pulley 4, the sliding baffles 5 are fixedly connected to the fixed frame 1, the supporting pulley 4 is in sliding contact with the fixed frame 1, a hydraulic telescopic cylinder 6 is installed at the four corners of one side of the shaking frame 3, the telescopic end of the hydraulic telescopic cylinder 6 is fixedly connected to the fixed frame 1, a hydraulic oil branch pipe 7 is installed on the hydraulic telescopic cylinder 6, a shaking spring 8 is installed at the four corners of the other side of the shaking frame 3, the shaking spring 8 is fixedly connected to the fixed frame 1, and a driving platform 9 is installed at the rear end of the shaking frame 3 A driving motor 10 is installed on one side above the driving platform 9, and a reducer 11 is installed on the other side above the driving platform 9. The rotating end of the driving motor 10 is fixedly connected to the input end of the reducer 11, and a double-groove pulley 12 is installed at the output end of the reducer 11. A shaking driving device is provided under the driving platform 9; through the extension and contraction of the hydraulic telescopic cylinder 6 and the elastic cooperation of the shaking spring 8, the shaking frame 3 is controlled to shake reciprocatingly. Compared with the simple use of the hydraulic telescopic cylinder 6, during the reciprocating shaking, with the elasticity of the shaking spring 8, the device can remain stable during the reciprocating sliding, thereby ensuring the safe use of the equipment in the device.

[0033] The multi-layer rolling cleaning screen device includes four roller groups 13, the four roller groups 13 are located in the shaking frame 3, each roller group 13 is composed of four rollers 14, the four rollers 14 form a rectangle, and the other three roller groups 13 are sequentially mounted inside the outermost roller group 13, and the four roller groups 13 are respectively equipped with filter screens 15, and the mesh number of the filter screen 15 increases with the mounting of the roller groups 13. The rollers 14 are fixedly connected to the shaking frame 3 through the fixing seat 16 and the roller bearing 17, and a waste discharge inclined baffle 18 is installed on one side of each roller group 13, and a cleaning roller 19 is provided on one of the rollers in each roller group 13. Cleaning shafts 20 are installed at both ends of the cylinder 19, and a cleaning bearing 21 is installed at one end of the cleaning shaft 20. The cleaning bearing 21 is fixedly connected to the fixed seat 16. A cleaning double-groove pulley 22 is installed at one end of one of the cleaning shafts 20. The cleaning double-groove pulleys 22 are connected by a cleaning transmission belt 23. A filter screen rotation control device is provided in the shaking frame 3. Through the filter screen 15 arranged on the four roller groups 13, the corresponding filter screen 15 can be selected for screening according to the actual sand screening situation. At the same time, the filter screen 15 can be cleaned in time when screening sand through the cleaning roller 19, thereby ensuring the screening efficiency of the filter screen 15.

[0034] The shaking driving device includes an acceleration transmission mechanism 24 installed above the lower surface of the interior of the shaking frame 3, the power input end of the acceleration transmission mechanism 24 is connected to the double-groove pulley 12 through a belt 25, a shaking platform 26 is provided below the driving platform 9, the shaking platform 26 is fixedly connected to the shaking frame 3, a shaking bearing seat 27 is installed on one side above the shaking platform 26, a shaking bearing 28 is installed on the shaking bearing seat 27, a shaking shaft 29 is installed in the shaking bearing 28, a shaking pulley 30 is installed at one end of the shaking shaft 29, and the shaking pulley 30 is connected to the dynamic side of the acceleration transmission mechanism 24. The force output end is connected through belt 2 31, and an eccentric wheel 32 is installed at the other end of the shaking shaft 29, and an eccentric pull rod 33 is movably installed on the eccentric wheel 32. A small hydraulic cylinder 34 is installed on the other side above the shaking platform 26. The movable piston inside the small hydraulic cylinder 34 is movably connected to the eccentric pull rod 33. A hydraulic oil pipe 35 is installed on the small hydraulic cylinder 34, and the hydraulic oil pipe 35 is fixedly connected to the hydraulic oil branch pipe 7. Through the action of the acceleration transmission mechanism 24, the driving motor 10 can drive the eccentric wheel 32 to rotate rapidly, thereby ensuring the shaking of the shaking frame 3 and facilitating the power transmission of the device.

[0035] The filter screen rotation control device includes a control fixed seat 36 installed on both sides of the shaking frame 3, four groups of extrusion rollers 37 are arranged between the two control fixed seats 36, and the positions of the four groups of extrusion rollers 37 correspond to the positions of the four filter screens 15. Each group of extrusion rollers 37 has two, and the two extrusion rollers 37 are located on both sides of the filter screen 15. Wear-resistant rubber pads 38 are installed on the extrusion rollers 37. The two ends of the extrusion rollers 37 are connected to the control fixed seat 36 through an extrusion shaft 39 and an extrusion bearing 40. One of the extrusion rollers 37 of each group of extrusion rollers 37 is installed on the extrusion shaft 39. A double groove pulley 41 is installed, and the double groove pulleys 41 are connected by a transmission belt 42, one of the double groove pulleys 41 is connected to the double groove pulley 1 12 by a connecting belt 43, one of the extrusion rollers 37 is in active contact with the filter screen 15, and a certain gap is set between the other extrusion roller 37 and the filter screen 15, and an adjustment control device is provided on the control fixing seat 36, and the adjustment control device includes four control bases 44 installed on the control fixing seat 36, and the four control bases 44 correspond to the gap positions between the extrusion roller 37 and the filter screen 15 respectively. An electric telescopic rod 45 is installed on the control base 44, and a control bearing 46 is installed on the telescopic end of the electric telescopic rod 45. A control shaft 47 is installed in the control bearing 46, and a rotating extrusion disk 48 is installed on the control shaft 47. An annular groove 49 is opened on the side surfaces of both sides of the rotating extrusion disk 48, and a plurality of compression springs 50 are installed inside the annular groove 49. The compression springs 50 are evenly distributed in the annular groove 49, and an extrusion sealing seat 51 is provided in the annular groove 49. The extrusion sealing seat 51 is slidably connected to the annular groove 49, and the extrusion sealing seat 51 is fixedly connected to one end of the compression spring 50, through Extrusion rollers 37 are arranged on both sides of the filter screen 15, and wear-resistant rubber pads 38 are arranged on the extrusion rollers 37 to ensure the friction between the extrusion rollers 37 and the filter screen 15. The extension and retraction of the rotating extrusion disk 48 is controlled by the electric telescopic rod 45, so that the rotating extrusion disk 48 is inserted between the extrusion roller 37 and the filter screen 15, so that the extrusion roller 37 and the filter screen 15 can be fully in contact, and through the action of friction, the filter screen 15 can move with the extrusion roller 37, ensuring that the filter screen 15 can rotate on the roller group 13, so as to facilitate the screening of sand.

[0036] The lifting and adjusting sand discharging device includes two hydraulic cylinders 52 installed at both ends on one side inside the fixed frame 1. The telescopic ends of the hydraulic cylinders 52 are installed with U-shaped sliding seats 53. One end of the lower surface of the U-shaped sliding seat 53 is installed with a micro servo motor 54. The rotating end of the micro servo motor 54 is installed with a rotating gear 55. Small pulleys 56 are installed on the inner side surface of the U-shaped sliding seat 53. A sliding frame 57 is arranged between the two U-shaped sliding seats 53. The sliding frame 57 is inserted into the U-shaped sliding seat 53. The sliding frame 57 is slidably connected with the small pulleys 56. Gear groove guides 58 are installed on both sides of the lower surface of the sliding frame 57. The gear groove guides 58 are engaged with the rotating gear 55. Conveyor rollers 59 are arranged at both ends inside the sliding frame 57. A conveyor belt 60 is sleeved between the two conveyor rollers 59. The conveyor rollers 59 are connected with the sliding frame 57 through conveyor shafts 61 and conveyor bearings 62. A conveyor drive motor 63 is installed at one end of the sliding frame 57. The conveyor drive motor 63 is connected with the conveyor shaft 61 through gears. By the telescoping of the hydraulic cylinders 52 and the rotation of the micro servo motor 54, the position of the sliding frame 57 is controlled to be adjusted, so that the device can be adjusted below the corresponding filter screen 15 according to the screening situation of the sand, and then the screened sand is conveyed outside the device through the conveyor belt 60.

[0037] Working principle:

[0038] When the device needs to be used, first, the staff manually push the fixed frame 1, and the fixed frame 1 moves to the sand screening location by rolling on the ground through the sliding wheels 2;

[0039] At this time, the staff select the corresponding filter screen 15 for sand screening work according to the degree of sand screening required. By controlling the telescoping of the electric telescopic rod 45, the rotating extrusion disc 48 is controlled to move, and the rotating extrusion disc 48 at the position of the filter screen 15 to be used is inserted between the extrusion roller 37 and the filter screen 15. At this time, the extrusion sealing seat 51 on the rotating extrusion disc 48 contacts the extrusion roller 37 and the filter screen 15 respectively through the elastic force of the compression spring 46, and the friction force between the extrusion roller 37 and the extrusion sealing seat 51 is increased. At the same time, the friction force between the filter screen 15 and the extrusion sealing seat 51 is increased. At this time, the filter screen 15 is in close contact with the extrusion roller 37 under the extrusion of the two extrusion rollers 37 and the extrusion sealing seat 51.

[0040] After selecting the corresponding filter screen 15 at this time, first control the micro servo motor 54 to start working. The micro servo motor 54 drives the rotation of the rotating gear 55, and through the engagement of the rotating gear 55 and the gear grass guide rail 58, and at the same time through the action of the small pulley 56 between the sliding frame 57 and the U-shaped sliding seat 53, the sliding frame 57 starts to move out from under the filter screen 15. When the sliding frame 57 is completely moved out, then control the hydraulic cylinder 52 to start working. The hydraulic cylinder 52 drives the U-shaped sliding seat 53 to start height adjustment, so that the U-shaped sliding seat 53 is adjusted to the position under the filter screen 15 that needs to be used. After adjusting the height, then control the micro servo motor 54 to start working. The micro servo motor 54 drives the rotation of the rotating gear 55, and through the engagement of the rotating gear 55 and the gear grass guide rail 58, and at the same time through the action of the small pulley 56 between the sliding frame 57 and the U-shaped sliding seat 53, the sliding frame 57 starts to move downward under the filter screen 15. When the sliding frame 57 moves to the appropriate position, then control the micro servo motor 54 to stop working. And when the sliding frame 57 is exactly under the filter screen 15 that needs to be used, this operation is not required;

[0041] At this time, the device is set up. Control the drive motor 10 and the conveyor drive motor 63 to start working, and place the sand above the device through an external device. Through the funnel arranged above the shaking frame 3, the sand is gathered above the filter screen 15 to prevent the sand from leaking from both sides of the filter screen 15;

[0042] The rotation of the conveyor drive motor 63, through the action of the gears, drives the conveyor rotating shaft 61 to start rotating. The rotation of the conveyor rotating shaft 61 drives the conveyor drum 59 to rotate, so that the conveyor belt 60 starts to rotate. And when the sand screening is completed and falls above the conveyor belt 60, through the rotation of the conveyor belt 60, the sand is conveyed into the storage device on one side of the fixed frame 1;

[0043] The rotation of the driving motor 10 is decelerated by the action of the reducer 11, so that the output shaft of the reducer 11 starts to rotate, and the reducer 11 drives the double-groove pulley 12 to start rotating, and the double-groove pulley 12 drives the acceleration transmission mechanism 24 to start rotating through the action of the belt 1 25, and accelerates through the acceleration transmission mechanism 24 to increase the speed, and the acceleration transmission mechanism 24 drives the shaking pulley 30 to rotate through the action of the belt 2 31, so that the shaking pulley 30 drives the shaking shaft 29 to start welding, and the shaking shaft 29 can rotate smoothly on the shaking platform 26 through the action of the shaking bearing seat 27 and the shaking bearing 28, and the shaking shaft 29 drives the eccentric wheel 32 to start rotating, and the eccentric flange on the eccentric wheel 32 drives the eccentric pull rod 33 to move, so that the eccentric pull rod 33 drives the moving piston in the small hydraulic cylinder 34 to move back and forth, and the small hydraulic cylinder 34 is connected to the hydraulic telescopic cylinder 6 through the hydraulic oil branch pipe 7 and the hydraulic oil pipe 35, so that through the action of the hydraulic oil, when the moving piston in the small hydraulic cylinder 34 moves back and forth, the telescopic end of the hydraulic telescopic cylinder 6 begins to reciprocate and retract, and the rocking frame 3 can slide laterally on the fixed frame 1 through the action of the supporting pulley 4, and slide and limit through the action of the sliding baffle 5. When the hydraulic telescopic cylinder 6 reciprocates and retracts, it drives the rocking frame 3 to reciprocate and retract, and the rocking spring 8 on the other side of the rocking frame is synchronously retracted with the movement of the rocking frame 3, effectively reducing the rocking feeling of the device, and ensuring the high-frequency rocking of the rocking frame 3, while ensuring the safe use of the device on the rocking frame 3;

[0044] The high-frequency shaking of the shaking frame 3 drives the filter screen 15 to shake at a high frequency, so that the sand is quickly screened on the filter screen 15. During the screening process, the sand is screened through the screens 15 with gradually increasing mesh sizes, which can effectively improve the speed of sand screening and avoid the problem of sand accumulation caused by the slow screening speed of the screen.

[0045] The double-grooved pulley 1 12 is connected to the double-grooved pulley 2 41 through the connecting belt 43, thereby driving the double-grooved pulley 2 41 to start rotating, and the double-grooved pulley 2 41 causes the other double-grooved pulley 2 41 to start rotating through the action of the transmission belt 42, and the double-grooved pulley 2 41 drives the extrusion shaft 39 to start rotating, and the extrusion shaft 39 drives the extrusion roller 37 to start rotating, thereby ensuring that there is an extrusion roller 37 in each group of extrusion rollers 37 to rotate, and at this time, when the extrusion roller 37 rotates, the extrusion sealing seat 51 on the rotating extrusion disk 48 is squeezed to make the filter screen 15 fully contact with the extrusion roller 37, so that the filter screen 15 is driven to move when the extrusion roller 37 rotates, and the rotating extrusion disk 48 is rotated by the movement of the filter screen 15, thereby ensuring that the filter screen 15 can continue to move;

[0046] The filter screen 15 is operated by the roller group 13 composed of four rollers 14. As the filter screen 15 moves, the filter screen 15 rotates on the roller group 13, so that the sand is screened while moving on the filter screen 15. Since one of the double-groove pulleys 41 is connected to the cleaning double-groove pulley 22 through the cleaning connecting belt 64, the cleaning double-groove pulley 22 starts to rotate, and through the action of the cleaning transmission belt 23, the other cleaning double-groove pulleys 22 start to rotate, and the rotation of the cleaning double-groove pulley 22 drives the cleaning shaft 20 to rotate, so that The cleaning shaft 20 drives the cleaning drum 19 to start rotating, and the filter screen 15 gradually screens the sand as the shaking frame 3 reciprocates, and moves driven by the squeezing drum 37, so that the filter screen 15 moves the part where the sand has been screened to the cleaning drum 19. As the cleaning drum 19 rotates, the brush on the cleaning drum 19 cleans the sand stuck on the filter screen 15, and then the waste residue remaining on the filter screen 15 falls onto the waste discharge inclined baffle 18 through the rotation of the filter screen 15, and slides to the other side of the fixed frame by its own gravity;

[0047] When the sand screening work is completed, the entire device can be powered off. When it is used again, the operation sequence is followed again to screen the sand again.

[0048] By continuously rotating the filter screen 15 and shaking the shaking frame 3 at a high frequency, the filter screen 15 after screening is cleaned by the cleaning drum 19, so that the filter screen 15 can always perform efficient sand screening work, which greatly facilitates the sand screening work, saves the time used for sand screening, and facilitates the operation of the staff.

[0049] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A sand rapid screening device, comprising a fixed frame (1) and a sliding wheel (2) installed below the fixed frame (1), characterized in that: A lifting and adjusting sand discharging device is installed in the fixed frame (1), a shaking screening frame device is installed inside the fixed frame (1), and a multi-layer rolling and sweeping screen device is installed inside the shaking screening frame device; The shaking type screening frame device comprises a shaking frame (3) provided inside and above the fixed frame (1), supporting pulleys (4) being installed on both sides of the lower side of the shaking frame (3), sliding baffles (5) being provided on both sides of the supporting pulley (4), the sliding baffles (5) being fixedly connected to the fixed frame (1), the supporting pulley (4) being in sliding contact with the fixed frame (1), hydraulic telescopic cylinders (6) being installed at four corners of one side of the shaking frame (3), the telescopic ends of the hydraulic telescopic cylinders (6) being fixedly connected to the fixed frame (1), and hydraulic oil branch pipes (7) being installed on the hydraulic telescopic cylinders (6). , shaking springs (8) are installed at the four corners of the other side of the shaking frame (3), and the shaking springs (8) are fixedly connected to the fixed frame (1). A driving platform (9) is installed at the rear end of the shaking frame (3). A driving motor (10) is installed on one side above the driving platform (9), and a reducer (11) is installed on the other side above the driving platform (9). The rotating end of the driving motor (10) is fixedly connected to the input end of the reducer (11), and a double-groove pulley (12) is installed at the output end of the reducer (11). A shaking driving device is provided below the driving platform (9); The multi-layer rolling sweeping screen device comprises four roller groups (13), the four roller groups (13) being located in a shaking frame (3), each roller group (13) being composed of four rollers (14), the four rollers (14) forming a rectangle, the other three roller groups (13) being sequentially mounted inside the outermost roller group (13), the four roller groups (13) being respectively mounted with filter screens (15), the mesh size of the filter screens (15) increasing as the roller groups (13) are mounted, the rollers (14) being fixedly connected to the shaking frame (3) via a fixing seat (16) and a roller bearing (17). A waste discharge inclined baffle (18) is installed on one side of each roller group (13), a cleaning roller (19) is provided on one of the rollers in each roller group (13), cleaning shafts (20) are installed at both ends of the cleaning roller (19), a cleaning bearing (21) is installed at one end of the cleaning shaft (20), and the cleaning bearing (21) is fixedly connected to the fixed seat (16), a cleaning double-groove pulley (22) is installed at one end of one of the cleaning shafts (20), and the cleaning double-groove pulleys (22) are connected by a cleaning transmission belt (23), and a filter screen rotation control device is provided in the shaking frame (3).

2. A sand rapid screening device according to claim 1, characterized in that: The shaking driving device comprises an acceleration transmission mechanism (24) installed above the lower surface of the shaking frame (3), the power input end of the acceleration transmission mechanism (24) is connected to a double-groove pulley (12) via a belt (25), a shaking platform (26) is provided below the driving platform (9), the shaking platform (26) is fixedly connected to the shaking frame (3), a shaking bearing seat (27) is installed on one side above the shaking platform (26), a shaking bearing (28) is installed on the shaking bearing seat (27), a shaking shaft (29) is installed in the shaking bearing (28), and the shaking shaft (29) A shaking pulley (30) is installed at one end, and the shaking pulley (30) is connected to the power output end of the acceleration transmission mechanism (24) through a second belt (31). An eccentric wheel (32) is installed at the other end of the shaking shaft (29), and an eccentric pull rod (33) is movably installed on the eccentric wheel (32). A small hydraulic cylinder (34) is installed on the other side above the shaking platform (26), and a movable piston inside the small hydraulic cylinder (34) is movably connected to the eccentric pull rod (33). A hydraulic oil pipe (35) is installed on the small hydraulic cylinder (34), and the hydraulic oil pipe (35) is fixedly connected to the hydraulic oil branch pipe (7).

3. A sand rapid screening device according to claim 1, characterized in that: The filter screen rotation control device comprises control fixing seats (36) installed on both sides of the inside of the shaking frame (3), four groups of extrusion rollers (37) are arranged between the two control fixing seats (36), the positions of the four groups of extrusion rollers (37) correspond to the positions of the four filter screens (15), each group of extrusion rollers (37) is two, the two extrusion rollers (37) are located on both sides of the filter screen (15), wear-resistant rubber pads (38) are installed on the extrusion rollers (37), and the two ends of the extrusion rollers (37) are connected to the control fixing seats through an extrusion rotating shaft (39) and an extrusion bearing (40). (36), a double-groove pulley 2 (41) is installed on the extrusion shaft (39) of one of the extrusion rollers (37) in each group of extrusion rollers (37), the double-groove pulleys 2 (41) are connected by a transmission belt (42), one of the double-groove pulleys 2 (41) is connected to the double-groove pulley 1 (12) by a connecting belt (43), one of the extrusion rollers (37) is in active contact with the filter screen (15), a certain gap is provided between the other extrusion roller (37) and the filter screen (15), and an adjustment control device is provided on the control fixing seat (36).

4. A sand rapid screening device according to claim 3, characterized in that: The adjustment and control device includes that four control bases (44) are installed on the control fixing base (36). The four control bases (44) respectively correspond to the gap positions between the extrusion roller (37) and the filter screen (15). An electric telescopic rod (45) is installed on the control base (44). The telescopic end of the electric telescopic rod (45) is installed with a control bearing (46). A control rotating shaft (47) is installed inside the control bearing (46). A rotating extrusion disc (48) is installed on the control rotating shaft (47). Annular grooves (49) are formed on the two side surfaces of the rotating extrusion disc (48). A number of compression springs (50) are installed inside the annular grooves (49). The compression springs (50) are evenly distributed in the annular grooves (49). An extrusion sealing seat (51) is arranged inside the annular grooves (49). The extrusion sealing seat (51) is slidably connected with the annular grooves (49). One end of the extrusion sealing seat (51) is fixedly connected with the compression spring (50).

5. A sand rapid screening device according to claim 1, characterized in that: The lifting and adjusting sand discharging device includes that two hydraulic cylinders (52) are installed at both ends of one side inside the fixed frame (1). The telescopic end of the hydraulic cylinder (52) is installed with a U-shaped sliding seat (53). A micro servo motor (54) is installed at one end of the lower surface of the U-shaped sliding seat (53). A rotating gear (55) is installed at the rotating end of the micro servo motor (54). Small pulleys (56) are installed on the inner side surfaces of the U-shaped sliding seat (53). A sliding frame (57) is arranged between the two U-shaped sliding seats (53). The sliding frame (57) is inserted into the U-shaped sliding seat (53). The sliding frame (57) is slidably connected with the small pulleys (56). Gear groove guide rails (58) are installed on both sides of the lower surface of the sliding frame (57). The gear groove guide rails (58) are engaged with the rotating gear (55). Conveyor rollers (59) are arranged at both ends inside the sliding frame (57). A conveyor belt (60) is sleeved between the two conveyor rollers (59). The conveyor rollers (59) are connected with the sliding frame (57) through conveyor rotating shafts (61) and conveyor bearings (62). A conveyor driving motor (63) is installed at one end of the sliding frame (57). The conveyor driving motor (63) is connected with the conveyor rotating shaft (61) through gears.

6. A sand rapid screening device according to claim 1, characterized in that: The cleaning double-groove pulley (22) is connected with one of the double-groove pulleys two (41) through a cleaning connecting belt (64).

7. A sand rapid screening device according to claim 4, characterized in that: The extrusion sealing seat (51) is in sliding contact with one of the extrusion rollers (37) in each group of extrusion rollers (37). The extrusion sealing seat (51) is in movable contact with the filter screen (15).

8. A sand rapid screening device according to claim 1, characterized in that: The brush on the cleaning roller (19) is in movable contact with the filter screen (15). The rotating speed of the cleaning roller (19) is higher than that of the roller (14).

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