An automatic filling mixed slurry system

Abstract

This invention discloses an automated filling and mixing slurry system, comprising a sand silo, a sand silo lifting and movable door mechanism, an arc-shaped guide rail, a guide rail support lifting device, a sliding mechanism, a spiral conveyor blade, a spiral conveyor blade baffle, a mixer, a cement silo, and a water storage tank. The sand silo of this invention adopts a reciprocating spiral discharge and top-down layered discharge structure design. Compared with the traditional vertical sand silo gravity discharge, this automatic sand discharge structure allows for precise control of the sand discharge flow rate, while avoiding the problem of unstable slurry concentration caused by hydraulic conveying. Furthermore, the automatic discharge structure is installed on the outside of the sand silo and inside the sand layer, occupying minimal space. During use, the rotation speed of the spiral conveyor blade and the moving speed of the sliding mechanism can be controlled to adjust the sand discharge flow rate. This invention achieves automatic feeding and mixing of sand and cement slurry, with a high degree of automation, improving filling efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mine backfilling technology, specifically relating to an automated backfilling slurry mixing system. Background Technology

[0002] In current mine backfilling operations, different slurry ratios are required for different filling stages. Existing technologies typically use belt conveyors, vertical sand bins for gravity transport, manual handling, vehicle transport, and hydraulic conveying to transfer sand from the bins to a mixing mixer for mixing with cement slurry. Belt conveyors occupy a lot of space, and mine construction sites have complex conditions, with some sites lacking the conditions for installing belt conveyors. Gravity conveying cannot accurately control the sand flow rate, manual and vehicle handling are inefficient, and the high-pressure water flow of hydraulic conveying causes the separation of heavier and lighter sand particles, resulting in unstable slurry concentration and affecting the strength after setting. Currently, there is no automated mixing and batching equipment specifically designed for mine backfilling slurry. Therefore, developing an automated backfilling slurry mixing system is essential. Summary of the Invention

[0003] To address the above technical problems, the present invention aims to provide an automated filling and mixing slurry system that ensures precise control of sand flow and improves work efficiency.

[0004] The objective of this invention is achieved as follows: It includes a sand silo, a sand silo lifting and movable door mechanism, an arc-shaped guide rail, a guide rail support lifting device, a sliding mechanism, spiral conveyor blades, spiral conveyor blade baffles, a mixing machine, a cement silo, and a water storage tank. The sand silo lifting and movable door mechanism is located at the discharge port on one side of the sand silo. The bottom of the sand silo is equipped with a guide rail support lifting device. An arc-shaped guide rail is horizontally arranged inside the sand silo and connected to the guide rail support lifting device. The sliding mechanism slides with the arc-shaped guide rail. The sliding mechanism is equipped with a spiral conveyor blade drive motor and a spiral conveyor blade baffle drive motor. A motor drives one end of a spiral conveyor blade to rotate, and the other end of the spiral conveyor blade is connected to the movable door of the sand silo lifting and moving door mechanism through a universal joint. The spiral conveyor blade baffle is driven by a motor to rotate one end of the spiral conveyor blade baffle, and the spiral conveyor blade baffle is distributed along the length of the spiral conveyor blade on one side of the spiral conveyor blade. The spiral conveyor blade baffle does not contact the spiral conveyor blade. The outer side of the sand silo outlet is connected to the mixing machine through a guide chute. The cement silo is connected to the mixing machine through a cement slurry conveying pipe. The water storage tank is connected to the cement silo through a water pipe. The mixing machine is equipped with a mortar discharge pipe.

[0005] Preferably, there are two sand bins, each semi-circular in shape, with their straight edges corresponding to each other. The discharge port is located at the center of the straight edge of the sand bin. The arc-shaped guide rail is a circular arc-shaped guide rail, with both ends of the arc-shaped guide rail corresponding to the straight edge of the sand bin. The two semi-circular sand bins are used to store different types of sand, such as manufactured sand and tailings sand. The manufactured sand bin and tailings sand bin can operate simultaneously, and cement slurry can be mixed with the two types of sand for filling.

[0006] Preferably, the sliding mechanism includes a mounting frame, a lower mounting bracket, movable wheels, positioning wheel sets, and a movable wheel drive motor. The lower mounting bracket is fixed to the bottom of the mounting frame, and the arc-shaped guide rail passes through the gap between the lower mounting bracket and the mounting frame. The positioning wheel sets are respectively located on the bottom of the mounting frame and on the lower mounting bracket, with two positioning wheel sets corresponding vertically. One positioning wheel set slides in cooperation with the limiting groove on the top surface of the arc-shaped guide rail, and the other positioning wheel set slides in cooperation with the limiting groove on the bottom surface of the arc-shaped guide rail. The movable wheel drive motor is located inside the mounting frame and drives the movable wheels to rotate. The movable wheels slide in cooperation with the side of the arc-shaped guide rail. The spiral conveying blade drive motor is located on the top of the mounting frame. The shaft end of the spiral conveying blade passes through the bearing on the side of the mounting frame, and the spiral conveying blade drive motor is connected to the end of the spiral conveying blade through a spiral bevel gear. The drive motor for the spiral conveyor blade baffle is located within the mounting frame. The power output section of the drive motor is equipped with a spur gear. A mounting plate is located at the end of the spiral conveyor blade baffle near the mounting frame. The shaft of the spiral conveyor blade passes through the mounting plate, and the shaft rotates in conjunction with the mounting plate, ensuring that the mounting plate and the spiral conveyor blade baffle rotate normally without detaching. An arc-shaped rack is fixed to the outside of the mounting plate, located outside the mounting frame, and the spur gear meshes with the arc-shaped rack. A positioning wheel set serves as a limit, enhancing movement stability. The sliding mechanism is constrained on the arc-shaped guide rail by the positioning wheel set, which positions the top and bottom surfaces of the arc-shaped guide rail, preventing sand or dirt from affecting the sliding mechanism's movement and ensuring reliable operation. Furthermore, the internal structure of the sliding mechanism is simple; controlling the speed and direction of each motor is sufficient to control the sliding.

[0007] Among them, the sand silo lifting and movable door mechanism is a movable silo door well known to those skilled in the art. It usually includes a movable silo door set at the discharge port and a lifting cylinder connected to the movable silo door (which can be set on one side of the movable silo door). The lifting cylinder drives the movable silo door to rise and fall. After the silo door is lowered, the discharge port is exposed, and the sand is discharged through the discharge port.

[0008] The guide rail support lifting device can specifically be a cylinder and a support rod. One end of the support rod is connected to the arc-shaped guide rail, and the other end is connected to the cylinder. The cylinder drives the support rod to rise and fall, which in turn drives the arc-shaped guide rail to rise and fall. More preferably, each arc-shaped guide rail has three cylinders and three support rods, which respectively support the two ends and the midpoint of the arc-shaped guide rail.

[0009] The above-mentioned cylinders can be selected as stroke-adjustable cylinders to accurately control the lifting distance.

[0010] Mixing machines are usually equipped with a mixer to mix various materials evenly; cement silos are also equipped with a mixer to mix cement slurry evenly.

[0011] Universal joints are common connectors in this field, typically consisting of two hinged joints. One end of the joint connects to the end of the spiral conveyor blade, and the other end connects to the movable door. The universal joint serves two purposes: firstly, it fixes the end of the spiral conveyor blade; secondly, it rotates along with the spiral conveyor blade during its movement, ensuring the normal movement of the spiral conveyor blade.

[0012] Preferably, the guide rail support lifting device is located at the bottom outside the sand silo, and the guide rail support lifting device passes through the bottom of the sand silo and is connected to the arc-shaped guide rail.

[0013] Preferably, the feed trough is equipped with a sand flow meter, the cement slurry conveying pipe is equipped with a cement flow meter, and the water pipe is equipped with a water flow meter; the flow meter is used to monitor the flow rate and can be used in conjunction with equipment such as solenoid valves to realize automatic quantitative preparation of mixed slurry.

[0014] The beneficial effects of this invention are:

[0015] 1. The sand silo of this invention adopts a reciprocating spiral discharge and top-down layered discharge structure design. Compared with the traditional vertical sand silo gravity discharge, this automatic sand discharge structure allows for precise control of the sand discharge flow rate. Furthermore, it solves the long-standing problem of sand agglomeration preventing smooth discharge in traditional vertical sand silos. It also avoids the problem of unstable slurry concentration caused by hydraulic conveying. Moreover, the automatic discharge structure is installed on the outside of the sand silo and inside the sand layer, occupying minimal space. During use, the rotation speed of the spiral conveyor blades and the moving speed of the sliding mechanism can be controlled to adjust the sand discharge flow rate. This invention achieves automatic feeding and mixing of sand and cement slurry, resulting in a high degree of automation and improved filling efficiency.

[0016] 2. The sand bins of the present invention can be arranged in a semi-circular double sand bin configuration, which can realize the simultaneous operation of the manufactured sand bins and tailings bins, and at the same time mix cement slurry with the two types of sand for filling.

[0017] 3. The sliding mechanism of this invention has a simple structure, strong adaptability of parts, and the internal parts can be replaced at any time. The positioning wheel group and the moving wheel cooperate to form an elastic damping effect at the contact point with the ring guide rail, which can reduce the wear of internal parts. Moreover, the sliding can be controlled by only controlling the speed and direction of each motor.

[0018] 4. This invention can also be equipped with various monitoring devices, such as flow meters, solenoid valves, controllers, etc., to achieve fully automatic quantitative configuration, accurately control the sand and cement mixing ratio, and adjust the ratio in real time according to the filling plan; this invention can control the discharge speed through the screw conveyor and provide real-time feedback through various flow meters to ensure the continuity and uniformity of the discharge. Attached Figure Description

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0020] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the sliding mechanism;

[0022] Figure 4 This is a side view of the sliding mechanism.

[0023] In the diagram: 1-Sand silo, 2-Sand silo lifting and movable door mechanism, 3-Arc-shaped guide rail, 4-Guide rail support lifting device, 5-Sliding mechanism, 501-Mounting frame, 502-Lower mounting frame, 503-Moving wheel, 504-Positioning wheel set, 505-Moving wheel drive motor, 506-Bearing, 507-Spur gear, 508-Arc-shaped rack, 509-Helical bevel gear, 6-Helical conveyor blade, 7-Helical conveyor blade baffle, 8-Mixing mixer, 9-Cement silo, 10-Water storage tank, 11-Helical conveyor blade drive motor, 12-Helical conveyor blade baffle drive motor, 13-Universal joint, 14-Guide chute, 15-Cement slurry conveying pipe, 16-Water pipe, 17-Mortar discharge pipe, 18-Mounting plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings, but this is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0025] Example 1

[0026] As attached Figures 1-2The automated filling slurry system shown in this embodiment includes a sand silo 1, a sand silo lifting and movable door mechanism 2, an arc-shaped guide rail 3, a guide rail support lifting device 4, a sliding mechanism 5, a spiral conveyor blade 6, a spiral conveyor blade baffle 7, a mixer 8, a cement silo 9, and a water storage tank 10. The sand silo lifting and movable door mechanism 2 is located at the discharge port on one side of the sand silo 1. The bottom of the sand silo 1 is equipped with a guide rail support lifting device 4. The arc-shaped guide rail 3 is horizontally arranged inside the sand silo 1 and is connected to the guide rail support lifting device 4. The sliding mechanism 5 is slidably engaged with the arc-shaped guide rail 3. The sliding mechanism 5 is equipped with a spiral conveyor blade drive motor 11 and a spiral conveyor blade baffle drive motor 12. Motor 11 drives one end of the spiral conveyor blade 6 to rotate, and the other end of the spiral conveyor blade 6 is connected to the movable door of the sand silo lifting and movable door mechanism 2 through universal joint 13. The spiral conveyor blade baffle drive motor 12 drives one end of the spiral conveyor blade baffle 7 to rotate, and the spiral conveyor blade baffle 7 is distributed along the longitudinal direction of the spiral conveyor blade 6 on one side of the spiral conveyor blade 6, without contacting the spiral conveyor blade 6. The outer side of the discharge port of the sand silo 1 is connected to the mixing machine 8 through a guide trough 14. The cement silo 9 is connected to the mixing machine 8 through a cement slurry conveying pipe 15. The water storage tank 10 is connected to the cement silo 9 through a water pipe 16. The mixing machine 8 is equipped with a mortar discharge pipe 17. Figure 1 From a bird's-eye view, Figure 2 This is a downward-looking angle.

[0027] Example 2

[0028] The automated filling slurry system in this embodiment is based on embodiment 1. There are two sand silos 1, which are semi-circular with their straight edges facing each other. The discharge port is located at the center of the straight edge of the sand silo 1. The arc-shaped guide rail 3 is an arc-shaped guide rail with both ends corresponding to the straight edge of the sand silo 1.

[0029] Example 3

[0030] As attached Figure 3 ~Appendix Figure 4The automated filling slurry system shown in this embodiment is based on Embodiment 2. The sliding mechanism 5 includes a mounting frame 501, a lower mounting bracket 502, a moving wheel 503, a positioning wheel set 504, and a moving wheel drive motor 505. The lower mounting bracket 502 is fixed to the bottom of the mounting frame 501, and the arc-shaped guide rail 3 passes through the gap between the lower mounting bracket 502 and the mounting frame 501. The positioning wheel sets 504 are respectively located on the bottom of the mounting frame 501 and the lower mounting bracket 502. The two positioning wheel sets 504 are vertically aligned. One positioning wheel set 504 slides in cooperation with the limiting groove on the top surface of the arc-shaped guide rail 3, and the other positioning wheel set 504 slides in cooperation with the limiting groove on the bottom surface of the arc-shaped guide rail 3. The moving wheel drive motor 505 is located inside the mounting frame 501 and drives the moving wheel 503 to rotate. The arc-shaped guide rail 3 is slidably fitted on the side. The spiral conveying blade drive motor 11 is located on the top of the mounting frame 501. The shaft end of the spiral conveying blade 6 passes through the bearing 506 on the side of the mounting frame 501. The spiral conveying blade drive motor 11 is connected to the end of the spiral conveying blade 6 through the spiral bevel gear 509. The spiral conveying blade baffle drive motor 12 is located inside the mounting frame 501. The power output part of the spiral conveying blade baffle drive motor 12 is provided with a spur gear 507. The spiral conveying blade baffle 7 is provided with a mounting plate 18 at one end near the mounting frame 501. The shaft of the spiral conveying blade 6 passes through the mounting plate 18, and the shaft of the spiral conveying blade 6 is rotatably fitted with the mounting plate 18. An arc-shaped rack 508 is fixed on the outside of the mounting plate 18, and the arc-shaped rack 508 is located outside the mounting frame 501. The spur gear 507 meshes with the arc-shaped rack 508.

[0031] The spiral conveyor blade drive motor 11 drives the spiral conveyor blade 6 to rotate via the spiral bevel gear 509; the spiral conveyor blade baffle drive motor 12 drives the spur gear 507 and the arc rack 508 to rotate, causing the spiral conveyor blade baffle 7 to rotate; the moving wheel drive motor 505 drives the moving wheel 503 to rotate, realizing the sliding mechanism 5 to move along the arc guide rail 3, and the upper and lower sets of positioning wheel sets 504 play a limiting role, enhancing the stability of movement.

[0032] Example 4

[0033] The automated filling slurry system in this embodiment is based on embodiment 3. The guide rail support lifting device 4 is located at the bottom outside the sand silo 1. The guide rail support lifting device 4 passes through the bottom of the sand silo 1 and is connected to the arc-shaped guide rail 3.

[0034] Example 5

[0035] The automated filling slurry system in this embodiment is based on embodiment 4. The feed trough 14 is equipped with a sand flow meter, the cement slurry conveying pipe 15 is equipped with a cement flow meter, and the water pipe 16 is equipped with a water flow meter.

[0036] The working principle and process of this invention: The sliding mechanism 5 reciprocates along the arc-shaped guide rail 3, causing the spiral conveying blade 6 to move synchronously. During the movement, the spiral conveying blade baffle 7 is always positioned behind the spiral conveying blade 6 in the forward direction. During the movement of the sliding mechanism 5, the spiral conveying blade 6 rotates under the drive of the spiral conveying blade drive motor 11, cooperating with the spiral conveying blade baffle 7 to convey the uppermost layer of sand from the sand bin 1 to the end of the spiral conveying blade 6, and discharges it from the outlet into the guide trough 14. During this process, when the sliding mechanism 5 reaches the end of the arc-shaped guide rail 3, it moves in the opposite direction. The spiral conveying blade baffle drive motor 12 drives the spiral conveying blade baffle 7 to rotate behind the spiral conveying blade 6, thus advancing the spiral conveying blade. The baffle 7 of the conveying blades helps to convey the sand more smoothly along the conveying direction of the spiral conveying blades 6. Then, the guide rail support lifting device 4 and the sand silo lifting and movable door mechanism 2 lower synchronously to the same height, causing the arc-shaped guide rail 3, the spiral conveying blades 6, and the spiral conveying blade baffle 7 to descend. During the reciprocating movement and rotation of the spiral conveying blades 6, the conveying continues, that is, the sand is discharged into the mixing mixer 8 layer by layer through the spiral conveying blades 6. When the spiral conveying blades 6 reach the bottom of the sand silo 1 and have completed their work, the guide rail support lifting device 4 raises the arc-shaped guide rail 3 to its initial state, and at the same time, the sand silo lifting and movable door mechanism 2 resets. The sand silo is then filled, and the above process is repeated to continue conveying sand.

[0037] Water in the reservoir 10 is sent to the cement silo 9 through the water pipe 16, and cement slurry is prepared in the cement silo 9. The cement slurry in the cement silo 9 is sent to the mixing machine 8 through the cement slurry conveying pipe 15. The mixing machine 8 mixes the cement slurry and sand evenly, and then discharges it through the mortar discharge pipe 17 for mine backfilling.

Claims

1. An automated filling system for mixed slurry, comprising a sand silo (1), a sand silo lifting and movable door mechanism (2), an arc-shaped guide rail (3), a guide rail support lifting device (4), a sliding mechanism (5), a spiral conveyor blade (6), a spiral conveyor blade baffle (7), a mixer (8), a cement silo (9), and a water storage tank (10), characterized in that... The sand silo lifting and movable door mechanism (2) is located at the discharge port on one side of the sand silo (1). The bottom of the sand silo (1) is provided with a guide rail support lifting device (4). An arc-shaped guide rail (3) is horizontally arranged inside the sand silo (1). The arc-shaped guide rail (3) is connected to the guide rail support lifting device (4). The sliding mechanism (5) is slidably engaged with the arc-shaped guide rail (3). The sliding mechanism (5) is equipped with a spiral conveying blade drive motor (11) and a spiral conveying blade baffle drive motor (12). The spiral conveying blade drive motor (11) drives one end of the spiral conveying blade (6) to rotate. The other end of the spiral conveying blade (6) is connected to the sand silo lifting and movable door mechanism (2) through a universal joint (13). The movable door of the spiral conveyor blade (7) is connected. The spiral conveyor blade (7) is driven by the spiral conveyor blade (7) drive motor (12) to rotate one end of the spiral conveyor blade (7). The spiral conveyor blade (7) is distributed along the longitudinal direction of the spiral conveyor blade (6) on one side of the spiral conveyor blade (6). The spiral conveyor blade (7) does not contact the spiral conveyor blade (6). The outer side of the discharge port of the sand bin (1) is connected to the mixing machine (8) through the guide trough (14). The cement bin (9) is connected to the mixing machine (8) through the cement slurry conveying pipe (15). The water storage tank (10) is connected to the cement bin (9) through the water pipe (16). The mixing machine (8) is equipped with a mortar discharge pipe (17). There are two sand bins (1). The sand bins (1) are semi-circular, and the straight edges of the two sand bins (1) correspond to each other. The discharge port is located at the center of the straight edge of the sand bin (1). The arc-shaped guide rail (3) is an arc-shaped guide rail. Both ends of the arc-shaped guide rail (3) correspond to the straight edge of the sand bin (1). The sliding mechanism (5) includes a mounting frame (501), a lower mounting bracket (502), a moving wheel (503), a positioning wheel set (504), and a moving wheel drive motor (505). The lower mounting bracket (502) is fixed to the bottom of the mounting frame (501), and the arc-shaped guide rail (3) passes through the gap between the lower mounting bracket (502) and the mounting frame (501). The positioning wheel set (504) is respectively located at the bottom of the mounting frame (501) and the lower mounting bracket. On the frame (502), two positioning wheel sets (504) are positioned vertically and vertically respectively. One positioning wheel set (504) slides in contact with the limiting groove on the top surface of the arc-shaped guide rail (3), and the other positioning wheel set (504) slides in contact with the limiting groove on the bottom surface of the arc-shaped guide rail (3). The moving wheel drive motor (505) is located inside the mounting frame (501). The moving wheel drive motor (505) drives the moving wheel (503) to rotate. The moving wheel (503) slides in contact with the side of the arc-shaped guide rail (3). The spiral conveying blade drive motor (11) is located on the top of the mounting frame (501). The shaft end of the spiral conveying blade (6) passes through the bearing (506) on the side of the mounting frame (501). The spiral conveying blade drive motor (11) is connected to the end of the spiral conveying blade (6) through the spiral bevel gear (509). The spiral conveying blade baffle drive motor (12) is located inside the mounting frame (501). The power output part of the spiral conveying blade baffle drive motor (12) is provided with a spur gear (507). The spiral conveying blade baffle (7) is provided with a mounting plate (18) at one end near the mounting frame (501). The shaft of the spiral conveying blade (6) passes through the mounting plate (18), and the shaft of the spiral conveying blade (6) rotates with the mounting plate (18). An arc-shaped rack (508) is fixed on the outside of the mounting plate (18), and the arc-shaped rack (508) is located outside the mounting frame (501). The spur gear (507) meshes with the arc-shaped rack (508).

2. The automated filling and mixing slurry system according to claim 1, characterized in that... The guide rail support lifting device (4) is located at the bottom outside the sand bin (1). The guide rail support lifting device (4) passes through the bottom of the sand bin (1) and is connected to the arc-shaped guide rail (3).

3. The automated filling and mixing slurry system according to claim 1, characterized in that... The feed trough (14) is equipped with a sand flow meter, the cement slurry conveying pipe (15) is equipped with a cement flow meter, and the water pipe (16) is equipped with a water flow meter.

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