Automatic air-driven drainage device with floating ball

Abstract

The utility model relates to coal mine underground drainage technical field, specifically disclose a kind of automatic air-driven drainage device of float ball, including, water storage component, the water storage component includes water storage tank, the bottom of water storage tank is connected with water inlet pipe, another end of water inlet pipe is communicated with external coal mine goaf ponding, one end of water inlet pipe located inside water storage tank is connected with U bend, the seamless cooperation of this device through float ball mechanical linkage and magnetic valve pneumatic control, realize goaf not landing drainage, and can control the size of water discharge, realize monitoring goaf in water level, realize full-automatic start-stop, without power intervention, avoid water pump blockage and gas leakage risk, water storage tank closed design cooperation U bend, backwater bend double protection, significantly improve drainage efficiency and safety, reduce compressed air consumption and equipment wear and tear simultaneously, applicable to coal mine underground complex environment.

Description

Technical Field

[0001] This utility model relates to the field of underground drainage technology in coal mines, and specifically discloses a float-type automatic pneumatic drainage device. Background Technology

[0002] Drainage of accumulated water in goaf areas is crucial for safe mine production. The "Coal Mine Safety Regulations" stipulate that electrical equipment cannot be installed in goaf areas before they are sealed; water can only be drained through ditches to pump stations. However, this method easily leads to debris clogging the pump suction inlets, preventing normal operation and causing water accumulation in the roadways. During routine power outages for maintenance or equipment malfunctions, the drain holes may not close automatically, resulting in large-scale water accumulation in the roadways and creating safety hazards. Furthermore, the pneumatic drainage equipment used often lacks automatic drainage; continuous, uninterrupted operation significantly reduces its lifespan and also affects the normal operation of the underground compressed air system. Utility Model Content

[0003] This utility model proposes a float-type automatic pneumatic drainage device. Through the seamless cooperation of the float mechanical linkage and the solenoid valve pneumatic control, the device avoids the risk of water pump blockage and gas leakage, significantly improves drainage efficiency and safety, and reduces compressed air consumption and equipment wear. It is suitable for the complex environment of underground coal mines.

[0004] This utility model is implemented as follows: a float-type automatic pneumatic drainage device, comprising:

[0005] A water storage component, comprising a water storage tank, with a water inlet pipe connected to the bottom of the water storage tank, the other end of the water inlet pipe connected to the accumulated water in the external coal mine goaf area, and a U-shaped elbow connected to one end of the water inlet pipe located inside the water storage tank.

[0006] A drain assembly includes a drain valve installed on a U-shaped elbow, a rotating shaft rotatably connected to the inner wall of the water storage tank, and a first float ball fixedly connected to the outer wall of the rotating shaft via a rigid connecting rod.

[0007] The drainage assembly includes a pneumatic drainage device, a drain pipe, and a compressed air pipe installed on the top of the water storage tank. The outlet end of the pneumatic drainage device is connected to the drain pipe, and the inlet end of the pneumatic drainage device is connected to a suction pipe extending into the interior of the water storage tank. A pneumatic control pipe is connected between the compressed air pipe and the pneumatic drainage device. The middle part of the pneumatic control pipe extends into the interior of the water storage tank and a solenoid valve is provided on its outer wall. A second float ball is provided inside the water storage tank, located directly below the solenoid valve.

[0008] As a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, the drain valve includes an upper plug plate and a lower plug plate, and a plurality of positioning screws are fixedly connected between the upper plug plate and the lower plug plate. The lower plug plate is slidably connected to the outer wall of the U-shaped elbow.

[0009] As a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, a tie rod is fixedly connected to the outer wall of the rotating shaft at an angle of 135-150 degrees to the rigid connecting rod, and a connecting chain is fixedly connected between the tie rod and the drain valve.

[0010] In a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, a limiting shaft is fixedly connected between the solenoid valve and the bottom of the water tank, the second float is movably sleeved on the outer wall of the limiting shaft, and two pull ropes are fixedly connected between the second float and the solenoid valve.

[0011] As a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, the water suction pipe is provided with a filter screen inside.

[0012] As a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, a flow meter is installed on the pipeline between the pneumatic drainage equipment and the drainage pipe.

[0013] As a preferred embodiment of the float-type automatic pneumatic drainage device of this utility model, the outer wall of the water inlet pipe is provided with a backflow bend.

[0014] The beneficial effects of this utility model are:

[0015] This device achieves non-ground drainage of goaf areas through the seamless coordination of float mechanical linkage and solenoid valve pneumatic control. It can control the amount of water discharged, monitor the water level in the goaf area, and achieve fully automatic start and stop without the need for electricity. This avoids the risks of water pump blockage and gas leakage. The closed design of the water tank, combined with the double protection of U-shaped elbows and backflow elbows, significantly improves drainage efficiency and safety, while reducing compressed air consumption and equipment wear. It is suitable for complex underground coal mine environments. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a structural diagram of the present utility model;

[0018] Figure 2 This is an enlarged structural diagram of part a of this utility model;

[0019] Figure 3 This is an enlarged structural diagram of the drain valve of this utility model.

[0020] The markings in the diagram are: 1. Water tank; 2. Inlet pipe; 3. U-bend; 4. Drain valve; 5. Upper plug; 6. Lower plug; 7. Positioning screw; 8. Rotating shaft; 9. Rigid connecting rod; 10. First float; 11. Pneumatic drainage device; 12. Suction pipe; 13. Drain pipe; 14. Pneumatic control pipe; 15. Solenoid valve; 16. Limiting shaft; 17. Second float; 18. Pull rope; 19. Connecting chain; 20. Flow meter; 21. Backflow elbow; 22. Compressed air pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-3 A float-type automatic pneumatic drainage device, comprising:

[0023] The water storage component includes a water storage tank 1, with a water inlet pipe 2 connected to the bottom of the water storage tank 1. The other end of the water inlet pipe 2 is connected to the water accumulation in the external coal mine goaf area. A U-shaped elbow 3 is connected to one end of the water inlet pipe 2 inside the water storage tank 1.

[0024] The drainage assembly includes a drainage valve 4 installed on the U-shaped elbow 3, a rotating shaft 8 rotatably connected to the inner wall of the water storage tank 1, and a first float 10 fixedly connected to the outer wall of the rotating shaft 8 by a rigid connecting rod 9.

[0025] The drainage assembly includes a pneumatic drainage device 11, a drain pipe 13, and a compressed air pipe 22 installed on the top of the water storage tank 1. The outlet end of the pneumatic drainage device 11 is connected to the drain pipe 13, and the inlet end of the pneumatic drainage device 11 is connected to a suction pipe 12 extending into the interior of the water storage tank 1. A pneumatic control pipe 14 is connected between the compressed air pipe 22 and the pneumatic drainage device 11. The middle part of the pneumatic control pipe 14 extends into the interior of the water storage tank 1 and a solenoid valve 15 is provided on its outer wall. A second float ball 17 located directly below the solenoid valve 15 is provided inside the water storage tank 1.

[0026] In this embodiment: Water accumulated in the goaf enters the water storage tank 1 through the inlet pipe 2. The U-shaped bend 3 and the backflow bend 21 at the end of the inlet pipe form a water seal, effectively blocking the backflow of harmful gases. When the water level rises, the first float 10 rises with the water level and drives the rotating shaft 8 to rotate via the rigid connecting rod 9. At this time, through the pull rod, connecting chain 19, and the gravity of the drain valve 4 itself, the lower plug 6 slides downward along the U-shaped bend 3, thereby closing the drain valve 4 to reduce water inflow. Simultaneously, the second float 17 in the water storage tank 1 rises with the water level, and the magnetic valve 15 is no longer pulled downward by the pull rope 18, thus triggering the magnetic valve 15 to open. Compressed air enters the pneumatic drainage device 11 through the compressed air pipe 22 and the pneumatic control pipe 14, driving it to draw water from the water storage tank through the suction pipe 12. The accumulated water inside is filtered through a filter screen and discharged through a drain pipe 13. The drainage volume is monitored in real time by a flow meter 20. When the water level drops, the first float 10 falls back, the rotating shaft 8 reverses, and the pull rod and connecting chain 19 rise, thereby driving the drain valve 4 to reopen for water intake. At the same time, the second float 17 falls back, driving the solenoid valve 15 to close and cut off the air supply through the pull rope 18, and the pneumatic drainage equipment 11 stops operating. This device achieves fully automatic start and stop through the seamless cooperation of the float mechanical linkage and the solenoid valve pneumatic control, without the need for power intervention, avoiding the risk of water pump blockage and gas leakage. The closed design of the water tank, combined with the double protection of the U-shaped elbow and the backflow elbow, significantly improves drainage efficiency and safety, while reducing compressed air consumption and equipment wear. It is suitable for the complex environment of underground coal mines.

[0027] As a technical optimization of this utility model, the drain valve 4 includes an upper plug plate 5 and a lower plug plate 6. Multiple positioning screws 7 are fixedly connected between the upper plug plate 5 and the lower plug plate 6, and the lower plug plate 6 is slidably connected to the outer wall of the U-shaped elbow 3.

[0028] In this embodiment: multiple positioning screws 7 are fixedly connected between the upper blocking plate 5 and the lower blocking plate 6. The lower blocking plate 6 is slidably connected to the outer wall of the U-shaped elbow 3. The first float ball 10 drives the pull rod to swing. The pull rod, in conjunction with the connecting chain 19, controls the lower blocking plate 6 to rise and fall, thereby controlling the opening and closing of the drain valve 4.

[0029] As a technical optimization of this utility model, a tie rod is fixedly connected to the outer wall of the rotating shaft 8 at an angle of 135-150 degrees to the rigid connecting rod 9, and a connecting chain 19 is fixedly connected between the tie rod and the drain valve 4.

[0030] In this embodiment: the rotating shaft 8 is connected to the drain valve 4 at an angle of 135-150 degrees via a pull rod and a connecting chain 19. When the float rises and falls, the rotating shaft rotates and drives the pull rod, which transmits tension through the chain to control the opening and closing of the drain valve.

[0031] As a technical optimization of this utility model, a limiting shaft 16 is fixedly connected between the inner bottom of the solenoid valve 15 and the water tank 1, the second float 17 is movably sleeved on the outer wall of the limiting shaft 16, and two pull ropes 18 are fixedly connected between the second float 17 and the solenoid valve 15.

[0032] In this embodiment: the limiting shaft 16 limits the second float 17 so that it can only move up and down in the vertical direction, and the pull rope 18 facilitates the pulling of the control solenoid valve 15.

[0033] As a technical optimization of this utility model, a filter screen is provided inside the water suction pipe 12.

[0034] In this embodiment, a filter screen is installed inside the suction pipe 12. When the pneumatic pump of the pneumatic drainage device 11 pumps water, the filter screen intercepts coal slurry and debris, preventing them from entering the pump body, directly reducing the risk of suction port blockage, reducing equipment failure rate, extending the maintenance cycle of the pneumatic pump, and ensuring continuous and stable operation of the drainage system.

[0035] As a technical optimization of this utility model, a flow meter 20 is installed on the pipeline between the wind-driven drainage device 11 and the drainage pipe 13.

[0036] In this embodiment, a flow meter 20 is installed on the pipeline between the pneumatic drainage device 11 and the drainage pipe 13 to monitor the drainage volume in real time and generate data. By quantifying the drainage efficiency, the flow meter helps to optimize the drainage strategy, provides data support for equipment maintenance and safety management, and can also provide early warning of abnormal drainage conditions, thereby improving the system's intelligence level.

[0037] As a technical optimization of this utility model, the outer wall of the water inlet pipe 2 is provided with a backflow bend 21.

[0038] In this embodiment: a backflow bend 21 is added to the outer wall of the water inlet pipe 2, forming a double liquid seal structure with the U-shaped bend 3 inside the water storage tank 1, which further blocks the backflow of harmful gases in the goaf area, strengthens airtight protection, avoids safety hazards caused by gas leakage, and reduces the risk of water pollution in the water tank.

[0039] The working principle and usage process of this utility model: Water accumulated in the goaf enters the water storage tank 1 through the inlet pipe 2. The U-shaped bend 3 and the backflow bend 21 at the end of the inlet pipe form a water seal, effectively blocking the backflow of harmful gases. When the water level rises, the first float 10 rises with the water level, driving the rotating shaft 8 to rotate via the rigid connecting rod 9. At this time, through the pull rod, connecting chain 19, and the gravity of the drain valve 4 itself, the lower plug 6 slides downward along the U-shaped bend 3, thereby closing the drain valve 4 to reduce water inflow. Simultaneously, the second float 17 in the water storage tank 1 rises with the water level, and the solenoid valve 15 is no longer subject to the pull rope 1. The downward pull of 8 triggers the opening of the solenoid valve 15. Compressed air enters the pneumatic drainage device 11 through the compressed air pipe 22 and the pneumatic control pipe 14, driving it to draw water from the water storage tank through the suction pipe 12. After being filtered by the filter screen, the water is discharged through the drain pipe 13. The drainage volume is monitored in real time by the flow meter 20. When the water level drops, the first float 10 falls back, the rotating shaft 8 reverses, and the pull rod and connecting chain 19 rise, thereby driving the drain valve 4 to reopen and allow water to enter. At the same time, the second float 17 falls back, driving the solenoid valve 15 to close and cut off the air supply through the pull rope 18, and the pneumatic drainage device 11 stops operating.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A float-type automatic pneumatic drainage device, characterized in that: include: A water storage component, comprising a water storage tank (1), the bottom of which is connected to a water inlet pipe (2), the other end of which is connected to the water accumulation in the external coal mine goaf area, and the end of which is located inside the water storage tank (1) is connected to a U-shaped elbow (3). The water drain assembly includes a drain valve (4) installed on the U-shaped elbow (3), and a rotating shaft (8) is rotatably connected to the inner wall of the water storage tank (1). The outer wall of the rotating shaft (8) is fixedly connected to a first float (10) by a rigid connecting rod (9). The drainage assembly includes a pneumatic drainage device (11), a drain pipe (13), and a compressed air pipe (22) installed on the top of the water storage tank (1). The outlet end of the pneumatic drainage device (11) is connected to the drain pipe (13). The inlet end of the pneumatic drainage device (11) is connected to a suction pipe (12) extending into the interior of the water storage tank (1). A pneumatic control pipe (14) is connected between the compressed air pipe (22) and the pneumatic drainage device (11). The middle part of the pneumatic control pipe (14) extends into the interior of the water storage tank (1) and a solenoid valve (15) is provided on its outer wall. A second float ball (17) located directly below the solenoid valve (15) is provided inside the water storage tank (1).

2. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: The drain valve (4) includes an upper plug (5) and a lower plug (6). Multiple positioning screws (7) are fixedly connected between the upper plug (5) and the lower plug (6). The lower plug (6) is slidably connected to the outer wall of the U-shaped elbow (3).

3. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: The outer wall of the rotating shaft (8) is fixedly connected to a tie rod at an angle of 135-150 degrees to the rigid connecting rod (9), and a connecting chain (19) is fixedly connected between the tie rod and the drain valve (4).

4. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: A limiting shaft (16) is fixedly connected between the solenoid valve (15) and the bottom of the water tank (1). The second float (17) is movably sleeved on the outer wall of the limiting shaft (16). Two pull ropes (18) are fixedly connected between the second float (17) and the solenoid valve (15).

5. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: The inside of the water suction pipe (12) is equipped with a filter screen.

6. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: A flow meter (20) is installed on the pipeline between the pneumatic drainage device (11) and the drainage pipe (13).

7. The float-type automatic pneumatic drainage device according to claim 1, characterized in that: The outer wall of the water inlet pipe (2) is provided with a backflow bend (21).

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