Water suction pipe assembly and drainage system

Abstract

The utility model discloses a water suction pipe assembly and a drainage system. The water suction pipe assembly comprises a conveying pipeline; the transmission shaft is rotatably arranged in the conveying pipeline; the water suction pipe is communicated with the conveying pipeline; the impeller is arranged on the transmission shaft; the anti-impact assembly is arranged on the transmission shaft and located between the water suction pipe and the impeller. The diameter of the anti-impact assembly is gradually increased in the direction from the water suction pipe to the impeller.

Description

Technical Field

[0001] This application belongs to the field of drainage technology, specifically relating to a water suction pipe assembly and a drainage system. Background Technology

[0002] Currently, the drainage system of underground mines mainly uses horizontal multistage centrifugal pumps. The condition for starting a multistage centrifugal pump is that the pump body and suction pipe must be filled with water. The current water injection method is mainly to install an impeller in the suction pipe and drive the impeller to rotate through a motor to inject water into the pump body and suction pipe.

[0003] When the drainage system is shut down, water hammer can easily form inside the suction pipe. The water hammer will act on the impeller, causing damage to the components. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a water suction pipe assembly and a drainage system, aiming to at least partially solve the technical problem that water hammer easily forms inside the water suction pipe when the drainage system is shut down, and that the water hammer acts on the impeller, causing damage to components.

[0005] The technical solution of this utility model is as follows:

[0006] A water suction pipe assembly includes: a conveying pipe; a drive shaft rotatably disposed within the conveying pipe; a water suction pipe communicating with the conveying pipe; an impeller disposed on the drive shaft; and an anti-impact component disposed on the drive shaft and located between the water suction pipe and the impeller; wherein, along the direction from the water suction pipe to the impeller, the diameter of the anti-impact component gradually increases.

[0007] In some implementations, the shock-absorbing assembly includes: a first shock-absorbing member; and a second shock-absorbing member detachably connected to the first shock-absorbing member; wherein the drive shaft is disposed between the first shock-absorbing member and the second shock-absorbing member.

[0008] In some embodiments, the first shock absorber includes a first receiving portion, a first guide portion, and two first connecting portions, the two first connecting portions being connected to both ends of the first receiving portion, and the first guide portion being connected to the two first connecting portions. The second shock absorber includes a second receiving portion, a second guide portion, and two second connecting portions, the two second connecting portions being connected to both ends of the second receiving portion, and the second guide portion being connected to the two second connecting portions. The two first connecting portions are detachably connected to the two second connecting portions. The drive shaft is disposed between the first receiving portion and the second receiving portion. Along the direction from the suction pipe to the impeller, the distance between the first guide portion and the drive shaft gradually increases. Along the direction from the suction pipe to the impeller, the distance between the second guide portion and the drive shaft gradually increases.

[0009] In some embodiments, the first shock absorber further includes: a plurality of first reinforcing portions, one end of which is connected to the first receiving portion and the other end of which is connected to the first guide portion.

[0010] In some embodiments, the second shock absorber further includes a plurality of second reinforcing portions, one end of which is connected to the second receiving portion and the other end of which is connected to the second guide portion.

[0011] In some embodiments, along the axial direction of the drive shaft, the projection of the shock-absorbing component on the delivery pipe and the projection of the impeller on the delivery pipe at least partially overlap.

[0012] In some embodiments, the shock-absorbing component has a mounting hole on its end face facing the impeller, and the impeller has a mounting portion that is fitted into the mounting hole.

[0013] In some embodiments, the suction pipe assembly further includes: a bearing housing disposed within the delivery pipe; a thrust bearing disposed within the bearing housing and connected to the drive shaft; wherein the impeller is located between the bearing housing and the shock-absorbing assembly.

[0014] In some embodiments, the suction pipe assembly further includes a branch pipe communicating with the delivery pipe; wherein the branch pipe is located between the suction pipe and the impeller, and a one-way valve is provided inside the branch pipe.

[0015] Based on the same inventive concept, this utility model also provides a drainage system, including a centrifugal pump and the aforementioned suction pipe assembly.

[0016] The beneficial effects of this utility model include at least the following:

[0017] Because the drive shaft is rotatably installed inside the conveying pipe, the suction pipe is connected to the conveying pipe, and the impeller is located on the drive shaft, the drive shaft can drive the impeller to rotate inside the conveying pipe, and inject water into the conveying pipe, suction pipe and centrifugal pump in a centrifugal manner, completing the water injection within a set time and starting the centrifugal pump.

[0018] Because the anti-impact component is located on the drive shaft between the suction pipe and the impeller, its diameter gradually increases from the suction pipe towards the impeller. Therefore, when the drainage system stops and water hammer occurs in the suction pipe, the force of the water hammer will be transmitted towards the impeller. Before reaching the impeller, the force of the water hammer will act on the anti-impact component, which guides the force of the water hammer to change its direction, ensuring that the force of the water hammer does not act directly on the impeller along the axial direction of the drive shaft, thus ensuring the safety of the impeller. At the same time, the anti-impact component can also act as a buffer, reducing the impact speed and force of the water hammer. Even if some of the water hammer force acts on the impeller, it can reduce the damage to the impeller, further ensuring the safety and service life of the impeller, and reducing the failure rate and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the water suction pipe assembly in some embodiments;

[0021] Figure 2 for Figure 1 A schematic diagram of the impact-resistant components of the middle suction pipe assembly;

[0022] Figure 3 for Figure 1 Cross-sectional view of the shock-resistant component.

[0023] In the attached image:

[0024] Pipeline 10;

[0025] Drive shaft 20;

[0026] 30mm suction pipe;

[0027] Impeller 40;

[0028] Impact-resistant assembly 50, first impact-resistant member 51, first receiving portion 511, first connecting portion 512, first guide portion 513, first reinforcing portion 514, second impact-resistant member 52, second receiving portion 521, second connecting portion 522, second guide portion 523, second reinforcing portion 524, mounting hole 53;

[0029] Bearing housing 60;

[0030] Thrust bearing 70;

[0031] Branch pipe 80;

[0032] One-way valve 90;

[0033] Drive 100;

[0034] Support base 110;

[0035] Sealing sleeve 120. Detailed Implementation

[0036] 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.

[0037] It should be noted that all directional indications in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] This application is described below with reference to the accompanying drawings and specific embodiments:

[0041] The suction pipe assembly and drainage system provided in this embodiment aim to solve, to some extent, the technical problem that water hammer is easily generated in the suction pipe when the drainage system is shut down, and that the water hammer will act on the impeller, causing damage to the components.

[0042] Figure 1 This is a structural schematic diagram of the water suction pipe assembly according to some embodiments. (Combined with...) Figure 1 The suction pipe assembly of this application embodiment includes: a conveying pipe 10, a drive shaft 20, a suction pipe 30, an impeller 40, and an anti-impact component 50. The drive shaft 20 is rotatably disposed within the conveying pipe 10. The suction pipe 30 communicates with the conveying pipe 10. The impeller 40 is disposed on the drive shaft 20. The anti-impact component 50 is disposed on the drive shaft 20 and located between the suction pipe 30 and the impeller 40. The diameter of the anti-impact component 50 gradually increases along the direction from the suction pipe 30 to the impeller 40.

[0043] The shock-absorbing component 50 is located between the connection point of the suction pipe 30 and the delivery pipe 10 and the impeller 40.

[0044] Since the drive shaft 20 is rotatably installed inside the conveying pipe 10, the suction pipe 30 is connected to the conveying pipe 10, and the impeller 40 is installed on the drive shaft 20, the drive shaft 20 can drive the impeller 40 to rotate inside the conveying pipe 10, and inject water into the conveying pipe 10, the suction pipe 30 and the centrifugal pump in a centrifugal manner, and complete the water injection within a set time to start the centrifugal pump.

[0045] Since the anti-impact component 50 is located on the drive shaft 20 and between the suction pipe 30 and the impeller 40, the diameter of the anti-impact component 50 gradually increases along the direction from the suction pipe 30 to the impeller 40. Therefore, when the drainage system stops and water hammer is generated in the suction pipe 30, the force of the water hammer will be transmitted towards the impeller 40. Before the force of the water hammer reaches the impeller 40, it will act on the anti-impact component 50. The anti-impact component 50 guides the force of the water hammer to change its direction, so that the force of the water hammer will not act directly on the impeller 40 along the axial direction of the drive shaft 20, thus ensuring the safety of the impeller 40. At the same time, the anti-impact component 50 can also act as a buffer, which can reduce the impact speed and force of the water hammer. Even if some of the water hammer force acts on the impeller 40, it can reduce the damage to the impeller 40, further ensuring the safety of the impeller 40, ensuring the service life of the impeller 40, and reducing the failure rate and maintenance.

[0046] In some embodiments, along the axial direction of the drive shaft 20, the projection of the anti-impact component 50 on the conveying pipe 10 and the projection of the impeller 40 on the conveying pipe 10 at least partially overlap, so that the anti-impact component 50 can guide the water hammer force to change the direction of the water hammer force so that the water hammer force does not act directly on the impeller 40 along the axial direction of the drive shaft 20.

[0047] Figure 2 for Figure 1 A schematic diagram of the impact-resistant component 50 of the middle suction pipe assembly; Figure 3 for Figure 1 Cross-sectional view of the intermediate impact protection component 50. (Combined with...) Figure 2 and Figure 3 To facilitate the installation of the shock-absorbing assembly 50, the shock-absorbing assembly 50 includes a first shock-absorbing member 51 and a second shock-absorbing member 52. The second shock-absorbing member 52 is detachably connected to the first shock-absorbing member 51. A drive shaft 20 is disposed between the first shock-absorbing member 51 and the second shock-absorbing member 52.

[0048] When installing the shock-absorbing component 50, simply place the first shock-absorbing component 51 onto the drive shaft 20, and then connect the second shock-absorbing component 52 to the first shock-absorbing component 51. When the shock-absorbing component 50 is damaged or requires maintenance, the second shock-absorbing component 52 can be separated from the first shock-absorbing component 51 without disassembling the drive shaft 20, thus improving work efficiency.

[0049] Combination Figure 2 and Figure 3 In some embodiments, to guide the water hammer force, the first anti-impact member 51 includes a first receiving portion 511, a first guide portion 513, and two first connecting portions 512. The two first connecting portions 512 are respectively connected to both ends of the first receiving portion 511, and the first guide portion 513 is connected to the two first connecting portions 512. The second anti-impact member 52 includes a second receiving portion 521, a second guide portion 523, and two second connecting portions 522. The two second connecting portions 522 are respectively connected to both ends of the second receiving portion 521, and the second guide portion 523 is connected to the two second connecting portions 522. The two first connecting portions 512 are detachably connected to the two second connecting portions 522. The drive shaft 20 is disposed between the first receiving portion 511 and the second receiving portion 521. Along the direction from the suction pipe 30 to the impeller 40, the distance between the first guide portion 513 and the drive shaft 20 gradually increases. Along the direction from the suction pipe 30 to the impeller 40, the distance between the second guide part 523 and the drive shaft 20 gradually increases.

[0050] Place the first receiving part 511 on the drive shaft 20, and then place the second receiving part 521 on the drive shaft 20. At this time, the second receiving part 521 is opposite to the first receiving part 511, and the two first connecting parts 512 are respectively connected to the two second connecting parts 522, so that the shock-absorbing component 50 can be installed on the drive shaft.

[0051] As the distance between the first guide part 513 and the drive shaft 20 gradually increases along the direction from the suction pipe 30 to the impeller 40, and the distance between the second guide part 523 and the drive shaft 20 gradually increases along the same direction, the water hammer force acts on the first guide part 513 and the second guide part 523 before reaching the impeller 40. The first guide part 513 and the second guide part 523 guide the water hammer force to change its direction, so that the water hammer force does not act directly on the impeller 40 along the axial direction of the drive shaft 20, thus ensuring the safety of the impeller 40. At the same time, the anti-impact component 50 can play a buffering role, which can reduce the impact speed and impact force of the water hammer force. Even if some of the water hammer force acts on the impeller 40, it can reduce the damage to the impeller 40, further ensuring the safety of the impeller 40, ensuring the service life of the impeller 40, and reducing the failure rate and maintenance.

[0052] Both the second receiving portion 521 and the first receiving portion 511 are semi-circular.

[0053] In some embodiments, when the two first connecting portions 512 are detachably connected to the two second connecting portions 522 respectively, the first receiving portion 511 and the second receiving portion 521 form a cylindrical hole, and the drive shaft 20 is disposed in the cylindrical hole. The diameter of the cylindrical hole is smaller than the diameter of the drive shaft 20, so that the first receiving portion 511 and the second receiving portion 521 can clamp the drive shaft 20, ensuring the stability of the first anti-impact member 51 and the second anti-impact member 52 installed on the drive shaft 20.

[0054] Combination Figure 2 and Figure 3In some embodiments, to ensure the structural strength of the first impact protector 51, the first impact protector 51 further includes a plurality of first reinforcing portions 514. One end of each of the plurality of first reinforcing portions 514 is connected to the first receiving portion 511, and the other end is connected to the first guide portion 513, forming a plurality of triangular-like support structures. This makes the first impact protector 51 more stable, able to resist greater external forces and deformations. Furthermore, the first reinforcing portions 514 can distribute and transfer the load from the first guide portion 513, preventing local overload, extending the service life of the entire structure, and increasing the rigidity of the first impact protector 51, making it more resistant to bending and torsion. This is particularly important for devices that need to maintain precise shape and position. Simultaneously, by firmly connecting the first reinforcing portions 514 to the first receiving portion 511 and the first guide portion 513, the connection reliability between the first receiving portion 511 and the first guide portion 513 can be enhanced.

[0055] The multiple first reinforcing parts 514 are evenly spaced at equal angles, ensuring that each first reinforcing part 514 can evenly distribute the forces and stresses from all directions. This prevents any part of the first impact-resistant member 51 from bearing excessive load, thereby improving the overall balance and stability. By evenly distributing the first reinforcing parts 514, the material can be used more effectively to enhance the overall strength of the structure. The first impact-resistant member 51 can better resist deformation and damage when subjected to external forces. At the same time, the first impact-resistant members 51 with equal angles form an effective load transfer network. When a part of the first impact-resistant member 51 is subjected to a load, the load can be evenly transferred to the first impact-resistant member 51 through the first reinforcing parts 514, thereby avoiding local overload and stress concentration.

[0056] Combination Figure 2 and Figure 3 In some embodiments, to ensure the structural strength of the second impact protector 52, the second impact protector 52 further includes a plurality of second reinforcing portions 524. One end of each of the plurality of second reinforcing portions 524 is connected to the second receiving portion 521, and the other end is connected to the second guide portion 523, forming a plurality of triangular-like support structures. This makes the second impact protector 52 more stable, capable of resisting greater external forces and deformations. Furthermore, the second reinforcing portions 524 can distribute and transfer the load from the second guide portion 523, preventing local overload, extending the service life of the entire structure, and increasing the rigidity of the second impact protector 52, making it more resistant to bending and torsion. This is particularly important for devices that need to maintain precise shape and position. Simultaneously, by firmly connecting the second reinforcing portions 524 to the second receiving portion 521 and the second guide portion 523, the connection reliability between the second receiving portion 521 and the second guide portion 523 can be enhanced.

[0057] The multiple second reinforcing parts 524 are evenly spaced at equal angles, ensuring that each second reinforcing part 524 can evenly distribute the forces and stresses from all directions. This prevents any part of the second impact-resistant member 52 from bearing excessive loads, thereby improving the overall balance and stability. By evenly distributing the second reinforcing parts 524, the material can be used more effectively to enhance the overall strength of the structure. The second impact-resistant member 52 can better resist deformation and damage when subjected to external forces. At the same time, the equally spaced second impact-resistant members 52 form an effective load transfer network. When a part of the second impact-resistant member 52 is subjected to a load, the load can be evenly transferred to the second impact-resistant member 52 through the second reinforcing parts 524, thereby avoiding local overload and stress concentration.

[0058] Combination Figure 1 , Figure 2 and Figure 3 In some embodiments, the anti-impact component 50 is shaped like a frustum, which guides the force of water hammer and changes its direction, preventing the force from acting directly on the impeller 40 along the axial direction of the drive shaft 20, thus ensuring the safety of the impeller 40. At the same time, the anti-impact component 50 can also act as a buffer, reducing the impact speed and force of the water hammer. Even if some of the water hammer force acts on the impeller 40, it can reduce the damage to the impeller 40, further ensuring the safety of the impeller 40, extending its service life, and reducing the failure rate and maintenance workload.

[0059] Combination Figure 1 and Figure 3 To ensure the stability of the anti-impact component 50 during installation, the end face of the anti-impact component 50 facing the impeller 40 is provided with a mounting hole 53. The impeller 40 has a mounting part, which is embedded in the mounting hole 53 to limit the movement of the anti-impact component 50 and provide a stable support point for the anti-impact component 50. This not only restricts the axial movement of the anti-impact component 50 on the drive shaft 20, but also increases the radial stability of the anti-impact component 50 on the drive shaft 20, thereby ensuring that the anti-impact component 50 can be firmly installed on the drive shaft 20.

[0060] By directly embedding the mounting part into the mounting hole 53, the installation process is simplified, the tools and time required for installing the shock-resistant component 50 are reduced, the installation process is made more intuitive and convenient, and the installation difficulty and cost are reduced.

[0061] Combination Figure 1In some embodiments, to ensure the stability of the rotation of the drive shaft 20, the suction pipe assembly further includes a bearing housing 60 and a thrust bearing 70. The bearing housing 60 is disposed within the conveying pipe 10. The thrust bearing 70 is disposed within the bearing housing 60 and connected to the drive shaft 20. The impeller 40 is located between the bearing housing 60 and the anti-impact component 50, and supports the drive shaft 20 via the thrust bearing 90, ensuring smooth rotation of the drive shaft 20.

[0062] Combination Figure 1 To facilitate water delivery, the suction pipe assembly also includes a branch pipe 80. The branch pipe 80 is connected to the delivery pipe 10. The branch pipe 80 is located between the suction pipe 30 and the impeller 40, and a one-way valve 90 is installed inside the branch pipe 80.

[0063] The drive shaft 20 drives the impeller 40 to rotate, centrifugally pressurizing water into the delivery pipe 10, suction pipe 30, and centrifugal pump. Water injection is completed within a set time, and the centrifugal pump starts operating. Once the centrifugal pump reaches normal operating conditions, the drive shaft 20 stops rotating, and external water enters the branch pipe 80, passes through the one-way valve 90 into the delivery pipe 10, and then through the delivery pipe 10 into the suction pipe 30. The centrifugal pump is supplied with water by the branch pipe 80.

[0064] Combination Figure 1 In some embodiments, to achieve rotation of the drive shaft 20, the suction pipe assembly further includes a driver 100 and a support 110. The driver 100 is located outside the delivery pipe 10. The support 110 is connected to the driver 100 and the delivery pipe 10, supporting the driver 100 via the delivery pipe 10. The drive shaft 20 passes through the delivery pipe 10 and the support 110 and is connected to the driver 100. The actuating end of the driver 100 is connected to the drive shaft 20, and the fixed end of the driver 100 is connected to the support 110.

[0065] When water needs to be delivered, the driver 100 is started, which drives the drive shaft 20 to rotate, thereby drawing water into the delivery pipe 10 and delivering the water to the suction pipe 30 through the delivery pipe 10.

[0066] In some embodiments, the center of the support base 110 is hollowed out, which does not affect the connection between the drive shaft 20 and the driver 100.

[0067] Combination Figure 1 To prevent water leakage within the conveying pipe 10, a through hole is provided in the conveying pipe 10. The water suction pipe assembly also includes a sealing sleeve 120. The sealing sleeve 120 is connected to the conveying pipe 10 and is disposed within the through hole. The drive shaft 20 passes through the sealing sleeve 120, and the sealing sleeve 120 seals the gap between the through hole and the drive shaft 20, thus ensuring the airtightness of the conveying pipe 10.

[0068] In some embodiments, the interference fit between the sealing sleeve 120 and the through hole ensures that the drive shaft 20 can rotate while achieving a mechanical seal at the through hole. The sealing sleeve 120 uses standardized, serialized and universal parts, has a long service life and a low probability of failure.

[0069] Based on the same inventive concept, this application also proposes a drainage system that uses the aforementioned suction pipe assembly. The specific structure of the suction pipe assembly is as described in the above embodiments. Since it adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0070] In some embodiments, the drainage system further includes a centrifugal pump connected to the suction pipe 30 of the suction pipe assembly.

[0071] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "leveling", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0073] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the leveling height of the first feature is higher than that of the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the leveling height of the first feature is less than that of the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A water absorbing tube assembly, characterized by, include: Pipelines; The drive shaft is rotatably disposed inside the conveying pipe; The suction pipe is connected to the delivery pipe; An impeller is mounted on the drive shaft; An anti-impact component is provided on the drive shaft and located between the water suction pipe and the impeller; The diameter of the anti-impact component gradually increases along the direction from the water suction pipe to the impeller.

2. The water suction tube assembly according to claim 1, wherein The shock-resistant component includes: First shock-resistant component; The second shock absorber is detachably connected to the first shock absorber; The drive shaft is located between the first shock absorber and the second shock absorber.

3. The wick assembly of claim 2, wherein, The first shock absorber includes a first receiving portion, a first guide portion, and two first connecting portions. The two first connecting portions are respectively connected to both ends of the first receiving portion, and the first guide portion is connected to the two first connecting portions. The second shock absorber includes a second receiving portion, a second guide portion, and two second connecting portions. The two second connecting portions are respectively connected to both ends of the second receiving portion, and the second guide portion is connected to the two second connecting portions. The two first connecting parts are detachably connected to the two second connecting parts respectively; The drive shaft is disposed between the first receiving part and the second receiving part; Along the direction from the water suction pipe to the impeller, the distance between the first guide portion and the drive shaft gradually increases; Along the direction from the suction pipe to the impeller, the distance between the second guide portion and the drive shaft gradually increases.

4. The wick assembly of claim 3, wherein, The first shock absorber also includes: Multiple first reinforcing parts, one end of which is connected to the first receiving part, and the other end of which is connected to the first guiding part.

5. The wick assembly of claim 3, wherein, The second shock absorber also includes: Multiple second reinforcing parts, one end of which is connected to the second receiving part, and the other end of which is connected to the second guide part.

6. A water absorbing tube assembly according to any one of claims 1-5, characterized in that Along the axial direction of the drive shaft, the projection of the anti-shock assembly on the conveying pipe and the projection of the impeller on the conveying pipe at least partially overlap.

7. A water absorbing tube assembly according to any one of claims 1-5, characterized in that The anti-impact component has a mounting hole on its end face facing the impeller, and the impeller has a mounting part that is fitted into the mounting hole.

8. A water absorbing tube assembly according to any one of claims 1-5, characterized in that The water suction pipe assembly also includes: The bearing housing is located inside the conveying pipeline; A thrust bearing is disposed within the bearing housing and connected to the drive shaft; The impeller is located between the bearing housing and the anti-shock assembly.

9. The water absorbing tube assembly according to any one of claims 1 to 5, wherein, The water suction pipe assembly also includes: Branch pipe, connected to the conveying pipeline; The branch pipe is located between the suction pipe and the impeller, and a one-way valve is installed inside the branch pipe.

10. A drainage system characterised in that, Includes a centrifugal pump and a suction pipe assembly as described in any one of claims 1-9.

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