A drainage device for coal mine geological water prevention and control
By adopting a 45° acute-angle guide surface and tapering pipe joint design in the coal mine drainage device, combined with a 10° outward-inclined sewage pipe and spiral guide ribs, the problems of sludge accumulation and low efficiency in traditional coal mine drainage devices are solved, achieving efficient sludge capture and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional coal mine drainage systems suffer from problems such as sludge accumulation, low drainage efficiency, and poor structural adaptability, resulting in high operation and maintenance costs and affecting the reliability of the prevention and control system.
The diversion guide block and tapered pipe joint with a 45° acute angle guide surface design, combined with a 10° outward-inclined sewage pipe and spiral guide ribs, form a directional splitting effect and a self-priming effect, achieving efficient capture and discharge of sewage.
It significantly improves the efficiency of waste capture, reduces the frequency of equipment maintenance, and enhances the adaptability and resistance to geological changes of the drainage system.
Smart Images
Figure CN224496523U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geological control technology, specifically to a diversion device for geological control of water in coal mines. Background Technology
[0002] In the field of coal mine geological water control, traditional drainage devices have long faced multiple technical challenges. Problems such as sludge accumulation, low drainage efficiency, and poor structural adaptability not only increase the cost of coal mine water hazard control but also seriously affect the reliability of the control system, becoming a key bottleneck restricting safe production in coal mines.
[0003] Traditional drainage channels employ a planar discharge outlet design, relying primarily on gravity settling for waste separation. However, the density of solid particles such as coal slurry and debris in coal mine water is similar to that of water, resulting in an extremely slow settling process. In actual drainage operations, these particles struggle to settle sufficiently within the limited flow path and are easily carried by the water flow. Even more challenging is the complex and variable nature of underground drainage conditions. Fluctuations in water flow velocity can cause settled particles to re-suspend and re-mix into the water, significantly reducing the effectiveness of the discharge outlet's separation. Frequent waste accumulation necessitates regular manual dredging of the drainage network, greatly increasing maintenance burden and costs. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a diversion device for geological water control in coal mines, which solves the problems mentioned in the background art.
[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:
[0006] A drainage device for geological water control in coal mines, comprising:
[0007] A water channel, wherein culverts are symmetrically arranged on both sides of the water channel, and at least one overflow outlet is provided at the upper end of the water channel, and the culverts are in fluid communication with the water channel through the overflow outlets;
[0008] A diversion guide block is set on the bottom base surface of the water channel. The diversion guide block is composed of at least two triangular prisms arranged at intervals along the water flow direction, and each triangular prism has an acute-angled guide surface.
[0009] A partition is installed inside the water channel. The partition is fixed between two adjacent diversion guide blocks by a support rod, and the height of the partition is between the top of the diversion guide block and the lower edge of the overflow port.
[0010] The bottom of the diversion guide block is provided with a sewage outlet, which forms an independent sewage system through a sewage pipe that runs through the water channel and the culvert. The sewage system and the overflow outlet form a dual-channel diversion structure.
[0011] Based on the above technical solution, the present invention can be further improved as follows.
[0012] Furthermore, the guide surface of the diversion guide block is 45°, and the sewage outlet is precisely opened at the lowest point of the intersection of the guide surfaces, forming a sewage collection hopper structure.
[0013] The beneficial effects of adopting the above-mentioned further solutions are:
[0014] The 45° acute-angle guide surface design utilizes the hydrodynamic splitting effect to force water flow into a local negative pressure zone at the confluence, causing solid particles such as coal slime and debris to directionally accumulate to the lowest point of the discharge outlet, significantly improving the efficiency of waste capture. The sludge collection hopper structure upgrades traditional planar sewage discharge to three-dimensional collection. Combined with the Venturi effect created by the tapered pipe joint, it can reduce the frequency of sewage system start-up and shutdown, and extend equipment maintenance cycles.
[0015] Furthermore, the drain pipe is connected to the drain outlet via a flange-sealed reducing pipe joint.
[0016] The beneficial effects of adopting the above-mentioned further solutions are:
[0017] The tapered pipe joint generates a pressure difference through a sudden change in the cross-sectional area of the flow channel, creating a self-priming effect when waste is discharged, preventing waste from accumulating and clogging at the connection. The flange sealing structure ensures a rigid connection between the drain pipe and the diversion guide block while facilitating quick disassembly and cleaning.
[0018] Furthermore, the sewage pipe is inclined outward at an angle of 10°, and the inner wall of the sewage pipe is provided with spiral guide ribs.
[0019] The beneficial effects of adopting the above-mentioned further solutions are:
[0020] The 10° outward tilt design allows waste to automatically slide towards the pipe opening under the influence of gravity. Combined with the spiral flow generated by the spiral guide ribs, this creates a complex motion pattern of propulsion, rolling, and discharge. Compared to a straight pipe design, this structure effectively improves waste conveying efficiency. At the same time, the continuous scraping action of the spiral ribs on the pipe wall reduces adhesion and deposition, significantly reducing the frequency of high-pressure flushing.
[0021] Furthermore, the cross-section of the water channel is an inverted trapezoidal structure, and the edge of the overflow outlet is provided with a guiding slope.
[0022] The beneficial effects of adopting the above-mentioned further solutions are:
[0023] The inverted trapezoidal cross-section increases the wetted perimeter to enhance flow capacity, while the narrow space at the bottom strengthens the sedimentation effect. The overflow outlet guide slope transforms liquid surface fluctuations into directional flow. When the inflow volume changes abruptly, the liquid level rises to the lower edge of the overflow outlet and discharge is initiated, forming a dynamic water level balance mechanism. This avoids the risk of backflow of clean water caused by eddies generated by traditional right-angled edges.
[0024] Furthermore, the culvert is arranged in parallel with the water channel.
[0025] The beneficial effects of adopting the above-mentioned further solutions are:
[0026] The parallel arrangement of the structure allows the culverts and water channels to share the foundation bearing capacity, and the parallel design of the flow channels enables modular expansion of the drainage system. When the geological conditions of the coal mine change, the drainage capacity can be quickly adjusted by increasing or decreasing the number of culverts, while avoiding stress concentration problems caused by the cross arrangement, significantly enhancing the overall structure's resistance to foundation settlement.
[0027] This utility model provides a drainage device for geological water control in coal mines. It has the following beneficial effects:
[0028] The diversion guide block adopts a 45° acute-angle guide surface design, utilizing fluid dynamics principles to create a directional splitting effect. A local negative pressure zone is generated at the intersection of the guide surfaces, forcing solid particles such as coal slurry and debris to accumulate at the lowest point. The sewage outlet is precisely positioned at the lowest point of the guide surface intersection, forming a sewage collection hopper structure, which, combined with a tapering pipe joint, enhances the sewage capture capacity. The independent sewage system, through a 10° outward-inclined sewage pipe and spiral guide ribs, accelerates the discharge of sewage under the combined action of gravity and centrifugal force, effectively preventing sewage backflow and secondary deposition, solving the industry problem of easy siltation in traditional water channels.
[0029] The triangular prism-shaped diversion guide blocks, arranged in multiple stages, divide the main channel into multiple parallel water flows. The 45° guide surface ensures a smooth water flow transition while avoiding turbulence caused by right-angle structures. Spiral guide ribs on the inner wall of the sewage pipe create a spiral flow pattern, keeping waste in a rolling state during transport and reducing the risk of adhesion to the pipe wall. The inverted trapezoidal flow channel cross-section design increases the wetted perimeter to enhance flow capacity, while utilizing the narrow space at the bottom to strengthen waste settling, achieving a balance between drainage efficiency and self-cleaning capability. Attached Figure Description
[0030] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.
[0031] In the attached diagram:
[0032] Figure 1 This is a schematic diagram of the main appearance of the present utility model;
[0033] Figure 2 This is a schematic diagram showing the partition of this utility model in disassembled state;
[0034] Figure 3 This is a cross-sectional structural diagram of the diversion guide block of this utility model;
[0035] Figure 4 This is a cross-sectional view of the support rod of this utility model.
[0036] The attached diagram lists the components represented by each number as follows:
[0037] 1. Water channel; 101. Overflow outlet; 102. Underground channel; 103. Support rod; 2. Diversion guide block; 201. Sewage outlet; 202. Sewage pipe; 3. Partition. Detailed Implementation
[0038] 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.
[0039] Please see Figures 1 to 4 As shown, the embodiments provided by this utility model are as follows:
[0040] Example 1
[0041] A drainage device for geological water control in coal mines, comprising:
[0042] Water channel 1, with culverts 102 symmetrically arranged on both sides of water channel 1, and at least one overflow outlet 101 opened at the upper end of water channel 1, and culverts 102 are in fluid communication with water channel 1 through overflow outlet 101;
[0043] The diversion guide block 2 is set on the bottom base of the water channel 1. The diversion guide block 2 is composed of at least two triangular prisms arranged at intervals along the water flow direction, and each triangular prism has an acute-angled guide surface.
[0044] A partition 3 is installed inside the water channel 1. The partition 3 is fixed between two adjacent diversion guide blocks 2 by a support rod 103, and the height of the partition 3 is between the top of the diversion guide block 2 and the lower edge of the overflow port 101.
[0045] The bottom of the diversion guide block 2 is provided with a sewage outlet 201. The sewage outlet 201 forms an independent sewage system through the sewage pipe 202 that runs through the water channel 1 and the culvert 102. The sewage system and the overflow outlet 101 form a dual-channel diversion structure.
[0046] Example 2
[0047] To further enhance the device's dirt capture capability and the stability of the sewage system, for example, such as Figures 1 to 4 As shown, this utility model also includes:
[0048] The guide surface of the diversion guide block 2 is 45°, and the drain outlet 201 is precisely located at the lowest point of the intersection of the guide surfaces, forming a sludge collection hopper structure. The 45° acute angle guide surface design, through the hydrodynamic splitting effect, forces the water flow to form a local negative pressure zone at the intersection, causing solid particles such as coal slurry and debris to directionally accumulate to the lowest point of the drain outlet 201, significantly improving the sludge capture efficiency. The sludge collection hopper structure upgrades traditional planar sludge discharge to three-dimensional collection. Combined with the Venturi effect formed by the tapered pipe joint, it can reduce the frequency of start-up and shutdown of the sludge discharge system and extend the equipment maintenance cycle. The drain pipe 202 is connected to the drain outlet 201 through a tapered pipe joint with a flange seal. The tapered pipe joint generates a pressure difference through the sudden change in the cross-sectional area of the flow channel, forming a self-priming effect when sludge is discharged, preventing sludge from accumulating and clogging at the connection. The flange sealing structure ensures both a rigid connection between the drain pipe 202 and the diversion guide block 2 and facilitates quick disassembly and cleaning. The drain pipe 202 is inclined outward at an angle of 10°. The inner wall of the drain pipe 202 is equipped with spiral guide ribs. The 10° outward inclination angle allows waste to automatically slide towards the pipe opening under the influence of gravity. Combined with the spiral flow generated by the spiral guide ribs, this creates a complex motion pattern of propulsion, rolling, and discharge. Compared to a straight pipe design, this structure effectively improves waste transport efficiency. Simultaneously, the continuous scraping action of the spiral ribs on the pipe wall reduces adhesion and deposition, significantly decreasing the frequency of high-pressure flushing.
[0049] Example 3
[0050] To optimize the flow capacity and resistance to geological changes of the device, for example, such as Figures 1 to 4 As shown, this utility model also includes:
[0051] The cross-section of water channel 1 is an inverted trapezoid, and the overflow outlet 101 has a guide slope at its edge. The inverted trapezoidal cross-section increases the flow capacity by increasing the wetted perimeter, while the narrow space at the bottom enhances the sedimentation effect. The guide slope of the overflow outlet 101 transforms the liquid surface fluctuation into directional flow. When the inflow of water changes abruptly, the liquid level rises to the lower edge of the overflow outlet 101, triggering the discharge and forming a dynamic water level balance mechanism. This avoids the risk of backflow of clear water caused by eddies generated by traditional right-angled edges. The culvert 102 is arranged parallel to water channel 1. The parallel arrangement allows culvert 102 and water channel 1 to share the foundation bearing capacity. The parallel channel design enables modular expansion of the drainage system. When the geological conditions of the coal mine change, the drainage capacity can be quickly adjusted by increasing or decreasing the number of culverts 102, while avoiding stress concentration problems caused by the cross arrangement, significantly enhancing the overall structure's resistance to foundation settlement.
[0052] Working principle:
[0053] When water enters the canal 1, it first contacts the diversion guide blocks 2. These triangular prisms, with their 45° acute-angle guide surfaces, split the water flow into two streams, creating a directional flow effect using fluid dynamics principles. A local negative pressure is generated at the confluence of the guide surfaces, causing solid particles such as coal slurry and debris carried in the water to accumulate at the lowest point. At this point, the discharge outlet 201 acts as a sludge collection hopper, precisely capturing the sediment. The discharge pipe 202, connected via a tapered joint, forms an independent discharge channel. The discharge pipe 202 is designed with a 10° outward inclination angle, combined with spiral guide ribs on its inner wall, allowing the waste to be discharged more quickly under the combined effects of gravity and centrifugal force, preventing blockages.
[0054] Meanwhile, the upper layer of clear water after diversion is blocked by baffle 3, forming a stable liquid surface. The height of baffle 3 is set between the apex of the diversion guide block 2 and the lower edge of the overflow port 101, which not only prevents clear water from flowing back into the culvert 102, but also ensures that the liquid level reaches the overflow port 101 and is automatically discharged. The guide slope at the edge of the overflow port 101 further optimizes the water flow trajectory, so that the qualified clear water is transported in parallel to the designated area through the culvert 102. The inverted trapezoidal flow channel cross-section design increases the flow capacity by increasing the wetted perimeter, while utilizing the narrow space at the bottom to enhance the sedimentation effect of dirt.
[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A diversion device for geological water control in coal mines, characterized in that, include: A water channel (1) is provided with culverts (102) symmetrically arranged on both sides of the water channel (1). At least one overflow port (101) is provided at the upper end of the water channel (1). The culvert (102) is in fluid communication with the water channel (1) through the overflow port (101). A diversion guide block (2) is set on the bottom base surface of the water channel (1). The diversion guide block (2) is composed of at least two triangular prisms arranged at intervals along the water flow direction, and each triangular prism has an acute-angled guide surface. A partition (3) is installed inside the water channel (1). The partition (3) is fixed between two adjacent diversion guide blocks (2) by a support rod (103), and the height of the partition (3) is between the top of the diversion guide block (2) and the lower edge of the overflow port (101). The bottom of the diversion guide block (2) is provided with a sewage outlet (201). The sewage outlet (201) forms an independent sewage system through the sewage pipe (202) that runs through the water channel (1) and the culvert (102). The sewage system and the overflow outlet (101) form a dual-channel diversion structure.
2. The water diversion device for geological control in coal mines according to claim 1, characterized in that: The guide surface of the diversion guide block (2) is 45°, and the sewage outlet (201) is precisely opened at the lowest point of the intersection of the guide surfaces to form a sewage collection hopper structure.
3. The drainage device for geological water control in coal mines according to claim 1, characterized in that: The drain pipe (202) is connected to the drain outlet (201) through a flange-sealed tapered pipe joint.
4. The water diversion device for geological control in coal mines according to claim 1, characterized in that: The sewage pipe (202) is inclined to the outside at an angle of 10°, and the inner wall of the sewage pipe (202) is provided with spiral guide ribs.
5. The water diversion device for geological control in coal mines according to claim 1, characterized in that: The cross-section of the water channel (1) is an inverted trapezoidal structure, and the overflow port (101) is provided with a guide slope at its edge.
6. The water diversion device for geological control in coal mines according to claim 1, characterized in that: The culvert (102) is arranged in parallel with the water channel (1).