An automatic drainage device for coal mine water collection pits

Abstract

This utility model discloses an automatic drainage device for coal mine sump pits, including a pump body and a drain seat. The drain seat is fixed at the bottom of the pump body, and the device also includes a connecting ring and a flow-through mechanism. The connecting ring is welded to the bottom of the drain seat. By setting the connecting ring and the flow-through mechanism at the pump body, the flow-through mechanism forms a structure surrounding the pump body with a cylinder and a vertical branch pipe. The cylinder can be installed in the coal mine sump pit. The conical stepped ring of the vertical branch pipe and the downward inclined inner annular ring of the cylinder form an alternating flow channel, guiding the accumulated water in the sump pit from above the sediment layer at the bottom of the pit into the area between the vertical branch pipe and the cylinder. This avoids the low-level accumulated water carrying the sediment from the bottom of the pit directly contacting the bottom inlet of the pump body, effectively ensuring that the pump body can cleanly suck in the accumulated water for stable pumping.

Description

Technical Field

[0001] This utility model relates to the field of drainage technology for coal mine sump pits, and in particular to an automatic drainage device for coal mine sump pits. Background Technology

[0002] In coal mine production, underground water (such as roof water, equipment cooling water, and coal seam seepage water) flows into the sump pit through drainage ditches. If not drained in time, it may cause risks such as mine flooding, equipment damage, and disruption of operational safety. The core of the automatic drainage system for coal mine sump pits is to achieve unattended, on-demand drainage through closed-loop control of "water level sensing - logical judgment - automatic execution - fault warning".

[0003] Currently, when automatically draining coal mine sump pits, submersible pumps with integrated float switches are installed inside the pit and used in conjunction with pipelines to automatically pump water under set liquid level conditions. However, silt often enters the water pit at the bottom of the submersible pump. Although some submersible pumps have grates or filter-type interception structures installed at the water inlet, these structures are too close to the silt deposition points at the bottom of the pit and are easily blocked by the deposited silt, resulting in poor water inlet stability for the submersible pump used for automatic drainage of coal mine sump pits. To address this, we propose an automatic drainage device for coal mine sump pits. Utility Model Content

[0004] The main objective of this invention is to provide an automatic drainage device for coal mine sump pits. By installing a connecting ring and a flow-through mechanism at the pump body, the flow-through mechanism, with a container and a vertical distribution pipe forming a structure surrounding the pump body, allows the container to be installed inside the coal mine sump pit. The conical stepped ring of the vertical distribution pipe and the downward-sloping inner annular ring of the container form an alternating flow channel, guiding the accumulated water in the sump pit from above the sediment layer at the bottom of the pit into the area between the vertical distribution pipe and the container. This prevents low-level accumulated water from carrying sediment from the bottom of the pit directly into the bottom inlet of the pump body, effectively ensuring that the pump body can cleanly draw in accumulated water for stable pumping. Furthermore, the vertical distribution pipe and the container form a double isolation space, allowing only the upper layer of accumulated water with a low sediment content, after preliminary sedimentation, to enter the interior of the container through the overflow holes of the stepped ring and the conical cover ring. This effectively ensures a significant improvement in the cleanliness of the water drawn in by the pump body, reducing the interference of sediment on the pump body and effectively solving the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic drainage device for a coal mine sump includes a pump body and a drain seat. The drain seat is fixed at the bottom of the pump body. The device also includes a connecting ring and a flow-through mechanism. The connecting ring is welded to the bottom of the drain seat. The flow-through mechanism includes a container, a fixed column, a fork, a conical rim ring, a stepped ring, a vertical branch pipe, a downward-sloping inner ring, and a conical stepped ring. Fixed columns are symmetrically welded to the inner wall of the bottom of the container, and a connecting ring is fitted to the outside of the fixed column. The drain seat and the pump body above the connecting ring are inserted into the container. Fork is welded at three points on the outer wall of the bottom of the container. A conical rim ring is welded to the outer wall of the container near its opening. A vertical branch pipe is welded to the inner cylinder below the conical rim ring through the stepped ring. Overflow holes are distributed in a ring on the surface of the conical rim ring and the stepped ring. A conical stepped ring covering the outside of the container is welded to the outside of the vertical branch pipe below the stepped ring. A downward-sloping inner ring is welded to the outside of the container above the conical stepped ring.

[0007] Furthermore, a fixed hole plate is integrally formed on the outer side of the ring body of the connecting ring, and a fixed post is inserted into the fixed hole of the fixed hole plate;

[0008] By adopting the above technical solution, the connecting ring and the fixed orifice plate can be adapted to fit the fixed column installed in the cylinder, so as to realize the installation of the water pump body in the cylinder.

[0009] Furthermore, the inclined rod of the fork is welded to the bottom edge of the cylinder, and a disc with a through hole on its surface is welded to the end of the inclined rod of the fork.

[0010] By adopting the above technical solution, after the fork is welded to the container with the inclined rod, the plate of the fork can be pressed into the water collection pit to obtain support, and the through hole at the plate can be driven into the water collection pit through the metal pile to fix the fork.

[0011] Furthermore, the lower inclined inner ring is inclined towards the top of the conical stepped ring outside the cylinder, and the conical stepped ring is inclined towards the bottom of the lower inclined inner ring from the vertical branch pipe.

[0012] By adopting the above technical solution, an alternating flow position is formed between the lower inclined inner ring and the conical stepped ring, so that the water in the sump can enter the container and the vertical branch pipe along the lower inclined inner ring and the conical stepped ring, and finally the water flows upward into the container along the overflow hole.

[0013] Furthermore, the cavity size of the container is larger than the pump body size of the pump body;

[0014] By adopting the above technical solution, the water pump body can be installed inside the container after the drainage pipe is installed.

[0015] Furthermore, a flow cavity is reserved between the conical edge cover ring and the stepped ring, and twelve sets of overflow holes are distributed annularly on the surfaces of the conical edge cover ring and the stepped ring.

[0016] By adopting the above technical solution, the flow cavity of the hammer edge cover ring and the stepped ring can buffer the speed of water overflowing upwards, while multiple sets of overflow holes at the hammer edge cover ring and the stepped ring can allow water to flow through.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model sets a connecting ring and a flow-through mechanism at the water pump body. The flow-through mechanism forms a structure that surrounds the water pump body with a cylinder and a vertical branch pipe. The cylinder can be installed in the coal mine water collection pit. The conical stepped ring of the vertical branch pipe and the downward inclined inner annular ring of the cylinder form an alternating flow channel, which guides the water in the water collection pit from above the mud and sand sediment layer at the bottom of the pit into the area between the vertical branch pipe and the cylinder. This avoids the low liquid level water carrying the mud and sand at the bottom of the pit from directly contacting the bottom water inlet of the water pump body, effectively ensuring that the water pump body can cleanly suck in the water and pump it out stably.

[0019] Furthermore, the vertical branch pipe and the container form a double isolation space, allowing only the upper layer of water with low sediment content that has undergone preliminary sedimentation to enter the container through the overflow holes of the stepped ring and the conical side cover ring. This effectively ensures that the cleanliness of the water sucked into the pump body is significantly improved, reducing the impact of sediment on the pump body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an automatic drainage device for a coal mine water collection pit according to the present invention.

[0021] Figure 2 This is a schematic diagram showing the disassembly of the connecting ring and the container of an automatic drainage device for a coal mine water collection pit according to this utility model.

[0022] Figure 3 This is a schematic diagram showing the disassembled drain seat and connecting ring of an automatic drainage device for coal mine water collection pits according to this utility model.

[0023] Figure 4 This is a cross-sectional exploded view of the permeation mechanism of an automatic drainage device for coal mine water collection pits according to this utility model.

[0024] In the diagram: 1. Pump body; 2. Leak seat; 3. Connecting ring; 4. Fixed orifice plate; 5. Flow permeation mechanism; 6. Container cylinder; 7. Fixed column; 8. Fork foot; 9. Through pin hole; 10. Conical edge cover ring; 11. Stepped ring; 12. Vertical branch pipe; 13. Overflow hole; 14. Lower inclined inner ring; 15. Conical edge stepped ring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1-4As shown, an automatic drainage device for a coal mine sump includes a pump body 1 and a drain seat 2. The drain seat 2 is fixed to the bottom end of the pump body 1. The device also includes a connecting ring 3 and a flow-through mechanism 5. The connecting ring 3 is welded to the bottom of the drain seat 2. The flow-through mechanism 5 includes a container 6, fixed columns 7, fork feet 8, a conical edge cover ring 10, a stepped ring 11, a vertical branch pipe 12, a downward inclined inner ring 14, and a conical stepped ring 15. Fixed columns 7 are symmetrically welded to the inner wall of the bottom end of the container 6, and the connecting ring 3 is clamped to the outside of the fixed columns 7. The drain seat 2 and the pump are located above the connecting ring 3. The main body 1 is inserted into the container 6, and the container 6 has three fork feet 8 welded at the bottom outer wall. The container 6 has a conical edge cover ring 10 welded to the outer wall near its own opening. The inner cylinder 6 below the conical edge cover ring 10 is connected to a vertical branch pipe 12 by a stepped ring 11. Overflow holes 13 are distributed in a ring on the surface of the conical edge cover ring 10 and the stepped ring 11. A conical edge stepped ring 15 covering the outer side of the container 6 is welded to the outside of the vertical branch pipe 12 below the stepped ring 11. A downward inclined inner ring 14 is welded to the outside of the container 6 above the conical edge stepped ring 15.

[0027] Among them, the outer side of the ring 3 is integrally formed with a fixed hole plate 4, and a fixed post 7 is inserted into the fixed hole of the fixed hole plate 4.

[0028] By adopting the above technical solution, the connecting ring 3 and the fixed orifice plate 4 can be adapted to fit the fixed column 7 that is clamped in the container 6, so as to realize the installation of the water pump body 1 in the container 6.

[0029] The inclined rod of the fork 8 is welded to the bottom edge of the cylinder 6, and a disc with a through hole 9 on its surface is welded to the end of the inclined rod of the fork 8.

[0030] By adopting the above technical solution, after the fork leg 8 is welded to the container 6 with the inclined foot rod, the plate of the fork leg 8 can be pressed into the water collection pit to obtain support, and the through pin hole 9 at the plate can pass through the metal pile and be driven into the water collection pit to fix the fork leg 8.

[0031] The lower inclined inner ring 14 is located on the outside of the container 6, tilted towards the top of the conical stepped ring 15, and the conical stepped ring 15 tilts from the vertical branch pipe 12 towards the bottom of the lower inclined inner ring 14.

[0032] By adopting the above technical solution, an alternating flow position is formed between the lower inclined inner ring 14 and the conical stepped ring 15, so that the water in the sump can enter the container 6 and the vertical branch pipe 12 along the lower inclined inner ring 14 and the conical stepped ring 15, and finally the water flows upward into the container 6 along the overflow hole 13.

[0033] The cavity size of the container 6 is larger than the pump body size of the pump body 1;

[0034] By adopting the above technical solution, the water pump body 1 can be installed inside the container 6 after the drainage pipe is installed.

[0035] The conical shroud ring 10 and the stepped ring 11 have a pre-reserved flow cavity between their ring bodies, and the overflow holes 13 on the surfaces of the conical shroud ring 10 and the stepped ring 11 are provided in twelve sets in a ring-shaped distribution.

[0036] By adopting the above technical solution, the flow cavity of the hammer edge cover ring 10 and the stepped ring 11 can buffer the speed of water overflowing upwards, while multiple sets of overflow holes 13 at the hammer edge cover ring 10 and the stepped ring 11 allow water to flow through.

[0037] It should be noted that this utility model is an automatic drainage device for coal mine sump pits. By setting a connecting ring 3 and a flow-through mechanism 5 at the pump body 1, the container 6 of the flow-through mechanism 5 is pressed into the coal mine sump pit by the fork foot 8. Then, a metal pile is driven into the sump pit through the pin hole 9 of the fork foot 8 to fix the fork foot 8. Then, the pump body 1 can be pressed into the container 6 by the connecting ring 3. At the same time, the connecting ring 3 is positioned and locked in the fixed column 7 in the container 6 by the fixed hole plate 4. Then, the float switch of the pump body 1 can be normally connected to the drainage control system of the coal mine sump pit for control by the wire.

[0038] Subsequently, water can flow normally into the coal mine sump. The water flows upward between the vertical pipe 12 and the container 6 along the conical edge ring 15 and the lower inclined inner ring 14. Finally, the water flows upward into the container 6 along the overflow hole 13. As the water level in the sump gradually rises, water can also flow into the opening of the container 6. With the isolation of the container 6 and the vertical pipe 12, the mud and sand carried by the water flowing into the sump at a low liquid level are not easily sucked into the pump body 1. This effectively ensures that the pump body 1 can suck in water with low mud and sand content in the container 6 for pumping. The float switch of the pump body 1 can float normally above the container 6 for automatic drainage of the set liquid level inside the shell.

[0039] It should be noted that this utility model is an automatic drainage device for coal mine water collection pits. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine sump automatic drainage device, comprising a water pump body (1) and a drain seat (2), the bottom end of the water pump body (1) is fixed with the drain seat (2), characterized in that: It also includes a connecting ring (3) and a flow permeation mechanism (5). The connecting ring (3) is welded to the bottom of the seat of the leak base (2). The flow permeation mechanism (5) includes a container (6), a fixed column (7), a fork (8), a conical edge cover ring (10), a stepped ring (11), a vertical branch pipe (12), a downward inclined inner ring (14), and a conical edge stepped ring (15). The fixed column (7) is symmetrically welded to the inner wall of the bottom end of the container (6), and the connecting ring (3) is clamped on the outside of the fixed column (7). The leak base (2) above the connecting ring (3) and the water pump body (1) are clamped into the container (6), and the outer cylinder of the bottom end of the container (6) is... The wall is welded with three fork feet (8). The outer wall of the container (6) near its own opening is welded with a conical edge cover ring (10). The inner cylinder (6) below the conical edge cover ring (10) is welded with a vertical branch pipe (12) through a stepped ring (11). Overflow holes (13) are distributed in a ring on the surface of the conical edge cover ring (10) and the stepped ring (11). A conical edge stepped ring (15) covering the outside of the container (6) is welded to the outside of the vertical branch pipe (12) below the stepped ring (11). A downward inclined inner ring (14) is welded to the outside of the container (6) above the conical edge stepped ring (15).

2. The automatic drainage device for a coal mine sump according to claim 1, characterized in that: The outer side of the ring (3) is integrally formed with a fixed hole plate (4), and a fixed column (7) is inserted into the fixed hole of the fixed hole plate (4).

3. The automatic drainage device for a coal mine sump according to claim 1, characterized in that: The inclined rod of the fork (8) is welded to the bottom edge of the cylinder (6), and a plate with a through hole (9) is welded to the end of the inclined rod of the fork (8).

4. The automatic drainage device for a coal mine sump according to claim 1, characterized in that: The lower inclined inner ring (14) is located on the outside of the container (6) and tilts towards the ring body above the conical stepped ring (15), and the conical stepped ring (15) tilts from the vertical branch pipe (12) towards the lower inclined inner ring (14).

5. The automatic drainage device for a coal mine sump according to claim 1, characterized in that: The cavity size of the container (6) is larger than the pump body size of the pump body (1).

6. The automatic drainage device for coal mine sump according to claim 1, characterized in that: A flow cavity is reserved between the conical shroud ring (10) and the stepped ring (11), and twelve sets of overflow holes (13) are distributed in a ring on the surface of the conical shroud ring (10) and the stepped ring (11).

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