Mine tailings cemented filling equipment

Abstract

The application belongs to the technical field of mine tailings filling and relates to a mine tailings cementation filling device, which comprises a supporting base, a stirring cylinder is fixedly connected to the middle part of the inner side of the supporting base, a tailings feeding pipe is fixedly connected to one side of the outer side of the stirring cylinder, a mixing assembly is arranged in the stirring cylinder, the mixing assembly comprises a servo motor A, a rotating shaft, a stirring rod, an auger A, a ratchet module and an auger B, and the servo motor A is fixedly connected to the top of the outer side of the stirring cylinder. Through the cooperative matching of the auger A, the rotating shaft and the stirring rod, the auger A can transport the material at the bottom of the stirring cylinder upward through the fixed cylinder to realize material turning, effectively reduce the material particle size stratification problem caused by simple stirring, fully mix the tailings and the cementing agent, improve the uniformity and strength of the filling slurry, ensure the filling quality, reduce the use amount of the cementing agent and reduce the filling cost.

Description

Technical Field

[0001] This invention belongs to the field of mine tailings filling technology, and relates to a mine tailings cemented filling device. Background Technology

[0002] Mine tailings, also known as tailings, are the main solid waste generated during mining and mineral processing. Almost all mineral and non-metallic mines produce tailings during production, and the output is huge, usually measured in tens of thousands of tons.

[0003] The following technical problems were found in the existing technology: During the mixing and stirring of tailings and cementitious agents, stirring is carried out by only a single stirring structure, which easily leads to the stratification of material particles by size, resulting in uneven stirring, affecting the strength and stability of the filling slurry, and failing to meet the quality requirements of mine filling. Summary of the Invention

[0004] The technical problem to be solved by this invention is that when mixing tailings and binders, stirring is carried out by a single stirring structure, the material particles are easily separated by size, resulting in uneven stirring, which affects the strength and stability of the filling slurry and fails to meet the quality requirements of mine filling.

[0005] The present invention discloses a tailings cemented backfilling device for mines, comprising a support base, a mixing drum fixedly connected to the inner center of the support base, a tailings feed pipe fixedly connected to the outer side of the mixing drum, a mixing assembly disposed inside the mixing drum, the mixing assembly comprising a servo motor A, a rotating shaft, a mixing rod, an auger A, a ratchet module, and an auger B, the servo motor A fixedly connected to the top outer side of the mixing drum, the rotating shaft fixedly connected to the output end of the servo motor A, the rotating shaft rotating inside the mixing drum, the mixing rod fixedly connected to the top outer side of the rotating shaft near the tailings feed pipe, the auger A fixedly connected to the middle outer side of the rotating shaft, the ratchet module fixedly connected to the outer side of the rotating shaft away from the servo motor A, and the auger B fixedly connected to the outer side of the ratchet module.

[0006] The mixing assembly also includes a tailings storage tank, a binder storage tank, and a binder feed pipe. The tailings storage tank is fixedly connected to the outer end of the tailings feed pipe away from the mixing drum. The binder storage tank is fixedly connected to the outer side of the tailings storage tank. The binder feed pipe is connected to the bottom of the outer side of the binder storage tank. The end of the binder feed pipe away from the binder storage tank is fixedly connected to the mixing drum. The mixing drum is connected to the binder feed pipe.

[0007] A support cylinder is fixed to the top of the outer side of the mixing drum, and multiple ventilation slots are formed on the outside of the support cylinder.

[0008] A fixed cylinder is fixedly connected to the middle of the inner side of the stirring drum, and the auger A rotates inside the fixed cylinder.

[0009] The fixed cylinder is in close contact with the bottom inner side of the mixing cylinder.

[0010] A finished product storage box is fixed to the bottom inner side of the support base, and a guide slope is provided on the bottom inner side of the finished product storage box.

[0011] An electric telescopic rod is fixed to one side of the outside of the finished product storage box. A material extraction tube is hinged to the telescopic end of the electric telescopic rod. One end of the material extraction tube is located inside the finished product storage box. A fixing block is fixed to the middle of the outer side of the material extraction tube. A rotating plate is hinged to one side of the outer side of the fixing block. A servo motor B is fixed to the middle of the outer side of the support base. A rope winding shaft is fixed to the output end of the servo motor B. A connecting rope is wound around the outer side of the rope winding shaft. The end of the connecting rope away from the rope winding shaft is fixed to the rotating plate.

[0012] The outer bottom of the support base is fixed with multiple sets of fixing bolts.

[0013] The ratchet module is provided with a corrugated sleeve on the outside.

[0014] The inside of the stirring tank is electroplated with a silicon nitride coating.

[0015] Compared with the prior art, the beneficial effects of the present invention are: through the coordinated cooperation of auger A, rotating shaft and stirring rod, auger A can transport the material at the bottom of the mixing drum upward through the fixed cylinder to achieve material turning, which effectively reduces the problem of material particle size stratification caused by simple stirring, so that the tailings sand and binder are fully mixed, improving the uniformity and strength of the filling slurry, ensuring the filling quality, while reducing the amount of binder used and reducing the filling cost.

[0016] Multiple sets of fixing bolts allow the support base to be installed on vehicles in the mining area, facilitating the transportation of the equipment. A corrugated sleeve is used to cover the outside of the ratchet module. The inside of the mixing drum is a high-dust environment, which can cause damage to the ratchet module with long-term use. Therefore, the corrugated sleeve protects the ratchet module and further increases its service life. The silicon nitride coating inside the mixing drum reduces material adhesion and drum wall wear, ensuring long-term stable operation of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the support base of the present invention; Figure 2 This is a schematic diagram of the tailings storage box of the present invention; Figure 3 This is the present invention. Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram of the structure of the servo motor A of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged view of point B; Figure 6 This is a schematic diagram of the material extraction tube of the present invention.

[0019] In the diagram: 1. Support base; 2. Mixing drum; 3. Tailings feed pipe; 4. Tailings storage box; 5. Cementitious agent storage box; 6. Cementitious agent feed pipe; 7. Servo motor A; 8. Support cylinder; 9. Ventilation slot; 10. Rotating shaft; 11. Mixing rod; 12. Screwdriver A; 13. Ratchet module; 14. Screwdriver B; 15. Fixed cylinder; 16. Finished product storage box; 17. Guide slope; 18. Electric telescopic rod; 19. Extraction pipe; 20. Fixed block; 21. Rotating plate; 22. Rope winding shaft; 23. Servo motor B; 24. Connecting rope; 25. Fixing bolt; 26. Corrugated sleeve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Example 1 like Figure 1 - Figure 6As shown, a tailings cemented backfilling device for mines includes a support base 1. A mixing drum 2 is fixedly connected to the middle of the inner side of the support base 1. A tailings feed pipe 3 is fixedly connected to one side of the outer side of the mixing drum 2. A mixing assembly is provided inside the mixing drum 2. The mixing assembly includes a servo motor A7, a rotating shaft 10, a mixing rod 11, an auger A12, a ratchet module 13, and an auger B14. The servo motor A7 is fixedly connected to the top outer side of the mixing drum 2. The rotating shaft 10 is fixedly connected to the output end of the servo motor A7. The rotating shaft 10 rotates inside the mixing drum 2. The mixing rod 11 is fixedly connected to the top outer side of the rotating shaft 10 near the tailings feed pipe 3. The auger A12 is fixedly connected to the middle outer side of the rotating shaft 10. The ratchet module 13 is fixedly connected to the outer side of the rotating shaft 10 away from the servo motor A7. The auger B14 is fixedly connected to the outer side of the ratchet module 13.

[0025] The support base 1 provides a stable installation foundation for the entire equipment, preventing shaking during operation and ensuring stability during mixing, discharging, and pumping, thus improving the reliability of the equipment. The mixing drum 2 provides a closed space for mixing tailings and binder, reducing material splashing and dust leakage, while also providing a stable working environment for each mixing component, ensuring orderly mixing operations. The tailings feed pipe 3 accurately conveys tailings, smoothly transporting the tailings from the tailings storage box 4 into the mixing drum 2, reducing tailings leakage and accumulation. The servo motor A7 provides stable power to the mixing components, enabling the rotating shaft 10 to rotate smoothly, providing power support for mixing and turning operations, with stable power output and adjustable speed according to operational needs. The rotating shaft 10, as the core transmission component, drives the mixing rod 11, auger A12, and ratchet module 13 to operate synchronously, realizing the combined control of mixing, turning, and discharging. The structure is relatively simple, improving the coordination of equipment operation. The stirring rod 11 is located near the tailings feed pipe 3, which can initially stir the tailings and binder that have just entered the mixing drum 2, reducing material accumulation at the feed inlet and providing a foundation for subsequent thorough mixing. The auger A12 can transport the material at the bottom of the mixing drum 2 upwards, realizing the material turning operation, solving the problem of material particle stratification caused by simple stirring, improving the uniformity of mixing, and accelerating the mixing speed to improve work efficiency. The ratchet module 13 realizes the unidirectional rotation control of the auger B14, which can flexibly switch the stationary (closed) and rotating (discharging) states of the auger B14, ensuring that it is closed during stirring and smooth during discharging, realizing the orderly connection between stirring and discharging. When there is no external force, the auger B14 is tightly connected to the mixing drum 2, which can seal the bottom of the mixing drum 2 to prevent material leakage. When rotating, it can smoothly discharge the stirred material, avoiding material blockage and improving the discharge efficiency. The mixing assembly also includes a tailings storage tank 4, a binder storage tank 5, and a binder feed pipe 6. The tailings storage tank 4 is fixedly connected to the outer end of the tailings feed pipe 3 away from the mixing drum 2. The binder storage tank 5 is fixedly connected to the outer side of the tailings storage tank 4. The binder feed pipe 6 is connected to the bottom of the outer side of the binder storage tank 5. The end of the binder feed pipe 6 away from the binder storage tank 5 is fixedly connected to the mixing drum 2. The mixing drum 2 is connected to the binder feed pipe 6. A support cylinder 8 is fixedly connected to the top of the outer side of the mixing drum 2. Multiple ventilation slots 9 are opened on the outside of the support cylinder 8.

[0026] A fixed cylinder 15 is fixedly connected to the middle of the inner side of the mixing drum 2. The auger A12 rotates inside the fixed cylinder 15. The fixed cylinder 15 is tightly fitted to the bottom of the inner side of the mixing drum 2. A finished product storage box 16 is fixedly connected to the bottom of the inner side of the support base 1. A guide slope 17 is provided on the bottom of the inner side of the finished product storage box 16.

[0027] An electric telescopic rod 18 is fixedly connected to one side of the finished product storage box 16. A material extraction tube 19 is hinged to the telescopic end of the electric telescopic rod 18. One end of the material extraction tube 19 is located inside the finished product storage box 16. A fixing block 20 is fixedly connected to the middle of the outer side of the material extraction tube 19. A rotating plate 21 is hinged to one side of the outer side of the fixing block 20. A servo motor B23 is fixedly connected to the middle of the outer side of the support base 1. A rope winding shaft 22 is fixedly connected to the output end of the servo motor B23. A connecting rope 24 is wound around the outer side of the rope winding shaft 22. The end of the connecting rope 24 away from the rope winding shaft 22 is fixedly connected to the rotating plate 21.

[0028] The electric telescopic rod 18 can extend and retract flexibly, driving the extraction pipe 19 to adjust its angle to adapt to different pumping heights and filling scenarios, improving the adaptability of the equipment. It eliminates the need for manual adjustment of the extraction pipe 19 angle, reducing labor intensity. The extraction pipe 19 is used to pump the slurry from the finished product storage box 16 to the filling area, achieving efficient transportation of the filling slurry and meeting the filling needs of different scenarios such as underground goaf areas in mines. The fixed block 20 is hinged to the rotating plate 21, providing a flexible support point for the extraction pipe 19, and working with the electric telescopic rod 18 to achieve flexible adjustment of the extraction pipe 19 angle. The servo motor B23 drives the rope winding shaft 22 to rotate, adjusting the angle of the rotating plate 21 by winding or releasing the connecting rope 24, thereby providing stable support for the extraction pipe 19, preventing shaking during pumping, reducing slurry leakage, reducing wear on the extraction pipe 19, extending its service life, and ensuring a stable and efficient extraction process.

[0029] During operation, the device is first connected to an external power supply, and then to an external control module. The electronic components in this technical solution are driven by the cooperation of the external control module and the power supply. The external control module is existing technology and should be well known to those skilled in the art, so it will not be described in detail in this technical solution.

[0030] Before starting the device, the tailings are loaded into the tailings storage tank 4 and the binder is loaded into the binder storage tank 5. When stirring is required, the tailings in the tailings storage tank 4 are transported to the inside of the mixing drum 2 through the tailings feed pipe 3, and at the same time, the binder in the binder storage tank 5 is transported to the inside of the mixing drum 2 through the binder feed pipe 6, so as to realize the synchronous feeding of tailings and binder, which facilitates subsequent mixing. The servo motor A7 is started, and the output end of the servo motor A7 drives the rotating shaft 10 to rotate smoothly inside the mixing drum 2. The support cylinder 8 plays a role in fixing and protecting the servo motor A7, and the ventilation slot 9 realizes ventilation and heat dissipation inside the support cylinder 8, reducing the possibility of overheating and damage to the servo motor A7. When the rotating shaft 10 rotates, it drives the stirring rod 11 on its outer top to rotate synchronously. The stirring rod 11 performs preliminary stirring on the tailings and binder that have just entered the mixing drum 2, reducing the accumulation of materials at the feed inlet. At the same time, the rotating shaft 10 drives the auger A12 in its middle to rotate inside the fixed drum 15. Since the fixed drum 15 is in close contact with the bottom of the inner side of the mixing drum 2, the auger A12 transports the material at the bottom of the mixing drum 2 upward, realizing the material turning operation and reducing the phenomenon of particle size stratification. The material after turning falls to the upper part of the mixing drum 2 and is further stirred by the stirring rod 11 to achieve a full and uniform mixing of tailings and binder.

[0031] The function of the ratchet module 13 is that when the two materials enter the mixing drum 2, the rotation direction of the servo motor A7 can enable the auger A12 to transport the material at the bottom of the mixing drum 2 upward. However, the inherent characteristics of the ratchet module 13 mean that it can only rotate in one direction. Therefore, the auger B14 remains stationary at this time. After the material is turned over and mixed, the servo motor A7 is reversed. At this time, the rotating shaft 10 drives the ratchet module 13 and the auger B14 to rotate synchronously and discharge the material.

[0032] The well-mixed filling slurry falls into the finished product storage tank 16 at the bottom inner side of the support base 1 under the action of gravity. The guide slope 17 at the bottom inner side of the finished product storage tank 16 guides the slurry to gather at one end of the extraction pipe 19, reducing slurry accumulation.

[0033] Subsequently, the extraction pipe 19 pumps the filling slurry from the finished product storage box 16 to the filling area. During the pumping process, the angle of the extraction pipe 19 can be adjusted by extending and retracting the electric telescopic rod 18 to adapt to different pumping and filling requirements. The fixing block 20 at the middle of the outer side of the extraction pipe 19 is hinged to the rotating plate 21. The servo motor B23 at the middle of the outer side of the support base 1 is started, driving the rope winding shaft 22 to rotate. The rope winding shaft 22 winds or releases the connecting rope 24, thereby adjusting the angle of the rotating plate 21, which provides stable support for the extraction pipe 19, reduces the shaking of the extraction pipe 19 during pumping, and ensures a stable and smooth extraction process.

[0034] Through the coordinated operation of the auger A12, the rotating shaft 10, and the stirring rod 11, the auger A12 can transport the material at the bottom of the mixing drum 2 upward through the fixed cylinder 15 to achieve material turning, which effectively reduces the problem of material particle size stratification caused by simple stirring, and makes the tailings sand and binder fully mixed, improving the uniformity and strength of the filling slurry, ensuring the filling quality, while reducing the amount of binder used and reducing the filling cost.

[0035] Example 2 like Figure 5 - Figure 6 As shown, the support base 1 has multiple sets of fixing bolts 25 fixed to its outer bottom. The ratchet module 13 has a corrugated sleeve 26 on its outer side. The mixing drum 2 has a silicon nitride coating electroplated inside. The multiple sets of fixing bolts 25 allow the support base 1 to be installed on vehicles in the mining area, facilitating the transportation of the device. The corrugated sleeve 26 is used to cover the ratchet module 13. The inside of the mixing drum 2 is a high-dust environment, which can damage the ratchet module 13 with long-term use. Therefore, the corrugated sleeve 26 protects the ratchet module 13, further increasing its service life. The silicon nitride coating inside the mixing drum 2 reduces material adhesion and drum wall wear, ensuring long-term stable operation of the equipment. The corrugated sleeve 26 has a certain degree of flexibility, which can compensate for the slight displacement of the connection between the ratchet module 13 and the auger B14, making the connection tight and improving the stability and reliability of the equipment operation. The entire working process achieves uniform mixing of tailings and binder, smooth discharge and stable extraction, and efficiently completes the tailings cementing and backfilling operation in the mine.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tailings cemented backfilling device for mines, characterized in that: Includes a support base (1), with a mixing drum (2) fixedly connected to the middle of the inner side of the support base (1). A tailings feed pipe (3) is fixedly connected to one side of the outer side of the mixing drum (2). A mixing assembly is provided inside the mixing drum (2). The mixing assembly is equipped with a servo motor A (7), a rotating shaft (10), a mixing rod (11), an auger A (12), a ratchet module (13), and an auger B (14). A servo motor A (7) is fixedly connected to the top of the outer side of the mixing drum (2). The output end of the servo motor A (7) is fixedly connected to a rotating shaft (10), which rotates inside the mixing drum (2). A stirring rod (11) is fixedly connected to the top of the outer side of the rotating shaft (10) near the tailings feed pipe (3). An auger A (12) is fixedly connected to the middle of the outer side of the rotating shaft (10). A ratchet module (13) is fixedly connected to the outer side of the rotating shaft (10) away from the servo motor A (7). An auger B (14) is fixedly connected to the outer side of the ratchet module (13).

2. The tailings cemented backfilling equipment according to claim 1, characterized in that: The mixing assembly also includes a tailings storage tank (4), a binder storage tank (5), and a binder feed pipe (6). The tailings storage tank (4) is fixedly connected to the outer end of the tailings feed pipe (3) away from the mixing drum (2). The binder storage tank (5) is fixedly connected to the outer side of the tailings storage tank (4). The binder feed pipe (6) is connected to the bottom of the outer side of the binder storage tank (5). The end of the binder feed pipe (6) away from the binder storage tank (5) is fixedly connected to the mixing drum (2). The mixing drum (2) is connected to the binder feed pipe (6).

3. The tailings cemented backfilling equipment according to claim 2, characterized in that: A support cylinder (8) is fixed to the top of the outer side of the mixing cylinder (2), and multiple ventilation slots (9) are opened on the outside of the support cylinder (8).

4. The tailings cemented backfilling equipment according to claim 3, characterized in that: A fixed cylinder (15) is fixedly connected to the middle of the inner side of the stirring cylinder (2), and the auger A (12) rotates inside the fixed cylinder (15).

5. A tailings cemented backfilling device according to claim 4, characterized in that: The fixed cylinder (15) is in close contact with the bottom of the inner side of the stirring cylinder (2).

6. The tailings cemented backfilling equipment according to claim 1, characterized in that: The bottom inner side of the support base (1) is fixed with a finished product storage box (16), and a guide slope (17) is provided on the bottom inner side of the finished product storage box (16).

7. A tailings cemented backfilling device according to claim 6, characterized in that: An electric telescopic rod (18) is fixedly connected to one side of the finished product storage box (16). A material extraction tube (19) is hinged to the telescopic end of the electric telescopic rod (18). One end of the material extraction tube (19) is located inside the finished product storage box (16). A fixing block (20) is fixedly connected to the middle of the outer side of the material extraction tube (19). A rotating plate (21) is hinged to one side of the outer side of the fixing block (20). A servo motor B (23) is fixedly connected to the middle of the outer side of the support base (1). A rope winding shaft (22) is fixedly connected to the output end of the servo motor B (23). A connecting rope (24) is wound around the outer side of the rope winding shaft (22). The end of the connecting rope (24) away from the rope winding shaft (22) is fixedly connected to the rotating plate (21).

8. A tailings cemented backfilling device according to claim 1, characterized in that: The support base (1) has multiple sets of fixing bolts (25) fixed to the bottom of the outer side.

9. A tailings cemented backfilling device according to claim 1, characterized in that: A corrugated sleeve (26) is provided on the outside of the ratchet module (13).

10. A tailings cemented backfilling device according to claim 1, characterized in that: The stirring tank (2) is electroplated with a silicon nitride coating.

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