Coal mine underground gangue slurry grouting pipe storage device
By designing a grouting pipe storage device for underground gangue grout in coal mines, the problem of grouting pipe stacking during the movement of fully mechanized hydraulic supports was solved by using an inverted L-shaped straight grouting steel pipe and a winch system. This achieved efficient storage and connection of the grouting pipe, improving production safety and efficiency.
Patent Information
- Application Number
- CN202422867041.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing underground slurry conveying pipes in coal mines are prone to stacking during the movement of fully mechanized hydraulic supports, leading to increased conveying resistance and the risk of slurry leakage, which affects production safety and normal production.
A coal mine gangue grouting pipe storage device was designed, including a hose recovery assembly and a high-pressure grouting hose. The device utilizes an inverted L-shaped straight grouting steel pipe and a winch system to realize the storage and connection of the grouting pipe. By winding the high-pressure grouting hose on the winch, the problem of arbitrary stacking of grouting pipes in the limited space underground is solved.
This technology enables coordinated movement of the slurry delivery pipe and the hydraulic support of the fully mechanized mining unit, reducing conveying resistance and the risk of slurry leakage, saving manpower, improving production efficiency, and reducing equipment costs.
Smart Images
Figure CN223661914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of green mining in coal mines, specifically to a coal mine gangue grouting pipe storage device. Background Technology
[0002] Underground coal mine filling and treatment technology can handle large quantities of gangue, fundamentally solving the problem of gangue disposal and effectively avoiding numerous environmental problems caused by gangue accumulation, thus achieving green mining. In coal mining, a collapse space or a certain distance of suspended roof space is formed behind the fully mechanized hydraulic support. Injecting gangue slurry into this space can greatly reduce drilling operations, and this space is large with great disposal potential. The gangue grouting and disposal technology for the collapse space behind the fully mechanized hydraulic support mainly involves pumping prepared gangue slurry to the mining face, and then filling and disposing of it in the large area of suspended roof or collapse space behind the support through the side roadways and the interior of the hydraulic support.
[0003] The core issue of grouting technology for underground coal mining and filling is production safety and ensuring uninterrupted operation of the fully mechanized mining face. When the fully mechanized hydraulic support is in operation, it moves a certain distance every few hours. This places high demands on the grout delivery pipe structure at the corners of the roadway and the fully mechanized mining face. The grout delivery pipe must coordinate with the movement of the hydraulic support, and given the complex underground space, existing grout delivery pipes cannot be arbitrarily stacked. When transporting high-concentration grout, arbitrarily stacked grout pipes will significantly increase the resistance to grout delivery and the risk of leakage, leading to grout leakage. Utility Model Content
[0004] Purpose of the utility model: To provide a coal mine gangue grouting pipe storage device to solve the above-mentioned problems existing in the prior art.
[0005] Technical Solution: A coal mine gangue slurry grouting pipe storage device, comprising two components: a hose recovery assembly and a high-pressure grouting hose. The hose recovery assembly has a predetermined working size and supporting force, and is equipped with an inverted L-shaped straight-through grouting steel pipe for corresponding storage and connection operations. The high-pressure grouting hose is movably connected to the hose recovery assembly, has a predetermined working length, and has multiple sets of valves evenly distributed on its working surface, which can be wound around the working surface of the hose recovery assembly.
[0006] In a further embodiment, the hose recovery assembly comprises three parts: a support frame, a connecting frame, and a winch. The support frame has a predetermined working length and supporting force, and is provided with corresponding bearing space for bearing and limiting operations. The connecting frame is connected to the support frame, has a predetermined working length and bending radius, and can perform corresponding limiting and connection operations. The winch is rotatably connected to the support frame, has a predetermined working dimension, and can perform rotational adjustment operations within a predetermined range.
[0007] In a further embodiment, the inverted L-shaped straight-through grouting steel pipe is connected to the connecting frame, and the working surface of the inverted L-shaped straight-through grouting steel pipe is provided with a straight-through grouting steel pipe interface; the inverted L-shaped straight-through grouting steel pipe is provided with a corresponding open end.
[0008] In a further embodiment, the valve assembly comprises three components: a main valve for the high-pressure grouting hose, a cleaning interface valve for the high-pressure grouting hose, and an interface valve connecting the high-pressure grouting hose to the straight-through grouting steel pipe. The main valve for the high-pressure grouting hose is positioned on the working surface of the high-pressure grouting hose, has a predetermined working dimension, and allows adjustment of the hose's working state. The cleaning interface valve for the high-pressure grouting hose is positioned on the working surface of the high-pressure grouting hose and maintains a predetermined working distance from the main valve, allowing for adjustment of its working state. The interface valve connecting the high-pressure grouting hose to the straight-through grouting steel pipe is also positioned on the working surface of the high-pressure grouting hose and maintains a predetermined working distance from the main valve, allowing for adjustment of its working state.
[0009] In a further embodiment, the working surface of the high-pressure grouting hose is provided with a high-pressure grouting hose cleaning interface and a high-pressure grouting hose to straight-through grouting steel pipe interface. The valve at the high-pressure grouting hose cleaning interface is located at the high-pressure grouting hose cleaning interface, allowing adjustment of the operating status of the high-pressure grouting hose cleaning interface; the valve at the high-pressure grouting hose to straight-through grouting steel pipe interface is located at the high-pressure grouting hose to straight-through grouting steel pipe interface, allowing adjustment of the operating status of the high-pressure grouting hose to straight-through grouting steel pipe interface.
[0010] In a further embodiment, a predetermined working distance is maintained between the multiple sets of valve groups, and the working surface of the winch is provided with threaded grooves.
[0011] Beneficial Effects: This utility model relates to a coal mine gangue slurry grouting pipe storage device in the field of green coal mining, comprising two components: a hose recovery assembly and a high-pressure grouting hose. The hose recovery assembly has a predetermined operating size and support force, and is equipped with an inverted L-shaped straight-through grouting steel pipe, enabling corresponding storage and connection operations. The high-pressure grouting hose is movably connected to the hose recovery assembly, has a predetermined operating length, and has multiple sets of valves evenly distributed on the operating surface, which can be wound around the operating surface of the hose recovery assembly. This application can achieve coordinated movement with the fully mechanized hydraulic support, and solves the problem of grouting pipe stacking caused by the movement of the fully mechanized hydraulic support in the limited underground space in a neat and space-saving manner. It also solves various problems caused by the frequent changes in the direction of the grouting pipe for high-concentration gangue slurry or filling mining paste. At the same time, the winch system is small in size, can wind a long high-pressure grouting hose, does not occupy space in the limited underground space, is easy to move, easy to control, and saves a lot of manpower. The gangue grouting system has a short downtime, completing the winding and docking operations within minutes. This device is reusable, has a simple working principle, and is easy and efficient to use. It effectively solves the engineering problems of gangue grouting and filling technology after coal mine mining, while also being cost-effective. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the connection status of this application.
[0013] Figure 2 This is a schematic diagram of the hose recycling assembly described in this application.
[0014] Figure 3 This is a schematic diagram of the high-pressure grouting hose described in this application.
[0015] The attached diagrams are labeled as follows: winch 1-1, threaded groove 1-2, inverted L-shaped straight grouting steel pipe 1-3, straight grouting steel pipe interface 1-4, support frame 1-5, connecting frame 1-6, high-pressure grouting hose main valve 2-1, high-pressure grouting hose cleaning interface valve 2-2, high-pressure grouting hose and straight grouting steel pipe interface valve 2-3, high-pressure grouting hose cleaning interface 2-4, high-pressure grouting hose and straight grouting steel pipe interface 2-5. Detailed Implementation
[0016] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0017] Example 1:
[0018] The coal mine gangue slurry grouting pipe storage device proposed in this embodiment includes two components: a hose recovery assembly and a high-pressure grouting hose. The hose recovery assembly has a predetermined operating size and supporting force, and is equipped with an inverted L-shaped straight-through grouting steel pipe 1-3, which can perform corresponding storage and connection operations. The high-pressure grouting hose is movably connected to the hose recovery assembly, has a predetermined operating length, and has multiple sets of valves evenly distributed on its operating surface, which can be wound around the operating surface of the hose recovery assembly. The hose recovery assembly includes three components: a support frame 1-5, a connecting frame 1-6, and a winch 1-1. The support frame 1-5 has a predetermined operating length and supporting force, and is equipped with corresponding bearing space, which can perform corresponding bearing and limiting operations. The connecting frame 1-6 is connected to the support frame 1-5, has a predetermined operating length and bending radius, and can perform corresponding limiting and connection operations. The winch 1-1 is rotatably connected to the support frame 1-5, has a predetermined operating size, and can perform rotational adjustment operations within a predetermined range. The inverted L-shaped straight-through grouting steel pipe 1-3 is connected to the connecting frame 1-6, and the working surface of the inverted L-shaped straight-through grouting steel pipe 1-3 is provided with a straight-through grouting steel pipe interface 1-4; the inverted L-shaped straight-through grouting steel pipe 1-3 is provided with a corresponding open end. The high-pressure grouting hose is connected to the inverted L-shaped straight-through grouting steel pipe 1-3 through the straight-through grouting steel pipe interface 1-4, and can be a plug-in movable connection. The valve group includes three components: the high-pressure grouting hose main valve 2-1, the high-pressure grouting hose cleaning interface 2-4 valve 2-2, and the high-pressure grouting hose and straight-through grouting steel pipe interface valve 2-3. The high-pressure grouting hose main valve 2-1 is placed on the working surface of the high-pressure grouting hose, has a predetermined working size, and can adjust the working state of the hose body. The high-pressure grouting hose cleaning interface 2-4 valve 2-2 is placed on the working surface of the high-pressure grouting hose and maintains a predetermined working distance from the main valve 2-1 of the high-pressure grouting hose pipeline, allowing for adjustment of the corresponding working state. The high-pressure grouting hose and straight-through grouting steel pipe interface valve 2-3 is placed on the working surface of the high-pressure grouting hose and maintains a predetermined working distance from the main valve 2-1 of the high-pressure grouting hose pipeline, allowing for adjustment of the corresponding working state. The working surface of the high-pressure grouting hose is provided with the high-pressure grouting hose cleaning interface 2-4 and the high-pressure grouting hose and straight-through grouting steel pipe interface 2-5. The valve 2-2 of the high-pressure grouting hose cleaning interface 2-4 is located at the high-pressure grouting hose cleaning interface 2-4 and can adjust the working status of the high-pressure grouting hose cleaning interface 2-4; the valve 2-3 of the high-pressure grouting hose and straight grouting steel pipe interface 2-5 is located at the high-pressure grouting hose and straight grouting steel pipe interface 2-5 and can adjust the working status of the high-pressure grouting hose and straight grouting steel pipe interface 2-5.A predetermined working distance is maintained between the multiple sets of valve groups, and the working surface of the winch 1-1 is provided with threaded grooves 1-2 to facilitate the high-pressure grouting hose to be wound and retracted onto the working surface of the winch 1-1.
[0019] Example 2:
[0020] Based on Example 1, in the side roadways of the coal mine, at a certain distance from the working face of the fully mechanized hydraulic support, the gangue grouting pipeline route is changed from a steel pipe to a high-pressure grouting hose. A set of valves and interfaces is installed on the high-pressure grouting hose approximately every 1 meter. At the corner between the side roadways and the working face of the fully mechanized hydraulic support, a telescopic winch 1-1 with a straight-through steel pipe is placed. The winch 1-1 does not have a drive mechanism; the lower part of the winch 1-1 system can be designed with pulleys for easy movement. After placing the winch 1-1 system at the corner, the bottom of the inverted L-shaped straight-through grouting steel pipe 1-3 is connected to the grouting pipe inside the fully mechanized hydraulic support, and the top straight-through grouting steel pipe interface 1-4 is connected to the high-pressure grouting hose and the straight-through grouting steel pipe interface 2-5. Before grouting begins, all main valves 2-1 of the high-pressure grouting hoses in the high-pressure grouting hose system are opened, and all valves 2-2 (cleaning interface 2-4) and 2-3 (interface 2-3) of the high-pressure grouting hoses and straight-through grouting steel pipes are closed. After connecting the straight-through grouting steel pipe interface 1-4 to the high-pressure grouting hose and straight-through grouting steel pipe interface 2-5, close the main valve 2-1 of the high-pressure grouting hose system and open the valve 2-3 of the high-pressure grouting hose and straight-through grouting steel pipe interface to begin the gangue grouting operation.
[0021] After the fully mechanized hydraulic support moves, move the winch system 1-1 away from the fully mechanized working face in the roadway. Stop the gangue grouting pump, close the main valve 2-1 of the high-pressure grouting hose line of the last set, and open the straight-through grouting steel pipe interface 1-4 and the high-pressure grouting hose interface 2-5. Rotate the winch system 1-1 to wind up the excess length of the high-pressure grouting hose in the roadway. The high-pressure grouting hose enters the threaded groove 1-2 on the winch system 1-1 that matches the high-pressure grouting hose. Rotate until the interface 2-5 of the last set of high-pressure grouting hose and the straight-through grouting steel pipe 1-4 aligns, and then connect them. After connection, open the valve 2-3 of the high-pressure grouting hose and the straight-through grouting steel pipe interface, and start the gangue grouting pump to continue grouting and filling. Repeat this step as the fully mechanized hydraulic support continues to move.
[0022] The high-pressure grouting hose already coiled on the winch 1-1 contains gangue slurry. At this time, the main valve 2-1 of the high-pressure grouting hose pipeline for the gangue grouting section is closed. The cleaning water pipe is connected to the high-pressure grouting hose cleaning interface 2-4. The valve 2-2 of the high-pressure grouting hose cleaning interface 2-4 is opened to carry out the cleaning operation. This step is repeated.
[0023] In a further preferred embodiment, the high-pressure grouting hose can initially be partially wound around the working surface of the winch 1-1 to facilitate subsequent winding and retrieval. Alternatively, after working a certain distance, the high-pressure grouting hose can be manually wound around the working surface of the winch 1-1 before rotating the winch 1-1 to retrieve the high-pressure grouting hose.
[0024] The purpose of this invention is to solve the problem of coordinated movement of the grout delivery pipe with the hydraulic support at the corner between the two side roadways and the fully mechanized hydraulic support in the entire process of realizing the underground gangue grouting and disposal technology in coal mines. At the same time, it also solves various problems caused by the multiple changes in the direction of the grout delivery pipe for high-concentration gangue grout / paste.
[0025] The conceptual principle of this application is as follows:
[0026] At the corners of the roadways and the fully mechanized hydraulic supports on both sides, a winch 1-1 device is installed. The purpose of winch 1-1 is to wind up the excess portion of the grouting hose in the roadway caused by the movement of the fully mechanized hydraulic supports, thereby solving the problem of haphazard stacking of grouting pipes at critical locations underground. Above winch 1-1, an inverted L-shaped grouting steel pipe is installed to ensure short-distance delivery regardless of the amount of grouting hose wound around winch 1-1. Inside the roadway, at a certain distance from the working face of the fully mechanized hydraulic supports, the gangue grouting pipeline route changes from steel pipe to high-pressure grouting hose, which can be well arranged on winch 1-1. A set of valves and interfaces is installed on the high-pressure grouting hoses approximately every 1 meter. This is for easy operation of valves as the fully mechanized hydraulic supports move, for connecting to the inverted L-shaped steel pipe fixed on winch 1-1, and for easy cleaning.
[0027] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.
Claims
1. A device for storing gangue grouting pipes in underground coal mines, characterized in that... include: The hose recovery assembly has a predetermined operating size and support capacity, and is equipped with an inverted L-shaped straight grouting steel pipe for corresponding storage and connection operations; The high-pressure grouting hose is movably connected to the hose recovery assembly, has a predetermined working length, and has multiple sets of valve groups evenly distributed on the working surface, which can be wound around the working surface of the hose recovery assembly.
2. The coal mine gangue grouting pipe storage device according to claim 1, characterized in that, The hose recovery assembly includes: The support frame has a predetermined working length and supporting force, and is equipped with corresponding load-bearing space, which can carry out corresponding load-bearing and limiting operations; The connecting frame, connected to the support frame, has a predetermined working length and bending radius, and can perform corresponding limiting and connecting operations; The winch, which is rotatably connected to the support frame, has a predetermined working size and can perform rotational adjustment operations within a predetermined range.
3. A coal mine gangue grouting pipe storage device according to claim 2, characterized in that: The inverted L-shaped straight grouting steel pipe is connected to the connecting frame, and the working surface of the inverted L-shaped straight grouting steel pipe is provided with a straight grouting steel pipe interface; the inverted L-shaped straight grouting steel pipe is provided with a corresponding open end.
4. A coal mine gangue grouting pipe storage device according to claim 2, characterized in that, The valve assembly includes: The main valve of the high-pressure grouting hose is located on the working surface of the high-pressure grouting hose, has a predetermined working size, and can adjust the working state of the hose body. The cleaning interface valve of the high-pressure grouting hose is placed on the working surface of the high-pressure grouting hose and has a predetermined working distance between it and the main valve of the high-pressure grouting hose pipeline, so that the corresponding working state can be adjusted. The interface valve between the high-pressure grouting hose and the straight-through grouting steel pipe is placed on the working surface of the high-pressure grouting hose and is separated from the main valve of the high-pressure grouting hose pipeline by a predetermined working distance, which allows for adjustment of the corresponding working state.
5. A coal mine gangue grouting pipe receiving device according to claim 4, characterized in that: The working surface of the high-pressure grouting hose is provided with a high-pressure grouting hose cleaning interface and a high-pressure grouting hose and straight grouting steel pipe interface; The high-pressure grouting hose cleaning interface valve is located at the high-pressure grouting hose cleaning interface, and can adjust the working status of the high-pressure grouting hose cleaning interface; the high-pressure grouting hose and straight grouting steel pipe interface valve is located at the interface between the high-pressure grouting hose and the straight grouting steel pipe, and can adjust the working status of the interface between the high-pressure grouting hose and the straight grouting steel pipe.
6. A coal mine gangue grouting pipe storage device according to claim 2, characterized in that: A predetermined working distance is maintained between the multiple sets of valve groups, and the working surface of the winch is distributed with threaded grooves.