Mine paste filling aggregate storage hopper inclined wall flow assisting device and flow assisting method

Abstract

The invention discloses an inclined wall flow assisting device and method for a mine paste filling aggregate storage hopper. The mine paste filling aggregate storage hopper inclined wall flow assisting device comprises a pin shaft A, a rotary rake arm, a range extending lug seat, a pin shaft B, a range extending connecting rod, a pin shaft C, a rectangular flange, a disc shell, a fixed rotating shaft, a rotary disc, a torque increasing connecting rod, a pin shaft E, a driving cylinder, a pin shaft D, an air cylinder lug seat and a rake arm lug seat. The problems that an existing flow aiding device is unstable in arch breaking effect, high in energy consumption and prone to failure are effectively solved.

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 aggregate hopper inclined wall flow-aiding device and a flow-aiding method. Background Art

[0002] Aggregates for mining paste filling include crushed gangue, crushed waste rock and other granular aggregates. The maximum particle size of aggregates is less than 15mm. The bottom of the storage hopper is an inclined wall structure. Aggregate particles are very easy to bite to form an arch bridge, resulting in 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 raw material composition and material level deadweight pressure, the arch bridge position and height are not fixed, and the fixed injection point is prone to misalignment and failure, affecting the smooth flow of downstream processes; 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 material vibration density; the cylinder piston rod telescopic movement along the axial single dimension breaks the arch, which 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 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 device and method for assisting the flow of an aggregate hopper with an inclined wall for filling a mine paste.

[0004] In order to achieve the above object, the technical solution provided by the present invention is: The inclined wall flow-aiding device for filling aggregate silo with mining paste comprises a rectangular flange (7) with an orifice, a rotary rake arm (2), a range-increasing connecting rod (5), a rotary disk (10), a torsion-increasing connecting rod (11), a driving cylinder (13) and two parallel disk shells (8); a rake arm ear seat (16) is provided at the upper front portion of the rectangular flange (7), and the rake arm ear seat (16) is hinged to the top of the rotary rake arm (2) through an A pin shaft (1); the disk shell (8) is arranged at the lower back portion of the rectangular flange (7), and the bottom edge of the disk shell (8) is welded to the orifice edge of the rectangular flange (7); the rotary disk (10) is arranged between the two disk shells (8); a fixed transmission shaft (9) is provided at the center of the rotary disk (10), and the two ends of the fixed transmission shaft (9) are respectively rotatably connected to the centers of the two disk shells (8) (a sealed bearing is provided at the center of the disk shell, which is in contact with the rotary disk and the fixed transmission shaft). Axis, a space gap is reserved between the two disc shells for the operation of the rotary disc); a range-extending ear seat (3) is provided at the middle of the back of the rotary rake arm (2); a concave ear hole is provided on the inner side of the edge of the rotary disc (10); the concave ear hole is hinged to one end of the range-extending connecting rod (5) through a C pin shaft (6); the other end of the range-extending connecting rod (5) is hinged to the range-extending ear seat (3) through a B pin shaft (4); a cylinder ear seat (15) is provided at the upper back of the rectangular flange (7); the top end of the driving cylinder (13) is hinged to the cylinder ear seat (15) through a D pin shaft (15); the execution end of the driving cylinder (13) is hinged to one end of the torsion-increasing connecting rod (11) through an E pin shaft (12); the other end of the torsion-increasing connecting rod (11) is fixedly connected to a fixed transmission shaft (9); the rotary rake arm (2) adopts a uniform cross-section long rod structure; the cross-sectional shape of the long rod includes a hexagonal shape, a flat rhombus shape or an elliptical shape.

[0005] Preferably, the disk housing (8) adopts a semicircular volute structure.

[0006] Preferably, the rotating disk (10) is a single-plate solid disk structure.

[0007] Preferably, the driving cylinder (13) is a telescopic cylinder or a rotating cylinder.

[0008] More preferably, the driving cylinder (13) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.

[0009] Preferably, the range-extending connecting rod (5) is a parallel double-plate structure with ear holes at both ends, and the shape of the range-extending connecting rod (5) is a curved shape or a straight shape.

[0010] Preferably, one end of the torsion-increasing link (11) 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 (11) is a curve shape or a straight line shape.

[0011] More preferably, the distance between the two ends of the torsion-increasing link (11) is greater than the radius of the rotating disk (10).

[0012] The flow-aiding method based on the above-mentioned mining paste filling aggregate hopper inclined wall flow-aiding device comprises the following steps: (1) Install the inclined wall flow-aiding device for aggregate hopper filled with mining paste on the inclined wall of the hopper, and make the inclined wall flow-aiding device for aggregate hopper filled with mining paste in the initial state: make the horizontal straight line passing through the center point of the C pin coincide with 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 30°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended. 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 30°. The fixed transmission shaft drives the rotary plate to rotate synchronously. 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. 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 30° 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 to the initial state position. (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 30° in the opposite direction based on step (3). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The fixed 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 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 30° 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.

[0013] 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 aggregate arch. Different aggregates form the arch foot foundation section at different positions on the inclined wall. The rotary rake arm of the flow-aiding device rotates and deflects the aggregate along the length direction of the inclined wall. The deflection 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 aggregate changes.

[0014] 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 aggregate at the lower end, it further activates the aggregate near the upper end, which is conducive to the continuous and stable flow of aggregate in the inclined wall section to the lower outlet.

[0015] 3. The rotary rake wall adopts a uniform cross-section strip structure, and a variety of flat cross-section shapes are selected. The length direction of the cross-section is parallel to the swing direction of the rotary rake wall, which is conducive to cutting aggregate bridge arches and has low energy consumption.

[0016] 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 according to the characteristics of the object and the size of the inclined wall of the bin, and has strong adaptability to the bin structure.

[0017] 5. The device is equipped with a torsion-increasing connecting rod, which can increase the torque and reduce the thrust of the driving cylinder by lengthening the torsion-increasing connecting rod, with low energy consumption.

[0018] 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.

[0019] 7. 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.

[0020] 8. The drive cylinder can adopt a telescopic drive cylinder to drive the transmission shaft together with the torsion-increasing connecting rod, or a rotary drive cylinder can be adopted to directly drive the transmission shaft, which is convenient for selection according to the material load characteristics to achieve low-consumption drive.

[0021] 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

[0022] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the state of step (2) and step (4) of the present invention; Figure 3 is a state schematic diagram of step (3) of the present invention; Figure 4 It is a schematic diagram of the selectable cross-sectional shapes of the rotary rake arm 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 of the present invention.

[0023] In the figure: 1. A pin; 2. rotary rake arm; 3. range-extending ear seat; 4. B pin; 5. range-extending connecting rod; 6. C pin; 7. rectangular flange; 8. disk housing; 9. fixed rotating shaft; 10. rotary disk; 11. torsion-increasing connecting rod; 12. E pin; 13. driving cylinder; 14. D pin; 15. cylinder ear seat; 16. rake arm ear seat. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0025] See also Figures 1 to 7 The inclined wall flow-aiding device for filling aggregate silo with mining paste comprises a rectangular flange (7) with an orifice, a rotary rake arm (2), a range-increasing connecting rod (5), a rotary disk (10), a torsion-increasing connecting rod (11), a driving cylinder (13) and two parallel disk shells (8); a rake arm ear seat (16) is provided at the upper front part of the rectangular flange (7), and the rake arm ear seat (16) is hinged to the top of the rotary rake arm (2) through an A pin shaft (1); the disk shell (8) is arranged at the lower back part of the rectangular flange (7), and the bottom edge of the disk shell (8) is welded to the orifice edge of the rectangular flange (7); the rotary disk (10) is arranged between the two disk shells (8), and a fixed transmission shaft (9) is provided at the center of the rotary disk (10), and the two ends of the fixed transmission shaft (9) are respectively rotatably connected to the center of the two disk shells (8). The middle part of the back of the rotary rake arm (2) is provided with a range-extending ear seat (3), the inner side of the edge of the rotary disk (10) is provided with a concave ear hole, the concave ear hole is hinged to one end of the range-extending connecting rod (5) through a C pin shaft (6), and the other end of the range-extending connecting rod (5) is hinged to the range-extending ear seat (3) through a B pin shaft (4); the upper part of the back of the rectangular flange (7) is provided with a cylinder ear seat (15), the top end of the driving cylinder (13) is hinged to the cylinder ear seat (15) through a D pin shaft (15), the execution end of the driving cylinder (13) is hinged to one end of the torsion-increasing connecting rod (11) through an E pin shaft (12), and the other end of the torsion-increasing connecting rod (11) is fixedly connected to a fixed transmission shaft (9); the rotary rake arm (2) adopts a uniform cross-section long rod structure, and the cross-sectional shape of the long rod includes a hexagonal shape, a flat rhombus shape or an elliptical shape.

[0026] The disk housing (8) adopts a semicircular volute structure. The rotating disk (10) is a single-plate solid disk structure.

[0027] Preferably, the drive cylinder (13) is a telescopic cylinder or a rotating cylinder. The drive cylinder (13) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder. The range-increasing connecting rod (5) is a parallel double-plate structure with ear holes at both ends, and the shape of the range-increasing connecting rod (5) is a curved or straight line. One end of the torsion-increasing connecting rod (11) 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 connecting rod (11) is a curved or straight line. The distance between the two ends of the torsion-increasing connecting rod (11) is greater than the radius of the turntable (10). Example 2

[0028] The flow-aiding method of the inclined wall flow-aiding device for filling aggregate hopper with mining paste according to Example 1 comprises the following steps: The flow-aiding method based on the above-mentioned mining paste filling aggregate hopper inclined wall flow-aiding device comprises the following steps: (1) Install the inclined wall flow-aiding device for aggregate hopper filled with mining paste on the inclined wall of the hopper, and make the inclined wall flow-aiding device for aggregate hopper filled with mining paste in the initial state: make the horizontal straight line passing through the center point of the C pin coincide with 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 30°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended. 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 30°. The fixed transmission shaft drives the rotary plate to rotate synchronously. 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. 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 30° 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 to the initial state position. (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 30° in the opposite direction based on step (3). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The fixed 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 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 30° 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 aggregate hoppers with inclined walls when filling with mining paste, characterized in that: The inclined wall flow-aiding device for filling aggregate silo with mining paste comprises a rectangular flange (7) with an orifice, a rotary rake arm (2), a range-increasing connecting rod (5), a rotary disk (10), a torsion-increasing connecting rod (11), a driving cylinder (13) and two parallel disk shells (8); a rake arm ear seat (16) is provided at the upper front portion of the rectangular flange (7), and the rake arm ear seat (16) is hinged to the top of the rotary rake arm (2) through an A pin shaft (1); the disk shell (8) is arranged at the lower back portion of the rectangular flange (7), and the bottom edge of the disk shell (8) is welded to the orifice edge of the rectangular flange (7); the rotary disk (10) is arranged between the two disk shells (8), and a fixed transmission shaft (9) is provided at the center of the rotary disk (10), and the two ends of the fixed transmission shaft (9) are respectively rotatably connected to the centers of the two disk shells (8); A range-extending ear seat (3) is provided at the middle of the back of the rotary rake arm (2); a concave ear hole is provided on the inner side of the edge of the rotary disk (10); the concave ear hole is hinged to one end of the range-extending connecting rod (5) through a C pin shaft (6); the other end of the range-extending connecting rod (5) is hinged to the range-extending ear seat (3) through a B pin shaft (4); a cylinder ear seat (15) is provided at the upper back of the rectangular flange (7); the top end of the drive cylinder (13) is hinged to the cylinder ear seat (15) through a D pin shaft (15); the actuating end of the drive cylinder (13) is hinged to one end of a torsion-increasing connecting rod (11) through an E pin shaft (12); the other end of the torsion-increasing connecting rod (11) is fixedly connected to a fixed transmission shaft (9); the rotary rake arm (2) adopts a uniform cross-section long rod structure; the cross-sectional shape of the long rod includes a hexagonal shape, a flat rhombus shape or an elliptical shape.

2. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 1, characterized in that: The disk housing (8) adopts a semicircular volute structure.

3. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 1, characterized in that: The rotating disk (10) is a single-plate solid disk structure.

4. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 1, characterized in that: The driving cylinder (13) is a telescopic cylinder or a rotating cylinder.

5. The inclined wall flow-aiding device for filling aggregate hopper with mining paste according to claim 4, characterized in that: The driving cylinder (13) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.

6. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 1, characterized in that: The range-extending connecting rod (5) is a parallel double-plate structure with ear holes at both ends, and the shape of the range-extending connecting rod (5) is a curved shape or a straight shape.

7. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 1, characterized in that: One end of the torsion-increasing connecting rod (11) 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 (11) is a curve shape or a straight line shape.

8. The inclined wall flow-aiding device for filling aggregate hopper with mining paste as claimed in claim 7, characterized in that: The distance between the two ends of the torsion-increasing connecting rod (11) is greater than the radius of the rotating disk (10).

9. A flow-aiding method based on the inclined wall flow-aiding device for filling aggregate hopper with mining paste according to any one of claims 1 to 8, characterized in that: The flow-aiding method comprises the following steps: (1) Install the inclined wall flow-aiding device for aggregate hopper filled with mining paste on the inclined wall of the hopper, and make the inclined wall flow-aiding device for aggregate hopper filled with mining paste in the initial state: make the horizontal straight line passing through the center point of the C pin coincide with 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 30°, and the piston rod of the drive cylinder is fully retracted; (2) The piston rod of the driving cylinder is extended. 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 30°. The fixed transmission shaft drives the rotary plate to rotate synchronously. 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. 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 30° 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 to the initial state position. (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 30° in the opposite direction based on step (3). The fixed transmission shaft drives the rotating plate to rotate in the opposite direction synchronously. The fixed 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 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 30° 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.

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