Drainage device for underground coal mine

Abstract

The utility model relates to the technical field of mine drainage, in particular to an underground coal mine drainage device which comprises a mine base layer and further comprises a detection assembly, a drainage assembly and a drainage assembly. The sewage discharging assembly is arranged at the bottom of the inner cavity of the water sump and facilitates discharging sludge sinking to the bottom. According to the utility model, the KJ1158 hydrological dynamic observation system is utilized to monitor information such as flow, flow velocity and the like of each underground site in real time, and the KJ1137 mine hydrological dynamic monitoring and early warning system can trigger an alarm to remind, so that workers can respond quickly, and the working efficiency is improved; redundant accumulated water can be quickly drained through the drainage assembly; the accumulated water level height is monitored in real time through the detection assembly, and accumulated water level height data are visually displayed to workers, so that the data are collected and analyzed in a centralized manner, and equipment operation is convenient to manage and optimize; sludge sinking to the bottom of the water sump inner cavity can be discharged through the sewage discharging assembly, and therefore normal operation and efficient drainage of the mine water sump can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mine drainage technology, specifically a drainage device for underground coal mines. Background Technology

[0002] A coal mine refers to all the passages and chambers excavated underground during coal mining. Due to the complex geological structure of coal mines, faults, fissures, and other channels allow groundwater to easily seep into the mine, leading to water accumulation in the water tanks. This water accumulation not only deteriorates the underground working environment, affecting workers' health and production efficiency, but may also endanger workers' lives in severe cases. Therefore, it is necessary to use drainage devices to lower the water level in the water tanks to prevent flooding in the mine, avoid water immersion of mechanical and electrical equipment, and ensure the normal operation of the mine and the safety of workers.

[0003] In existing coal mine drainage systems, the pumping workers in the central pumping station are usually responsible for starting and stopping the pumps, checking the water level in the sump, and recording the operation status during their shift. When draining water, workers approach the sump opening to observe the water level and then start the switch on the spot according to the actual water level. Once the water level drops, the pumps are stopped. This entire drainage process is not only cumbersome, but also requires at least three fixed personnel to be assigned to drain water each shift, resulting in high labor costs. In addition, there is a risk of falling when observing water levels near the sump opening, which is not conducive to the drainage work in coal mines. Utility Model Content

[0004] The purpose of this utility model is to provide a drainage device for underground coal mines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for underground coal mines, comprising a mine base, a water tank on one side of the mine base, a horizontal plate on the top of the inner cavity of the water tank, the horizontal plate being connected to both sides of the inner wall of the water tank, a support platform on the top of the other side of the mine base, and multiple pillars symmetrically installed at the bottom edge of the support platform, the bottom ends of the pillars being connected to the mine base, and further comprising:

[0006] A detection component is installed on one side of the inner wall of the water tank for real-time monitoring of the water level. A drainage component is provided below the support platform to drain excess water in a timely manner.

[0007] A sewage discharge assembly is installed at the bottom of the water tank to facilitate the discharge of sedimented sludge. Guardrails are fixedly installed at the top edge of the horizontal plate and the top edge of the water tank.

[0008] Preferably, the detection component includes a support base fixed to one side of the guardrail, and a liquid level sensor is fixedly installed on one side of the support base, with the detection end of the liquid level sensor located inside the water tank.

[0009] Preferably, the sewage discharge assembly includes a sewage discharge submersible pump disposed at the bottom of the water tank cavity, and at least two sewage discharge submersible pumps are provided. The sewage discharge submersible pumps are fixedly installed inside the water tank, and the sewage discharge outlet of the sewage discharge submersible pump is connected to a sewage discharge pipe. One end of the sewage discharge pipe extends to the outside of the water tank, and a first soft starter is fixedly installed on one side of the guardrail.

[0010] Preferably, the horizontal plate has an opening in the middle, and a ladder is provided inside the opening. The ladder is connected to the horizontal plate and the water tank respectively.

[0011] Preferably, the drainage assembly includes a centrifugal water pump disposed below the support platform. The centrifugal water pump is fixedly installed on the mine foundation. The inlet of the centrifugal water pump is connected to an inlet pipe, one end of which extends to the bottom of the water tank cavity. The outlet of the centrifugal water pump is connected to an outlet pipe. A second soft starter is fixedly installed on one side of the support platform.

[0012] Preferably, two check valves are symmetrically installed inside the water outlet pipe, and a gate valve is installed at one end of the water outlet pipe.

[0013] Preferably, a DC power monitoring substation is fixedly installed on the top of one side of the support platform, and a relay device is provided on one side of the DC power monitoring substation, with the bottom of the relay device connected to the support platform.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes the KJ1158 hydrological dynamic observation system to monitor flow rate, velocity, water temperature, and water level at various locations underground in real time. The KJ1137 mine hydrological dynamic monitoring and early warning system automatically triggers alarms to remind workers, enabling them to respond quickly and improving work efficiency. The drainage component facilitates the rapid discharge of excess water from the water tank. The detection component monitors the water level in real time and displays the data intuitively to workers, allowing for centralized data collection and analysis, which facilitates management and optimizes equipment operation. The sewage discharge component removes sludge that has settled at the bottom of the water tank, ensuring the normal operation and efficient drainage of the mine water tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4This is a schematic diagram of the internal structure of the water tank of this utility model.

[0020] In the diagram: 1. Mine base; 2. Water tank; 3. Horizontal plate; 4. Detection component; 41. Support base; 42. Liquid level sensor; 5. Sewage discharge component; 51. Sewage submersible pump; 52. Sewage pipe; 53. First soft starter; 6. Inlet; 7. Ladder; 8. Support platform; 9. Support column; 10. Drainage component; 101. Centrifugal water pump; 102. Outlet pipe; 103. Inlet pipe; 104. Second soft starter; 11. Check valve; 12. Gate valve; 13. DC monitoring substation; 14. Relay component; 15. Guardrail. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please see Figure 1-4As shown, a drainage device for underground coal mines includes a mine base 1, a water tank 2 on one side of the mine base 1, a horizontal plate 3 on the top of the inner cavity of the water tank 2, the horizontal plate 3 being connected to both sides of the inner wall of the water tank 2, and a support platform 8 on the top of the other side of the mine base 1. Multiple support columns 9 are symmetrically installed at the bottom edge of the support platform 8, with the bottom ends of the support columns 9 connected to the mine base 1. The device also includes: a detection component 4 installed on one side of the inner wall of the water tank 2 for real-time monitoring of the water level, which allows for easy and intuitive display of the water level data to workers; and a drainage component 10 located below the support platform 8 for timely drainage of excess water, which facilitates rapid drainage of excess water from the water tank 2. It should be noted that the coal mine is equipped with a KJ1158 hydrological dynamic observation system and a KJ1137 mine hydrological dynamic monitoring and early warning system. The KJ1158 hydrological dynamic observation system is used for real-time monitoring. The system monitors information such as flow rate, velocity, water temperature, and water level at various locations underground. When the hydrological parameters of water tank 2 exceed the preset safety range, the KJ1137 mine hydrological dynamic monitoring and early warning system will automatically trigger an alarm to remind the staff. All of the above systems are commonly used monitoring substations in coal mines. They can be used in conjunction with drainage components 10 to enable staff to respond quickly and improve work efficiency. The sewage discharge component 5 is set at the bottom of the inner cavity of water tank 2 to facilitate the discharge of sedimented sludge. By setting sewage discharge component 5, the sludge settled at the bottom of the inner cavity of water tank 2 can be discharged, thus avoiding the decrease in water storage capacity of water tank 2 due to excessive accumulation of sludge, and ensuring the normal operation and efficient drainage of the mine water tank. Guardrails 15 are fixedly installed at the top edge of the horizontal plate 3 and the top edge of water tank 2. By setting guardrails 15, staff near the top opening of water tank 2 can be protected, which helps to reduce the probability of staff falling into water tank 2 and improves safety performance.

[0023] The detection component 4 includes a support base 41 fixed to one side of the guardrail 15, and a liquid level sensor 42 is fixedly installed on one side of the support base 41. The detection end of the liquid level sensor 42 is located inside the water tank 2. Figure 2 , Figure 3 As shown, the liquid level sensor 42 can be a submersible pressure method to measure water depth and level, model GUY10. During operation, the detection end of the liquid level sensor 42 located inside the water tank 2 can monitor the water level in real time. Then, the water level data can be displayed to the staff intuitively through the dial. When the water level inside the water tank 2 drops to the set value, it issues an early warning and remotely stops drainage. This centralized collection and analysis of data facilitates management and optimization of equipment operation.

[0024] The sewage discharge assembly 5 includes at least two submersible sewage pumps 51 located at the bottom of the inner cavity of the water tank 2. Each submersible sewage pump 51 is fixedly installed inside the water tank 2, and its outlet is connected to a sewage pipe 52. One end of the sewage pipe 52 extends to the outside of the water tank 2. A first soft starter 53 is fixedly installed on one side of the guardrail 15. Figure 2 , Figure 4 As shown, in actual use, one end of the sewage pipe 52 needs to be connected to the external sewage pipeline, and then the sewage submersible pump 51 can be used to discharge the sludge that has settled at the bottom of the water tank 2, thus ensuring the normal operation and efficient drainage of the mine water tank.

[0025] A passage 6 is provided in the middle of the horizontal plate 3, and a ladder 7 is provided inside the passage 6. The ladder 7 is connected to both the horizontal plate 3 and the water tank 2. Figure 2 , Figure 4 As shown, by setting up ladder 7, staff can descend to the bottom of the water tank 2 cavity to carry out cleaning operations after the water inside the water tank 2 has been drained, which improves its practicality.

[0026] The drainage assembly 10 includes a centrifugal water pump 101 disposed below the support platform 8. The centrifugal water pump 101 is fixedly installed on the mine foundation 1. The inlet of the centrifugal water pump 101 is connected to an inlet pipe 103, one end of which extends to the bottom of the inner cavity of the water tank 2. The outlet of the centrifugal water pump 101 is connected to an outlet pipe 102. A second soft starter 104 is fixedly installed on one side of the support platform 8. Figure 2 , Figure 4 As shown, the centrifugal water pump 101 can be a D155-30×4 type multistage centrifugal water pump, and the first soft starter 53 and the second soft starter 104 can be QJR-400 / 1140 (600) soft starters. The centrifugal water pump 101 can facilitate the rapid discharge of excess water inside the water tank 2. With the KJ1158 hydrological dynamic observation system and the KJ1137 mine hydrological dynamic monitoring and early warning system, the drainage component 10 can be made more convenient and save labor costs. The first soft starter 53 and the second soft starter 104 can ensure the smooth start and reliable operation of the centrifugal water pump 101 and the sewage submersible pump 51, avoiding the impact of large current on the power grid caused by direct start and improving the stability of the equipment.

[0027] Two check valves 11 are symmetrically installed inside the outlet pipe 102, and a gate valve 12 is installed at one end of the outlet pipe 102. Figure 1 , Figure 2 As shown, the check valve 11 can be a DN150 model, and the gate valve 12 can be a DN150 model. The check valve 11 is used to prevent backflow of water inside the outlet pipe 102, thereby protecting the pipeline system from damage, while the gate valve 12 is used to cut off the flow of water inside the outlet pipe 102.

[0028] A DC power monitoring substation 13 is fixedly installed on the top of one side of the support platform 8. A repeater 14 is provided on one side of the DC power monitoring substation 13, and the bottom of the repeater 14 is connected to the support platform 8. Figure 2 , Figure 4 As shown, DC monitoring substation 13 can be selected from mining-grade explosion-proof and intrinsically safe DC power supply KDY660 / 24B(A) and monitoring substation KJ90-F16(C), and repeater 14 can be selected from KTL12 mining-grade intrinsically safe repeater. DC monitoring substation 13 is a power supply device specially designed for use in mining environments, with dual protection functions of explosion-proof and intrinsic safety, and can operate safely in environments containing explosive gases. Repeater 14 is a communication device specially designed for mining environments, mainly used in communication systems in underground mines such as coal mines, which can ensure effective communication between miners and help improve work efficiency and work coordination.

[0029] Working principle: First, the KJ1158 hydrological dynamic observation system monitors the flow rate, velocity, water temperature, and water level at various locations underground in real time. When the hydrological parameters of water tank 2 exceed the preset safety range, the KJ1137 mine hydrological dynamic monitoring and early warning system will automatically trigger an alarm to remind the staff, enabling them to respond quickly and improve work efficiency. Then, the drainage component 10 facilitates the rapid discharge of excess water from inside water tank 2. At the same time, the detection component 4 monitors the water level in real time and displays the water level data intuitively to the staff. This centralized collection and analysis of data facilitates management and optimization of equipment operation. When the water level inside water tank 2 drops to the set value, it issues an early warning and remotely stops the drainage work. Finally, the sludge that has settled at the bottom of the inner cavity of water tank 2 can be discharged through the sewage discharge component 5. This ensures the normal operation and efficient drainage of the mine water tank.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A drainage device for underground coal mines, comprising a mine base (1), characterized in that, A water tank (2) is provided on one side of the mine base (1). A horizontal plate (3) is provided on the top of the inner cavity of the water tank (2). The horizontal plate (3) is connected to both sides of the inner wall of the water tank (2). A support platform (8) is provided on the top of the other side of the mine base (1). Multiple pillars (9) are symmetrically installed at the bottom edge of the support platform (8). The bottom end of the pillars (9) is connected to the mine base (1). The base also includes: A detection component (4) is installed on one side of the inner wall of the water tank (2) for real-time monitoring of the water level. A drainage component (10) is provided below the support platform (8) to drain excess water in a timely manner. A sewage discharge assembly (5) is installed at the bottom of the inner cavity of the water tank (2) to facilitate the discharge of sedimented sludge. Guardrails (15) are fixedly installed at the top edge of the horizontal plate (3) and the top edge of the water tank (2).

2. The drainage device for underground coal mines according to claim 1, characterized in that: The detection component (4) includes a support base (41) fixed to one side of the guardrail (15), and a liquid level sensor (42) is fixedly installed on one side of the support base (41). The detection end of the liquid level sensor (42) is located inside the water tank (2).

3. A drainage device for underground coal mines according to claim 1, characterized in that: The sewage discharge assembly (5) includes a sewage discharge submersible pump (51) located at the bottom of the inner cavity of the water tank (2). At least two sewage discharge submersible pumps (51) are provided. The sewage discharge submersible pumps (51) are fixedly installed inside the water tank (2). The sewage discharge outlet of the sewage discharge submersible pump (51) is connected to a sewage discharge pipe (52). One end of the sewage discharge pipe (52) extends to the outside of the water tank (2). A first soft starter (53) is fixedly installed on one side of the guardrail (15).

4. A drainage device for underground coal mines according to claim 1, characterized in that: The horizontal plate (3) has an opening (6) in the middle, and a ladder (7) is provided inside the opening (6). The ladder (7) is connected to the horizontal plate (3) and the water tank (2) respectively.

5. A drainage device for underground coal mines according to claim 1, characterized in that: The drainage assembly (10) includes a centrifugal water pump (101) located below the support platform (8). The centrifugal water pump (101) is fixedly installed on the mine base (1). The inlet of the centrifugal water pump (101) is connected to an inlet pipe (103). One end of the inlet pipe (103) extends to the bottom of the inner cavity of the water tank (2). The outlet of the centrifugal water pump (101) is connected to an outlet pipe (102). A second soft starter (104) is fixedly installed on one side of the support platform (8).

6. A drainage device for underground coal mines according to claim 5, characterized in that: Two check valves (11) are symmetrically installed inside the water outlet pipe (102), and a gate valve (12) is installed at one end of the water outlet pipe (102).

7. A drainage device for underground coal mines according to claim 1, characterized in that: A DC power monitoring substation (13) is fixedly installed on the top of one side of the support platform (8). A relay (14) is provided on one side of the DC power monitoring substation (13). The bottom of the relay (14) is connected to the support platform (8).

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