An ecological restoration backfilling device for a mine goaf

Abstract

The utility model relates to mine backfilling device technical field discloses a kind of ecological restoration backfilling devices of mine goaf, including frame, the middle part of one side of frame is fixedly connected with traction head, driven wheel is symmetrically rotationally connected with the both sides of frame, the middle part of frame is fixedly connected with mixing tank, mixing tank top is fixedly connected with inlet cavity mouth, wherein, crushing piece is arranged in inlet cavity mouth, stirring piece is arranged in mixing tank, crushing piece and stirring piece are interlinked, and synchronous processing of crushing and homogenization is carried out.The utility model passes through tractor frame design, device can be moved in goaf and is operated, removes long-distance conveying pipeline laying, solve the problem of cost surge caused by traditional fixed equipment due to mine tunnel extension, stirring piece and crushing piece can also be synchronously controlled by single motor drive driving shaft, realize the synchronous operation of crushing and homogenization, reduce energy consumption and equipment complexity.

Description

Technical Field

[0001] This utility model relates to the technical field of mine backfilling devices, and in particular to an ecological restoration backfilling device for mine goaf areas. Background Technology

[0002] Mining-induced voids disrupt the original stress balance of the strata, causing the overlying strata to lose support. This stress redistribution leads to rock mass deformation and fracture. The chain reaction propagates upwards to the surface, forming subsidence, cracks, and even collapses (such as subsidence pits and ground fissures). Backfilling of mined-out areas is a core component of the entire life cycle management of mines, and its necessity stems from the systemic harm that mined-out areas pose to geological safety, the ecological environment, resource utilization, and social development.

[0003] Coal gangue / slag / tailings is the most common, economical, and valuable option for resource utilization. Solid waste generated during mining (such as coal gangue, metal tailings, and waste rock) is crushed, screened, and processed before being backfilled into mined-out areas. This achieves "waste treatment with waste," reducing land occupation and pollution risks associated with surface stockpiling. The degree of crushing (particle size requirement) of the backfill material is a key parameter in the backfilling process, directly affecting transport feasibility, backfill density, strength development, and cost control.

[0004] The traditional method involves crushing the material with crushing equipment and then using a conveying system to transport the crushed material to the backfilling area. However, this method becomes too costly with increasing complexity and length of the mine shaft, resulting in excessive costs for the laying and conveying equipment.

[0005] Therefore, in order to reduce the installation cost of conveying equipment and to quickly crush solid waste in the mine shaft for easy backfilling, an ecological restoration backfilling device for mining goaf areas is proposed. Utility Model Content

[0006] To address the technical problem that traditional restoration methods become excessively costly as the complexity of mine tunnels increases, and that the construction of conveying equipment is too complicated, resulting in low overall restoration efficiency, this utility model provides an ecological restoration backfilling device for mining goaf areas.

[0007] This utility model is achieved by the following technical solution: an ecological restoration backfilling device for mining goaf areas, including a frame, a traction head fixedly connected to the middle of one side of the frame, driven wheels symmetrically rotatably connected to both sides of the frame, a mixing tank fixedly connected to the middle of the frame, and an inlet port fixedly connected to the top of the mixing tank.

[0008] The feed chamber is equipped with a crushing component, and the mixing tank is equipped with an agitator. The crushing component and the agitator work together to perform crushing and homogenization simultaneously.

[0009] As a further improvement to the above solution, the crushing component includes a bracket fixedly connected to one side of the top of the mixing tank. A motor is fixedly connected to the top of the bracket, and a drive shaft is coaxially fixedly connected to both ends of the motor output shaft. A drive gear is coaxially fixedly connected to the outer end of one drive shaft.

[0010] As a further improvement to the above scheme, the crushing component also includes two driven rollers that are symmetrically rotatably connected to the feed chamber. The outer walls of the two driven rollers are coaxially fixedly connected to crushing blades inside the feed chamber. Blades are provided on the outside of the two crushing blades, and the blades of the two crushing blades are staggered.

[0011] As a further improvement to the above scheme, both driven rollers are coaxially fixedly connected to driven gears outside the feed chamber, and the inner sides of both driven gears mesh with the driving gear.

[0012] As a further improvement to the above solution, the agitator includes a ring-shaped protrusion coaxially fixedly connected to the top of the inner wall of the mixing tank, a ring-shaped slider rotatably connected to the outer wall of the ring-shaped protrusion, and an external gear coaxially fixedly connected to the outer wall of the ring-shaped slider.

[0013] As a further improvement to the above scheme, a vertical opening is provided at the top of the mixing tank, a base plate is fixedly connected to the bottom of the mixing tank, a driven disc is rotatably connected to the base plate, a side gear is coaxially fixedly connected to the inner side of the driven disc, the side gear meshes with the external gear, a transmission belt is sleeved on the driven disc, a driving disc is sleeved on the other end of the transmission belt, and the driving disc is coaxially fixedly connected to the other end of the driving shaft.

[0014] As a further improvement to the above scheme, several stirring rollers are uniformly and fixedly connected to the bottom end of the circulating slider. Each stirring roller moves inside the mixing tank. An output pipeline is connected to the middle of the bottom end of the mixing tank, and an electric valve is installed at the output pipeline.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (i) This utility model, through the design of the tractor frame, allows the device to move and operate within the goaf area, eliminating the need for long-distance pipeline laying and solving the problem of soaring costs caused by the extension of mine tunnels for traditional fixed equipment.

[0017] (ii) This utility model achieves synchronous operation of crushing and homogenization by using a single motor to drive the active shaft to synchronously control the crushing component (gear meshing transmission) and the agitating component (belt transmission + gear transmission), thereby reducing energy consumption and equipment complexity.

[0018] (III) This utility model ensures that solid waste is sheared and crushed in both directions by using the staggered blade design of the double driven rollers and the forced meshing transmission, thereby avoiding material jamming and improving particle size uniformity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a backfilling device for ecological restoration of mining goaf areas proposed in this utility model.

[0020] Figure 2 This utility model Figure 1 A top-view diagram;

[0021] Figure 3 This is a schematic diagram of the transmission connection structure of the crushing component of this utility model;

[0022] Figure 4 This is a structural diagram showing the connection between the crushing component and the agitating component of this utility model.

[0023] Explanation of key symbols:

[0024] 1. Chassis; 11. Traction head; 12. Driven wheel; 2. Mixing tank; 21. Feed inlet; 22. Driven roller; 23. Crushing blade; 24. Support; 25. Motor; 26. Drive shaft; 27. Drive gear; 28. Drive disc; 29. ​​Movable port; 30. Base plate; 31. Driven disc; 32. Side gear; 33. Drive belt; 34. Circulating protrusion; 35. Circulating slider; 36. External gear; 37. Agitator roller; 38. Driven gear. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figures 1-4 The embodiment of this invention provides an ecological restoration backfilling device for mining goaf areas, which includes a frame 1, a traction head 11 fixedly connected to the middle of one side of the frame 1, driven wheels 12 symmetrically rotatably connected to both sides of the frame 1, a mixing tank 2 fixedly connected to the middle of the frame 1, and a material inlet 21 fixedly connected to the top of the mixing tank 2.

[0028] The feed inlet 21 is equipped with a crushing component, and the mixing tank 2 is equipped with an agitator. The crushing component and the agitator work together to perform crushing and homogenization simultaneously.

[0029] Furthermore, the traction head 11 can be connected to a traction device for driving the chassis 1 to move within the goaf area of ​​the mine and for backfilling and repair.

[0030] The crushing component includes a bracket 24 fixedly connected to one side of the top of the mixing tank 2. A motor 25 is fixedly connected to the top of the bracket 24. Both ends of the output shaft of the motor 25 are coaxially fixedly connected to a drive shaft 26. A drive gear 27 is coaxially fixedly connected to the outer end of one drive shaft 26.

[0031] The crushing component also includes two driven rollers 22 that are symmetrically rotatably connected to the feed chamber 21. The outer walls of the two driven rollers 22 are coaxially fixedly connected to crushing blades 23 inside the feed chamber 21. The two crushing blades 23 are provided with blades on their outer sides, and the blades of the two crushing blades 23 are staggered.

[0032] Specifically, the misalignment angle of the crushing blade 23 is 15° to 30°.

[0033] Two driven rollers 22 are located outside the feed chamber 21 and are coaxially fixedly connected to driven gears 38. The inner sides of the two driven gears 38 are meshed with the driving gear 27.

[0034] Furthermore, the two driven gears 38 are the same size.

[0035] The agitator includes a ring-shaped protrusion 34 coaxially fixedly connected to the top of the inner wall of the mixing tank 2, a ring-shaped slider 35 rotatably connected to the outer wall of the ring-shaped protrusion 34, and an external gear 36 coaxially fixedly connected to the outer wall of the ring-shaped slider 35.

[0036] Specifically, the annular protrusion 34 is located on the outer side of the bottom of the entire feed chamber 21 to prevent falling debris from directly contacting the annular protrusion 34, the annular slider 35, and the external gear 36. Solid waste can be sourced locally and mixed in the mixing tank 2. During mixing, lime / cement / alkaline materials (used to neutralize acidic mine water (AMD), stabilize heavy metal pollutants, and improve the chemical properties of the backfill substrate) can be added from the feed chamber 21. Organic amendments (straw, green manure, organic fertilizer, sludge [requires strict treatment]) are mainly used for soil improvement after topsoil covering, increasing organic matter, improving soil structure, and creating conditions for vegetation restoration. Generally, it is not directly used as the main backfill material, and the fit gap between the annular slider 35 and the annular protrusion 34 is 1-2 mm.

[0037] The mixing tank 2 has a vertically extending opening 29 at the top. The bottom of the mixing tank 2 is fixedly connected to a base plate 30. The base plate 30 is rotatably connected to a driven disc 31. A side gear 32 is coaxially fixedly connected to the inner side of the driven disc 31. The side gear 32 meshes with an external gear 36. A transmission belt 33 is sleeved on the driven disc 31. A drive disc 28 is sleeved on the other end of the transmission belt 33. The drive disc 28 is coaxially fixedly connected to the other end of the drive shaft 26.

[0038] Furthermore, both the driving disc 28 and the driven disc 31 have grooves on their outer walls, and the transmission belt 33 has protrusions on its inner wall. The protrusions are connected to the grooves, and the driving disc 28 and the driven disc 31 have the same dimensions.

[0039] Several stirring rollers 37 are evenly fixedly connected to the bottom end of the ring-moving slider 35. Each stirring roller 37 moves inside the mixing tank 2. An output pipeline is connected to the middle of the bottom end of the mixing tank 2, and an electric valve is installed at the output pipeline.

[0040] The implementation principle of the ecological restoration and backfilling device for mining goaf areas in this embodiment is as follows:

[0041] By connecting the traction device to the traction head 11, the traction device can pull the frame 1 to move. As the frame 1 moves forward, solid waste can be gradually added to the feed inlet 21. Simultaneously, the motor 25 is started. Through the meshing of the drive gear 27 and two driven gears 38, the two crushing blades 23 rotate inward synchronously. The crushing blades 23 can crush the solid waste. The crushed material can then automatically enter the mixing tank 2.

[0042] When the motor 25 starts, the entire driven disc 28 and the transmission belt 33 can be driven by the drive shaft 26 to achieve the following of the entire driven disc 31. The circumferential slider 35 can rotate around the circumferential protrusion 34 by the meshing of the side gear 32 and the external gear 36, and simultaneously drive the multiple stirring rollers 37 fixedly connected to the bottom of the circumferential slider 35.

[0043] After being moved to the backfill area, the internal material can also be released from the closed state of the output pipeline through the electric valve, and the broken material can be input into the backfill area. The falling material can then be uniformly processed manually.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A mine goaf ecological restoration backfilling device, characterized in that, include: The frame (1) has a traction head (11) fixedly connected to the middle of one side of the frame (1), and driven wheels (12) are symmetrically rotatably connected to both sides of the frame (1). A mixing tank (2) is fixedly connected to the middle of the frame (1), and a feed inlet (21) is fixedly connected to the top of the mixing tank (2). Among them, the feed inlet (21) is equipped with a crushing component, and the mixing tank (2) is equipped with a stirring component. The crushing component and the stirring component are linked together to carry out crushing and homogenization simultaneously.

2. The ecological restoration backfilling device for a mine goaf according to claim 1, characterized in that, The crushing component includes a bracket (24) fixedly connected to one side of the top of the mixing tank (2). A motor (25) is fixedly connected to the top of the bracket (24). Both ends of the output shaft of the motor (25) are coaxially fixedly connected to a drive shaft (26). A drive gear (27) is coaxially fixedly connected to the outer end of one end of the drive shaft (26).

3. The ecological restoration backfilling device for a mine goaf according to claim 2, characterized in that, The crushing component also includes two driven rollers (22) symmetrically rotatably connected to the feed inlet (21). The outer walls of the two driven rollers (22) are coaxially fixedly connected to crushing blades (23) inside the feed inlet (21). The two crushing blades (23) are provided with blades on their outer surfaces, and the blades of the two crushing blades (23) are staggered.

4. The ecological restoration backfilling device for a mine goaf according to claim 3, characterized in that, Both driven rollers (22) are coaxially fixedly connected to driven gears (38) outside the feed chamber (21), and the inner sides of both driven gears (38) mesh with the driving gear (27).

5. The ecological restoration backfilling device for a mine goaf according to claim 1, characterized in that, The agitator includes a ring-shaped protrusion (34) coaxially fixedly connected to the top of the inner wall of the mixing tank (2), a ring-shaped slider (35) rotatably connected to the outer wall of the ring-shaped protrusion (34), and an external gear (36) coaxially fixedly connected to the outer wall of the ring-shaped slider (35).

6. The ecological restoration backfilling device for mining goaf areas as described in claim 5, characterized in that, The mixing tank (2) has a vertically extending opening (29) at the top. The bottom of the mixing tank (2) is fixedly connected to a base plate (30). The base plate (30) is rotatably connected to a driven plate (31). A side gear (32) is coaxially fixedly connected to the inner side of the driven plate (31). The side gear (32) meshes with an external gear (36). A transmission belt (33) is sleeved on the driven plate (31). A drive plate (28) is sleeved on the other end of the transmission belt (33). The drive plate (28) is coaxially fixedly connected to the other end of the drive shaft (26).

7. The ecological restoration backfilling device for a mine goaf according to claim 5, characterized in that, The bottom end of the circulating slider (35) is uniformly fixed with several stirring rollers (37), each stirring roller (37) moves inside the mixing tank (2), the bottom middle of the mixing tank (2) is connected to an output pipeline, and an electric valve is provided at the output pipeline.

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