Mine paste filling powder bin hopper inclined wall flow aiding device and flow aiding method
By designing a mine paste filling powder silo bucket inclined wall flow aid device with rotary rake arms and rake teeth, the swing displacement and torque are adjusted by using the extended-range ear seat and the torque-increasing link, the position changes of the arch bridge of the traditional flow aid device are solved. As for the problem of high energy consumption, the continuous stable current and low energy consumption effect within the full length of the inclined wall of the warehouse has been achieved.
Patent Information
- Application Number
- CN202411302541.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional flow aid device of the inclined wall of the mine paste-filled powder silo has problems such as unfixed changes in the position and height of the arch bridge, instability of compressed air aggregation, high energy consumption of the vibration motor, and easy deformation of the cylinder piston rod, resulting in poor flow. a chronic disease.
A flow aid device including rectangular flange, rotary rake arm, extended-range connecting rod, rotary disc, torsion-increasing link and drive cylinder was designed. The material bridge arch was damaged through the rotary rake arm and rake tooth structure, and the extended-range ear was used. The seat and torsion-increasing link adjust the swing displacement and torque to achieve a flow accelerator with strong adaptability and low energy consumption.
It realizes continuous and stable flow aid within the full length of the inclined wall of the warehouse, reduces energy consumption, improves the adaptability and reliability of the device, avoids material flow jamming, and enhances the arch breaking effect.
Smart Images
Figure CN119240159A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of mine paste filling equipment, and in particular relates to a mine paste filling powder hopper inclined wall flow-aiding device and a flow-aiding method. Background Art
[0002] The powder materials for filling the paste in mines include fly ash, bulk cement, crushed gangue powder and other raw materials. The bottom of the storage hopper is an inclined wall structure, and there are raw material arch bridges and poor discharge. Traditional processes usually use compressed air injection, external vibration motor vibration, and oil cylinder telescopic tamping to break the arch and assist flow. Due to the large changes in the raw material composition and the deadweight pressure of the material level, the position and height of the arch bridge are not fixed, and the fixed injection point is prone to misalignment and failure. The compressed air in the hopper accumulates and becomes unstable, causing the powder to suddenly gush out, affecting the smooth flow of the downstream process; the arch breaking effect of the external vibration motor method is greatly affected by the thickness of the wall material, and there are high energy consumption, fatigue damage to the hopper wall material, and dense vibration of the material; the cylinder piston rod telescopic movement along the axial one-dimensional arch breaking cannot adapt to the changes in the position and height of the arch bridge. The piston rod is too long and is easily affected by the material pressure and scouring deformation and instability, and requires an additional power source. The arch bridge of the hopper material has become a stubborn problem of poor material flow. Summary of the invention
[0003] The present invention aims to overcome the deficiencies of the prior art and provides a flow-aiding device and a flow-aiding method for a mine paste filling powder hopper inclined wall.
[0004] In order to achieve the above object, the technical solution provided by the present invention is: The mining paste filling powder silo hopper inclined wall flow-aiding device comprises a rectangular flange (8) with an orifice, a rotary rake arm (2), a range-increasing connecting rod (5), a rotary disk (11), a torsion-increasing connecting rod (12), a driving cylinder (14) and two parallel plate shells (9); a rake arm ear seat (17) is provided on the upper front part of the rectangular flange (8), and the rake arm ear seat (17) is hinged to the top end of the rotary rake arm (2) through an A pin shaft (1); the plate shell (9) is arranged on the rectangular flange (8) ) on the lower back side, and the bottom edge of the disk shell (9) is welded to the edge of the hole of the rectangular flange (8), the rotating disk (11) is arranged between the two disk shells (9), the center of the rotating disk (11) is provided with a fixed transmission shaft (10), and the two ends of the fixed transmission shaft (10) are respectively rotatably connected with the centers of the two disk shells (9) (a sealed bearing is provided at the center of the disk shell, which is coaxial with the rotating disk and the fixed transmission shaft, and a space gap is left between the two disk shells for the rotating disk to operate); the rotating disk (11) is provided with a fixed transmission shaft (10) at the center of the rotating disk (11), and the two ends of the fixed transmission shaft (10) are respectively rotatably connected with the centers of the two disk shells (9) (a sealed bearing is provided at the center of the disk shell, which is coaxial with the rotating disk and the fixed transmission shaft, and a space gap is left between the two disk shells for the rotating disk to operate); An extended-range ear seat (3) is provided at the middle of the front of the rake arm (2); a protruding ear hole is provided at the outer side of the edge of the rotary disk (11); the protruding ear hole is hinged to one end of the extended-range connecting rod (5) through a C pin shaft (6); the other end of the extended-range connecting rod (5) is hinged to the extended-range ear seat (3) through a B pin shaft (4); a cylinder ear seat (16) is provided at the upper back of the rectangular flange (8); the top end of the driving cylinder (14) is hinged to the cylinder ear seat (16) through a D pin shaft (15); The driving cylinder (14) is hinged at an execution end with one end of a torsion-increasing link (12) via an E pin shaft (13), and the other end of the torsion-increasing link (12) is fixedly connected to a fixed transmission shaft (10); the rotary rake arm (2) is provided with rake teeth (7); the rotary rake arm (2) adopts a rectangular long parallel double plate structure, the parallel double plates are provided with rake tooth mounting holes, the rake teeth (7) are mounted in the rake tooth mounting holes, and the length of the rake teeth (7) is greater than the spacing between the parallel double plates.
[0005] Preferably, the disk housing (9) adopts a semicircular volute structure.
[0006] Preferably, the rotating disk (11) is a single-plate solid disk structure.
[0007] Preferably, the driving cylinder (14) is a telescopic cylinder or a rotating cylinder.
[0008] More preferably, the driving cylinder (14) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.
[0009] Preferably, one end of the range-extending connecting rod (5) is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure, and the shape of the range-extending connecting rod (5) is a curved shape or a straight shape.
[0010] More preferably, the distance between the two ends of the range-extending connecting rod (5) is greater than the vertical distance from the top of the range-extending ear seat (3) to the back side of the rotary rake arm (2).
[0011] Preferably, one end of the torsion-increasing link (12) is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure, and the shape of the torsion-increasing link (12) is a curve shape or a straight line shape.
[0012] More preferably, the distance between the two ends of the torsion-increasing link (12) is greater than the radius of the rotating disk (11).
[0013] The flow-aiding method based on the above-mentioned mining paste filling powder hopper inclined wall flow-aiding device comprises the following steps: (1) Install the inclined wall flow-aiding device for filling powder silo with mining paste on the inclined wall of the silo, so that the inclined wall flow-aiding device for filling powder silo with mining paste is in the initial state: the length direction of the rotary rake arm is parallel to the length direction of the rectangular flange plane; the horizontal straight line passing through the center point of the C pin is below the horizontal straight line passing through the center point of the fixed transmission shaft, the acute angle between the B pin, the C pin and the fixed transmission shaft is 45°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended, and the end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45 degrees. The fixed transmission shaft drives the rotary plate to rotate synchronously, and the rotary plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft, and the rotary rake arm swings outward to the maximum angle; (3) The piston rod of the driving cylinder is extended to the maximum extension length. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to continue to rotate 45° on the basis of step (2). The fixed transmission shaft drives the rotating plate to rotate synchronously. The rotating plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate in the opposite direction around the A pin shaft through the B pin shaft. The rotary rake arm swings in the opposite direction until it is parallel to the rectangular flange plane. (4) The driving cylinder retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (3). The fixed transmission shaft drives the rotary plate to rotate in the opposite direction synchronously. The fixed rotary plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft. The rotary rake arm swings outward to the maximum angle. (5) The driving cylinder completely retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (4). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The rotating plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotating rake arm to rotate around the A pin shaft through the B pin shaft. The rotating rake arm swings in the opposite direction until it is parallel to the rectangular flange plane and returns to the initial state of step (1). (6) Repeat steps (1) to (5), and the rotary rake wall swings repeatedly to destroy the material bridge arch, thereby achieving continuous flow assistance.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The inclined wall of the hopper is the arch foot foundation section of the material. Different materials form the arch foot foundation section at different positions on the inclined wall. The rotary rake arm of the flow-aiding device rotates and twists the material along the length direction of the inclined wall. The twisting range covers the arch angle foundation section, which can achieve arch breaking and flow-aiding within the entire length of the hopper inclined wall, and has strong adaptability to material changes.
[0015] 2. The rotation center of the rotary rake arm is located at the upper end, and the swing displacement of the lower end is greater than that of the upper end. While destroying the compacted material at the lower end, it further activates the material near the upper end, which is conducive to the continuous and stable flow of the material in the inclined wall section to the lower outlet.
[0016] 3. The rotary harrow wall adopts a rectangular long thin plate structure. The thin plate plane is parallel to the direction of the rotary harrow wall, which is conducive to cutting the powder bridge arch and has low energy consumption.
[0017] 4. The device is equipped with a range-extending ear seat and a range-extending connecting rod, which can be configured to adjust the swing displacement of the lower end of the rotary rake arm 2 according to the material characteristics and the size of the inclined wall of the bin, and has strong adaptability to the bin structure.
[0018] 5. The device is provided with a torsion-increasing connecting rod, which can increase the torque and reduce the thrust of the driving cylinder 14 by lengthening the torsion-increasing connecting rod, and has low energy consumption.
[0019] 6. The device is equipped with a rotating disc. The gap between the rotating disc and the disc shell remains unchanged during the rotation process, which prevents the incremental material from entering the gap space and causing jamming, and has high reliability.
[0020] 7. The rotary rake arm is equipped with rake teeth, which expands the contact range with the material and has a good arch-breaking and flow-aiding effect.
[0021] 8. The stroke of the drive cylinder can be adjusted to change the rotation angle of the turntable. One movement of the drive cylinder can achieve the adjustment function of swinging the rotary rake arm once or twice.
[0022] 9. The drive cylinder can adopt a telescopic drive cylinder to drive the fixed transmission shaft together with the torsion-increasing connecting rod, or a rotary drive cylinder can be used to directly drive the fixed transmission shaft, which is convenient for selection according to the material load characteristics to achieve low-consumption drive.
[0023] In summary, the present invention effectively solves the problems of unstable arch-breaking effect, high energy consumption and easy failure of existing flow-aiding devices. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2It is a schematic diagram of the states of step (2) and step (4) in the method of the present invention; Figure 3 is a state schematic diagram of step (3) in the method of the present invention; Figure 4 It is a schematic diagram of the structure of the rotary rake arm and rake teeth in the present invention; Figure 5 It is a schematic diagram of the structure of the rotary disk in the present invention; Figure 6 is a cross-sectional schematic diagram of the range-extending connecting rod in the present invention; Figure 7 It is a cross-sectional schematic diagram of the torsion-increasing connecting rod in the present invention.
[0025] In the figure: 1. A pin; 2. rotary rake arm; 3. range-increasing ear seat; 4. B pin; 5. range-increasing connecting rod; 6. C pin; 7. rake teeth; 8. rectangular flange; 9. disk shell; 10. fixed rotating shaft; 11. rotary disk; 12. torsion-increasing connecting rod; 13. E pin; 14. driving cylinder; 15. D pin; 16. cylinder ear seat; 17. rake arm ear seat. DETAILED DESCRIPTION
[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1
[0027] See also Figures 1 to 7The inclined wall flow-aiding device for filling powder silo with mining paste comprises a rectangular flange 8 with an orifice, a rotary rake arm 2, a range-increasing connecting rod 5, a rotary disk 11, a torsion-increasing connecting rod 12, a driving cylinder 14 and two parallel disk shells 9; a rake arm ear seat 17 is provided on the upper front part of the rectangular flange 8, and the rake arm ear seat 17 is hinged to the top of the rotary rake arm 2 through the A pin 1; the disk shell 9 is arranged at the lower back part of the rectangular flange 8, and the bottom edge of the disk shell 9 is welded to the orifice edge of the rectangular flange 8, and the rotary disk 11 is arranged between the two disk shells 9, and a fixed transmission shaft 10 is provided at the center of the rotary disk 11, and the two ends of the fixed transmission shaft 10 are respectively rotatably connected to the center of the two disk shells 9; A range-extending ear seat 3 is provided in the middle of the front of the rotary rake arm 2, and a protruding ear hole is provided on the outer side of the edge of the rotary disk 11, and the protruding ear hole is hinged to one end of the range-extending connecting rod 5 through the C pin 6, and the other end of the range-extending connecting rod 5 is hinged to the range-extending ear seat 3 through the B pin 4; a cylinder ear seat 16 is provided on the upper back of the rectangular flange 8, and the top end of the drive cylinder 14 is hinged to the cylinder ear seat 16 through the D pin 15, and the execution end of the drive cylinder 14 is hinged to one end of the torsion-increasing connecting rod 12 through the E pin 13, and the other end of the torsion-increasing connecting rod 12 is fixedly connected to the fixed transmission shaft 10; rake teeth 7 are provided on the rotary rake arm 2; the rotary rake arm 2 adopts a rectangular long parallel double-plate structure, and the parallel double plates are provided with rake tooth mounting holes, and the rake teeth 7 are installed in the rake tooth mounting holes, and the length of the rake teeth 7 is greater than the spacing between the parallel double plates.
[0028] Among them, the disk shell 9 adopts a semicircular volute structure. The rotating disk 11 is a single-plate solid disk structure. The driving cylinder 14 is a telescopic cylinder or a rotating cylinder. The driving cylinder 14 is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder. One end of the range-extending connecting rod 5 is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure. The shape of the range-extending connecting rod 5 is curved or straight. The distance between the two ends of the range-extending connecting rod 5 is greater than the vertical distance from the top of the range-extending ear seat 3 to the back side of the rotating rake arm 2. One end of the torsion-increasing connecting rod 12 is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure. The shape of the torsion-increasing connecting rod 12 is curved or straight. The distance between the two ends of the torsion-increasing connecting rod 12 is greater than the radius of the rotating disk 11. Example 2
[0029] The flow-aiding method of the inclined wall flow-aiding device for filling the powder hopper of the mine paste described in Example 1 comprises the following steps: (1) The inclined wall flow-aiding device for filling powder silo of mining paste is installed on the inclined wall of the silo, so that the inclined wall flow-aiding device for filling powder silo of mining paste is in the initial state: the length direction of the rotary rake arm is parallel to the length direction of the rectangular flange plane; the horizontal straight line passing through the center point of the C pin is located below the horizontal straight line passing through the center point of the transmission shaft, the acute angle between the B pin, the C pin and the transmission shaft 10 is 45°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended, and the end of the piston rod pushes the torsion increasing connecting rod through the E pin shaft to drive the fixed transmission shaft 1 to rotate 45°. The fixed transmission shaft drives the rotary plate to rotate synchronously, and the rotary plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range-extending connecting rod to move. The range-extending connecting rod drives the range-extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft, and the rotary rake arm swings outward to the maximum angle; (3) The piston rod of the driving cylinder is extended to the maximum extension length. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to continue to rotate 45° on the basis of step (2). The fixed transmission shaft drives the rotating plate to rotate synchronously. The rotating plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate in the opposite direction around the A pin shaft through the B pin shaft. The rotary rake arm swings in the opposite direction until it is parallel to the rectangular flange plane. (4) The driving cylinder retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (3). The fixed transmission shaft drives the rotary plate to rotate in the opposite direction synchronously. The fixed rotary plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft. The rotary rake arm swings outward to the maximum angle. (5) The driving cylinder completely retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (4). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The rotating plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotating rake arm to rotate around the A pin shaft through the B pin shaft. The rotating rake arm swings in the opposite direction until it is parallel to the rectangular flange plane and returns to the initial state of step (1). (6) Repeat steps (1) to (5), and the rotary rake wall swings repeatedly to destroy the material bridge arch, thereby achieving continuous flow assistance.
Claims
1. A device for assisting the flow of a silo hopper with an inclined wall for filling powder with a mining paste, characterized in that: The mining paste filling powder silo hopper inclined wall flow-aiding device comprises a rectangular flange (8) with an orifice, a rotary rake arm (2), a range-increasing connecting rod (5), a rotary disk (11), a torsion-increasing connecting rod (12), a driving cylinder (14) and two parallel disk shells (9); a rake arm ear seat (17) is provided at the upper front portion of the rectangular flange (8), and the rake arm ear seat (17) is hinged to the top of the rotary rake arm (2) through an A pin shaft (1); the disk shell (9) is arranged at the lower back portion of the rectangular flange (8), and the bottom edge of the disk shell (9) is welded to the orifice edge of the rectangular flange (8); the rotary disk (11) is arranged between the two disk shells (9), and a fixed transmission shaft (10) is provided at the center of the rotary disk (11), and the two ends of the fixed transmission shaft (10) are respectively rotatably connected to the centers of the two disk shells (9); A range-extending ear seat (3) is provided at the middle of the front of the rotary rake arm (2); a protruding ear hole is provided at the outer side of the edge of the rotary disk (11); the protruding ear hole is hinged to one end of the range-extending connecting rod (5) via a C pin shaft (6); the other end of the range-extending connecting rod (5) is hinged to the range-extending ear seat (3) via a B pin shaft (4); a cylinder ear seat (16) is provided at the upper back of the rectangular flange (8); the top end of the driving cylinder (14) is hinged to the cylinder ear seat (16) via a D pin shaft (15) The driving cylinder (14) has an actuating end hinged to one end of a torsion-increasing link (12) via an E-pin shaft (13), and the other end of the torsion-increasing link (12) is fixedly connected to a fixed transmission shaft (10); the rotary rake arm (2) is provided with rake teeth (7); the rotary rake arm (2) adopts a rectangular long parallel double plate structure, the parallel double plates are provided with rake tooth mounting holes, the rake teeth (7) are mounted in the rake tooth mounting holes, and the length of the rake teeth (7) is greater than the spacing between the parallel double plates.
2. The inclined wall flow-aiding device for filling powder silo with mining paste as claimed in claim 1, characterized in that: The disk housing (9) adopts a semicircular volute structure.
3. The inclined wall flow-aiding device for filling powder silo with mining paste as claimed in claim 1, characterized in that: The rotating disk (11) is a single-plate solid disk structure.
4. The inclined wall flow-aiding device for filling powder hopper of mining paste as claimed in claim 1, characterized in that: The driving cylinder (14) is a telescopic cylinder or a rotating cylinder.
5. The inclined wall flow-aiding device for filling powder hopper of mining paste according to claim 4, characterized in that: The driving cylinder (14) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.
6. The inclined wall flow-aiding device for filling powder hopper of mining paste as claimed in claim 1, characterized in that: One end of the range-extending connecting rod (5) is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure. The shape of the range-extending connecting rod (5) is a curve shape or a straight line shape.
7. The inclined wall flow-aiding device for filling powder hopper of mining paste as claimed in claim 6, characterized in that: The distance between the two ends of the range-extending connecting rod (5) is greater than the vertical distance from the top of the range-extending ear seat (3) to the back side of the rotary rake arm (2).
8. The inclined wall flow-aiding device for filling powder hopper of mining paste as claimed in claim 1, characterized in that: One end of the torsion-increasing connecting rod (12) is a U-shaped tuning fork double-ear structure, and the other end is a single-hole ear handle structure. The shape of the torsion-increasing connecting rod (12) is a curve shape or a straight line shape.
9. The inclined wall flow-aiding device for filling powder silo with mining paste as claimed in claim 8, characterized in that: The distance between the two ends of the torsion-increasing connecting rod (12) is greater than the radius of the rotating disk (11).
10. A flow-aiding method based on the inclined wall flow-aiding device for filling powder silo with mining paste according to any one of claims 1 to 9, characterized in that: The flow-aiding method comprises the following steps: (1) The inclined wall flow-aiding device for filling powder silo of mining paste is installed on the inclined wall of the silo, so that the inclined wall flow-aiding device for filling powder silo of mining paste is in the initial state: the length direction of the rotary rake arm is parallel to the length direction of the rectangular flange plane; the horizontal straight line passing through the center point of the C pin is located below the horizontal straight line passing through the center point of the transmission shaft, the acute angle between the B pin, the C pin and the transmission shaft 10 is 45°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended, and the end of the piston rod pushes the torsion increasing connecting rod through the E pin shaft to drive the fixed transmission shaft 1 to rotate 45°. The fixed transmission shaft drives the rotary plate to rotate synchronously, and the rotary plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range-extending connecting rod to move. The range-extending connecting rod drives the range-extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft, and the rotary rake arm swings outward to the maximum angle; (3) The piston rod of the driving cylinder is extended to the maximum extension length. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to continue to rotate 45° on the basis of step (2). The fixed transmission shaft drives the rotating plate to rotate synchronously. The rotating plate drives the C pin shaft to rotate synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate in the opposite direction around the A pin shaft through the B pin shaft. The rotary rake arm swings in the opposite direction until it is parallel to the rectangular flange plane. (4) The driving cylinder retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (3). The fixed transmission shaft drives the rotary plate to rotate in the opposite direction synchronously. The fixed rotary plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotary rake arm to rotate around the A pin shaft through the B pin shaft. The rotary rake arm swings outward to the maximum angle. (5) The driving cylinder completely retracts the piston rod. The end of the piston rod pushes the torque increasing connecting rod through the E pin shaft to drive the fixed transmission shaft to rotate 45° in the opposite direction based on step (4). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The rotating plate drives the C pin shaft to rotate in the opposite direction synchronously. The C pin shaft drives the range extending connecting rod to move. The range extending connecting rod drives the range extending ear seat and the rotating rake arm to rotate around the A pin shaft through the B pin shaft. The rotating rake arm swings in the opposite direction until it is parallel to the rectangular flange plane and returns to the initial state of step (1). (6) Repeat steps (1) to (5), and the rotary rake wall swings repeatedly to destroy the material bridge arch, thereby achieving continuous flow assistance.