Mine paste filling powder batching device and method

Abstract

The invention discloses a mine paste filling powder batching device and method. The mine paste filling powder batching device comprises a silo, a silo top cover is arranged at the top of the silo, a dust remover and a safety valve are arranged on the silo top cover, a feeding port is formed in the upper portion of the silo and connected with a feeding pipe, and the bottom end of the silo is connected with an upper port of a silo cone; a lower port of the bin cone is connected with one end of a feeding pipe through a pneumatic butterfly valve A and a tubular flexible connector A, the other end of the feeding pipe is connected with a hopper top cover of a hopper barrel, the bottom end of the hopper barrel is connected with an upper port of a hopper cone, and a lower port of the hopper cone is connected with a feeding port of a spiral conveyor through a pneumatic butterfly valve B and a tubular flexible connector B; one end of the breathing pipe is connected with the side face of the feeding pipe, and the other end of the breathing pipe is connected with the hole opening of the hopper top cover; and a plurality of flow aiding devices are arranged on the cone wall of the bin cone and / or the cone wall of the hopper cone.

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 batching device and method. Background Art

[0002] The mixing and batching process of paste filling in mines includes two methods: intermittent batching and continuous batching. Intermittent batching requires large instantaneous capacity of the equipment, long-term no-load operation, and high energy consumption of the system configuration; continuous batching has large cumulative errors, delayed correction response, easy imbalance of proportions, and distorted material consumption management. Both process methods use silos to store powder materials and use screw conveyors at the bottom of the silo to discharge materials. The self-weight discharge of the silo mouth and the discharge capacity of the screw conveyor do not match, and the discharge of the silo mouth cannot maintain a steady state, causing arch bridges of materials in the silo, impact of falling materials, imbalance of system proportions, and downstream dust pollution. In addition, different batching processes use different equipment, resulting in a wide variety of mine filling equipment, and difficulties in process selection and equipment maintenance. Mine filling urgently needs a universal device that can be used for both intermittent batching and continuous batching. Summary of the invention

[0003] The present invention aims to overcome the deficiencies of the prior art and provides a device and method for batching powder for filling a mine paste.

[0004] In order to achieve the above object, the technical solution provided by the present invention is: The mining paste filling powder batching device comprises a silo (5), the top of the silo (5) is provided with a silo cover (1), the silo cover (1) is provided with a dust collector (2) and a safety valve (3), the upper part of the silo (5) is provided with a feed port, the feed port is connected to a feed pipe (4), the bottom end of the silo (5) is connected to an upper port of a silo cone (6); the lower port of the silo cone (6) is connected to one end of a feed pipe (14) via an A pneumatic butterfly valve (12) and an A tubular flexible connection (13), and the other end of the feed pipe (14) is connected to a bucket (20). The bottom end of the bucket barrel (20) is connected to the upper end of the bucket cone (18), and the lower end of the bucket cone (18) is connected to the feed port of the screw conveyor (23) via a B pneumatic butterfly valve (21) and a B tubular flexible connection (22); the mining paste filling powder batching device also includes a breathing tube (10), one end of the breathing tube (10) is connected to the side of the feeding tube (4), and the other end is connected to the orifice of the bucket top cover (19); a plurality of flow-aiding devices are provided on the cone wall of the bin cone (16) and / or the cone wall of the bucket cone (18).

[0005] Preferably, the mining paste filling powder batching device further comprises a bin support leg (24) arranged around the side wall of the bottom end of the bin tube (5); a ring beam (17) is arranged around the upper outer portion of the outer side of the bucket tube (20), and the outer side surface of the ring beam (17) is connected to the bin support leg (24); an ear seat (15) is arranged on the outer side of the bucket tube (20) (distributed at an angle of 120° along the bucket tube), and a weighing sensor (16) is connected to the lower surface of the ear seat (15), and the weighing sensor (16) is also connected to the upper surface of the ring beam (17).

[0006] Preferably, the middle part of the feeding pipe (4) is connected in series with a pneumatic ball valve A (8), one end of the breathing tube (10) is connected to a position on the feeding pipe (4) above the pneumatic ball valve A (8), and the middle part of the breathing tube (10) is connected in series with a pneumatic ball valve B (9) and a tubular flexible connection C (11).

[0007] Preferably, the flow-aiding device (7) comprises a rectangular flange (30) with an orifice, a rotary rake arm (31), a range-increasing connecting rod (32), a rotary disk (33), a torsion-increasing connecting rod (34), a driving cylinder (35) and two parallel disk shells (36); a rake arm ear seat (37) is provided at the upper front portion of the rectangular flange (30), and the rake arm ear seat (37) is hinged to the top of the rotary rake arm (31) via an A pin (38); the disk shell (36) is arranged at the lower back portion of the rectangular flange (30), and the bottom edge of the disk shell (36) is welded to the edge of the orifice of the rectangular flange (30); the rotary disk (33) is arranged between the two disk shells (36), and a fixed transmission shaft (39) is provided at the center of the rotary disk (33), and the two ends of the fixed transmission shaft (39) are respectively rotatably connected to the centers of the two disk shells (36); A range-extending ear seat (40) is provided at the middle of the front of the rotary rake arm (31); a protruding ear hole is provided on the outer side of the edge of the rotary disk (33); the protruding ear hole is hinged to one end of the range-extending connecting rod (32) via a C pin shaft (41); the other end of the range-extending connecting rod (32) is hinged to the range-extending ear seat (40) via a B pin shaft (42); a cylinder ear seat (26) is provided at the upper back of the rectangular flange (30); the top end of the drive cylinder (35) is hinged to the cylinder ear seat (26) via a D pin shaft (27); the actuating end of the drive cylinder (35) is hinged to one end of a torsion-increasing connecting rod (34) via an E pin shaft (28); the other end of the torsion-increasing connecting rod (34) is fixedly connected to a fixed transmission shaft (39); a rake tooth (29) is provided on the rotary rake arm (31); the rotary rake arm (31) adopts a rectangular long parallel double plate structure; The parallel double plates are provided with rake tooth mounting holes, the rake teeth (29) are mounted in the rake tooth mounting holes, and the length of the rake teeth (29) is greater than the spacing between the parallel double plates; the rectangular flange (30) is mounted on the outer side of the cone wall of the bin cone (6) and the outer side of the cone wall of the bucket cone (18), and the rotary rake arm (31) is in the inner cavity of the bin cone (6) or the bucket cone (18); the upper part of the inner cavity of the bin cone (6) is provided with an isolation plate welded to the inner wall of the bin cone (6) or the bucket cone (18), the isolation plate divides the inner cavity of the bin cone (6) or the bucket cone (18) into four equal areas, and the multiple flow-aiding devices (7) are evenly distributed in the four equal areas; the top edge of the isolation plate is flush with the top edge of the bin cone (6) or the bucket cone (18), and the bottom edge of the isolation plate is parallel to the bottom edge of the bin cone (6) or the bucket cone (18); the bottom end of the rotary rake arm (31) is lower than the bottom edge of the isolation plate.

[0008] More preferably, the bin cone (6) and the bucket cone (18) are each provided with four flow-aiding devices (7), and the flow-aiding devices (7) are arranged at intervals of 90° along the cone wall of the bin cone (6) or the cone wall of the bucket cone (18).

[0009] More preferably, the angle between the center line of the flow-aiding device (7) and the plane where the adjacent isolation plate is located is 45°.

[0010] More preferably, the isolation plate comprises an isosceles trapezoidal plate and two right-angled trapezoidal plates, the waistline of the isosceles trapezoidal plate is welded to the inner wall of the bin cone (6) or the bucket cone (18), the oblique waistline of the right-angled trapezoidal plate is welded to the inner wall of the bin cone (6) or the bucket cone (18), the vertical waistline of the right-angled trapezoidal plate is welded to the isosceles trapezoidal plate, and the two right-angled trapezoidal plates are in the same plane and perpendicular to the isosceles trapezoidal plate; a pressure box (25) is provided at the intersection of the top edges of the isosceles trapezoidal plate and the right-angled trapezoidal plate in the bin cone (6).

[0011] Preferably, the disk housing (36) adopts a semicircular volute structure; the rotary disk (36) is a single-plate solid disk structure; and the driving cylinder (35) is a telescopic cylinder or a rotating cylinder.

[0012] More preferably, the driving cylinder (35) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.

[0013] Preferably, one end of the range-increasing connecting rod (32) 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-increasing connecting rod (32) is a curved line or a straight line; the distance between the two ends of the range-increasing connecting rod (32) is greater than the vertical distance from the top of the range-increasing ear seat (40) to the back side of the rotating rake arm (31); one end of the torsion-increasing connecting rod (34) 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 (34) is a curved line or a straight line; the distance between the two ends of the torsion-increasing connecting rod (34) is greater than the radius of the rotating disk (33).

[0014] Preferably, the feed pipe 14 is a straight pipe of equal diameter, and its diameter is larger than the caliber of the pneumatic butterfly valve 12; The screw conveyor 23 is driven by a variable frequency motor, and the feed diameter is larger than the diameter of the pneumatic butterfly valve 21; The tubular flexible connection 13 has a gradually changing diameter, the small diameter end is equal to and connected to the pneumatic butterfly valve A 12, and the large diameter end is equal to and connected to the feed pipe 14; The tubular flexible connection 22 has a gradually changing diameter, the small diameter end is equal to and connected to the diameter of the pneumatic butterfly valve B 21, and the large diameter end is equal to and connected to the feed port of the screw conveyor 23; The C-shaped flexible connection 11 is an equal-diameter body, and has the same diameter as the pneumatic ball valve 9 and the breathing tube 10; The pneumatic ball valve A 8 has the same diameter as the feeding pipe 4; The dust collector 2 is driven by a variable frequency fan.

[0015] The batching method based on the above-mentioned mining paste filling powder batching device includes an intermittent batching method based on a single set of mining paste filling powder batching device and a continuous batching method based on two sets of mining paste filling powder batching devices;

[0016] (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve 8 into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve, the A pneumatic butterfly valve 12, and open the flow-aiding device on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe 14 to enter the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper enters the silo barrel through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feeding pipe, and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: the batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve 21 and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feeding pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value; (4): Repeat steps (1) and (2) to achieve intermittent batching.

[0017] (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve and the A pneumatic butterfly valve, and open the flow-aiding device located on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe into the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper passes through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feed pipe into the silo barrel and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: The batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feed pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time and calculates the real-time discharge capacity, and by correcting the operating frequency of the drive motor of the screw conveyor in real time, the discharge capacity reaches the set batching capacity and remains stable. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value. The actual discharge weight value compared with the actual discharge time is the average discharge capacity; (4): When the first batching device finishes step (3), the second batching device starts to synchronously execute step (3). The first batching device executes steps (1) and (2), and the second batching device executes steps (1) and (2) when step (3) is finished. The two batching devices cross-cycle to achieve continuous batching.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The same batching device can be used as a single set to achieve intermittent batching of powder materials, and can be used as two sets to achieve continuous batching, thus realizing the universalization of batching devices for different process requirements and eliminating the disadvantages of difficult mine filling process selection and equipment management.

[0019] 2. There is a hopper at the bottom of the silo, which has the following benefits: (1) The material hopper is fed from the silo to the hopper by mouth-to-mouth unobstructed self-weight feeding, which is conducive to maintaining the steady state of the initial discharge of the silo, giving full play to the discharge capacity of the silo, and eliminating the problem that the traditional screw machine does not match the discharge capacity of the silo, the screw machine hinders the discharge of the silo, causes the secondary arch bridge of the silo, and destroys the steady-state discharge.

[0020] (2) The volume of the hopper is much smaller than that of the silo, and the weight pressure of the powder in the hopper is also much smaller than the weight pressure of the powder in the silo. The batch powder in the hopper is in a fresh and loose state, which greatly reduces the possibility of powder bridging in the hopper and helps to discharge the material smoothly.

[0021] (3) The hopper is connected and controlled with the feeding pipe and A pneumatic ball valve through a pneumatic ball valve, a breathing tube, and a C tubular flexible connection, and shares a dust collector with the silo, thus realizing closed-loop control of the dust-laden airflow in the hopper feeding link and supplementation of fresh airflow in the hopper discharging link, which is environmentally friendly.

[0022] (4) The hopper is equipped with a weighing sensor and all external interfaces are connected in a flexible manner. In particular, a tubular flexible connection is provided between the hopper and the screw conveyor, which eliminates the influence of the vibration of the screw conveyor on the hopper weighing, and the measurement is true and reliable.

[0023] (5) Under continuous batching conditions, it is possible to realize static weighing of the hopper at the beginning and end states, eliminating the cumulative error of traditional continuous batching. It is also possible to calculate the average continuous discharge capacity of the batch based on the static weighing difference between the beginning and end states, and compare it with the real-time discharge capacity of the process. It has the function of evaluating the continuous discharge capacity both statically and dynamically.

[0024] (6) The hopper shares the same bin legs, realizing the integration of batching devices, with high space utilization and small space occupation.

[0025] 3. An isolation plate is provided on the upper part of the silo cone, which divides the cone into two sections, the upper section is divided by the isolation plate to form four identical areas with vertical side walls, eliminating the condition for high-level powder to form a bridge arch at the axis; the silo cone is provided with a flow-aiding device, which has the beneficial effect of the flow-aiding device (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, the material near the upper end is further activated, which is conducive to the continuous and stable flow of the powder in the bucket cone to the lower outlet. The rotary rake wall adopts a rectangular long thin plate structure, and the thin plate plane is parallel to the displacement direction of the rotary rake wall, which is conducive to cutting the powder bridge arch and has low energy consumption. It is equipped with an extended-range ear seat and an extended-range 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 silo slanted wall, and has strong adaptability to the silo structure. . It 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, and has low energy consumption. It is equipped with a rotating disk, and the gap space between the rotating disk and the disk shell remains unchanged during the rotation process, so as to avoid the material increment entering the gap space and causing jamming, and has high reliability. 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. The stroke of the driving cylinder can be adjusted to change the rotation angle of the rotating disk. The driving cylinder can realize the adjustment function of swinging the rotary rake arm once or twice with one movement of the driving cylinder. The driving cylinder can adopt a telescopic driving cylinder to drive the transmission shaft together with the torsion-increasing connecting rod, or a rotating driving cylinder can be used to directly drive the transmission shaft, which is convenient for selection according to the material load characteristics and realizes low-consumption drive). It has a dual flow-aiding function, which solves the problem of poor material discharge from the source.

[0026] 4. An isolation plate is provided on the upper part of the hopper cone, which divides the hopper cone into two sections, the upper section is divided by the isolation plate to form four identical areas with vertical side walls, eliminating the condition for high-level powder to form a bridge arch at the axis; the hopper cone is provided with a flow-aiding device, which has the beneficial effects of the flow-aiding device (same as above) and has a dual flow-aiding function, solving the problem of poor material discharge from the source.

[0027] 5. The bin cone is equipped with a pressure box, which can directly measure the upper powder pressure to calculate the powder level, with the advantage of continuous measurement.

[0028] 6. The screw conveyor can adopt a shorter body. In the continuous batching process, the frequency conversion response is sensitive and the metering accuracy is high.

[0029] 7. The dust collector is driven by a variable frequency fan, which can be equipped with air to remove dust according to different material inlet and outlet conditions, with low energy consumption.

[0030] 8. Both A and B tubular flexible connections adopt gradually changing diameters, which solves the problem of material accumulation and hanging in traditional equal-diameter flexible connections, affecting the measurement accuracy.

[0031] In summary, the present invention effectively solves the problems of poor versatility, unstable operating conditions, and difficult equipment and material management of existing filling powder batching equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention (front view); Figure 2 It is a schematic cross-sectional view of the structure of the present invention taken along line AA; Figure 3 It is a schematic cross-sectional view of the structure BB of the present invention; Figure 4 It is a schematic diagram of the structure in which the flow-aiding device of the present invention is installed on the bin cone or the bucket cone; Figure 5 It is a schematic diagram of equipment when the present invention implements a continuous batching method based on a double set of mining paste filling powder batching devices.

[0033] In the figure: 1. Silo cover; 2. Dust collector; 3. Safety valve; 4. Feeding pipe; 5. Silo tube; 6. Silo cone; 7. Flow aid; 8. A pneumatic ball valve; 9. B pneumatic ball valve; 10. Breathing tube; 11. C tubular flexible connection; 12. A pneumatic butterfly valve; 13. A tubular flexible connection; 14. Feeding pipe; 15. Ear seat; 16. Weighing sensor; 17. Ring beam; 18. Bucket cone; 19. Bucket cover; 20. Bucket tube; 21. B pneumatic butterfly valve; 22. B tubular flexible connection; 23. Screw conveyor; 24. Bin support leg; 25. Pressure box; 26. Cylinder ear seat; 27. D pin shaft; 28. E pin shaft; 29. ​​Rake tooth; 30. Rectangular flange; 31. Rotary rake arm; 32. Extended range connecting rod; 33. Rotary plate; 34. Torsion increasing connecting rod; 35. Drive cylinder; 36. Plate shell; 37. Rake arm ear seat; 38. A pin shaft; 39. Fixed transmission shaft; 40. Extended range ear seat; 41. C pin shaft; 42. B pin shaft. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0035] See also Figures 1 to 5 The mining paste filling powder batching device includes a silo 5, a silo cover 1 is provided on the top of the silo 5, a dust collector 2 and a safety valve 3 are provided on the silo cover 1, a feed port is provided on the top of the silo 5, the feed port is connected to the feeding pipe 4, the bottom end of the silo 5 is connected to the upper port of the silo cone 6; the lower port of the silo cone 6 is connected to one end of the feed pipe 14 through a pneumatic butterfly valve A 12 and a tubular soft connection 13, and the other end of the feed pipe 14 is connected to the bucket of the bucket 20 The top cover 19, the bottom end of the bucket tube 20 is connected to the upper end of the bucket cone 18, and the lower end of the bucket cone 18 is connected to the feed port of the screw conveyor 23 through the B pneumatic butterfly valve 21 and the B tubular soft connection 22; the mining paste filling powder batching device also includes a breathing tube 10, one end of the breathing tube 10 is connected to the side of the feeding pipe 4, and the other end is connected to the orifice of the bucket top cover 19; a plurality of flow-aiding devices 7 are provided on the cone wall of the bin cone 16 and the cone wall of the bucket cone 18.

[0036] Among them, the mining paste filling powder batching device also includes a silo support leg 24 arranged around the side wall of the bottom end of the silo tube 5; a ring beam 17 is arranged around the upper outer side of the bucket tube 20, and the outer side surface of the ring beam 17 is connected to the silo support leg 24; an ear seat 15 is arranged on the outer side of the bucket tube 20, and the lower surface of the ear seat 15 is connected to a weighing sensor 16, and the weighing sensor 16 is also connected to the upper surface of the ring beam 17.

[0037] The middle part of the feeding pipe 4 is connected in series with a pneumatic ball valve A 8 , one end of the breathing tube 10 is connected to a position on the feeding pipe 4 above the pneumatic ball valve A 8 , and the middle part of the breathing tube 10 is connected in series with a pneumatic ball valve B 9 and a tubular flexible connection C 11 .

[0038] The flow-aiding device 7 includes a rectangular flange 30 with an orifice, a rotary rake arm 31, a range-increasing connecting rod 32, a rotary disk 33, a torsion-increasing connecting rod 34, a driving cylinder 35 and two parallel disk shells 36; a rake arm ear seat 37 is provided on the upper front part of the rectangular flange 30, and the rake arm ear seat 37 is hinged to the top of the rotary rake arm 31 through an A pin 38; the disk shell 36 is arranged at the lower back part of the rectangular flange 30, and the bottom edge of the disk shell 36 is welded to the edge of the orifice of the rectangular flange 30, the rotary disk 33 is arranged between the two disk shells 36, and a fixed transmission shaft 39 is provided at the center of the rotary disk 33, and the two ends of the fixed transmission shaft 39 are respectively rotatably connected to the center of the two disk shells 36; The middle part of the front of the rotary rake arm 31 is provided with a range-extending ear seat 40, and the outer side of the edge of the rotary disk 33 is provided with a protruding ear hole, and the protruding ear hole is hinged to one end of the range-extending connecting rod 32 through a C pin shaft 41, and the other end of the range-extending connecting rod 32 is hinged to the range-extending ear seat 40 through a B pin shaft 42; a cylinder ear seat 26 is provided on the upper part of the back of the rectangular flange 30, and the top end of the drive cylinder 35 is hinged to the cylinder ear seat 26 through a D pin shaft 27, and the execution end of the drive cylinder 35 is hinged to one end of the torsion-increasing connecting rod 34 through an E pin shaft 28, and the other end of the torsion-increasing connecting rod 34 is fixedly connected to a fixed transmission shaft 39; a rake tooth 29 is provided on the rotary rake arm 31; the rotary rake arm 31 adopts a rectangular long parallel double-plate structure, and the flat The double plates are provided with rake tooth mounting holes, and the rake teeth 29 are installed in the rake tooth mounting holes, and the length of the rake teeth 29 is greater than the spacing between the parallel double plates; the rectangular flange 30 is installed on the outer side of the cone wall of the bin cone 6 and the outer side of the cone wall of the bucket cone 18, and the rotary rake arm 31 is in the inner cavity of the bin cone 6 or the bucket cone 18; the upper part of the inner cavity of the bin cone 6 is provided with an isolation plate welded to the inner wall of the bin cone 6 or the bucket cone 18, and the isolation plate divides the inner cavity of the bin cone 6 or the bucket cone 18 into four equal areas, and the multiple flow-aiding devices 7 are evenly distributed in the four equal areas; the top edge of the isolation plate is flush with the top edge of the bin cone 6 or the bucket cone 18, and the bottom edge of the isolation plate is parallel to the bottom edge of the bin cone 6 or the bucket cone 18; the bottom end of the rotary rake arm 31 is lower than the bottom edge of the isolation plate.

[0039] Four flow-aiding devices 7 are installed on the bin cone 6 and the bucket cone 18 . The flow-aiding devices 7 are arranged at intervals of 90° along the cone wall of the bin cone 6 or the cone wall of the bucket cone 18 .

[0040] The angle between the center line of the flow-aiding device 7 and the plane where the adjacent isolation plate is located is 45°.

[0041] The isolation plate includes an isosceles trapezoidal plate and two right-angled trapezoidal plates, the waistline of the isosceles trapezoidal plate is welded to the inner wall of the bin cone 6 or the bucket cone 18, the oblique waistline of the right-angled trapezoidal plate is welded to the inner wall of the bin cone 6 or the bucket cone 18, the vertical waistline of the right-angled trapezoidal plate is welded to the isosceles trapezoidal plate, and the two right-angled trapezoidal plates are in the same plane and perpendicular to the isosceles trapezoidal plates; a pressure box 25 is provided at the intersection of the isosceles trapezoidal plate and the top edge of the right-angled trapezoidal plate in the bin cone 6.

[0042] The disk housing 36 adopts a semicircular volute structure; the rotating disk 36 is a single-plate solid disk structure; and the driving cylinder 35 is a telescopic cylinder or a rotating cylinder.

[0043] The driving cylinder 35 is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.

[0044] One end of the range-extending connecting rod 32 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 32 is curved or straight; the distance between the two ends of the range-extending connecting rod 32 is greater than the vertical distance from the top of the range-extending ear seat 40 to the back side of the rotating rake arm 31; one end of the torsion-increasing connecting rod 34 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 34 is curved or straight; the distance between the two ends of the torsion-increasing connecting rod 34 is greater than the radius of the rotating disk 33.

[0045] The feed pipe 14 is a straight pipe of equal diameter, and its diameter is larger than the diameter of the pneumatic butterfly valve 12; The screw conveyor 23 is driven by a variable frequency motor, and the feed diameter is larger than the diameter of the pneumatic butterfly valve 21; The tubular flexible connection 13 has a gradually changing diameter, the small diameter end is equal to and connected to the pneumatic butterfly valve A 12, and the large diameter end is equal to and connected to the feed pipe 14; The tubular flexible connection 22 has a gradually changing diameter, the small diameter end is equal to and connected to the diameter of the pneumatic butterfly valve B 21, and the large diameter end is equal to and connected to the feed port of the screw conveyor 23; The C-shaped flexible connection 11 is an equal-diameter body, and has the same diameter as the pneumatic ball valve 9 and the breathing tube 10; The pneumatic ball valve A 8 has the same diameter as the feeding pipe 4; The dust collector 2 is driven by a variable frequency fan. Example 2

[0046] The continuous batching method based on the double-set mining paste filling powder batching device includes the following steps: (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve and the A pneumatic butterfly valve, and open the flow-aiding device located on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe into the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper passes through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feed pipe into the silo barrel and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: The batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feed pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time and calculates the real-time discharge capacity, and by correcting the operating frequency of the drive motor of the screw conveyor in real time, the discharge capacity reaches the set batching capacity and remains stable. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value. The actual discharge weight value compared with the actual discharge time is the average discharge capacity; (4): When the first batching device finishes step (3), the second batching device starts to synchronously execute step (3). The first batching device executes steps (1) and (2), and the second batching device executes steps (1) and (2) when step (3) is finished. The two batching devices cross-cycle to achieve continuous batching. Example 3

[0047] The intermittent batching method based on a single set of mining paste filling powder batching device includes the following steps: (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve 8 into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve, the A pneumatic butterfly valve 12, and open the flow-aiding device on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe 14 to enter the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper enters the silo barrel through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feeding pipe, and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: the batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve 21 and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feeding pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value; (4): Repeat steps (1) and (2) to achieve intermittent batching.

Claims

1. A mining paste filling powder batching device, characterized in that: The mining paste filling powder batching device comprises a silo (5), the top of which is provided with a silo cover (1), the silo cover (1) is provided with a dust collector (2) and a safety valve (3), the upper part of the silo (5) is provided with a feed port, the feed port is connected to a feed pipe (4), the bottom end of the silo (5) is connected to an upper port of a silo cone (6); the lower port of the silo cone (6) is connected to one end of a feed pipe (14) via a pneumatic butterfly valve (12) and a tubular flexible connection (13), and the other end of the feed pipe (14) is connected to the bottom of a bucket (20). The bucket top cover (19) is connected to the upper end of the bucket cone (18) at the bottom end of the bucket barrel (20), and the lower end of the bucket cone (18) is connected to the feed port of the screw conveyor (23) via a B pneumatic butterfly valve (21) and a B tubular flexible connection (22); the mining paste filling powder batching device also includes a breathing tube (10), one end of the breathing tube (10) is connected to the side of the feeding tube (4), and the other end is connected to the orifice of the bucket top cover (19); a plurality of flow-aiding devices (7) are provided on the cone wall of the bin cone (16) and / or the cone wall of the bucket cone (18).

2. The mining paste filling powder batching device according to claim 1, characterized in that: The mining paste filling powder batching device further comprises a bin support leg (24) arranged around the side wall of the bottom end of the bin tube (5); a ring beam (17) is arranged around the upper outer portion of the outer side of the bucket tube (20), and the outer side surface of the ring beam (17) is connected to the bin support leg (24); an ear seat (15) is arranged on the outer side of the bucket tube (20), and a weighing sensor (16) is connected to the lower surface of the ear seat (15), and the weighing sensor (16) is also connected to the upper surface of the ring beam (17).

3. The mining paste filling powder batching device according to claim 1, characterized in that: The middle part of the feeding pipe (4) is connected in series with a pneumatic ball valve A (8), one end of the breathing pipe (10) is connected to a position on the feeding pipe (4) above the pneumatic ball valve A (8), and the middle part of the breathing pipe (10) is connected in series with a pneumatic ball valve B (9) and a tubular flexible connection C (11).

4. The mining paste filling powder batching device according to claim 1, characterized in that: The flow-aiding device (7) comprises a rectangular flange (30) with an orifice, a rotary rake arm (31), a range-increasing connecting rod (32), a rotary disk (33), a torsion-increasing connecting rod (34), a driving cylinder (35) and two parallel disk shells (36); a rake arm ear seat (37) is provided at the upper front portion of the rectangular flange (30), and the rake arm ear seat (37) is hinged to the top of the rotary rake arm (31) via an A pin (38); the disk shell (36) is arranged at the lower back portion of the rectangular flange (30), and the bottom edge of the disk shell (36) is welded to the orifice edge of the rectangular flange (30); the rotary disk (33) is arranged between the two disk shells (36), and a fixed transmission shaft (39) is provided at the center of the rotary disk (33), and the two ends of the fixed transmission shaft (39) are respectively rotatably connected to the centers of the two disk shells (36); A range-extending ear seat (40) is provided at the middle of the front of the rotary rake arm (31); a protruding ear hole is provided on the outer side of the edge of the rotary disk (33); the protruding ear hole is hinged to one end of the range-extending connecting rod (32) via a C pin shaft (41); the other end of the range-extending connecting rod (32) is hinged to the range-extending ear seat (40) via a B pin shaft (42); a cylinder ear seat (26) is provided at the upper back of the rectangular flange (30); the top end of the drive cylinder (35) is hinged to the cylinder ear seat (26) via a D pin shaft (27); the actuating end of the drive cylinder (35) is hinged to one end of a torsion-increasing connecting rod (34) via an E pin shaft (28); the other end of the torsion-increasing connecting rod (34) is fixedly connected to a fixed transmission shaft (39); a rake tooth (29) is provided on the rotary rake arm (31); the rotary rake arm (31) adopts a rectangular long parallel double plate structure; The parallel double plates are provided with rake tooth mounting holes, the rake teeth (29) are mounted in the rake tooth mounting holes, and the length of the rake teeth (29) is greater than the spacing between the parallel double plates; the rectangular flange (30) is mounted on the outer side of the cone wall of the bin cone (6) and the outer side of the cone wall of the bucket cone (18), and the rotary rake arm (31) is in the inner cavity of the bin cone (6) or the bucket cone (18); the upper part of the inner cavity of the bin cone (6) is provided with an isolation plate welded to the inner wall of the bin cone (6) or the bucket cone (18), the isolation plate divides the inner cavity of the bin cone (6) or the bucket cone (18) into four equal areas, and the multiple flow-aiding devices (7) are evenly distributed in the four equal areas; the top edge of the isolation plate is flush with the top edge of the bin cone (6) or the bucket cone (18), and the bottom edge of the isolation plate is parallel to the bottom edge of the bin cone (6) or the bucket cone (18); the bottom end of the rotary rake arm (31) is lower than the bottom edge of the isolation plate.

5. The mining paste filling powder batching device according to claim 4, characterized in that: The bin cone (6) and the bucket cone (18) are both provided with four flow-aiding devices (7), and the flow-aiding devices (7) are arranged at intervals of 90° along the cone wall of the bin cone (6) or the cone wall of the bucket cone (18).

6. The anti-clogging bucket cone for filling powder with mining paste according to claim 5, characterized in that: The angle between the center line of the flow-aiding device (7) and the plane where the adjacent isolation plate is located is 45°.

7. The anti-clogging bucket cone for filling powder with mining paste according to claim 6, characterized in that: The isolation plate comprises an isosceles trapezoidal plate and two right-angled trapezoidal plates, the waistline of the isosceles trapezoidal plate is welded to the inner wall of the bin cone (6) or the bucket cone (18), the oblique waistline of the right-angled trapezoidal plate is welded to the inner wall of the bin cone (6) or the bucket cone (18), the vertical waistline of the right-angled trapezoidal plate is welded to the isosceles trapezoidal plate, and the two right-angled trapezoidal plates are in the same plane and perpendicular to the isosceles trapezoidal plate; a pressure box (25) is provided at the intersection of the top edges of the isosceles trapezoidal plate and the right-angled trapezoidal plate in the bin cone (6).

8. The anti-clogging bucket cone for filling powder with mining paste according to claim 4, characterized in that: The disk housing (36) adopts a semicircular volute structure; the rotary disk (36) is a single-plate solid disk structure; and the driving cylinder (35) is a telescopic cylinder or a rotating cylinder.

9. The anti-clogging bucket cone for filling powder with mining paste according to claim 8, characterized in that: The driving cylinder (35) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.

10. A batching method based on the batching device for mining paste filling powder according to any one of claims 1 to 9, characterized in that: The method includes an intermittent batching method based on a single set of mining paste filling powder batching equipment and a continuous batching method based on two sets of mining paste filling powder batching equipment; The intermittent batching method based on a single set of mining paste filling powder batching device includes the following steps: (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve 8 into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve, the A pneumatic butterfly valve 12, and open the flow-aiding device on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe 14 to enter the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper enters the silo barrel through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feeding pipe, and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: the batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve 21 and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feeding pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value; (4): Repeat steps (1) and (2) to achieve intermittent batching; The continuous batching method based on the double-set mining paste filling powder batching device includes the following steps: (1): Silo loading: Close the B pneumatic ball valve and A pneumatic butterfly valve, open the A pneumatic ball valve, start the dust collector, and pneumatically convey the external powder through the feeding pipe and the A pneumatic ball valve into the silo space formed by the silo tube and the silo cone. The material height in the silo is monitored by the pressure of the pressure box. When the silo is full, stop loading; close the A pneumatic ball valve to complete the silo loading; (2): Feeding from the silo to the hopper: Close the B pneumatic butterfly valve, open the B pneumatic ball valve and the A pneumatic butterfly valve, and open the flow-aiding device located on the silo cone. The powder in the silo passes through the A pneumatic butterfly valve, the A tubular flexible connection, and the feed pipe into the hopper space formed by the bucket barrel and the bucket cone. The air in the hopper passes through the breathing tube, the C tubular flexible connection, the B pneumatic ball valve, and the feed pipe into the silo barrel and is discharged through the dust collector. The weighing sensor monitors the weight of the powder in the hopper in real time. When the weight of the powder in the hopper reaches the set value, close the A pneumatic butterfly valve and the flow-aiding device of the silo cone, and record the weight of the powder in the hopper as the initial value. (3): The hopper doses materials outward: The batching device turns on the screw conveyor, opens the A pneumatic ball valve, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket, and the powder in the hopper enters the feed port of the screw conveyor through the B pneumatic butterfly valve and the B tubular flexible connection, and is fed to the outside through the discharge port of the screw conveyor; the external air enters from the lower port of the feed pipe, and enters the bucket barrel through the A pneumatic ball valve, B pneumatic ball valve, breathing tube and C tubular flexible connection to achieve air pressure balance inside and outside the hopper; the weighing sensor monitors the reduction of the hopper powder in real time and calculates the real-time discharge capacity, and by correcting the operating frequency of the drive motor of the screw conveyor in real time, the discharge capacity reaches the set batching capacity and remains stable. When the weight of the remaining powder in the hopper reaches the set closing value, the screw conveyor, B pneumatic butterfly valve and the flow-aiding device located at the cone of the bucket are closed, and the weight of the powder in the hopper is recorded as the residual value. The difference between the initial value and the residual value is the actual discharge weight value. The actual discharge weight value compared with the actual discharge time is the average discharge capacity; (4): When the first batching device finishes step (3), the second batching device starts to synchronously execute step (3). The first batching device executes steps (1) and (2), and the second batching device executes steps (1) and (2) when step (3) is finished. The two batching devices cross-cycle to achieve continuous batching.

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