Polydisperse sand bed surface particle sorting device

Abstract

The invention discloses a multi-dispersion sand bed surface particle sorting device, and relates to the technical field of screening equipment, the multi-dispersion sand bed surface particle sorting device comprises a support and a discharging hopper fixedly connected to the inner side of the support, and a material guide sleeve is fixedly connected to a discharging opening of the discharging hopper; the multi-stage screening machine is arranged below the material guide sleeve; the rotary discharging mechanism is positioned at the bottom of the material guide sleeve and is used for uniformly dispersing the materials on the multi-stage screening machine; and the material guide frame is rotationally connected to the bottom of the material guide sleeve, and the interior of the material guide frame communicates with the material discharge opening of the material guide sleeve. The rotary discharging mechanism is arranged, the output end of a driving motor drives a first straight gear to rotate, so that a straight gear ring is driven to drive a material guide frame to rotate circumferentially, the discharging position is changed, the utilization rate of a screening plate on the multi-stage screening machine is increased, and the situation that materials are stacked at one position to affect the vibration screening efficiency is avoided; therefore, the overall screening efficiency of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a polydisperse sand bed particle sorting device. Background Art

[0002] The particles on the sand bed surface are mainly composed of sand particles of different particle sizes. The particle size distribution of these sand particles is wide, ranging from silt and clay particles smaller than 0.05 mm to pebbles of tens of millimeters or even larger. Therefore, a special multi-stage screening device is required to screen them when they are put into use.

[0003] The existing multi-stage screening devices for screening sand bed surface particles generally transport materials to the screen of the multi-stage screening device. Since the materials fall into the same position of the screen at one time and continuously, it takes a long time for the screen to screen the materials under the vibration of the vibration motor installed on the multi-stage screening device. Since the sand bed surface particles are discharged at the same position, other positions of the screen cannot be used, thereby reducing the screening efficiency. For this reason, we provide a multi-dispersed sand bed surface particle sorting device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-dispersed sand bed particle sorting device in order to solve the problem that materials falling on the screen are easily accumulated in one place and affect the screening efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-dispersed sand bed particle sorting device, comprising: a bracket and a lower hopper fixedly connected to the inner side of the bracket, a material guide sleeve fixedly connected to the lower material port of the lower hopper; a multi-stage screening machine, the multi-stage screening machine is arranged below the material guide sleeve; a rotary discharge mechanism, located at the bottom of the material guide sleeve, for evenly dispersing the material on the multi-stage screening machine; a material guide frame, the material guide frame is rotatably connected to the bottom of the material guide sleeve, and the interior of the material guide frame is in communication with the material guide sleeve; an intermittent discharge auxiliary device, located at the material guide port of the material guide frame, for intermittently opening and closing the material guide port of the material guide frame; a replacement auxiliary component, located at the bottom of the material guide frame, for adjusting the opening position of the material guide port of the material guide frame.

[0006] As a further solution of the present invention: the rotary discharge mechanism includes a spur gear ring fixedly connected to the top of the material guide frame, and the spur gear ring is rotatably connected to the material guide sleeve, one side of the material guide sleeve is fixedly connected to a fixed seat, a drive motor is installed below the fixed seat, and the output end of the drive motor is fixedly connected to a first spur gear meshing with the spur gear ring.

[0007] As a further solution of the present invention: the intermittent discharging assistant includes three groups of third auxiliary seats fixedly connected to the bottom of the material guide frame, and a rotating block is arranged on the inner side of each group of the third auxiliary seats, one end of the rotating block is fixedly connected to a baffle, and the outer walls on both sides of the rotating block are fixedly connected to a rotating shaft, and one end of the rotating shaft passes through the outside of the third auxiliary seat and is rotatably connected to the third auxiliary seat, one end of the rotating shaft is fixedly connected to a fixing ring, and a torsion spring is installed between the fixing ring and the third auxiliary seat.

[0008] As a further solution of the present invention: the intermittent discharging assistant also includes a sliding rod slidably connected to the inner side of the third auxiliary seat, and one end of the sliding rod passes through the outside of the third auxiliary seat and is fixedly connected to a U-shaped rod, a power spring is installed between the U-shaped rod and the third auxiliary seat, both ends of the U-shaped rod are fixedly connected to a spur rack, the outer wall of the fixing ring is fixedly connected to a second spur gear meshing with the spur rack, and the bottom of the guide frame is provided with a power component for reciprocatingly extruding the U-shaped rod.

[0009] As a further solution of the present invention: the power assembly includes a first auxiliary seat fixedly connected to the bottom of the material guide frame, a power rod is slidably connected to the inner side of the first auxiliary seat, one end of the power rod passes through the inner side of the first auxiliary seat and is fixedly connected to a connecting ring, a power plate is provided on one side of the connecting ring, and a power push rod is fixedly connected to the top of the power plate.

[0010] As a further solution of the present invention: the power assembly also includes a circular ring fixedly connected to the outer wall of the power rod, a connecting spring is installed between the circular ring and the first auxiliary seat, the other end of the power rod is rotatably connected to a roller, the bottom of the lower hopper is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a power ring, the inner side of the power ring is fixedly connected to a plurality of arched ramps, and the plurality of arched ramps are distributed around the inner side of the power ring.

[0011] As a further solution of the present invention: the replacement auxiliary part includes a second auxiliary seat fixedly connected to the bottom of the material guide frame, the inner side of the second auxiliary seat is rotatably connected to a reciprocating screw, the outer wall of the reciprocating screw is threadedly connected to a sliding block, the top of the sliding block is slidably connected to a guide block, the top of the guide block is fixedly connected to the power plate, one side of the power plate is fixedly connected to a limiting block, the inner side of the connecting ring is provided with a limiting groove matching the limiting block, and the power plate is slidably connected to the connecting ring through a limiting block fixedly connected on one side.

[0012] As a further scheme of the present invention: the replacement auxiliary part also includes a suspension seat fixedly connected to the bottom of the material guide frame, the inner side of the suspension seat is rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected to a bevel gear, the inner side of the power ring is fixedly connected with a fixing rod, one side of the fixing rod is fixedly connected with an arc-shaped bevel rack meshing with the bevel gear, the outer wall of the rotating shaft is fixedly connected to a large synchronous wheel, one end of the reciprocating screw rod is fixedly connected to a connecting shaft, and one end of the connecting shaft passes through the outside of the second auxiliary seat and is fixedly connected to a small synchronous wheel, and the outer walls of the small synchronous wheel and the large synchronous wheel are installed with synchronous belts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting a rotating discharging mechanism, the output end of the driving motor drives the first spur gear to rotate, thereby driving the spur gear ring to drive the guide frame to rotate in a circle, so as to change the discharging position, thereby improving the utilization rate of the screen plate on the multi-stage screening machine, avoiding the accumulation of materials in one place to affect the efficiency of vibration screening, thereby improving the overall screening efficiency of the device;

[0015] 2. By setting up an intermittent discharge auxiliary device, the discharge port of the material guide frame can be opened intermittently, so that the material can be discharged to the multi-stage screening machine at equal intervals, so that the material will be further dispersed and evenly distributed on the screen surface. The effect of dispersing the material at equal intervals helps to improve the screening efficiency, reduce the problems of material blockage and uneven screening, and at the same time helps to increase the contact area between the material and the screen, improving the screening efficiency. At the same time, since the material is discharged intermittently, the screen will not be overloaded due to excessive material, thereby maintaining the stability and continuity of the screening;

[0016] 3. By setting up the replacement auxiliary parts, the material guide frame rotates continuously, so that the position of the material discharge port can be adjusted from the outermost circle to the innermost circle in sequence. When the sliding block moves horizontally to the maximum position, the reciprocating screw continues to rotate and drives the sliding block to gradually reset, so that the position of the material discharge port can be adjusted from the innermost circle to the outermost circle in sequence, thereby realizing the dynamic adjustment of the material discharge port position of the material guide frame, so that the material can be more evenly distributed on the screen surface. This dynamic discharge port position helps to reduce the accumulation of materials in a certain area and improve the efficiency of screening or subsequent processing processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the material guide sleeve of the present invention;

[0019] Figure 3 It is a cross-sectional view of the material guide frame of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 It is a schematic diagram of the bottom structure of the material guide frame of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 It is a schematic diagram of the structure of the intermittent discharge auxiliary device of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle;

[0025] Fig. 9 It is a schematic diagram of the connection between the power plate and the connecting ring of the present invention;

[0026] Fig.10 It is a schematic diagram of the inner structure of the second auxiliary seat of the present invention.

[0027] In the figure: 1, bracket; 2, lower hopper; 3, guide sleeve; 4, multi-stage screening machine; 5, connecting rod; 6, power ring; 7, guide frame; 8, spur gear ring; 9, fixed seat; 10, driving motor; 11, first spur gear; 12, power rod; 13, first auxiliary seat; 14, roller; 15, arched ramp; 16, baffle; 17, fixed rod; 18, arc-shaped bevel rack; 19, suspension seat; 20, rotating shaft; 21, bevel gear; 22, large synchronous wheel; 23, Synchronous belt; 24, connecting shaft; 25, small synchronous wheel; 26, connecting ring; 27, reciprocating screw; 28, power plate; 29, circular ring; 30, connecting spring; 31, sliding block; 32, power push rod; 33, second auxiliary seat; 34, third auxiliary seat; 35, guide block; 36, rotating block; 37, U-shaped rod; 38, fixed ring; 39, second spur gear; 40, spur rack; 41, rotating shaft; 42, torsion spring; 43, power spring; 44, sliding rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0030] Example 1

[0031] See also Figures 1 to 10 The present embodiment provides a multi-dispersed sand bed particle sorting device, comprising: a bracket 1 and a lower hopper 2 fixedly connected to the inner side of the bracket 1, a material guide sleeve 3 is fixedly connected to the lower material port of the lower hopper 2; a multi-stage screening machine 4, the multi-stage screening machine 4 is arranged below the material guide sleeve 3; a rotary discharging mechanism, located at the bottom of the material guide sleeve 3, for evenly dispersing the material on the multi-stage screening machine 4; a material guide frame 7, the material guide frame 7 is rotatably connected to the bottom of the material guide sleeve 3, and the interior of the material guide frame 7 is communicated with the material guide sleeve 3 discharge port, the rotary discharging mechanism comprises a spur gear ring 8 fixedly connected to the top of the material guide frame 7, and the spur gear ring 8 is rotatably connected to the material guide sleeve 3, one side of the material guide sleeve 3 is fixedly connected to a fixed seat 9, a driving motor 10 is installed below the fixed seat 9, and an output end of the driving motor 10 is fixedly connected to a first spur gear 11 meshing with the spur gear ring 8;

[0032] First of all, the multi-stage screening machine 4 can accommodate multiple screen layers inside the screen box, and each layer of the screen has a different aperture, which is used to classify materials of different particle sizes. The screen and the vibration device can be a vibration motor, and the spring shock absorption system can be connected between the screen box and the frame through the spring shock absorption system. When the external material conveyor transports the material to the lower hopper 2, the material falls into the multi-stage screening machine 4 through the guide sleeve 3 for vibration screening. When the material falls into the lower hopper 2, it is introduced into the guide frame 7 through the guide sleeve 3, and then discharged to the multi-stage screening machine 4 through the discharge port inside the guide frame 7. In this process, the drive motor 10 can be started, and the output end of the drive motor 10 drives the first spur gear 11 to rotate, thereby driving the spur gear ring 8 to drive the guide frame 7 to rotate in a circle, thereby changing the unloading position, thereby improving the utilization rate of the screen plate on the multi-stage screening machine 4, avoiding the accumulation of materials in one place to affect the efficiency of vibration screening, thereby improving the overall screening efficiency of the device.

[0033] Example 2

[0034] The intermittent discharging assistant is located at the discharging port of the guide frame 7 and is used for intermittently opening and closing the guide port of the guide frame 7. The intermittent discharging assistant includes three groups of third auxiliary seats 34 fixedly connected to the bottom of the guide frame 7. A rotating block 36 is arranged on the inner side of each group of the third auxiliary seats 34. One end of the rotating block 36 is fixedly connected to the baffle 16. The outer walls of both sides of the rotating block 36 are fixedly connected to a rotating shaft 41, and one end of the rotating shaft 41 passes through the outside of the third auxiliary seat 34 and is rotatably connected to the third auxiliary seat 34. One end of the rotating shaft 41 is fixedly connected to a fixing ring 38. A torsion spring 42 is installed between the fixing ring 38 and the third auxiliary seat 34. The intermittent discharging assistant also includes a sliding rod 44 slidably connected to the inner side of the third auxiliary seat 34, and one end of the sliding rod 44 passes through the outside of the third auxiliary seat 34 and is fixedly connected to a U-shaped rod 37. A power spring 43 is installed between the U-shaped rod 37 and the third auxiliary seat 34. Both ends of the U-shaped rod 37 are fixedly connected to a spur rack 40 , the outer wall of the fixed ring 38 is fixedly connected with a second spur gear 39 meshing with the spur rack 40, and a power assembly for reciprocatingly extruding the U-shaped rod 37 is arranged at the bottom of the guide frame 7, and the power assembly includes a first auxiliary seat 13 fixedly connected to the bottom of the guide frame 7, and the inner side of the first auxiliary seat 13 is slidably connected with a power rod 12, one end of the power rod 12 passes through the inner side of the first auxiliary seat 13 and is fixedly connected with a connecting ring 26, and a power plate 28 is arranged on one side of the connecting ring 26, and a power push rod 32 is fixedly connected to the top of the power plate 28, and the power assembly also includes a circular ring 29 fixedly connected to the outer wall of the power rod 12, and a connecting spring 30 is installed between the circular ring 29 and the first auxiliary seat 13, and the other end of the power rod 12 is rotatably connected with a roller 14, and a connecting rod 5 is fixedly connected to the bottom of the lower hopper 2, and a power ring 6 is fixedly connected to the bottom of the connecting rod 5, and a plurality of arched ramps 15 are fixedly connected to the inner side of the power ring 6, and a plurality of arched ramps 15 are distributed around the inner side of the power ring 6;

[0035] When the guide frame 7 rotates in a circle, it drives the power rod 12 to rotate synchronously. When the roller 14 moves from the lowest point to the highest point of the arched ramp 15, the power rod 12 is pushed by the arched ramp 15 to drive the power push rod 32 to move in the direction of the U-shaped rod 37 through the power plate 28, thereby pushing the spur rack 40 to drive the second spur gear 39 to drive the rotating shaft 41 to rotate, and then drive the rotating block 36 to drive the baffle 16 to rotate away from the discharge port of the guide frame 7, thereby opening the discharge port of the guide frame 7. When the roller 14 moves from the highest point to the lowest point of the arched ramp 15, the power rod 12 is automatically reset under the action of the connecting spring 30, so that the baffle 16 is reset under the action of the torsion spring 42, so that the discharge port of the guide frame 7 can be intermittently opened, so that the material discharged to the multi-stage screening machine 4 can be dispersed at equal intervals, so that the material will be further dispersed and evenly distributed on the screen surface. The effect of dispersing the material at equal intervals helps to improve screening efficiency, reduce material blockage and uneven screening problems, and helps to increase the contact area between the material and the screen, improving screening efficiency. At the same time, since the material is fed intermittently, the screen will not be overloaded due to excessive material, thereby maintaining the stability and continuity of the screening.

[0036] Example 3

[0037] The replacement auxiliary part is located at the bottom of the material guide frame 7 and is used to adjust the opening position of the material guide port of the material guide frame 7. The replacement auxiliary part includes a second auxiliary seat 33 fixedly connected to the bottom of the material guide frame 7. The inner side of the second auxiliary seat 33 is rotatably connected to the reciprocating screw rod 27. The outer wall of the reciprocating screw rod 27 is threadedly connected to a sliding block 31. The top of the sliding block 31 is slidably connected to a guide block 35. The top of the guide block 35 is fixedly connected to the power plate 28. One side of the power plate 28 is fixedly connected to a limiting block. The inner side of the connecting ring 26 is provided with a limiting groove matching the limiting block. The power plate 28 slides with the connecting ring 26 through a limiting block fixedly connected to one side. Dynamic connection, the replacement auxiliary part also includes a suspension seat 19 fixedly connected to the bottom of the guide frame 7, the inner side of the suspension seat 19 is rotatably connected with a swivel shaft 20, one end of the swivel shaft 20 is fixedly connected with a bevel gear 21, the inner side of the power ring 6 is fixedly connected with a fixed rod 17, one side of the fixed rod 17 is fixedly connected with an arc-shaped bevel rack 18 meshing with the bevel gear 21, the outer wall of the swivel shaft 20 is fixedly connected with a large synchronous wheel 22, one end of the reciprocating screw rod 27 is fixedly connected with a connecting shaft 24, and one end of the connecting shaft 24 passes through the outside of the second auxiliary seat 33 and is fixedly connected with a small synchronous wheel 25, and the outer wall of the small synchronous wheel 25 and the large synchronous wheel 22 is installed with a synchronous belt 23;

[0038] The inner side of the second auxiliary seat 33 is fixedly connected with a rectangular rod, and the inner side of the sliding block 31 is provided with a guide groove matching the rectangular rod. The sliding block 31 is slidably connected to the outer wall of the rectangular rod through the rectangular groove provided on the inner side. Three power push rods 32 are provided. When the guide frame 7 rotates nearly one circle, the bevel gear 21 contacts the helical teeth on the inner side of the arc-shaped bevel rack 18. At this time, the roller 14 is located between the two arched ramps 15, so that the power plate 28 does not move. When the guide frame 7 rotates in this process, the arc-shaped bevel rack 18 drives the bevel gear 21 to drive the rotating shaft 20 to rotate, thereby driving the synchronous belt 23 to rotate through the large synchronous wheel 22, and then driving the small synchronous wheel 25 to drive the reciprocating screw 27 to rotate quickly through the connecting shaft 24. When the bevel gear 21 is separated from the arc-shaped bevel rack 18, the sliding block 31 pushes the power plate 28 through the guide block 35 to drive the three power push rods 32 to move laterally. The power push rod 32 at the front end of the material guide frame 7 is moved away from the side of the U-shaped rod 37 set at the corresponding position, and the power push rod 32 in the middle is moved to the side of the U-shaped rod 37 at the corresponding position. When the material guide frame 7 rotates nearly one circle again, the power plate 28 moves again to move the power push rod 32 in the middle from the side of the U-shaped rod 37 set at the corresponding position, so that the power push rod 32 at the rear end is moved to the side of the U-shaped rod 37 set at the corresponding position, so that the material guide frame 7 is continuously rotated, so that the position of the material discharge port can be adjusted from the outermost circle position to the innermost circle in turn, and when the sliding block 31 moves horizontally to the maximum position, the reciprocating screw 27 continues to rotate and drives the sliding block 31 to gradually reset, so that the position of the material discharge port can be adjusted from the innermost circle position to the outermost circle in turn, thereby realizing the dynamic adjustment of the material discharge port position of the material guide frame 7, so that the material can be more evenly distributed on the screen surface. This dynamic discharge port position helps to reduce the accumulation of materials in a certain area and improve the efficiency of screening or subsequent processing processes.

[0039] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polydisperse sand bed particle sorting device, characterized in that: include: A bracket (1) and a material hopper (2) fixedly connected to the inner side of the bracket (1), wherein a material guide sleeve (3) is fixedly connected to the material discharge port of the material hopper (2); A multi-stage screening machine (4), wherein the multi-stage screening machine (4) is arranged below the material guiding sleeve (3); A rotary material discharging mechanism, located at the bottom of the material guiding sleeve (3), for evenly distributing the material on the multi-stage screening machine (4); A material guide frame (7), the material guide frame (7) is rotatably connected to the bottom of the material guide sleeve (3), and the interior of the material guide frame (7) is in communication with the material guide sleeve (3); An intermittent material discharge auxiliary device, located at the material guide opening of the material guide frame (7), and used for intermittently opening and closing the material guide opening of the material guide frame (7); The replacement auxiliary part is located at the bottom of the material guide frame (7) and is used to adjust the opening position of the material guide opening of the material guide frame (7).

2. A polydisperse sand bed particle sorting device according to claim 1, characterized in that: The rotary discharge mechanism comprises a spur gear ring (8) fixedly connected to the top of the material guide frame (7), and the spur gear ring (8) is rotatably connected to the material guide sleeve (3), a fixed seat (9) is fixedly connected to one side of the material guide sleeve (3), a drive motor (10) is installed below the fixed seat (9), and an output end of the drive motor (10) is fixedly connected to a first spur gear (11) meshing with the spur gear ring (8).

3. A polydisperse sand bed particle sorting device according to claim 1, characterized in that: The intermittent material discharging assistant comprises three groups of third auxiliary seats (34) fixedly connected to the bottom of the material guide frame (7), each group of the third auxiliary seats (34) is provided with two, a rotating block (36) is provided on the inner side of each group of the third auxiliary seats (34), and the two third auxiliary seats (34) are respectively located on one side of the rotating block (36), one end of the rotating block (36) is fixedly connected to a baffle (16), the outer walls on both sides of the rotating block (36) are fixedly connected to a rotating shaft (41), and one end of the rotating shaft (41) passes through the outside of the third auxiliary seat (34) and is rotatably connected to the third auxiliary seat (34), one end of the rotating shaft (41) is fixedly connected to a fixing ring (38), and a torsion spring (42) is installed between the fixing ring (38) and the third auxiliary seat (34).

4. A polydisperse sand bed particle sorting device according to claim 3, characterized in that: The intermittent discharge auxiliary device also includes a sliding rod (44) slidably connected to the inner side of the third auxiliary seat (34), and one end of the sliding rod (44) passes through the outside of the third auxiliary seat (34) and is fixedly connected to a U-shaped rod (37), a power spring (43) is installed between the U-shaped rod (37) and the third auxiliary seat (34), both ends of the U-shaped rod (37) are fixedly connected to a spur rack (40), the outer wall of the fixing ring (38) is fixedly connected to a second spur gear (39) meshing with the spur rack (40), and the bottom of the guide frame (7) is provided with a power component for reciprocatingly extruding the U-shaped rod (37).

5. A polydisperse sand bed particle sorting device according to claim 4, characterized in that: The power assembly comprises a first auxiliary seat (13) fixedly connected to the bottom of the material guide frame (7); a power rod (12) is slidably connected to the inner side of the first auxiliary seat (13); one end of the power rod (12) passes through the inner side of the first auxiliary seat (13) and is fixedly connected to a connecting ring (26); a power plate (28) is provided on one side of the connecting ring (26); and a power push rod (32) is fixedly connected to the top of the power plate (28).

6. A polydisperse sand bed particle sorting device according to claim 5, characterized in that: The power assembly also includes a circular ring (29) fixedly connected to the outer wall of the power rod (12), a connecting spring (30) is installed between the circular ring (29) and the first auxiliary seat (13), the other end of the power rod (12) is rotatably connected to a roller (14), the bottom of the lower hopper (2) is fixedly connected to a connecting rod (5), the bottom of the connecting rod (5) is fixedly connected to a power ring (6), the inner side of the power ring (6) is fixedly connected to a plurality of arched ramps (15), and the plurality of arched ramps (15) are distributed around the inner side of the power ring (6).

7. A polydisperse sand bed particle sorting device according to claim 6, characterized in that: The replacement auxiliary component comprises a second auxiliary seat (33) fixedly connected to the bottom of the material guide frame (7); a reciprocating screw (27) is rotatably connected to the inner side of the second auxiliary seat (33); a sliding block (31) is threadedly connected to the outer wall of the reciprocating screw (27); a guide block (35) is slidably connected to the top of the sliding block (31); the top of the guide block (35) is fixedly connected to the power plate (28); a limiting block is fixedly connected to one side of the power plate (28); a limiting groove matching the limiting block is provided on the inner side of the connecting ring (26); the power plate (28) is slidably connected to the connecting ring (26) via a limiting block fixedly connected to one side.

8. A polydisperse sand bed particle sorting device according to claim 7, characterized in that: The replacement auxiliary component also includes a suspension seat (19) fixedly connected to the bottom of the guide frame (7), the inner side of the suspension seat (19) is rotatably connected to a rotating shaft (20), one end of the rotating shaft (20) is fixedly connected to a bevel gear (21), the inner side of the power ring (6) is fixedly connected to a fixed rod (17), one side of the fixed rod (17) is fixedly connected to an arc-shaped bevel rack (18) meshing with the bevel gear (21), the outer wall of the rotating shaft (20) is fixedly connected to a large synchronous wheel (22), one end of the reciprocating screw rod (27) is fixedly connected to a connecting shaft (24), and one end of the connecting shaft (24) passes through the outside of the second auxiliary seat (33) and is fixedly connected to a small synchronous wheel (25), and a synchronous belt (23) is installed on the outer wall of the small synchronous wheel (25) and the large synchronous wheel (22).

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