A coal mine goaf grouting operation with pulp device

Abstract

The application belongs to the technical field of goaf grouting and provides a slurry preparation device for coal mine goaf grouting operation, which comprises a support table supported by support legs to be lifted to a position, an annular stirring bin is placed on the top of the support table and is centrally located, a slurry outlet pipe is arranged at the bottom of the stirring bin and penetrates the support table and protrudes downward, a top plate is horizontally located directly above the stirring bin, a stand is arranged along the periphery of the stirring bin, the stand is located between the top plate and the support table and supports the top plate, a stirring frame is located in the stirring bin and is displaced along the circumferential direction of the stirring bin. The tank body of the traditional slurry preparation is changed to a bin body, which greatly increases the slurry preparation capacity, can simultaneously meet the slurry conveying operation of multiple grouting pipes, greatly improves the goaf grouting efficiency, and further changes the stirring mode to ensure the uniformity of the slurry mixing, guarantees the use effect of the slurry, and realizes the goaf grouting filling operation.

Description

Technical Field

[0001] This application relates to the field of goaf grouting technology, and in particular to a grouting device for goaf grouting operations in coal mines. Background Technology

[0002] Goaf areas are "cavities" created below the surface by human excavation or natural geological movements. The existence of goaf areas poses a significant safety hazard to mine production, as personnel and machinery may fall into the goaf area and be injured. Therefore, it is necessary to grout and seal the goaf area to ensure that the open space above can be used for workers and equipment to move around normally.

[0003] Currently, grouting is required before filling goaf areas. Traditional grouting tanks can only deliver a limited amount of grout at a time, and when dealing with multiple grouting points, the material feeding speed is fast but the supply capacity is insufficient.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this application is to provide a slurry preparation device for grouting operations in coal mine goaf areas, so as to solve or alleviate the problem that traditional slurry preparation tanks can only deliver a small amount of slurry at one time.

[0006] To achieve the above objectives, this application provides the following technical solution: This application provides a slurry preparation device for grouting operations in coal mine goaf areas, comprising: a support platform supported by outriggers to raise its position; a ring-shaped mixing chamber placed on top of the support platform and centered thereon; a slurry outlet pipe provided at the bottom of the mixing chamber, the slurry outlet pipe passing through the support platform and protruding downwards; a top plate horizontally located directly above the mixing chamber; columns arranged along the periphery of the mixing chamber, the columns being located between the top plate and the support platform, supporting the top plate through the columns; and a mixing frame located inside the mixing chamber, the mixing frame moving along the circumference of the mixing chamber, and rotating during the movement of the mixing frame to mix the slurry inside the mixing chamber.

[0007] Preferably, an angle plate is provided between the included angle of the support leg and the support platform; The lower end of the outrigger is fitted with a pad.

[0008] Preferably, the lower end of the column is in contact with the upper surface of the support platform; The upper end of the column has a threaded column protruding upwards.

[0009] Preferably, the diameter of the threaded post is smaller than the diameter of the column; The upper end of the threaded column passes through the top plate and protrudes upwards to be fastened with a threaded nut.

[0010] Preferably, a motor is mounted on the top plate. The lower surface of the top plate is provided with a gear disk which is centered.

[0011] Preferably, the motor shaft passes downward through the center of the top plate and the gear disk and protrudes downward; The protruding section of the motor shaft is divided into a rectangular section and a threaded section.

[0012] Preferably, the rectangular segment is fitted with a hanger. The hanger consists of a collar and horizontal booms. The opening of the collar fits into the rectangular segment, and multiple horizontal booms are distributed around the collar.

[0013] Preferably, the stirring shaft of the stirring rack is rotatably mounted on the end of the boom; The upper end of the stirring shaft is connected to a traveling gear, which meshes with the gear disk.

[0014] Preferably, the outer thread of the threaded segment is fitted with a threaded sleeve; A support plate is provided above the threaded sleeve, and the hanger is supported by the top plate.

[0015] Preferably, the bottom of the inner cavity of the mixing chamber is recessed; The top opening of the mixing chamber narrows.

[0016] Compared with the closest prior art, the technical solution of this application has the following beneficial effects: This application changes the traditional slurry tank to a silo, which not only greatly increases the slurry production capacity, but also allows for the simultaneous slurry delivery of multiple grouting pipes, thus significantly improving the grouting efficiency in the goaf. Furthermore, this application changes the mixing method to ensure the uniformity of the slurry mixing, guaranteeing the effectiveness of the slurry and facilitating the grouting and filling operations in the goaf. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a schematic diagram of the front view of this application; Figure 2 This is a schematic diagram of the overall structure of this application; Figure 3 This is a front view schematic diagram of the top slab structure of this application; Figure 4 This is an overall schematic diagram of the mixing chamber structure of this application; Figure 5This is a schematic diagram of the combination of the hanger and mixing rack structure of this application.

[0018] In the diagram: 1. Support platform; 2. Support leg; 3. Mixing chamber; 4. Slurry outlet pipe; 5. Top plate; 6. Column; 7. Mixing frame; 8. Angle plate; 9. Pad plate; 10. Threaded column; 11. Motor; 12. Gear disk; 13. Collar; 14. Horizontal boom; 15. Travel gear; 16. Threaded sleeve; 17. Support plate; 18. Limiting plate; 19. Rectangular section; 20. Threaded section. Detailed Implementation

[0019] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0020] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.

[0022] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] This embodiment aims to provide a slurry preparation device for grouting operations in coal mine goaf areas. Its main function is to greatly increase the slurry production volume and ensure the uniformity of slurry mixing, thereby improving grouting efficiency and grouting quality.

[0024] Reference Figure 1 , Figure 2 and Figure 4 The system includes: a support platform 1, a top plate 5, and a mixing rack 7. The support platform 1 is supported by legs 2 to raise its position. The legs 2 are I-beams. A pad 9 is welded to the lower end of the legs 2 to improve bottom stability. An angle plate 8 is provided between the legs 2 and the support platform 1. The angle plate 8 is bolted to the I-beams and fixed to the support platform 1 with self-tapping screws. A ring-shaped mixing chamber 3 is placed on the top of the support platform 1 and is centered thereon. The width of the cavity of the mixing chamber 3 is the same as the diameter of the traditional pulping tank. The capacity of a single mixing chamber 3 is several times larger than that of the traditional pulping tank. A slurry outlet pipe 4 is welded to the center of the bottom of the mixing chamber 3. The bottom of the mixing chamber 3 is recessed in the center to prevent material from accumulating at the bottom of the mixing chamber 3. The shape of the recess is not directly shown in the figure. There are six or more slurry outlet pipes 4 distributed around the mixing chamber 3 to meet the simultaneous slurry injection of multiple slurry pipes. The lower end of the slurry outlet pipe 4 passes through the support platform 1 and protrudes downward to connect to the slurry delivery pipe or the slurry pump pipe.

[0025] Reference Figure 1 and Figure 2 Both the top plate 5 and the support platform 1 are circular. The top plate 5 is horizontally located directly above the mixing chamber 3, and four columns 6 are arranged along the periphery of the mixing chamber 3. The columns 6 are located between the top plate 5 and the support platform 1, and support the top plate 5 through the columns 6. Specifically, the lower end of the column 6 is welded to the upper surface of the support platform 1, and the upper end of the column 6 has a threaded column 10 protruding upward, and the diameter of the threaded column 10 is smaller than the diameter of the column 6, so that the upper end of the column 6 forms a support platform to support the top plate 5. The upper end of the threaded column 10 passes through the top plate 5 and protrudes upward, and is fastened with a nut by a threaded sleeve 16, thereby ensuring the stability of the top plate 5, and at the same time facilitating the disassembly of the components of this device and reducing the difficulty of relocation.

[0026] Reference Figures 1-5The mixing frame 7 is rotatably installed in the annular cavity of the mixing chamber 3. The mixing frame 7 moves along the circumference of the mixing chamber 3 and rotates during the movement to mix the slurry in the mixing chamber 3. Specifically, a motor 11 is fixedly installed on the upper surface of the top plate 5 and centered thereon. A gear disk 12 is fixed to the center of the lower surface of the top plate 5 by bolts. The motor 11 is placed vertically so that its shaft passes through the center of the top plate 5 and the gear disk 12 and protrudes downwards. The protruding section of the shaft is divided into a rectangular section 19 and a threaded section 20. The rectangular section 19 is set at the top. A hanger is fitted on the outside of the rectangular section 19. The hanger consists of a collar 13 and a horizontal... The boom 14 is constructed, and the collar 13 is welded to the horizontal boom 14. The ring opening of the collar 13 fits into the rectangular section 19 so that the machine shaft drives the hanger to rotate. There are three horizontal booms 14 distributed around the collar 13. The stirring shaft of the stirring frame 7 is rotated and fitted at the end of the boom. The upper end of the stirring shaft is welded and connected to the traveling gear 15, which is centered and meshes with the gear disk 12. When the hanger drives the stirring frame 7 to move within the stirring chamber 3, the traveling gear 15 will move along the gear disk 12 so that the stirring frame 7 rotates during the movement, thereby thoroughly stirring the slurry in the stirring chamber 3 to ensure uniformity.

[0027] In this embodiment, the outer threaded sleeve 16 of the threaded section 20 is equipped with a threaded sleeve 16, and a support plate 17 is provided above the threaded sleeve 16. The top plate 5 is fitted on the outside of the machine shaft and can be welded to the top of the threaded sleeve 16. The top plate 5 directly supports the hanger. The top plate 5 can expand the force-bearing surface of the threaded sleeve 16 and the hanger, making the hanger more stable.

[0028] In this embodiment, the top inner and outer sides of the mixing chamber 3 are bent towards the direction of the chamber channel to narrow the opening. This arrangement can prevent the slurry in the mixing chamber 3 from splashing out of the chamber after being stirred.

[0029] In this embodiment, the stirring shaft of the stirring frame 7 is rotatably mounted at the end of the horizontal boom 14 via a bearing (not shown in the figure). The bearing is nested inside the end of the horizontal boom 14 and the bearing is interference-fitted with the stirring shaft. Corresponding to the bearing, limit plates 18 are installed at the top and bottom of the horizontal boom 14 via screws. The limit plates 18 ensure the vertical stability of the bearing and prevent it from detaching from the horizontal boom 14.

[0030] The slurry preparation device provided in this embodiment replaces the traditional slurry tank with a silo, which not only greatly increases the slurry production capacity, but also allows for the simultaneous slurry delivery of multiple grouting pipes, thus significantly improving the grouting efficiency of the goaf. Furthermore, this device further modifies the mixing method to ensure the uniformity of the slurry mixing, guaranteeing the effectiveness of the slurry and facilitating the grouting and filling operations in the goaf.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A slurry preparation device for grouting operations in coal mine goaf areas, characterized in that, include: A support platform is raised by support legs. A ring-shaped mixing chamber is placed on the top of the support platform and is centered thereon. A slurry outlet pipe is provided at the bottom of the mixing chamber. The slurry outlet pipe passes through the support platform and protrudes downward. The top plate is horizontally located directly above the mixing chamber, and columns are arranged along the perimeter of the mixing chamber. The columns are located between the top plate and the support platform, and support the top plate through the columns. A stirring rack is located inside the stirring chamber. The stirring rack moves along the circumference of the stirring chamber and rotates during the movement to stir the slurry inside the stirring chamber.

2. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 1, characterized in that, An angle plate is provided between the angle between the support leg and the support platform; The lower end of the outrigger is fitted with a pad.

3. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 1, characterized in that, The lower end of the column is in contact with the upper surface of the support platform; The upper end of the column has a threaded column protruding upwards.

4. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 3, characterized in that, The diameter of the threaded column is smaller than the diameter of the upright column; The upper end of the threaded column passes through the top plate and protrudes upwards to be fastened with a threaded nut.

5. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 1, characterized in that, A motor is installed on the top plate; The lower surface of the top plate is provided with a gear disk which is centered.

6. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 5, characterized in that, The motor shaft passes downward through the center of the top plate and the gear disk and protrudes downward. The protruding section of the motor shaft is divided into a rectangular section and a threaded section.

7. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 6, characterized in that, The rectangular segment is fitted with a hanger. The hanger consists of a collar and horizontal booms. The opening of the collar fits into the rectangular segment, and multiple horizontal booms are distributed around the collar.

8. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 7, characterized in that, The stirring shaft of the stirring rack is rotatably mounted on the end of the boom; The upper end of the stirring shaft is connected to a traveling gear, which meshes with the gear disk.

9. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 8, characterized in that, The external threaded section is fitted with a threaded sleeve; A support plate is provided above the threaded sleeve, and the hanger is supported by the top plate.

10. The slurry preparation device for grouting operations in coal mine goaf areas according to claim 1, characterized in that, The bottom of the inner cavity of the mixing chamber is recessed; The top opening of the mixing chamber narrows.

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