Automatic drainage system for mining area

Abstract

The utility model discloses an automatic drainage system for a mining area, which comprises an underground water sump in the mining area, the water sump discharges mine water along a water delivery pipe network through a drainage pump, and a water inlet header pipe at the inlet end of the drainage pump is connected with a water inlet pipe and an auxiliary line pipe which extend into the water sump. A first control valve and a second control valve which are installed on the drainage pump, the water inlet pipe and the auxiliary line pipe are electrically connected with a PLC of an automatic control system, the auxiliary line pipe and the water inlet pipe which are different in liquid level height are arranged at an inlet of the drainage pump of the water sump of the mine, and stable drainage of the drainage pump is achieved through control of the automatic control system. Stable operation of the drainage pump is guaranteed, the service life is prolonged, the manual operation problem of personnel is solved, the automation degree is high, and the personnel cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of automatic drainage of mines, in particular to an automatic drainage system for mining areas. Background Art

[0002] During the mining process, a large amount of mine water will be generated. In order to ensure the underground mining, it is necessary to collect the mine water in the water tank 1 for storage, and the mine water in the water tank 1 is regularly discharged to the well through the water pipe network 3 through the drainage pump 2 for treatment (such as Figure 3 shown).

[0003] However, since there are many impurities in the underground mine water, sediment will be generated at the bottom when it enters the water tank 1. When the drainage pump 2 is started for the initial drainage, the sediment at the bottom of the drainage pump 2 is drawn into the drainage pump 2 by the water inlet pipe 4 extending to the bottom of the water tank 1, causing the load of the drainage pump 2 to increase, affecting the normal operation of the drainage pump 2, and the start and stop control of the drainage pump 2 requires manual operation and has a low degree of automation, which is troublesome for the operator and affects the normal operation of the water tank 1. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides an automatic drainage system for a mining area.

[0005] The utility model is realized through the following technical solutions:

[0006] An automatic drainage system for a mining area comprises a water tank under a well in the mining area. The water tank discharges mine water along a water supply network through a drainage pump. The water inlet main pipe at the inlet end of the drainage pump is connected to the water inlet pipe and the secondary line pipe extending into the water tank. The first control valve and the second control valve installed on the drainage pump, the water inlet pipe and the secondary line pipe are electrically connected to a PLC controller of an automatic control system.

[0007] Further optionally, the inlet of the submerged secondary line pipe is located in the middle of the water tank, and the inlet of the water inlet pipe is arranged at the lower end of the inlet of the secondary line pipe.

[0008] Further optionally, a mixing system is also provided in the water bin, and the mixing system includes a mixing fan arranged outside the water bin, and an outlet of the mixing fan is connected to a mixing flow pipe arranged at the bottom of the water bin through an air pressure pipe.

[0009] Further optionally, a plurality of air holes are opened on the mixing pipe, and the mixing fan is electrically connected to a PLC controller of an automatic control system.

[0010] Further optionally, a liquid level system is also provided in the water tank, and the liquid level system includes a low-level detector and a high-level detector installed in the water tank, and the low-level detector and the high-level detector are electrically connected to the PLC controller.

[0011] Further optionally, the low-level detector is higher than the water inlet pipe inlet.

[0012] Compared with the existing technology, the beneficial effects of the utility model are: the utility model sets a secondary line pipe and a water inlet pipe with different liquid level heights at the drainage pump inlet of the water tank in the mine, and realizes stable drainage of the drainage pump through the automatic control system, thereby ensuring the stable operation of the drainage pump and extending its service life, solving the problem of manual operation by personnel, and saving personnel costs with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model system;

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the mixed flow tube;

[0015] Figure 3 It is a schematic diagram of the prior art of this utility;

[0016] In the figure: water tank 1, drainage pump 2, water supply network 3, water inlet pipe 4, first control valve 5, branch line pipe 6, water inlet main pipe 7, second control valve 8, low-level detector 9, high-level detector 10, PLC controller 11, mixing fan 12, air pressure pipe 13, mixed flow pipe 14, air hole 15. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0018] like Figure 1 As shown, an automatic drainage system for a mining area includes a water tank 1 underground in the mining area. The water tank 1 discharges mine water along a water supply network 3 through a drainage pump 2. A water inlet main pipe 7 at the inlet end of the drainage pump 2 is connected to a water inlet pipe 4 and a secondary line pipe 6 extending into the water tank 1. A first control valve 5 and a second control valve 8 installed on the drainage pump 2, the water inlet pipe 4 and the secondary line pipe 6 are electrically connected to a PLC controller 11 of the automatic control system.

[0019] The inlet of the secondary line pipe 6 is located in the middle of the water tank 1, and the inlet of the water inlet pipe 4 is arranged at the lower end of the inlet of the secondary line pipe 6. By arranging the secondary line pipe 6 and the water inlet pipe 4 at two different relative positions, the load of the drainage pump 2 during operation of the gas outlet can be reduced, and the service life of the drainage pump 2 can be extended.

[0020] A mixing uniformity system is also provided in the water bin 1, and the mixing uniformity system includes a mixing fan 12 arranged outside the water bin 1. The outlet of the mixing fan 12 is connected to a mixing flow pipe 14 arranged at the bottom of the water bin 1 through an air pressure pipe 13. The gas is blown out through the mixing flow pipe 14 to realize the upward movement of the bottom sediment and ensure the uniformity of impurities in the mine water.

[0021] like Figure 2As shown, a plurality of air holes 15 are formed on the mixing pipe 14, and the mixing fan 12 is electrically connected to the PLC controller 11 of the automatic control system.

[0022] A liquid level system is also provided in the water tank 1 , and the liquid level system includes a low level detector 9 and a high level detector 10 installed in the water tank 1 . The low level detector 9 and the high level detector 10 are electrically connected to a PLC controller 11 .

[0023] The low level detector 9 is higher than the inlet of the water inlet pipe 4, which can ensure that the water inlet pipe 4 is always below the liquid level, and avoid the drainage pump 2 running idle due to the liquid level being too low.

[0024] The implementation principle of an automatic drainage system for a mining area in the embodiment of the present application is as follows:

[0025] When the mine water level in the water tank 1 reaches the high-level detector 10 and needs to be drained, the high-level detector 10 transmits a signal to the PLC controller 11, and the PLC controller 11 controls the opening of the second control valve 8 and starts the drainage pump 2;

[0026] The drainage pump 2 discharges the relatively clear mine water in the middle of the water tank 1 through the secondary line pipe 6. Since the inlet of the secondary line pipe 6 is located in the middle of the water tank 1, it is far away from the bottom sedimentation, and the sucked mine water is relatively clear, so the mine water entering the drainage pump 2 has relatively few impurities, which greatly reduces the initial operation load of the drainage pump 2.

[0027] At the same time, the PLC controller 11 controls the mixing fan 12 of the mixing system to start, and transports air with a certain pressure along the wind pressure pipe 13 to the mixing pipe 14, and discharges it through a number of wind holes 15 on the mixing pipe 14 to blow up the sediment at the bottom of the sump 1, so that the bottom sediment is mixed evenly with the mine water in the sump 1 to avoid sedimentation. After the mixing fan 12 runs for 5 minutes, the PLC controller 11 controls the opening of the first control valve 5 and the closing of the second control valve 8, so that the water inlet pipe 4 at the bottom of the sump 1 works, and the evenly mixed mine water in the sump 1 is dispatched through the water inlet pipe 4, which not only avoids the discharge of sediment at the bottom of the sump 1, but also ensures the stable operation of the drainage pump 2. When the liquid level drops to the low level detector 9, the low level detector 9 transmits a signal to the drainage pump 2 and the mixing fan 12 to close, ensuring the next cycle of the sump.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic drainage system for a mining area, comprising a water tank (1) under the mining area, the water tank (1) discharges the mine water along a water pipe network (3) through a drainage pump (2), characterized in that: The water inlet main pipe (7) at the inlet end of the drainage pump (2) is connected to the water inlet pipe (4) and the auxiliary line pipe (6) extending into the water tank (1), and the first control valve (5) and the second control valve (8) installed on the drainage pump (2), the water inlet pipe (4) and the auxiliary line pipe (6) are electrically connected to the PLC controller (11) of the automatic control system.

2. The automatic drainage system for mining areas according to claim 1 is characterized by: The inlet of the secondary line pipe (6) is located in the middle of the water tank (1), and the inlet of the water inlet pipe (4) is arranged at the lower end of the inlet of the secondary line pipe (6).

3. The automatic drainage system for mining areas according to claim 2 is characterized in that: A uniform mixing system is also provided in the water bin (1), the uniform mixing system comprising a mixing fan (12) arranged outside the water bin (1), the outlet of the mixing fan (12) being connected to a mixing flow pipe (14) arranged at the bottom of the water bin (1) via an air pressure pipe (13).

4. The automatic drainage system for mining areas according to claim 3 is characterized by: The mixing pipe (14) is provided with a plurality of air holes (15), and the mixing fan (12) is electrically connected to a PLC controller (11) of an automatic control system.

5. The automatic drainage system for mining areas according to claim 3 is characterized by: A liquid level system is also provided in the water tank (1), and the liquid level system comprises a low-level detector (9) and a high-level detector (10) installed in the water tank (1), and the low-level detector (9) and the high-level detector (10) are electrically connected to a PLC controller (11).

6. The automatic drainage system for mining areas according to claim 5, characterized in that: The low-level detector (9) is higher than the inlet of the water inlet pipe (4).

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