Coal mine roadway excavation drainage system
By designing a coal mine roadway excavation drainage device with multiple filtration and lifting components, the problems of pump wear and water accumulation caused by impurities in the seepage water in the roadway were solved, thereby extending the equipment life and improving the working environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN CHUXIANG CONSTR ENG GRP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-30
AI Technical Summary
During the tunneling process in coal mines, the water seeping out of the tunnels contains a large number of impurities, which can easily lead to wear and blockage of water pumps, shorten their service life, increase maintenance costs and downtime, and the accumulation of water in the tunnels affects the working environment and safety.
A drainage device for coal mine roadway excavation was designed, comprising a protective cylinder, a filter assembly, and a lifting assembly. It intercepts large pieces of coal slag and rock debris through a multi-stage filtration system, filters out fine impurities through a filter screen, and cleans the filter screen impurities through a rotating mechanism. Combined with the lifting assembly, it adapts to different water depths to ensure pumping efficiency.
It effectively prevents impurities from entering the water pump, reduces the probability of pump impeller wear and blockage, extends equipment service life, reduces maintenance costs and downtime, ensures timely drainage of water in the tunnel, and improves the working environment and safety.
Smart Images
Figure CN224432616U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel drainage technology, specifically a drainage device for coal mine tunnel excavation. Background Technology
[0002] During the excavation of coal mine roadways, since the roadways are mostly located deep underground, water will continuously seep out from the rock mass. If this water cannot be drained in a timely and effective manner, it will cause many serious problems for the excavation work. On the one hand, the water will make the working environment in the roadway harsh, increase the risk of workers slipping and getting injured, and reduce work efficiency. On the other hand, prolonged soaking of the surrounding rock by water will weaken the stability of the surrounding rock, which can easily lead to roadway collapses and other safety accidents, seriously threatening the lives of underground workers and the smooth progress of coal mine production.
[0003] Currently, the most common drainage method in coal mine roadway excavation is water pump drainage. However, the water seeping out of the roadway usually contains a large number of impurities, such as coal slag and rock fragments. These impurities can easily enter the water pump during the drainage process, causing wear and blockage of the pump impeller, or even damage to the pump. This greatly shortens the service life of the pump and increases equipment maintenance costs and downtime. Therefore, it is urgent to design a drainage device for coal mine roadway excavation to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a drainage device for coal mine roadway excavation to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A coal mine roadway excavation and drainage device includes a frame. A water storage tank is fixedly installed on the top of the frame, and a pumping component is fixedly installed on the top of the water storage tank and one end of the top of the frame. A lifting component is also installed on one end of the top of the frame, and a protective cylinder is fixedly installed at the bottom of the lifting component. A filter component is installed inside the protective cylinder, and a rotating mechanism for driving the filter component to rotate is installed on the top of the protective cylinder. First water inlet grooves are evenly spaced and distributed in a ring around the circumference of the protective cylinder, and first baffles are fixedly installed on the inner walls of the first water inlet grooves.
[0007] Furthermore, the bottom of the protective cylinder has multiple rows of equally spaced second water inlet grooves, and the inner wall of each second water inlet groove is fixedly equipped with a second baffle. The diameter of the second baffle is smaller than the width of the second water inlet groove, and the diameter of the first baffle is smaller than the width of the first water inlet groove.
[0008] Furthermore, the water pumping assembly includes a water pump fixedly installed at one end of the top of the vehicle frame, and a water delivery pipe inserted into a water storage tank is fixedly installed at the drain end of the water pump. A water pumping pipe is fixedly installed in the middle of the protective cylinder, and a connecting pipe is fixedly installed at the water pumping end. A corrugated pipe is fixedly installed at the bottom end of the connecting pipe and the top end of the water pumping pipe.
[0009] Furthermore, the lifting assembly includes a support frame fixed to one end of the top of the vehicle frame, and an electric push rod is fixedly installed at the top end of the support frame. A lifting frame is fixedly installed at the piston end of the electric push rod and the top of the protective cylinder. Guide columns are fixed at both ends of one side of the bottom of the support frame, and a sliding groove is opened on one side of each guide column. Sliding seats that are slidably disposed in the sliding grooves are fixedly installed on both sides of the lifting frame.
[0010] Furthermore, the filter assembly includes a filter bucket rotatably connected to the protective cylinder via a bearing, and the filter bucket has filter openings evenly distributed around its circumference. Filter screens are fixedly installed on the inner walls of the filter openings. Cleaning scrapers are fixedly installed on the inner wall of the protective cylinder at equal intervals and attached to the filter screens and the circumference of the filter bucket. An annular disc is fixedly installed on the top of the inner wall of the filter bucket, and the inner wall of the annular disc is rotatably connected to the outer wall of the water pump pipe via a bearing.
[0011] Furthermore, the rotating mechanism includes a gear ring fixedly installed on the top of the inner wall of the filter bucket, and a drive gear meshes with the inner wall of the gear ring. A motor for driving the drive gear to rotate is fixedly installed on the top of the protective cylinder.
[0012] Furthermore, each of the four corners of the bottom of the frame is equipped with a movable wheel, and a traction seat is fixedly installed at one end of the frame.
[0013] Furthermore, a control box is installed at one corner of the water storage tank, and a controller and a battery are installed on the control box. A drain pipe is fixed at one end of the water storage tank, and a drain valve is installed at one end of the drain pipe. A detection slot is opened on one side of the water storage tank, and a liquid level sensor is fixedly installed on the inner wall of the detection slot. The liquid level sensor, controller, battery, drain valve, water pump and motor are electrically connected.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, the first and second water inlets of the protective cylinder, in conjunction with the first and second baffles respectively, can initially intercept large pieces of coal slag and rock debris. The internal filter bucket and filter screen can further filter fine impurities. When the rotating mechanism drives the filter bucket to rotate, the cleaning scraper can promptly clean the attached impurities on the filter screen to avoid clogging. This multi-layer filtration system effectively prevents impurities from entering the water pump, significantly reduces the probability of pump impeller wear and clogging, extends the service life of the equipment, and reduces maintenance costs and downtime.
[0016] In this invention, the design of the lifting component allows the protective cylinder to be flexibly adjusted in depth, adapting to different water depths in tunnel environments, ensuring that the pumping component always efficiently absorbs water and promptly alleviates the problem of water accumulation in tunnels. Attached Figure Description
[0017] Figure 1 This is a three-dimensional diagram of a drainage system for coal mine roadway excavation.
[0018] Figure 2 This is a schematic diagram of the pumping and lifting components of a drainage system for coal mine roadway excavation.
[0019] Figure 3 This is a schematic diagram of the chute and slide block structure of a drainage device for coal mine roadway excavation.
[0020] Figure 4 This is a schematic diagram of the filter bucket and rotating mechanism of a drainage device for coal mine roadway excavation.
[0021] Figure 5 This is a front sectional view of the filter bucket of a drainage device for coal mine roadway excavation.
[0022] In the diagram: 1. Chassis; 2. Liquid level sensor; 3. Water tank; 4. Controller; 5. Traction seat; 6. Pumping assembly; 61. Water pump; 62. Water delivery pipe; 63. Corrugated pipe; 64. Connecting pipe; 65. Pumping pipe; 7. Lifting assembly; 71. Support frame; 72. Electric push rod; 73. Guide column; 74. Lifting frame; 75. Slide groove; 76. Slide seat; 8. Protective cylinder; 9. First water inlet trough; 10. First stop bar; 11. Drain pipe; 12. Rotating mechanism; 121. Gear ring; 122. Drive gear; 123. Motor; 13. Filter hopper; 14. Cleaning scraper; 15. Second water inlet trough; 16. Second stop bar; 17. Filter screen; 18. Annular disc. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-5In this embodiment of the utility model, the coal mine roadway excavation and drainage device includes a frame 1. A water storage tank 3 is fixedly installed on the top of the frame 1, and a pumping assembly 6 is fixedly installed on the top of the water storage tank 3 and one end of the top of the frame 1. A lifting assembly 7 is also installed on one end of the top of the frame 1, and a protective cylinder 8 is fixedly installed at the bottom of the lifting assembly 7. A filter assembly is provided inside the protective cylinder 8. The filter assembly includes a filter bucket 13 rotatably connected to the protective cylinder 8 via a bearing. Filter openings are evenly distributed around the circumference of the filter bucket 13. Filter screens 17 are fixedly installed on the inner walls of the filter openings. Cleaning scrapers 14 are fixedly installed on the inner wall of the protective cylinder 8 at equal intervals and attached to the circumference of the filter screens 17 and the filter bucket 13. An annular disc 18 is fixedly installed on the top of the inner wall of the filter bucket 13. The inner wall of the annular disc 18 is rotatably connected to the outer wall of the pumping pipe 65 via a bearing. A rotating mechanism 12 for driving the filter assembly to rotate is provided on the top of the protective cylinder 8. The rotating mechanism 12 includes components fixedly installed on the inner wall of the filter bucket 13. A gear ring 121 is located at the top, and a drive gear 122 meshes with the inner wall of the gear ring 121. A motor 123 for driving the drive gear 122 to rotate is fixedly installed at the top of the protective cylinder 8. First water inlet grooves 9 are evenly spaced and arranged in a ring around the circumference of the protective cylinder 8, and first stop rods 10 are fixedly installed on the inner wall of each of the first water inlet grooves 9. Multiple rows of second water inlet grooves 15 are evenly spaced at the bottom of the protective cylinder 8, and second stop rods 16 are fixedly installed on the inner wall of each of the second water inlet grooves 15. The diameter of 16 is smaller than the width of the second inlet trough 15, and the diameter of the first baffle 10 is smaller than the width of the first inlet trough 9. Through the first inlet trough 9 and the second inlet trough 15 of the protective cylinder 8, in conjunction with the first baffle 10 and the second baffle 16 respectively, large pieces of coal slag and rock debris can be initially intercepted. The internal filter bucket 13 and filter screen 17 can further filter fine impurities. This multi-layer filtration system effectively prevents impurities from entering the water pump 61, significantly reduces the probability of water pump impeller wear and blockage, and extends the service life of the equipment.
[0025] Specifically, the water pumping assembly 6 includes a water pump 61 fixedly installed at one end of the top of the frame 1, and a water delivery pipe 62 inserted into the water storage tank 3 is fixedly installed at the drain end of the water pump 61. A water suction pipe 65 is fixedly installed in the middle of the protective cylinder 8, and a connecting pipe 64 is fixedly installed at the water suction end of the water pump 61. A corrugated pipe 63 is fixedly installed at the bottom end of the connecting pipe 64 and the top end of the water suction pipe 65. The water pump 61 can quickly transport the filtered water to the water storage tank 3 through the passage formed by the water suction pipe 65, the connecting pipe 64, etc., to alleviate the problem of water accumulation in the alley in a timely manner.
[0026] Specifically, the lifting assembly 7 includes a support frame 71 fixed to one end of the top of the frame 1, and an electric push rod 72 is fixedly installed at the top end of the support frame 71. A lifting frame 74 is fixedly installed at the piston end of the electric push rod 72 and the top of the protective cylinder 8. Guide columns 73 are fixed at both ends of one side of the bottom of the support frame 71, and a sliding groove 75 is opened on one side of each guide column 73. Sliding seats 76 are fixedly installed on both sides of the lifting frame 74 and are slidably disposed in the sliding groove 75. The height of the lifting frame 74 can be adjusted by the electric push rod 72 in the lifting assembly 7, so that the depth of the protective cylinder 8 can be flexibly adjusted to adapt to the tunnel environment with different water depths, and ensure that the pumping assembly 6 always absorbs water efficiently.
[0027] Specifically, the chassis 1 is equipped with four movable wheels at the bottom corners, and a traction seat 5 is fixedly installed at one end of the chassis 1. The chassis 1 can move as a whole by using the movable wheels at the bottom and the traction seat 5 in conjunction with equipment such as traction vehicles in the tunnel, thus adapting to different tunnel locations.
[0028] Specifically, a control box is installed at one corner of the water storage tank 3, and a controller 4 and a battery are installed on the control box. A drain pipe 11 is fixed at one end of the water storage tank 3, and a drain valve is installed at one end of the drain pipe 11. A detection groove is opened on one side of the water storage tank 3, and a liquid level sensor 2 is fixedly installed on the inner wall of the detection groove. The liquid level sensor 2, controller 4, battery, drain valve, water pump 61 and motor 123 are electrically connected. The water level in the water storage tank 3 is monitored through the liquid level sensor 2, so that the water storage tank 3 can be moved out of the tunnel after it is full, the water can be drained and the pumping operation can continue.
[0029] The working principle of this utility model is as follows: When the device is working, the bottom moving wheel of the frame 1 and the traction seat 5 cooperate with the traction vehicle and other equipment in the roadway to achieve overall movement, adapting to different roadway positions. During operation, the electric push rod 72 in the lifting assembly 7 pushes the lifting frame 74 to slide along the slide groove 75 of the guide column 73, which drives the protective cylinder 8 to adjust its depth to adapt to the water accumulation situation. The accumulated water first enters through the first water inlet groove 9 on the circumference of the protective cylinder 8 and the second water inlet groove 15 at the bottom. The first baffle 10 and the second baffle 16 intercept large pieces of impurities.
[0030] Subsequently, the motor 123 of the rotating mechanism 12 drives the drive gear 122 to rotate, and the meshing gear ring 121 causes the filter bucket 13 to rotate. The filter screen 17 at its circumference filters out fine impurities, and the cleaning scraper 14 on the inner wall of the protective cylinder 8 simultaneously cleans the impurities attached to the filter screen to prevent clogging. The filtered water is sucked in by the water pumping pipe 65, passes through the corrugated pipe 63 and the connecting pipe 64 into the water pumping assembly 6, and is then transported to the water storage tank 3 through the water delivery pipe 62. The water level sensor 2 of the water storage tank 3 monitors the water volume. When the set value is reached, the controller 4 controls the water pump 61 and the motor 123 to shut down, and the entire water storage tank 3 is moved out of the tunnel. The water is then discharged through the drain pipe 11 before the tunnel drainage treatment is carried out.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.
Claims
1. A coal mine roadway excavation and drainage device, comprising a chassis (1), characterized in that: A water tank (3) is fixedly installed on the top of the frame (1), and a water pumping assembly (6) is fixedly installed on the top of the water tank (3) and one end of the top of the frame (1). A lifting assembly (7) is also installed on one end of the top of the frame (1), and a protective cylinder (8) is fixedly installed at the bottom of the lifting assembly (7). A filter assembly is provided inside the protective cylinder (8), and a rotating mechanism (12) for driving the filter assembly to rotate is provided on the top of the protective cylinder (8). A first water inlet groove (9) is provided at equal intervals and distributed in a ring on the circumference of the protective cylinder (8), and a first stop bar (10) is fixedly installed on the inner wall of the first water inlet groove (9).
2. The coal mine roadway excavation and drainage device according to claim 1, characterized in that: The bottom of the protective cylinder (8) has multiple rows of equally spaced second water inlet grooves (15), and the inner wall of each second water inlet groove (15) is fixedly equipped with a second baffle (16). The diameter of the second baffle (16) is smaller than the width of the second water inlet groove (15), and the diameter of the first baffle (10) is smaller than the width of the first water inlet groove (9).
3. The coal mine roadway excavation and drainage device according to claim 2, characterized in that: The water pumping assembly (6) includes a water pump (61) fixedly installed at one end of the top of the frame (1), and a water delivery pipe (62) inserted into the water storage tank (3) is fixedly installed at the drain end of the water pump (61). A water pumping pipe (65) is fixedly installed in the middle of the protective cylinder (8), and a connecting pipe (64) is fixedly installed at the water pump (61). A corrugated pipe (63) is fixedly installed at the bottom end of the connecting pipe (64) and the top end of the water pumping pipe (65).
4. The coal mine roadway excavation and drainage device according to claim 3, characterized in that: The lifting assembly (7) includes a support frame (71) fixed to one end of the top of the frame (1), and an electric push rod (72) is fixedly installed at one end of the top of the support frame (71). A lifting frame (74) is fixedly installed at the piston end of the electric push rod (72) and the top of the protective cylinder (8). Guide columns (73) are fixed at both ends of one side of the bottom of the support frame (71), and a sliding groove (75) is opened on one side of each guide column (73). Sliding seats (76) are fixedly installed on both sides of the lifting frame (74) and are slidably disposed in the sliding groove (75).
5. The coal mine roadway excavation and drainage device according to claim 4, characterized in that: The filter assembly includes a filter bucket (13) rotatably connected to the protective cylinder (8) via a bearing, and the filter bucket (13) has filter openings evenly distributed around its circumference. The inner walls of the filter openings are all fixedly fitted with filter screens (17). The inner wall of the protective cylinder (8) is fixedly fitted with cleaning scrapers (14) that are evenly attached to the filter screens (17) and the circumference of the filter bucket (13). The top of the inner wall of the filter bucket (13) is fixedly fitted with an annular disc (18). The inner wall of the annular disc (18) is rotatably connected to the outer wall of the water pumping pipe (65) via a bearing.
6. The coal mine roadway excavation and drainage device according to claim 5, characterized in that: The rotating mechanism (12) includes a gear ring (121) fixedly installed on the top of the inner wall of the filter bucket (13), and a drive gear (122) meshes with the inner wall of the gear ring (121). A motor (123) for driving the drive gear (122) to rotate is fixedly installed on the top of the protective cylinder (8).
7. The coal mine roadway excavation and drainage device according to claim 1, characterized in that: The frame (1) is equipped with four movable wheels at the bottom corners, and a traction seat (5) is fixedly installed at one end of the frame (1).
8. The coal mine roadway excavation and drainage device according to claim 6, characterized in that: A control box is installed at one corner of the water storage tank (3), and a controller (4) and a battery are installed on the control box. A drain pipe (11) is fixed at one end of the water storage tank (3), and a drain valve is installed at one end of the drain pipe (11). A detection groove is opened on one side of the water storage tank (3), and a liquid level sensor (2) is fixedly installed on the inner wall of the detection groove. The liquid level sensor (2), controller (4), battery, drain valve, water pump (61) and motor (123) are electrically connected.