Drainage device for water pump maintenance

Abstract

The application relates to the technical field of water pump maintenance, and discloses a drainage device for water pump maintenance, which comprises an operation pipeline connected with a drainage pipeline of a water pump to be maintained, a plugging assembly, a drainage guiding assembly and a fastening and adjusting assembly. The plugging assembly is embedded in the inner wall of the operation pipeline, the drainage guiding assembly is connected with the plugging assembly and is used for guiding residual liquid in the operation pipeline to a predetermined position, and the fastening and adjusting assembly is used for applying adjustable radial pressing force between the plugging assembly and the inner wall of the operation pipeline, so that the plugging assembly is sealingly fixed. The drainage guiding assembly comprises a flow guide pipe communicated with the plugging assembly and a flexible drainage pipe connected with the tail end of the flow guide pipe. The application can realize controllable drainage of residual liquid during water pump maintenance, avoids liquid overflow, and improves the safety and efficiency of maintenance operation.

Description

Technical Field

[0001] This invention relates to the field of water pump maintenance technology, and specifically to a drainage device for water pump maintenance. Background Technology

[0002] Water treatment processes in steel production plants require multiple sets of pumps, including single-stage centrifugal pumps, multi-stage centrifugal pumps, self-priming pumps, slurry pumps, and vertical long-shaft pumps. In operation, these pump sets are used in various systems such as the steelmaking clean circulating water system, continuous casting turbid circulating water system, continuous casting clean circulating water system, rolling mill clean circulating water system, rolling mill turbid circulating water system, laminar flow cooling system, soft water supply system, soft water closed-loop circulation system, quenching machine water system, converter dust removal turbid circulating water system, mud system, blast furnace clean circulating water system, and blast furnace soft water system.

[0003] The factory requires regular maintenance, routine inspections, and major overhauls of the water pumps, and corresponding energy source lock-in and tagging control measures are implemented on-site. The most prominent problem on-site is that although the inlet and outlet valves are closed and locked and tagged during water pump maintenance, due to the age of the valves, they are not always able to close tightly, and water always overflows from the pump body, potentially causing personal injury and equipment damage to surrounding electrical equipment, cable trays, covers, etc. Summary of the Invention

[0004] The technical objective of this invention is to provide a drainage device for water pump maintenance, which directs water from pipes or pump inlets to a set path and allows for easy disassembly, thereby reducing the risk of injury caused by residual pressurized liquid in the water pump and improving maintenance efficiency.

[0005] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution: This invention provides a drainage device for water pump maintenance, comprising a working pipe connected to the drainage pipe of the water pump to be maintained, characterized in that it further comprises a sealing component, a drainage guiding component, and a fastening and adjusting component; the sealing component is embedded in the inner wall of the working pipe; the drainage guiding component is connected to the sealing component and is used to guide residual liquid in the working pipe to a predetermined position; the fastening and adjusting component is used to apply an adjustable radial clamping force between the sealing component and the inner wall of the working pipe to radially seal and fix the sealing component; The drainage guiding component includes at least a guide pipe connected to the sealing component and a flexible drainage pipe connected to the end of the guide pipe.

[0006] Furthermore, the sealing assembly includes a blind flange body and an elastic sealing ring disposed on its outer periphery. The outer diameter of the blind flange body forms a transition fit or interference fit with the inner diameter of the working pipe. The elastic sealing ring is installed between the blind flange body and the working pipe.

[0007] Furthermore, the guide pipe is located at the center of the blind plate body, with one end of the guide pipe penetrating through the blind plate body and connected to it, and the other end connected to the flexible drainage pipe.

[0008] Preferably, the blind flange body has a flow guide surface on the side facing the inside of the pipe or pump body. The flow guide surface is a spherical surface that gathers the flow guide tube, which is used to change the direction of liquid flow and reduce the impact of liquid on the blind flange body.

[0009] Preferably, the inner wall of the guide pipe is provided with a one-way valve, which is used to allow the liquid to flow unidirectionally from the working pipe to the external flexible drain pipe.

[0010] Furthermore, the fastening adjustment assembly includes at least two sets of fastening brackets, which are circumferentially arrayed on the outer wall of the guide pipe. Through the extension and self-locking of the fastening brackets, the blind flange body is fastened to the inner wall of the working pipe.

[0011] Furthermore, the fastening bracket includes a fastening screw and a fastening nut. The fastening screw is installed on the outer wall of the guide pipe and is perpendicular to the inner wall of the working pipe. The fastening nut is installed on the fastening screw, and an elastic fastener is provided at the end of the fastening nut facing the inner wall of the working pipe. The elastic seal is pressed against the inner wall of the working pipe by rotating the nut.

[0012] Preferably, the fastening nut is provided with an operating handle on its outer side for manual gripping to adjust the fastening nut.

[0013] The beneficial effects of this invention are as follows: 1. This invention installs a sealing component inside the working pipeline and applies radial pressure to the sealing component using a fastening and adjusting component, enabling the sealing component to stably adhere to the inner wall of the pipeline to form a reliable seal. Simultaneously, a drainage guiding component guides residual liquid in the pipeline to a predetermined location via a guide pipe and a flexible drainage pipe. This allows maintenance personnel to actively guide and controllably discharge residual liquid during pump maintenance without relying on the original valve sealing performance, effectively preventing liquid spillage from affecting surrounding electrical equipment and the working environment, reducing safety risks, and improving the continuity and efficiency of maintenance operations.

[0014] 2. This invention sets the side of the blind flange body facing the inside of the pipe as a spherical guide surface for the flow guide tube, so that the residual liquid is guided by the guide surface to the inlet of the flow guide tube during the flow process, while reducing the positive impact force of the liquid on the blind flange body. The spherical guide surface of the blind flange body can improve the liquid collection efficiency and reduce liquid accumulation. On the other hand, it reduces the impact load on the sealing state of the sealing component, thereby further improving the stability and drainage reliability of the device.

[0015] 3. The present invention also provides a one-way valve on the inner wall of the guide pipe, which allows the liquid to flow only in one direction from the working pipe to the external flexible drainage pipe. When the external environment generates back pressure or there is a backflow tendency in the drainage pipe, the one-way valve automatically closes to block the flow. This effectively prevents the discharged liquid from flowing back into the pipe, avoiding secondary liquid accumulation or backflow, thus ensuring the one-wayness and safety of the drainage process and further improving the controllability of the maintenance environment. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention 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. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which: Figure 1 This is an overall sectional view of the drainage device in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the fastening bracket in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the blind plate body in an embodiment of the present invention.

[0018] In the diagram: 1. Working pipe; 2. Blind flange body; 21. Guide surface; 3. Elastic sealing ring; 4. Guide pipe; 5. Fastening bracket; 51. Fastening screw; 52. Fastening nut; 53. Elastic fastener; 54. Operating handle; 6. One-way valve; 7. Flexible drain pipe. Detailed Implementation

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] Example 1: This embodiment provides a drainage device for pump maintenance, such as... Figure 1As shown, the device includes a working pipe 1 connected to the drainage pipe of the water pump to be repaired. In this embodiment, the working pipe 1 is the original metal pipe on the water pump inlet and outlet side, and its inner wall is a cylindrical structure. The drainage device provided in this embodiment also includes a sealing component, a drainage guiding component, and a fastening and adjusting component. The sealing component is embedded in the inner wall of the working pipe 1. Specifically, the sealing component is pushed into the working pipe 1 axially so that its outer circumference fits against the inner wall of the working pipe 1. The drainage guiding component is connected to the sealing component and is used to guide the residual liquid in the working pipe 1 to a predetermined location. In this embodiment, the predetermined location is a ground drainage point or collection container far away from the maintenance area.

[0021] In this embodiment, the fastening and adjusting assembly is used to apply an adjustable radial clamping force between the sealing assembly and the inner wall of the working pipe 1. By manually adjusting, the sealing assembly is radially expanded and pressed against the inner wall of the pipe, thereby radially sealing and fixing the sealing assembly. The drainage guiding assembly includes at least a guide pipe 4 communicating with the sealing assembly and a flexible drain pipe 7 connected to the end of the guide pipe 4. The guide pipe 4 is used to establish a communication channel between the inside and outside of the pipe. The flexible drain pipe 7 is sleeved on the end of the guide pipe 4 and extends to a predetermined position, thereby allowing the liquid to be discharged along the guiding path and preventing the liquid from overflowing during maintenance. Example 2: Based on Embodiment 1, the sealing assembly includes a blind flange body 2 and an elastic sealing ring 3 disposed on its outer periphery. The blind flange body 2 is a circular plate structure that matches the inner diameter of the working pipe 1. Its outer diameter forms a transition fit or interference fit with the inner diameter of the working pipe 1, so that the blind flange body 2 has an initial positioning effect after insertion. The elastic sealing ring 3 is disposed between the blind flange body 2 and the working pipe 1, and is used to generate elastic deformation under the action of the fastening adjustment assembly to fill the gap, thereby improving the sealing performance and reducing wear on the inner wall of the working pipe 1.

[0022] In this embodiment, as Figure 1 As shown, the guide pipe 4 is located at the center of the blind plate body 2, and one end of the guide pipe 4 passes through the blind plate body 2 and is connected to the blind plate body 2, while the other end is connected to the flexible drain pipe 7, so that the liquid can be collected and discharged from the center of the blind plate body 2.

[0023] like Figure 3 In this embodiment, the blind flange body 2 is provided with a flow guide surface 21 on the side facing the inside of the pipe or pump body. The flow guide surface 21 is a spherical structure that gathers the flow guide tube 4. Under the action of liquid, it can guide the liquid to flow in a concentrated direction towards the flow guide tube 4, thereby reducing the retention of liquid on the surface of the blind flange and reducing the direct impact of liquid on the blind flange body 2, and improving the stability of the sealing component.

[0024] In this embodiment, as Figure 2As shown, the inner wall of the guide pipe 4 is equipped with a one-way valve 6. The one-way valve 6 allows liquid to flow unidirectionally from the working pipe 1 to the external flexible drain pipe 7. When there is a backflow trend outside, it can be automatically closed to prevent liquid from flowing back into the working pipe 1 and avoid secondary liquid accumulation.

[0025] The fastening adjustment assembly of this embodiment includes at least two sets of fastening brackets 5. The fastening brackets 5 are circumferentially arrayed and installed on the outer wall of the guide pipe 4. The fastening force acting simultaneously in multiple directions achieves uniform force on the sealing assembly. The fastening bracket 5 includes a fastening screw 51 and a fastening nut 52. The fastening screw 51 is installed on the outer wall of the guide pipe 4 and is set perpendicular to the inner wall of the working pipe 1. The fastening nut 52 is installed on the fastening screw 51 and can move along the screw axial direction. The end of the fastening nut 52 facing the inner wall of the working pipe 1 is provided with an elastic fastener 53. During the rotation of the nut, the elastic fastener 53 gradually presses against the inner wall of the working pipe 1, thereby achieving radial tightening and fixing of the sealing assembly, while avoiding damage to the inner wall of the pipe through elastic contact.

[0026] Preferably, an operating handle 54 is provided on the outside of the fastening nut 52. The operating handle 54 is fixedly connected to the nut, which is convenient for manual gripping and applying torque to achieve rapid adjustment of the tightness and improve the efficiency of installation and disassembly. Through the above structure, the various technical features work together to enable the device to achieve rapid installation, reliable sealing and stable drainage in actual water pump maintenance, effectively preventing residual liquid from overflowing or flowing back, and improving the safety and controllability of maintenance operations.

[0027] The description herein is provided to enable those skilled in the art to implement or use the present disclosure; various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure; therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

[0028] Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims. The foregoing description is merely illustrative of this disclosure. In view of the above detailed description, these modifications may be made to the invention; the terminology used in the appended claims should not be construed as limiting the invention to the specific embodiments disclosed in the specification; rather, the scope of the invention will be fully defined by the appended claims, which will be interpreted according to the established principles of claim interpretation.

Claims

1. A drainage device for pump maintenance, comprising a working pipe (1) connected to the drainage pipe of the pump to be maintained, characterized in that, Also includes: A sealing component is embedded in the inner wall of the working pipe (1); A drainage guiding component, connected to the sealing component, is used to drain the residual liquid in the working pipe (1) to a predetermined location; A fastening adjustment assembly is used to apply an adjustable radial clamping force between the plugging assembly and the inner wall of the working pipe (1) to radially seal and fix the plugging assembly. The drainage guiding component includes at least a guide pipe (4) connected to the sealing component and a flexible drainage pipe (7) connected to the end of the guide pipe (4).

2. The drainage device for pump maintenance according to claim 1, characterized in that: The sealing assembly includes a blind flange body (2) and an elastic sealing ring (3) disposed on its outer periphery. The outer diameter of the blind flange body (2) and the inner diameter of the working pipe (1) form a transition fit or interference fit. The elastic sealing ring (3) is installed between the blind flange body (2) and the working pipe (1).

3. A drainage device for pump maintenance according to claim 2, characterized in that: The guide pipe (4) is located at the center of the blind plate body (2), and one end of the guide pipe (4) passes through the blind plate body (2) and is connected to the blind plate body (2), while the other end is connected to the flexible drainage pipe (7).

4. A drainage device for pump maintenance according to claim 3, characterized in that: The blind flange body (2) has a flow guide surface (21) on the side facing the inside of the pipe or pump body. The flow guide surface (21) is a spherical surface that gathers the flow guide tube (4) and is used to change the direction of liquid flow and reduce the impact of liquid on the blind flange body (2).

5. A drainage device for pump maintenance according to claim 3, characterized in that: The inner wall of the guide pipe (4) is provided with a one-way valve (6), which is used to allow liquid to flow unidirectionally from the working pipe (1) to the external flexible drain pipe (7).

6. A drainage device for pump maintenance according to claim 1, characterized in that: The fastening adjustment assembly includes at least two sets of fastening brackets (5). The fastening brackets (5) are arranged in a circumferential array on the outer wall of the guide pipe (4). Through the extension and self-locking of the fastening brackets (5), the blind plate body (2) is fastened to the inner wall of the working pipe (1).

7. A drainage device for pump maintenance according to claim 6, characterized in that: The fastening bracket (5) includes a fastening screw (51) and a fastening nut (52). The fastening screw (51) is installed on the outer wall of the guide pipe (4) and is perpendicular to the inner wall of the working pipe (1). The fastening nut (52) is installed on the fastening screw (51). One end of the fastening nut (52) facing the inner wall of the working pipe (1) is provided with an elastic fastener (53). The elastic seal is pressed against the inner wall of the working pipe (1) by rotating the nut.

8. A drainage device for pump maintenance according to claim 7, characterized in that: The fastening nut (52) is provided with an operating handle (54) on the outside for manual gripping to adjust the fastening nut (52).

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