CN115301536A

CN115301536A - Soil scattering particle screening device and method for geotechnical engineering

Info

Publication number: CN115301536A
Application number: CN202210928979.3A
Authority: CN
Inventors: 贾殿琴
Original assignee: Individual
Current assignee: Beijing Urban Construction Exploration and Surveying Design Research Institute Co Ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-11-08
Anticipated expiration: 2042-08-03
Also published as: CN115301536B

Abstract

The invention discloses a loose soil particle screening device and a screening method for geotechnical engineering, and belongs to the technical field of particle screening. The utility model provides a geotechnical engineering is with loosing native granule screening plant, includes the chassis that has the case that shakes, still includes: the feeding frame is arranged on one side of the vibration box; the base is arranged below the chassis and is connected with the chassis through a rubber rod; the vibrating device is arranged in the base; the first motor is arranged on the vibration box, and a cleaning assembly is connected between the output end of the first motor and the bottom in the vibration box; the reinforcing component is installed on the base, the output end of the first motor drives the rotating shaft to rotate, a center opening matched with the rotating shaft is formed in the center of the multilayer filter screen, the rotating shaft drives the hairbrush group to clean meshes of the filter screen through the extension rod, and the problem of particle blockage is reduced.

Description

Soil scattering particle screening device and screening method for geotechnical engineering

Technical Field

The invention relates to the technical field of particle screening, in particular to a loose soil particle screening device and a screening method for geotechnical engineering.

Background

The operation of classifying the ore into several grades according to the particle size by using a sieve is called sieving, and the sieving operation is indispensable in the metallurgical industry, can sieve out the fine particle part from the feeding ore of a crusher, can increase the productivity of the crusher and can avoid over-crushing; before jigging and dry magnetic separation, the ore is usually classified into several grades according to the granularity, and the grading effect can be improved by respectively processing the grades.

However, most of the mining plants are located outdoors, and the factors such as water vapor in the air, rain and snow weather and the like cause loose soil materials to be mutually bonded into a cluster and to be difficult to loosen or to be adhered to the screen surface, so that the effective screening area of the screen surface is reduced, and the screening efficiency is reduced. The material group is difficult to loosen, layer and move integrally, so that the screening process cannot be finished smoothly. Therefore, screening of wet fine-grained viscous materials is a major problem to be solved urgently in screening operation, and therefore a loose soil particle screening device for geotechnical engineering needs to be designed.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, loose soil materials are bonded with each other to form a cluster, are difficult to loosen or are adhered to a screen surface, so that the effective screening area of the screen surface is reduced, and the screening efficiency is reduced, and provides a loose soil particle screening device and a screening method for geotechnical engineering.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a geotechnical engineering is with loosing native granule screening plant, includes the chassis that has the case that shakes, still includes: the feeding frame is arranged on one side of the vibrating box; the base is arranged below the chassis and is connected with the chassis through a rubber rod; the vibrating device is arranged in the base; the first motor is arranged on the vibration box, and a cleaning assembly is connected between the output end of the first motor and the bottom in the vibration box; a reinforcement assembly mounted on the base.

In order to facilitate the installation of the filter screen, soil particles are conveniently scattered to be screened layer by layer, preferably, the vibration box comprises a box body fixedly arranged on a chassis, a plurality of lower connecting plates are arranged in the box body at equal intervals, the filter screen is arranged on the lower connecting plates, upper connecting plates with the same specifications as the lower connecting plates are arranged on the filter screen, the lower connecting plates and the upper connecting plates are fixedly connected through bolts, wherein a circle of caulking grooves are formed in the lower connecting plates, a circle of sealing gasket is arranged below the filter screen, and flanges matched with the caulking grooves are formed in the sealing gasket in an integrated mode.

In order to realize material loading efficiency maximize, preferably, the material loading frame is including fixing at subaerial first fixing base and second fixing base, the second motor is installed to one side of first fixing base, the mounting panel is installed to the symmetry between first fixing base and the second fixing base, two be connected with a plurality of driving rollers through the bearing rotation between the mounting panel, the output of second motor runs through first fixing base and is connected through the driving roller of shaft coupling and homonymy, and a plurality of the tensioning has the conveyer belt between the driving roller.

In order to reduce that the in-process raise dust of loose soil granule is more at the transport, furtherly, the symmetry set firmly a plurality of bracing pieces on the mounting panel, it is a plurality of install the dust guard jointly on the bracing piece.

In order to improve the maximization of the rotating and shaking efficiency of the vibration box during working, preferably, the base comprises a surrounding plate positioned below the chassis and a horizontal plate fixedly connected with the surrounding plate, the surrounding plate is of a round platform structure with a small upper part and a large lower part, a sliding groove is formed in an opening at the upper end of the surrounding plate, a plurality of balls are connected in the sliding groove in a sliding mode, and the balls are abutted to the chassis.

In order to drive the case that shakes and rock, realize screening layer upon layer to loose native granule, furtherly, vibrating device is including setting firmly the linking seat in the bounding wall, it is connected with the back shaft to rotate through the bearing in the seat to link up, first band pulley is installed to the lower extreme of back shaft, the upper end of back shaft has set firmly the regulation cabinet, set aside along length on the regulation cabinet and seted up the orbit groove, sliding connection has the regulating block in the orbit groove, the connection pad has set firmly on the regulating block, the connection pad is in the same place with chassis installation, install the third motor on the horizontal plate, the second band pulley is installed to the output of third motor, be connected through belt drive between first band pulley and the second band pulley.

According to factors such as the size of loose soil granule and humidity, for the rotation range of regulation case that shakes, improve screening ability, further, regulating block internal thread connection has the screw lead screw, the both ends of screw lead screw are changeed to link together with the orbit inslot wall on the regulating station, install the fourth motor through the bolt on the regulating station, the output of fourth motor passes through the shaft coupling and links to each other with the screw lead screw, wherein, the guide way has been seted up in the outside extension in both sides of orbit inslot wall on the regulating station, the slider is installed to the both sides of regulating block, the slider cooperation slides in the guide way.

In order to reduce the jam of filter screen, improve screening efficiency, furtherly, clean subassembly includes the rotation axis that links together with first motor output, horizontal installation has the extension rod on the rotation axis, one side that the extension rod is close to the filter screen is installed and is had the brush group.

For the stability of the improvement device, furtherly, consolidate the subassembly and connect the supporting leg in the horizontal plate bottom including rotating, the supporting leg is kept away from the one end threaded connection of horizontal plate and is had adjusting screw, adjusting screw's lower extreme has set firmly the callus on the sole, the engaging lug is installed to one side of supporting leg, it is connected with the pull rod to rotate on the horizontal plate, the pull rod is pegged graft fixedly with the engaging lug.

A construction method for screening loose soil particles for geotechnical engineering comprises the following operation steps:

step 1: the loose soil particles are conveyed to a vibration box through a feeding frame, and are driven to rotate and shake uniformly through a vibration device, so that the loose soil particles form horizontal and throwing three-dimensional rolling motion on a filter screen and are screened layer by layer;

step 2: during the operation of a fourth motor in the vibration device, the adjusting block is driven to move in the adjusting table, and the eccentric rotation range of the vibration box is changed;

and step 3: the filter screen is cleaned by a brush component layer arranged in the cleaning component under the driving of the first motor.

Compared with the prior art, the invention provides a diagnosis and treatment bed with a bed sheet replacing device, which has the following beneficial effects:

1. according to the loose soil particle screening device and the screening method for geotechnical engineering, the output end of the first motor drives the rotating shaft to rotate, the center of the multi-layer filter screen is provided with the center opening matched with the rotating shaft, and the rotating shaft drives the brush group to clean the meshes of the filter screen through the extension rod, so that the problem of particle blockage is reduced;

2. according to the loose soil particle screening device and the screening method for geotechnical engineering, the output end of a third motor drives a second belt wheel to rotate, the rotating second belt wheel drives a first belt wheel to rotate through a belt, the rotating first belt wheel drives a coaxial support shaft to rotate, so that the support shaft drives a vibration box to eccentrically rotate and screen through a connecting disc, the output end of a fourth motor drives a threaded screw to rotate according to the state of loose soil particles, under the constraint of sliding blocks on two sides, an adjusting block linearly moves on the threaded screw, the rotating radius of the vibration box is changed, and the screening efficiency of the loose soil particles is further improved;

3. according to the soil scattering particle screening device and the screening method for geotechnical engineering, due to the fact that some outdoor construction sites are not flat, when the device is installed, the supporting legs are rotated to be perpendicular to the horizontal plate, the adjusting screw rods are adjusted according to terrain, foot pads are in contact with the ground, the pull rods are inserted into the connecting lugs, a triangular structure is formed among the pull rods, the supporting legs and the horizontal plate, and the stability of the bottom of the device is improved.

Drawings

FIG. 1 is a schematic structural diagram of a loose soil particle screening device and a screening method for geotechnical engineering, which are provided by the invention;

FIG. 2 is a schematic view of a filter screen installation structure of the loose soil particle screening device and the screening method for geotechnical engineering provided by the invention;

FIG. 3 is a schematic structural view of a vibrating device for the screening device and the screening method of loose soil particles for geotechnical engineering, which are provided by the invention;

FIG. 4 is a schematic structural diagram of a portion A in FIG. 3 of a loose soil particle screening device and a screening method for geotechnical engineering according to the present invention;

FIG. 5 is a schematic structural view of a cleaning assembly of the loose soil particle screening device and the screening method for geotechnical engineering according to the present invention;

fig. 6 is a schematic structural diagram of a part B in fig. 1 of a loose soil particle screening device and a screening method for geotechnical engineering according to the present invention.

In the figure: 1. a vibration box; 101. a box body; 102. a lower connecting plate; 1021. caulking grooves; 103. a filter screen; 104. an upper connecting plate; 105. a gasket; 1051. a flange; 2. a chassis; 3. a connecting disc; 4. a base; 401. enclosing plates; 4011. a chute; 402. a horizontal plate; 403. a ball bearing; 5. a first motor; 6. a first fixed seat; 7. a second fixed seat; 8. a pull rod; 9. a conveyor belt; 10. a second motor; 11. a support bar; 12. a dust-proof plate; 13. a linking seat; 14. a support shaft; 15. an adjusting table; 1501. a track groove; 1502. a guide groove; 16. an adjusting block; 17. a threaded lead screw; 18. a fourth motor; 19. a third motor; 20. a first pulley; 21. a second pulley; 22. a rotating shaft; 23. an extension rod; 24. a brush group; 25. supporting legs; 26. adjusting the screw rod; 27. a foot pad; 28. connecting lugs; 29. a rubber rod; 30. a driving roller; 31. mounting a plate; 32. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1 to 6, a loose soil particle screening device for geotechnical engineering comprises a chassis 2 with a vibration box 1, and further comprises: the feeding frame is arranged on one side of the vibration box 1; the base 4 is arranged below the chassis 2 and is connected with the chassis 2 through a rubber rod 29; the vibrating device is arranged in the base 4; the first motor 5 is arranged on the vibration box 1, and a cleaning component is connected between the output end of the first motor 5 and the bottom in the vibration box 1; consolidate the subassembly, install on base 4, when sieving scattered native granule, scattered native granule is carried to case 1 that shakes through last work or material rest, it is even to drive scattered native granule through vibrating device and turn round, make scattered native granule form the level on filter screen 103 and carry out screening layer upon layer with throwing three-dimensional rolling motion, and when screening, the brush group 24 layering that sets up under the drive of first motor 5 clean the subassembly clears up filter screen 103, reduce the jam of filter screen 103, improve screening efficiency.

Furthermore, in order to improve the efficiency transmission between the vibration box 1 and the base 4, the base 4 includes a surrounding plate 401 located below the chassis 2 and a horizontal plate 402 fixedly connected with the surrounding plate 401, the surrounding plate 401 is a circular truncated cone structure with a small top and a large bottom, a sliding groove 4011 is provided at an opening at the upper end of the surrounding plate 401, a plurality of balls 403 are slidably connected in the sliding groove 4011, and the balls 403 are abutted to the chassis 2.

Example 2:

referring to fig. 2, basically the same as embodiment 1, further, the vibration box 1 includes a box body 101 fixedly disposed on the chassis 2, a plurality of lower connection plates 102 are equidistantly disposed in the box body 101, a filter screen 103 is disposed on any lower connection plate 102, an upper connection plate 104 having the same specification as the lower connection plate 102 is disposed on the filter screen 103, the lower connection plate 102 is fixedly connected to the upper connection plate 104 through bolts, wherein a circle of caulking groove 1021 is disposed on the lower connection plate 102, a circle of gasket 105 is disposed below the filter screen 103, a flange 1051 adapted to the caulking groove 1021 is integrally formed on the gasket 105, a screened lower cylinder is disposed on the vibration box 1, when the filter screen 103 is mounted, the gasket 105 disposed on the filter screen 103 makes up a gap between the filter screen 103 and the lower connection plate 102 and the upper connection plate 104, so as to reduce the vibration of the filter screen 103, and at the same time, the flange 1051 disposed on the gasket 105 is embedded into the caulking groove 1021 after the lower connection plate 102 and the upper connection plate 104 are connected through bolts, thereby further improving the stability of the filter screen 103.

Example 3:

referring to fig. 1, the same as embodiment 1, further, the feeding frame includes a first fixing seat 6 and a second fixing seat 7 fixed on the ground, a second motor 10 is installed on one side of the first fixing seat 6, mounting plates 31 are symmetrically installed between the first fixing seat 6 and the second fixing seat 7, a plurality of driving rollers 30 are connected between the two mounting plates 31 through bearings in a rotating manner, an output end of the second motor 10 penetrates through the first fixing seat 6 and is connected with the driving rollers 30 on the same side through couplers, a conveying belt 9 is tensioned between the plurality of driving rollers 30, when feeding soil scattering particles, an output shaft of the second motor 10 drives the driving rollers 30 on the same side to rotate, the conveying belt 9 tensioned between the mounting plates 31 rotates, and the soil scattering particles are conveyed to the vibration box 1.

Furthermore, in order to reduce the dust emission of the scattered soil particles, a plurality of support rods 11 are fixedly arranged on the symmetrical mounting plate 31, and a dust guard 12 is jointly arranged on the plurality of support rods 11.

Example 4:

referring to fig. 3-4, substantially the same as embodiment 1, further, the vibration device includes a connection seat 13 fixed in the enclosure 401, a support shaft 14 is rotatably connected in the connection seat 13 through a bearing, a first pulley 20 is installed at a lower end of the support shaft 14, an adjustment table 15 is fixed at an upper end of the support shaft 14, a track groove 1501 is formed in the adjustment table 15 along the length, an adjustment block 16 is slidably connected in the track groove 1501, a connection disc 3 is fixedly installed on the adjustment block 16, the connection disc 3 is installed with the chassis 2, a third motor 19 is installed on the horizontal plate 402, a second pulley 21 is installed at an output end of the third motor 19, the first pulley 20 and the second pulley 21 are connected through a belt, an output end of the third motor 19 drives the second pulley 21 to rotate, the rotating second pulley 21 drives the first pulley 20 to rotate through a belt, the rotating first pulley 20 drives the coaxial support shaft 14 to rotate, so that the support shaft 14 drives the vibration box 1 to eccentrically rotate and sieve through the connection disc 3.

Furthermore, a threaded lead screw 17 is connected to the adjusting block 16 through an internal thread, two ends of the threaded lead screw 17 are connected with the inner wall of the track groove 1501 on the adjusting table 15 in a rotating mode, a fourth motor 18 is installed on the adjusting table 15 through a bolt, the output end of the fourth motor 18 is connected with the threaded lead screw 17 through a coupler, guide grooves 1502 are formed in two sides of the inner wall of the track groove 1501 on the adjusting table 15 in an outward extending mode, sliding blocks 32 are installed on two sides of the adjusting block 16, the sliding blocks 32 slide in the guide grooves 1502 in a matching mode, when the rotating range of the vibration box 1 is adjusted, the output end of the fourth motor 18 drives the threaded lead screw 17 to rotate, under the constraint of the sliding blocks 32 on the two sides, the adjusting block 16 moves on the threaded lead screw 17 in a straight line, and the rotating radius of the vibration box 1 is changed.

Example 5:

referring to fig. 5, basically the same as embodiment 1, further, the cleaning assembly includes a rotating shaft 22 connected to an output end of the first motor 5, an extension rod 23 is horizontally installed on the rotating shaft 22, a brush set 24 is installed on a side of the extension rod 23 close to the filter screen 103, in the screening process, the output end of the first motor 5 drives the rotating shaft 22 to rotate, a central opening matched with the rotating shaft 22 is formed in the center of the multi-layer filter screen 103, and the rotating shaft 22 drives the brush set 24 through the extension rod 23 to clean the meshes of the filter screen 103, so as to reduce the problem of particle blockage.

Example 6:

referring to fig. 6, basically the same as embodiment 1, further, the reinforcing component includes a supporting leg 25 rotatably connected to the bottom of the horizontal plate 402, one end of the supporting leg 25, far from the horizontal plate 402, is connected with an adjusting screw 26 through a thread, a foot pad 27 is fixedly arranged at the lower end of the adjusting screw 26, a connecting lug 28 is installed at one side of the supporting leg 25, a pull rod 8 is rotatably connected to the horizontal plate 402, the pull rod 8 is fixedly connected with the connecting lug 28 in an inserting manner, due to unevenness of some outdoor construction sites, when the device is installed, the supporting leg 25 is rotated to be perpendicular to the horizontal plate 402, the adjusting screw 26 is adjusted according to terrain, the foot pad 27 is contacted with the ground, the pull rod 8 is inserted into the connecting lug 28, the pull rod 8, a triangular structure is formed between the supporting leg 25 and the horizontal plate 402, and the stability of the bottom of the device is improved.

step 1: the loose soil particles are conveyed to the vibration box 1 through the feeding frame, and are driven to rotate and shake uniformly through the vibration device, so that the loose soil particles form horizontal and throwing three-dimensional rolling motion on the filter screen 103 and are screened layer by layer;

and 2, step: during the operation of the fourth motor 18 in the vibration device, the adjusting block 16 is driven to move in the adjusting table 15, and the eccentric rotation range of the vibration box 1 is changed;

and 3, step 3: the brush set 24 arranged in the cleaning assembly is driven by the first motor 5 to clean the filter screen 103 layer by layer.

Here, the overall operation is described once more throughout:

when the loose soil particles are discharged, the output shaft of the second motor 10 drives the transmission roller 30 on the same side to rotate, so that the conveying belt 9 tensioned between the mounting plates 31 rotates, the loose soil particles are conveyed to the vibration box 1, the output end of the third motor 19 drives the second belt wheel 21 to rotate, the rotating second belt wheel 21 drives the first belt wheel 20 to rotate through a belt, the rotating first belt wheel 20 drives the coaxial supporting shaft 14 to rotate, so that the supporting shaft 14 drives the vibration box 1 to eccentrically rotate and sieve through the connecting disc 3, according to the dry and wet state of the loose soil particles, the output end of the fourth motor 18 drives the threaded lead screw 17 to rotate, under the constraint of the sliders 32 on two sides, the adjusting block 16 linearly moves on the threaded lead screw 17, the rotating radius of the vibration box 1 is changed, the sieving efficiency is improved, in the sieving process, the output end of the first motor 5 drives the rotating shaft 22 to rotate, a central opening matched with the rotating shaft 22 is formed in the center of the multilayer filter screen 103, and the rotating shaft 22 drives the bristle group 24 to brush and clean the filter screen holes 103 through the rod 23, and the problem of particle blockage is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a geotechnical engineering is with loose native granule screening plant, is including having chassis (2) that shake case (1), its characterized in that still includes:

the feeding frame is arranged on one side of the vibration box (1);

the base (4) is arranged below the chassis (2) and is connected with the chassis (2) through a rubber rod (29);

the vibrating device is arranged in the base (4);

the first motor (5) is arranged on the vibration box (1), and a cleaning assembly is connected between the output end of the first motor (5) and the bottom in the vibration box (1);

a reinforcement assembly mounted on the base (4).

2. The soil scattering particle screening device for geotechnical engineering according to claim 1, wherein the vibration box (1) comprises a box body (101) fixedly arranged on the chassis (2), a plurality of lower connecting plates (102) are arranged in the box body (101) at equal intervals, a filter screen (103) is arranged on any one of the lower connecting plates (102), an upper connecting plate (104) with the same specification as the lower connecting plate (102) is arranged on the filter screen (103), the lower connecting plate (102) is fixedly connected with the upper connecting plate (104) through bolts,

wherein, seted up round caulking groove (1021) on lower connecting plate (102), round sealed pad (105) are installed to the below of filter screen (103), integrated into one piece formula is provided with flange (1051) with caulking groove (1021) looks adaptation on sealed pad (105).

3. The soil scattering particle screening device for geotechnical engineering according to claim 1, wherein the feeding frame comprises a first fixing seat (6) and a second fixing seat (7) which are fixed on the ground, a second motor (10) is installed on one side of the first fixing seat (6), mounting plates (31) are symmetrically installed between the first fixing seat (6) and the second fixing seat (7), two mounting plates (31) are rotatably connected with a plurality of transmission rollers (30) through bearings, the output end of the second motor (10) penetrates through the first fixing seat (6) and is connected with the transmission rollers (30) on the same side through couplers, and a conveying belt (9) is tensioned between the transmission rollers (30).

4. The device for screening loose soil particles for geotechnical engineering according to claim 3, wherein a plurality of support rods (11) are fixedly arranged on the symmetrical mounting plates (31), and dust-proof plates (12) are jointly arranged on the support rods (11).

5. The soil scattering particle screening device for geotechnical engineering according to claim 1, wherein the base (4) comprises a surrounding plate (401) located below the chassis (2) and a horizontal plate (402) fixedly connected with the surrounding plate (401), the surrounding plate (401) is of a round platform structure with a small top and a big bottom, a sliding groove (4011) is formed in an opening at the upper end of the surrounding plate (401), a plurality of balls (403) are connected in the sliding groove (4011), and the balls (403) abut against the chassis (2).

6. The soil dispersing particle screening device for geotechnical engineering according to claim 5, wherein the vibrating device comprises a connecting seat (13) fixedly arranged in a surrounding plate (401), a supporting shaft (14) is rotatably connected in the connecting seat (13) through a bearing, a first belt wheel (20) is installed at the lower end of the supporting shaft (14), an adjusting table (15) is fixedly arranged at the upper end of the supporting shaft (14), a track groove (1501) is formed in the adjusting table (15) along the length, an adjusting block (16) is connected in the track groove (1501) in a sliding mode, a connecting disc (3) is fixedly arranged on the adjusting block (16), the connecting disc (3) is installed together with the chassis (2), a third motor (19) is installed on the horizontal plate (402), a second belt wheel (21) is installed at the output end of the third motor (19), and the first belt wheel (20) is connected with the second belt wheel (21) through a transmission belt.

7. The soil dispersing particle screening device for geotechnical engineering according to claim 6, wherein a threaded lead screw (17) is connected to the adjusting block (16) in a threaded manner, two ends of the threaded lead screw (17) are connected with the inner wall of a track groove (1501) on the adjusting table (15) in a rotating manner, a fourth motor (18) is installed on the adjusting table (15) through a bolt, the output end of the fourth motor (18) is connected with the threaded lead screw (17) through a coupler,

guide grooves (1502) are formed in the two sides of the inner wall of the track groove (1501) on the adjusting table (15) in an outward extending mode, sliding blocks (32) are installed on the two sides of the adjusting block (16), and the sliding blocks (32) slide in the guide grooves (1502) in a matched mode.

8. The soil dispersing particle screening device for geotechnical engineering is characterized in that the cleaning assembly comprises a rotating shaft (22) connected with the output end of the first motor (5), an extension rod (23) is horizontally installed on the rotating shaft (22), and a brush set (24) is installed on one side, close to the filter screen (103), of the extension rod (23).

9. The geotechnical engineering is with loosing soil granule screening plant of claim 5, characterized in that, consolidate the subassembly and include rotation connection at the supporting leg (25) of horizontal plate (402) bottom, the one end threaded connection that the horizontal plate (402) was kept away from in supporting leg (25) has adjusting screw (26), the lower extreme of adjusting screw (26) has set firmly callus on the sole (27), engaging lug (28) are installed to one side of supporting leg (25), it is connected with pull rod (8) to rotate on horizontal plate (402), pull rod (8) and engaging lug (28) are pegged graft fixedly.

10. A construction method for screening loose soil particles for geotechnical engineering, which adopts the loose soil particle screening device for geotechnical engineering of any one of claims 1 to 9, and is characterized by comprising the following operation steps:

step 1: the loose soil particles are conveyed to the vibration box (1) through the feeding frame, and are driven to rotate and shake uniformly through the vibration device, so that the loose soil particles form horizontal and throwing three-dimensional rolling motion on the filter screen (103) and are screened layer by layer;

step 2: during the operation of a fourth motor (18) in the vibration device, the adjusting block (16) is driven to move in the adjusting table (15), and the eccentric rotation range of the vibration box (1) is changed;

and step 3: the brush group (24) arranged in the cleaning component is driven by the first motor (5) to clean the filter screen (103) layer by layer.