Efficient impeller sealing structure of mine drainage pump

Abstract

This utility model discloses a high-efficiency impeller sealing structure for a mining drainage pump, relating to the field of mechanization technology. The high-efficiency impeller sealing structure includes a water storage tank. A pressure-reducing mechanism is installed at the top of the water storage tank, and a base for fixing the sealing structure is installed at the bottom. An inlet pipe is located on the left side of the water storage tank, and an outlet pipe is located on the right side. The portions of the inlet and outlet pipes connected to the water storage tank are respectively fitted with sealing rings. When the inlet water velocity is greater than the outlet water velocity, the water storage tank fills with water, and the internal water pressure continuously increases, pushing a pressure piston upwards. When the pressure reaches a certain level, the pressure piston moves above the pressure-reducing hole. At this time, the pressure-reducing hole communicates with the water storage tank, discharging liquid to reduce pressure and control the water pressure in the water storage tank within a reasonable range. When operation stops, the water pressure in the water storage tank is released, and the pressure piston returns to its original position under the action of a compression spring.

Description

Technical Field

[0001] This utility model relates to the field of mechanization technology, specifically to a high-efficiency impeller sealing structure for a mining drainage pump. Background Technology

[0002] Mine drainage pumps are crucial equipment for removing groundwater in mining operations, and their design and performance directly impact mine safety. A utility model patent published in 2020 reveals a lightweight, submersible mine drainage pump that, through a special guide vane structure design, creates bidirectional clockwise and counterclockwise water flow channels within the pump body, significantly improving emergency rescue efficiency. This equipment, composed of core components such as an impeller, pump shaft, and guide vanes, is of great importance in ensuring safe production and reducing property damage in unexpected situations.

[0003] In existing technologies, the high-efficiency impeller sealing structure for mine drainage has the problem that when the inner cavity is full of liquid and the inflow velocity is greater than the outflow velocity, the pressure in the water storage tank will increase, causing the liquid to leak out from the sealing connection. This wastes water resources and increases costs, making it unsuitable for large-scale production. Long-term impact on components will also lead to a shortened service life of the components and increase the frequency of maintenance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-efficiency impeller sealing structure for a mining drainage pump. This solves the problem in existing technologies where liquid leaks from the sealing interface when the internal water pressure is too high, wasting water resources and increasing costs. It is also unsuitable for large-scale production, and the long-term impact on components can shorten their service life and increase maintenance frequency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency impeller sealing structure for a mining drainage pump. It includes a water storage tank, with a pressure-reducing mechanism at the top and a base for fixing the sealing structure at the bottom. An inlet pipe is located on the left side of the water storage tank, and an outlet pipe is located on the right side. The portions of the inlet and outlet pipes connected to the water storage tank are respectively encased in sealing rings.

[0008] The pressure-reducing mechanism is fixed to the top of the water storage tank with screws. A through hole is provided between the pressure-reducing mechanism and the water storage tank, and the inner cavity of the pressure-reducing mechanism is connected to the inner cavity of the water storage tank through the through hole. The through hole cooperates with the circular boss below the pressure-reducing mechanism.

[0009] The pressure-reducing mechanism's outer shell is composed of a cover plate and a base plate connected by four bolts. The bottom surface of the base plate has four threaded holes and one water inlet. Each of the four threaded holes connects to a guide post. Four holes on the pressure plate mate with four guide posts installed inside the base plate; this connection is movable, allowing the pressure plate to move up and down via the guide posts. The four guide posts have four primary compression springs installed in their lower parts and two secondary compression springs with a larger elastic coefficient installed in their upper parts. The two types of springs are separated by the pressure plate. Pressure-reducing holes are provided on both sides of the base plate.

[0010] Preferably, the diameter of the through hole is 50mm to 60mm.

[0011] Preferably, the pressure relief holes are located on both sides of the base plate, and the diameter of the pressure relief holes is 10 mm to 15 mm.

[0012] Preferably, the cover plate is detachable from the base plate, and the operator can disassemble the internal structure of the base plate by removing the base plate relative to the cover plate. The cover plate is made of PET transparent plastic.

[0013] (III) Beneficial Effects

[0014] This utility model provides a high-efficiency impeller sealing structure for a mining drainage pump. It has the following beneficial effects:

[0015] This mine drainage pump features a high-efficiency impeller seal structure. By adding a pressure-reducing mechanism at the top, the internal pressure of the water storage tank is controlled within a reasonable range, preventing liquid leakage from the connection. Furthermore, this improvement is based on existing equipment with conventional structures, resulting in relatively low modification costs. It also provides the possibility of disassembling and replacing vulnerable parts, further saving costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the invention structure;

[0017] Figure 2 This is a schematic diagram of a pressure-reducing device;

[0018] Figure 3 A cross-sectional assembly drawing of the water storage tank and pressure reducing mechanism;

[0019] Figure 4 Front and top views of the pressure relief mechanism and base plate

[0020] In the diagram: 1. Sealing ring; 2. Water storage tank; 3. Pressure reducing mechanism; 31. Cover plate; 32. Base plate; 33. Pressure piston; 34. Guide post; 35. Primary compression spring; 36. Pressure sealing ring; 37. Pressure reducing hole; 38. Secondary compression spring; 39. Pressure plate; 4. Inlet pipe; 5. Base; 6. Outlet pipe; 7. Through hole. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a high-efficiency impeller sealing structure for a mining drainage pump. The high-efficiency impeller sealing structure for a mining drainage pump includes a water storage tank 2. A pressure-reducing mechanism 3 is provided at the top of the water storage tank 2, and a base 5 for fixing the sealing structure is provided at the bottom of the water storage tank 2. An inlet pipe 4 is provided on the left side of the water storage tank 2, and an outlet pipe 6 is provided on the right side of the water storage tank 2. The portions of the inlet pipe 4 and the outlet pipe 6 that connect to the water storage tank 2 are respectively encased in sealing rings 1.

[0023] The pressure-reducing mechanism 3 is fixed above the water storage tank 2 with screws. A through hole 7 is provided between the pressure-reducing mechanism 3 and the water storage tank 2, and the inner cavity of the pressure-reducing mechanism 3 is connected to the inner cavity of the water storage tank 2 through the through hole 7. The through hole 7 is matched with the circular boss below the pressure-reducing mechanism 3.

[0024] The outer shell of the pressure-reducing mechanism 3 is composed of a cover plate 31 and a base plate 32 connected by four bolts. The bottom surface of the base plate 32 has four threaded holes and one water inlet hole. Each of the four threaded holes is connected to a guide post 34. The four holes on the pressure piston 33 mate with the four guide posts 34 installed inside the base plate 32. This connection is movable, allowing the pressure piston 33 to move up and down via the guide posts 34. The pressure piston 33 is radially fitted with a pressure sealing ring 36. The four guide posts 34 have four primary compression springs 35 installed in the lower part and secondary compression springs 38 with a larger elastic coefficient installed in the upper part, separated by a pressure plate 39. Pressure-reducing holes 37 are provided on both sides of the base plate 32.

[0025] During operation, when the inlet water rate exceeds the outlet water rate, the water storage tank 2 fills with water, and the internal water pressure continuously increases. This pushes the pressure piston 33 upward. When the pressure reaches a certain level, the pressure piston 33 moves above the pressure relief hole 37. At this point, the pressure relief hole 37 communicates with the water storage tank 2, discharging liquid to reduce pressure and maintain the water pressure in the water storage tank 2 within a reasonable range. When operation stops, the water pressure in the water storage tank 2 is released, and the pressure piston 33 returns to its original position under the action of the primary compression spring 35 and the secondary compression spring 38.

[0026] In summary, the high-efficiency impeller sealing structure of this mine drainage pump reduces pressure through the cooperation of the primary compression spring 35, the secondary compression spring 38, the pressure piston 33, and the pressure reducing hole 37 inside the pressure reducing mechanism 3. The improvement of this device is based on existing equipment, and its structure is a conventional structure. Therefore, the improvement cost is relatively small, and it provides the possibility of disassembly and replacement of vulnerable parts, which further saves costs.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency impeller sealing structure for a mining drainage pump, characterized in that: Includes a water storage tank (2), the top of which is provided with a pressure reducing mechanism (3), and the bottom of which is provided with a base (5) with a fixed sealing structure; an inlet pipe (4) is provided on the left side of the water storage tank (2), and an outlet pipe (6) is provided on the right side of the water storage tank (2); the parts of the inlet pipe (4) and the outlet pipe (6) connected to the water storage tank are respectively covered with sealing rings (1); The pressure reducing mechanism (3) is fixed above the water storage tank (2) with screws. A through hole (7) is provided between the pressure reducing mechanism (3) and the water storage tank (2), and the inner cavity of the pressure reducing mechanism (3) is connected to the inner cavity of the water storage tank (2) through the through hole (7). The through hole (7) is matched with the circular boss below the pressure reducing mechanism (3). The outer shell of the pressure reducing mechanism (3) is composed of a cover plate (31) and a base plate (32) connected by four bolts. The bottom surface of the base plate (32) is provided with four threaded holes and a water inlet hole. Each of the four threaded holes is connected to a guide post (34). The four holes on the pressure piston (33) cooperate with the four guide posts (34) installed inside the base plate (32). This connection is a movable connection. The pressure piston (33) can move up and down through the guide posts (34). The pressure piston (33) is radially fitted with a pressure sealing ring (36). The four guide posts (34) are respectively equipped with four primary compression springs (35) in the lower part and secondary compression springs (38) with a larger elastic coefficient in the upper part. The two types of springs are separated by a pressure plate (39). Pressure reducing holes (37) are provided on both sides of the base plate (32).

2. The high-efficiency impeller sealing structure for a mining drainage pump according to claim 1, characterized in that: The diameter of the through hole (7) is 50 mm to 60 mm.

3. The high-efficiency impeller sealing structure for a mining drainage pump according to claim 1, characterized in that: The pressure relief holes (37) are located on both sides of the base plate (32), and the diameter of the pressure relief holes (37) is 10 mm to 15 mm.

4. The high-efficiency impeller sealing structure for a mining drainage pump according to claim 1, characterized in that: The cover plate (31) can be detached from the base plate (32). Operators can disassemble and replace the internal structure of the base plate (32) by removing the cover plate (31). The cover plate (31) is made of PET transparent plastic.

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