Coal mine goaf filling treatment equipment

Abstract

The utility model discloses coal mine goaf filling treatment equipment which comprises a storage box, the storage box comprises side plates, a bottom plate and stand columns at corners, the side faces of the stand columns are provided with inserting grooves, each side plate is inserted into the inserting grooves of the two adjacent stand columns to be fixed, the middle of the bottom plate is hollowed out, and a slurry groove is connected below the hollowed-out position; a slurry outlet is formed in the bottom of the slurry tank; the stirring box is arranged on the side face of the storage box and is separated from the storage box through the side plate, a feeding opening is formed in the top of the stirring box, and a first stirrer is arranged in the stirring box; the supporting legs are used for supporting the bottom of the stirring box. The problems that in the prior art, when grouting and filling are conducted on a coal mine goaf, the slurry processing efficiency is low, the grouting speed is unstable and the like are solved, the storage box provides the slurry needed for filling, meanwhile, continuous processing and feeding of the stirring box are not affected, and the flow continuity of grouting and filling and the quality stability of the slurry can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine area treatment, in particular to a filling treatment device for coal mine goafs. Background Art

[0002] After coal mining, goafs will inevitably appear in the coal mine area. In order to prevent safety problems such as the collapse of coal mine goafs, it is necessary to timely fill and treat the goafs to reduce the harm caused by natural disasters such as earthquakes to the coal mine area.

[0003] At present, the common filling method for goafs is grouting filling. By injecting slurry to fill the structural vacancies formed by coal mining, the space of the goaf is generally large and has an inconsistent shape. Relying on manual stirring obviously cannot meet the demand for the amount of slurry. Therefore, special filling treatment equipment is needed to continuously provide slurry with a stable viscosity. Chinese Patent Publication No. CN209818104U, with the publication date of December 20, 2019, and the name of "A Coal Mine Goaf Treatment and Collapse Backfilling Pulp Making and Grouting System" discloses a pulp making and grouting system, including a cylinder body. The lower end of the cylinder body is connected with a support rod and a discharge port, equipped with a resistance wire and a controller, and uses a temperature sensor and a liquid level sensor to improve the stirring efficiency and backfilling accuracy. However, the cylinder body used in this device as a single container for stirring and temporarily storing slurry needs to discharge all the slurry in the cylinder body before adding materials for re-stirring. During the period of re-stirring and processing, slurry cannot be provided, which not only affects the grouting filling efficiency, but also due to the discontinuity of the grouting process, problems such as slurry stratification and caking may occur, affecting the filling effect. To avoid this situation, multiple devices may need to work simultaneously, and the use of multiple devices will result in problems such as large occupied space, difficult arrangement of pipeline positions, and chaotic cooperation between devices. Summary of the Utility Model

[0004] The utility model overcomes the problems existing in the prior art such as low slurry processing efficiency and unstable grouting rate during the grouting filling of coal mine goafs, and provides a filling treatment device for coal mine goafs. The slurry and water are mixed in proportion by a mixing tank, and the slurry is centrally stored temporarily by a storage tank. While the storage tank provides the slurry required for filling, it does not affect the continuous processing and feeding of the mixing tank, which can ensure the continuity of the grouting filling process and the quality stability of the slurry.

[0005] To achieve the above purpose, the utility model adopts the following scheme:

[0006] A filling treatment device for coal mine goafs, comprising:

[0007] Storage box, which includes side plates, a bottom plate and columns at the corners. Slots are provided on the sides of the columns, and each side plate is inserted into the slots of adjacent two columns for fixation. The middle of the bottom plate is hollowed out, and a mud trough is connected below the hollowed-out part. A mud outlet is provided at the bottom of the mud trough;

[0008] Mixing box, which is arranged on the side of the storage box and separated from the storage box by the side plate. A feed inlet is provided at the top of the mixing box, and a first stirrer is arranged inside;

[0009] Support legs, which are used to support the bottom of the mixing box.

[0010] Preferably, the bottom plate adopts a funnel-shaped structure, and the mud trough is a cylindrical groove and is connected to the bottom of the funnel-shaped structure.

[0011] Preferably, a second stirrer is arranged in the mud trough. The second stirrer includes a second motor and a second stirring shaft with stirring blades. The second motor is installed on the outer side of the bottom of the mud trough, and the fixed end of the second stirring shaft is connected to the output shaft of the second motor, and the free end vertically penetrates into the mud trough upward.

[0012] Preferably, a limiting rod with round holes is horizontally arranged in the mud trough, and the free end of the second stirring shaft passes through the round holes.

[0013] Preferably, the first stirrer includes a first motor and a first stirring shaft connected to the output shaft of the first motor. The first motor is installed on the outer wall of the mixing box, the first stirring shaft crosses from one side of the mixing box to the opposite side, and stirring blades are arranged on the first stirring shaft.

[0014] Preferably, the bottom of the mixing box is a concave arc-shaped plate, and the arc-shaped plate slopes downward towards the side plate direction.

[0015] Preferably, a pull handle is arranged in the middle of the top of the side plate, and positioning blocks are arranged at both ends.

[0016] Preferably, a support block is connected to the lower end of the support leg, and a threaded fit structure for adjusting the height is arranged between the support leg and the support block.

[0017] The utility model has at least the following beneficial effects: (1) A storage tank can be equipped with multiple mixing tanks. When the storage tank continuously outputs mud, the mixing tanks can independently complete the mixing of raw materials, and the mixing and output of mud can be carried out simultaneously, improving the grouting efficiency; (2) After the side plate is opened, the mud automatically flows from the mixing tank into the storage tank under the action of gravity and converges in the mud tank, without the need to use equipment such as mud pumps for suction and transfer, and the operation is simple, convenient and efficient; (3) By setting the bottom plate of the storage tank in a funnel-shaped structure and arranging a second stirrer in the mud tank, mud sedimentation and stratification are avoided, which is beneficial to fully drain the internal mud; (4) The bottom of the mixing tank adopts an arc-shaped plate, which cooperates with the first stirrer arranged horizontally. The stirring blades of the first stirrer deflect the mud towards the storage tank direction, and the mud in the mixing tank can be quickly transferred to the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic diagram of the overall structure of a coal mine goaf filling and treatment device of the present utility model;

[0019] Figure 2 FIG. is a schematic diagram of the structure of a mixing tank of the present utility model;

[0020] Figure 3 FIG. is a schematic diagram of the structure of a storage tank of the present utility model;

[0021] Figure 4 FIG. is a schematic diagram of the structure of a column of the present utility model;

[0022] Figure 5 FIG. is a schematic diagram of the structure of a side plate of the present utility model.

[0023] In the figure: side plate 1, bottom plate 2, column 3, mud tank 4, mud outlet 5, mixing tank 6, support leg 7, first motor 8, first stirring shaft 9, second motor 10, second stirring shaft 11, limiting rod 12, pulling handle 13, clamping block 14, support block 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further detailed description of the present utility model is provided in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description in the specification.

[0025] It should be understood that the terms such as "having", "including" and "comprising" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0026] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the materials, unless otherwise specified, can all be obtained through commercial channels; in the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The orientation or positional relationship indicated by the terms "horizontal", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] As Figures 1-5 shown, the coal mine goaf filling and treatment equipment provided by the present invention includes:

[0028] A storage tank, which includes side plates 1, a bottom plate 2 and columns 3 at the corners. Slots are provided on the sides of the columns 3, and each side plate 1 is inserted into the slots of two adjacent columns 3 for fixation. The middle of the bottom plate 2 is hollowed out, and a mud tank 4 is connected below the hollowed-out part. A mud outlet 5 is provided at the bottom of the mud tank 4; the storage tank is used to collect and temporarily store the well-stirred finished mud. The shape of the storage tank is square. As Figure 4 shown, the horizontal cross-section of the column 3 at the corner is L-shaped, the slots on the side extend vertically and penetrate at the upper end. The two ends of the side plate 1 are inserted and limited in the slots. The mud tank 4 collects the mud in the storage tank and discharges it through the mud outlet 5. A valve is provided at the position of the mud outlet 5. When using the equipment, the position is adjusted in advance so that the mud outlet 5 is located above the gap of the goaf or a grouting pipeline is connected to the area to be filled inside the coal mine goaf.

[0029] A mixing tank 6, which is arranged on the side of the storage tank and separated from the storage tank by the side plate 1. A feed inlet is provided at the top of the mixing tank 6, and a first stirrer is arranged inside; the number of mixing tanks 6 is two or four, symmetrically arranged on both sides or around the storage tank. The bottom of the mixing tank 6 is higher than the bottom plate 2 of the storage tank. Each mixing tank 6 shares a side plate 1 with the storage tank. When the side plate 1 is inserted, the two boxes are separated into independent intervals. When the side plate 1 is taken out, the two boxes are interconnected.

[0030] Support legs 7, which are used to support the bottom of the mixing tank 6. The support legs 7 support the middle or corners of the bottom of the mixing tank 6, providing a stable support effect with a relatively wide span, lifting the mud outlet 5 off the ground for connecting the grouting pipeline. As Figure 2 shown, transverse rods can also be arranged between the support legs 7 to ensure the stability of the support structure.

[0031] When using this equipment, set up the equipment at the working position, which is set directly above or adjacent to the gob area of the coal mine. Connect and arrange a grouting pipeline of appropriate size and length at the mud outlet 5. After confirming that the side plate 1 has been inserted into the slot, add the mud-water raw materials into the feeding port of the mixing tank 6 according to the required ratio. The water-solid ratio of the mud-water raw materials is generally between 1:1 and 1:2, and common ratios are 1:1.4 or 1:1.6. The solid component is usually finely crushed mud powder ash. A small amount of mud remaining in the slot will not affect the insertion of the side plate 1. Start the first stirrer to evenly mix the mud and water into mud. Then pull out the corresponding side plate 1. The mud flows naturally from the mixing tank 6 to the storage tank under the action of gravity and gathers in the mud trough 4. Use the grouting pipeline to guide the mud to the position that needs to be filled. After the mud in the mixing tank 6 is discharged into the storage tank, insert the side plate 1 into the slot, add materials to the feeding port again for stirring, and repeat the above process to continuously input mud into the gob area of the coal mine to complete the filling task.

[0032] When using this equipment for gob area filling treatment in coal mines, one storage tank can be equipped with multiple mixing tanks 6. When the storage tank continuously outputs mud, the mixing tanks 6 can independently complete the mixing of raw materials, and the stirring and output of mud can be carried out simultaneously, improving the grouting efficiency; after opening the side plate 1, the mud automatically flows from the mixing tank 6 into the storage tank under the action of gravity and gathers in the mud trough 4, without the need to use equipment such as mud pumps for suction and transfer, and the operation is simple, convenient and efficient.

[0033] In another technical solution, as Figure 2 and Figure 3 shown, the bottom plate 2 adopts a funnel-shaped structure, and the mud trough 4 is a cylindrical groove and is connected to the bottom of the funnel-shaped structure. The funnel-shaped structure is an inverted frustum of a pyramid shape, which shrinks towards the bottom and is connected to the mud trough 4, ensuring that the mud in the storage tank can all fall into the mud trough 4 and avoiding the situation where the mud at the corners cannot be completely discharged due to sedimentation.

[0034] As Figure 3As shown, a second stirrer is provided in the mud tank 4. The second stirrer includes a second motor 10 and a second stirring shaft 11 with stirring blades. The second motor 10 is installed on the outer side of the bottom of the mud tank 4. The fixed end of the second stirring shaft 11 is connected to the output shaft of the second motor 10, and the free end vertically penetrates upward into the mud tank 4. Multiple second stirrers can be provided, and their second stirring shafts 11 are arranged vertically upward, and the upper ends can penetrate out of the mud tank 4 and enter the storage tank for a certain distance. At the initial startup of the equipment, some raw materials to be processed can be added to the storage tank, and the second stirrer can be started for the mixing and processing of the mud. The second stirrer and the first stirrer work simultaneously to improve the initial pulp-making efficiency of the equipment. Before the mud is discharged from the mud outlet 5, it will surely pass through the stirring of the second stirrer. Therefore, the discharged mud can always be maintained within the expected viscosity range, making the filling effect better. By providing the storage tank bottom plate 2 with a funnel-shaped structure and arranging the second stirrer in the mud tank 4, mud sedimentation and stratification can be avoided, which is beneficial to fully drain the internal mud.

[0035] A limiting rod 12 with round holes is horizontally arranged in the mud tank 4, and the free end of the second stirring shaft 11 passes through the round holes. When the second stirring shaft 11 rotates in the round holes, it is restricted by the limiting rod 12 and will not shift or shake, making the second stirrer work more stably and reliably.

[0036] In another technical solution, as Figure 2 shown, the first stirrer includes a first motor 8 and a first stirring shaft 9 connected to its output shaft. The first motor 8 is installed on the outer wall of the stirring tank 6. The first stirring shaft 9 crosses from one side of the stirring tank 6 to the opposite side, and stirring blades are arranged on the first stirring shaft 9. The first stirring shaft 9 is parallel to the corresponding side plate 1 and passes through both sides of the stirring tank 6 at both ends, and is arranged near the bottom of the stirring tank 6 to provide a better stirring effect.

[0037] The bottom of the stirring tank 6 is a concave arc-shaped plate, and the arc-shaped plate slopes downward toward the side plate 1. The radian design of the arc-shaped plate enables it to have a higher degree of cooperation with the first stirrer, reducing the stirring dead angle at the bottom of the stirring tank 6 and achieving a better stirring effect. The bottom of the stirring tank 6 adopts an arc-shaped plate, which is combined with the horizontally arranged first stirrer. By controlling the rotation direction of the first motor 8, the stirring blades of the first stirrer move from high to low along the surface of the arc-shaped plate, shifting the mud toward the storage tank direction, and the mud in the stirring tank 6 can be quickly transferred to the storage tank.

[0038] In another technical solution, as Figure 5 shown, a pull handle 13 is provided in the middle of the top of the side plate 1, and positioning blocks 14 are provided at both ends for positioning. Using the pull handle 13 makes it more convenient to remove or install the side plate 1. When inserting the side plate 1, when the positioning blocks 14 contact the top of the slot, it means that the side plate 1 is in place.

[0039] A support block 15 is connected to the lower end of the support leg 7, and a threaded engagement structure for height adjustment is provided between the support leg 7 and the support block 15. The threaded structure includes a stud on the support block 15 and a corresponding threaded hole in the lower part of the support leg 7. By controlling the degree of screwing in of the stud, the overall length of the support leg 7 and the support block 15 can be adjusted to adapt to ground surfaces with different flatness.

[0040] The number of devices and the processing scale described here are used to simplify the description of the present utility model. Applications, modifications, and variations of the present utility model will be apparent to those skilled in the art.

[0041] Although the embodiments of the present utility model have been disclosed as above, it is not limited to only the applications listed in the description and the embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details and the illustrated and described examples here.

Claims

1. Coal mine goaf filling and management equipment, characterized in that: include: The storage box comprises side panels, a bottom panel and columns at corners, wherein slots are arranged on the sides of the columns, and each of the side panels is inserted into the slots of two adjacent columns for fixing, the middle of the bottom panel is hollowed out, and a mud groove is connected below the hollowed-out part, and a mud outlet is arranged at the bottom of the mud groove; A stirring box, which is arranged on the side of the storage box and separated from the storage box by the side plate, wherein a feed inlet is arranged on the top of the stirring box and a first stirrer is arranged inside; The supporting legs are used to support the bottom of the mixing box.

2. The coal mine goaf filling and treatment equipment according to claim 1 is characterized in that: The bottom plate adopts a funnel-shaped structure, and the mud groove is a cylindrical groove connected to the bottom of the funnel-shaped structure.

3. The coal mine goaf filling and treatment equipment according to claim 1 is characterized in that: A second agitator is arranged in the mud tank, and the second agitator includes a second motor and a second agitation shaft with agitation blades. The second motor is installed on the outside of the bottom of the mud tank, the fixed end of the second agitation shaft is connected to the output shaft of the second motor, and the free end vertically penetrates into the mud tank upward.

4. The coal mine goaf filling and treatment equipment according to claim 3 is characterized in that: A limiting rod with a circular hole is transversely arranged in the mud tank, and the free end of the second stirring shaft passes through the circular hole.

5. The coal mine goaf filling and treatment equipment according to claim 1 is characterized in that: The first agitator includes a first motor and a first agitating shaft connected to its output shaft. The first motor is installed on the outer wall of the agitating box. The first agitating shaft crosses from one side of the agitating box to the opposite side. The first agitating shaft is provided with a stirring blade.

6. The coal mine goaf filling and treatment equipment according to claim 1, characterized in that: The bottom of the mixing box is a concave arc-shaped plate, and the arc-shaped plate is inclined and lowered toward the side plate.

7. The coal mine goaf filling and treatment equipment according to claim 1 is characterized in that: A pull-out handle is arranged in the middle of the top of the side plate, and blocks for positioning are arranged at both ends.

8. The coal mine goaf filling and treatment equipment according to claim 1, characterized in that: The lower end of the support leg is connected with a support block, and a threaded matching structure for adjusting the height is arranged between the support leg and the support block.

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