A pipe cleaning and unclogging device for pipe interior walls

Abstract

This disclosure provides a pipe inner wall cleaning device, comprising: a cleaning head for contacting and scraping away dirt from the inner wall of a pipe; a push rod connected to the rear end of the cleaning head; a connecting sleeve fitted over the outside of the push rod; a support ring fixed to the middle of the push rod for providing radial support; and a handle connected to the rear end of the push rod for hand-held operation. The push rod includes: reinforcing ribs disposed on its outer circumferential surface along its length; a spiral groove formed on the outer surface of the push rod and extending spirally along its length; and a connecting hole disposed inside the front end of the push rod for housing a connector between the cleaning head and the push rod. This embodiment of the disclosure solves the problem of preventing twisting and deformation during long-distance operation.

Description

Technical Field

[0001] This application relates to pipe cleaning equipment, specifically to a pipe inner wall unblocking and cleaning device. Background Technology

[0002] A pipe cleaning device for unblocking pipe walls is a mechanical or fluid-driven device specifically designed to remove blockages and dirt from inside pipes, aiming to improve maintenance efficiency through rotation or jetting mechanisms; however, during long-distance operation, the device faces the technical challenge of preventing structural distortion caused by pipe bending or material stress, in order to avoid affecting its stability and cleaning effect. Summary of the Invention

[0003] In view of this, the present disclosure provides a pipe inner wall cleaning device, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a pipe inner wall cleaning and unclogging device, comprising:

[0005] Cleaning head, used to contact and scrape away dirt from the inside of pipes;

[0006] A push rod is connected to the rear end of the cleaning head;

[0007] A connecting sleeve is fitted over the outside of the push rod;

[0008] A support ring, fixed to the middle of the push rod, is used to provide radial support;

[0009] A handle, connected to the rear end of the push rod, is used for hand-held force application; wherein,

[0010] The push rod includes:

[0011] Reinforcing ribs are provided on the outer peripheral surface of the push rod along its length direction;

[0012] A spiral groove is formed on the outer surface of the push rod and extends spirally along its length;

[0013] A connecting hole, located inside the front end of the push rod, is used to house the connector between the cleaning head and the push rod; wherein,

[0014] The inner wall of the connecting sleeve is provided with an axial guide groove, which matches and engages with the reinforcing rib of the push rod.

[0015] According to one embodiment, the push rod further includes an internal reinforcing core disposed along the central axis of the push rod.

[0016] According to one embodiment, the cross-section of the reinforcing rib is trapezoidal, and multiple sets of the reinforcing ribs are distributed at equal angles, with a quantity of 4 to 8, to increase circumferential stiffness and resist torsional deformation.

[0017] According to one embodiment, the pitch of the spiral groove is 2 to 5 times the diameter of the push rod, the depth is 5 to 1 mm, and the spiral angle is 30 to 45 degrees.

[0018] According to one embodiment, the cleaning head is fixed to the front end of the push rod via a snap-fit ​​connector. The snap-fit ​​connector includes a locking pin and a spring loading mechanism. The locking pin is an L-shaped elastic rod, with its long end connected to the top of the cleaning head and its short end inserted into the inner wall of the connection hole. The spring loading mechanism is a compression spring sleeved at the insertion point of the short end of the locking pin, used to cooperate with the bending elasticity in the locking pin to form a stable connection with radial buffering effect.

[0019] According to one embodiment, the support rings are in multiple sets and are evenly distributed along the length direction of the push rod. The support rings include radially elastic support arms made of spring steel to provide radial support.

[0020] According to one embodiment, the handle is threaded to the rear end of the push rod, the surface of the handle is provided with anti-slip texture, and a counterweight is provided inside.

[0021] According to one embodiment, the bottom of the spiral groove is provided with stress-dispersing protrusions, and multiple sets of stress-dispersing protrusions are evenly distributed along the bottom of the groove.

[0022] According to one embodiment, the outer peripheral surface of the push rod is covered with a friction-reducing composite material layer, which is integrally formed with the spiral groove and reinforcing ribs.

[0023] This disclosure provides a pipe inner wall cleaning device, comprising: a cleaning head for contacting and scraping away dirt from the inner wall of a pipe; a push rod connected to the rear end of the cleaning head; a connecting sleeve fitted over the outside of the push rod; a support ring fixed to the middle of the push rod for providing radial support; and a handle connected to the rear end of the push rod for hand-held operation. The push rod includes: a reinforcing rib disposed on its outer circumferential surface along its length; a spiral groove formed on the outer surface of the push rod and extending spirally along its length; and a connecting hole disposed inside the front end of the push rod for accommodating a connector between the cleaning head and the push rod. The inner wall of the connecting sleeve is provided with an axial guide groove, which matches and engages with the reinforcing rib of the push rod. This embodiment of the disclosure solves the problem of preventing twisting deformation during long-distance operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the exemplary embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the rear structure of the present invention.

[0027] Figure 3 For the appendix Figure 2 Schematic diagram of the structure after removing the connecting sleeve

[0028] Figure 4 Schematic diagram of partial cross-section structure

[0029] Figure 5 For the appendix Figure 4 Enlarged structural diagram of region A in China

[0030] Figure 6 For the appendix Figure 4 Schematic diagram of the enlarged structure of region B in the middle

[0031] In the diagram: 1. Push rod; 2. Cleaning head; 3. Connecting sleeve; 4. Support ring; 5. Handle; 11. Reinforcing rib; 12. Spiral groove; 13. Connecting hole; 14. Internal reinforcing core; 16. Dispersing protrusion; 17. Anti-friction composite material layer; 21. Snap-on connector; 22. Locking pin; 23. Spring loading mechanism; 31. Axial guide groove; 41. Support arm; 51. Anti-slip texture; 52. Counterweight. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] like Figures 1-6 As shown, a pipe cleaning device for unblocking pipe inner walls according to this application includes a push rod 1, a cleaning head 2, a connecting sleeve 3, a support ring 4, and a handle 5.

[0034] The push rod 1 is used to push the cleaning head 2 into the pipe and withstand the thrust. Its installation position is located in the central part of the device, with its front end connected to the cleaning head 2 and its rear end connected to the handle 5. This component includes reinforcing ribs 11 arranged along the length of its outer peripheral surface to increase axial stiffness and prevent torsion; a spiral groove 12 formed on the outer surface and extending spirally along its length to distribute operating stress and reduce torsional deformation during long-distance pushing; and a connecting hole 13 located inside the front end for fixing the cleaning head 2 with threaded fasteners to ensure stability during the pushing process. Technically, the push rod 1 can be made of high-strength stainless steel, the reinforcing ribs 11 can be integrally formed or welded to form a longitudinal protrusion structure, the spiral groove 12 can be milled by machining, and the connecting hole 13 can be designed as an internally threaded hole to accommodate bolt connections, such as using threaded fasteners to achieve detachable fixing of the cleaning head 2.

[0035] The cleaning head 2 is used to contact and scrape away dirt from the inner wall of the pipe. It is fixed to the front end of the push rod 1 and connected via the connecting hole 13 and threaded fasteners on the push rod 1. Structurally, this component is designed as a scraper or brush to directly adhere to the inner wall of the pipe for dirt removal. Technically, the cleaning head 2 can be made of wear-resistant polyurethane material and equipped with multiple flexible scrapers or hard bristles, for example, through molding to optimize the scraping effect and ensure efficient removal of accumulated dirt during the pushing process.

[0036] The connecting sleeve 3 is used to enhance the connection strength and guidance of the push rod 1. It is fitted around the outside of the push rod 1, covering all or part of its length to provide external support. This component is a tubular sleeve with a smooth inner surface to reduce frictional resistance. It is connected to the push rod 1 either by sliding or fixed assembly. Technically, the connecting sleeve 3 can be made of nylon or aluminum alloy, for example, by injection molding or extrusion to form a hollow tube, with an inner diameter slightly larger than the outer diameter of the push rod 1 to facilitate smooth guidance during operation.

[0037] The support ring 4 provides radial support to resist bending deformation. Its mounting position is fixed in the middle region of the push rod 1, serving as the intermediate support point of the push rod 1. This component has a ring-shaped or flange-shaped structure and is fixed to the surface of the push rod 1 by welding, bolting, or interference fit. Technically, the support ring 4 can be made of carbon steel, for example, machined to a precise outer diameter and welded to the push rod 1 to enhance overall rigidity and prevent lateral bending during the pushing process.

[0038] The handle 5 is used for handheld force application and is installed at the rear end of the push rod 1, facilitating the operator to apply pushing force. This component is designed for an ergonomic grip, and the connection is achieved through threads, snap-fit, or adhesive bonding. Technically, the handle 5 can be injection molded from engineering plastics such as ABS, featuring anti-slip textures and grooves, and is screwed to the rear end of the push rod 1 via an internal thread interface, ensuring comfort and efficient force transmission during operation.

[0039] This solution addresses the technical challenge of preventing torsional deformation during long-distance operation, primarily through the synergistic effect of the reinforcing ribs 11 and spiral grooves 12 in the push rod 1. The reinforcing ribs 11, positioned along the length, increase the axial stiffness and torsional resistance of the push rod 1, preventing overall bending during pushing. The spiral grooves 12, with their helical extension design, disperse and redistribute applied stress during operation, particularly reducing torsional deformation accumulated during long-distance pushing. For example, the geometry of the spiral grooves 12 can absorb operating torque, transforming localized stress into a uniform distribution, thereby reducing the risk of torsion in the push rod 1 and ensuring stability and durability during long-distance pipe dredging.

[0040] like Figure 4 As shown, in one embodiment, the internal structure of the push rod 1 further includes an internal reinforcing core 14 that extends along the central axis of the push rod 1 throughout its entire length to provide continuous internal support. This arrangement ensures that the reinforcing core is precisely aligned with the axis of the push rod 1, thereby uniformly distributing stress during operation. The internal reinforcing core 14 is made of high-strength steel, which has excellent tensile strength and hardness, effectively resisting deformation caused by external loads while maintaining a lightweight design.

[0041] The internal reinforcing core 14 is a solid cylinder or tubular structure with a diameter smaller than the inner diameter of the push rod 1, allowing it to be centrally positioned inside the push rod 1. This design allows for a tight fit between the reinforcing core and the inner wall of the push rod 1, and a secure connection can be achieved through mechanical fixing or adhesive bonding if necessary. During installation, the reinforcing core is completely encapsulated within the internal space of the push rod 1, preventing exposure to the external environment and thus preventing corrosion or wear during pipe unclogging.

[0042] Functionally, the internal reinforcing core 14 primarily addresses the axial force characteristics of the push rod 1, enhancing its overall bending and torsional resistance through its high-rigidity material properties. Specifically, during long-distance pushing operations, this reinforcing core, in conjunction with other structural elements of the push rod 1, addresses the risk of torsion during thrust transmission, ensuring stable advancement of the device within the pipeline.

[0043] For example, the internal reinforcing core 14 can be pre-machined into an elongated cylindrical shape, such as using a high-strength alloy steel rod, and inserted into the central through-hole of the push rod 1. Specifically, the length of the reinforcing core matches that of the push rod 1, and it is fixed in the inner cavity of the push rod 1 by hot pressing or adhesive, ensuring that its axis coincides with the axis of the push rod 1. For example, during assembly, the reinforcing core is first aligned with the central hole of the push rod 1, then pressure is applied to embed it into place, and finally the connection is cured to form an integral structure.

[0044] like Figure 3 and Figure 4 As shown, in one embodiment, the number of reinforcing ribs 11 is configured to be 4 to 8, and these reinforcing ribs 11 are evenly distributed at equal angular intervals along the circumferential direction of the push rod 1. Specifically, this distribution ensures the formation of a symmetrical support structure on the outer peripheral surface of the push rod 1, thereby optimizing the balance and stability of the overall device. In the installation position, the reinforcing ribs 11 are fixed to the outer peripheral surface of the push rod 1 and extend along its length to achieve a continuous reinforcement effect.

[0045] Each reinforcing rib 11 has a trapezoidal cross-section. This structural feature, through its gradually varying width and height, effectively enhances the circumferential stiffness of the push rod 1. Structurally, the trapezoidal cross-section has a wider base that conforms to the surface of the push rod 1, while the top edge is narrower. This geometric configuration helps to distribute stress and resist torsional deformation during operation. In terms of connection, the reinforcing rib 11 is integrally formed with the push rod 1 body or fixed by welding or other methods, ensuring a secure connection during push-through within the pipe.

[0046] For example, six trapezoidal cross-section reinforcing ribs 11 can be milled or extruded on the outer surface of the push rod 1 through metal processing technology and evenly distributed at 60-degree intervals, thereby meeting the functional requirements of enhancing circumferential stiffness and resisting torsional deformation.

[0047] like Figure 3 and Figure 6 As shown, in one embodiment, the spiral groove 12 is a structural feature on the outer surface of the push rod 1, extending spirally along the axial length of the push rod 1 to disperse stress and suppress torsional deformation during pipe cleaning operations. The groove is directly integrated into the outer periphery of the push rod 1, forming a continuous spiral path. Its structure is characterized by shallow grooves to avoid weakening the overall rigidity of the push rod 1. The pitch of the spiral groove 12 is configured between 5 and 2 times the diameter of the push rod 1. This range ensures uniform stress distribution during pushing while accommodating push rods of different diameters. Specifically, the pitch is dynamically adjusted according to the diameter of the push rod 1; for example, the pitch increases accordingly as the diameter increases to maintain the effectiveness of the spiral structure.

[0048] The depth of the spiral groove 12 is limited to between 0.5 mm and 1 mm. This shallow depth design allows the groove to form tiny indentations on the surface of the push rod 1, providing stress relief without significantly affecting the axial load-bearing capacity of the push rod 1. Furthermore, the helix angle of the spiral groove 12 is set between 30 and 45 degrees. This angle range optimizes torsional resistance by balancing the inclination of the spiral trajectory, ensuring reduced cumulative deformation during long-distance pushing. Overall, the spiral groove 12 is directly machined onto the metal substrate of the push rod 1 without additional connecting parts, thus maintaining the continuity and structural integrity of the push rod 1.

[0049] For example, when the diameter of the push rod 1 is 12 mm, the pitch is 48 mm; the depth is 0.8 mm; and the helical angle is 38 degrees. The helical groove 12 is machined on the alloy steel surface of the push rod 1 by a CNC milling machine to ensure that the geometric accuracy and surface finish of the groove meet the design parameters, so as to achieve the functions of stress dispersion and torsional deformation suppression.

[0050] like Figure 4 and Figure 5 As shown, in one embodiment, the cleaning head 2 is fixedly connected to the front end of the push rod 1 using a snap-fit ​​connector 21. This snap-fit ​​connector 21 is designed as a detachable structure to ensure the cleaning head 2 maintains a stable position during pushing. Specifically, the snap-fit ​​connector 21 includes a locking pin 22 and a spring-loaded mechanism 23. The locking pin 22 is embedded inside the front end of the push rod 1 to provide a mechanical locking function, while the spring-loaded mechanism 23 is integrated inside the connector and applies a preload force through the deformation of the locking pin 22 to maintain the locked state. This configuration creates a rigid connection between the cleaning head 2 and the push rod 1, preventing relative displacement.

[0051] Specifically, the locking pin 22 is inserted into a pre-set groove at the front end of the push rod 1 for fixation. Simultaneously, the spring loading mechanism 23 includes a compression spring and a sliding latch. Under the deformation and elastic force of the locking pin 22, the latch automatically engages with the corresponding slot on the base of the cleaning head 2, forming a stable connection with radial buffering effect in conjunction with the elastic force in the spring loading mechanism 23. Furthermore, during operation, pressing the release button releases the constraint of the locking pin 22, allowing for quick disassembly or installation of the cleaning head 2.

[0052] like Figure 1As shown, in one embodiment, an axial guide groove 31 is provided on the inner wall of the connecting sleeve 3. This guide groove extends along the length of the sleeve, forming a continuous groove structure to provide a precise guiding path. The guide groove is designed to match and fit with the reinforcing rib 11 on the outer surface of the push rod 1, ensuring a tight fit during device operation and thus optimizing force transmission during the pushing process. The connecting sleeve 3 is fitted onto the outside of the push rod 1, and the guide groove on its inner wall forms an axially aligned fit with the reinforcing rib 11 of the push rod 1. This structure avoids relative sliding or offset, improving the stability of the overall assembly. The depth and width of the guide groove are precisely calculated to accommodate the geometry of the reinforcing rib 11, achieving a seamless fit.

[0053] Through this interlocking design, when the push rod 1 is subjected to thrust, the reinforcing rib 11 can be firmly engaged in the guide groove, forming a rigid connection and reducing the lateral deformation of the push rod 1 caused by external forces. The guide groove on the inner wall of the connecting sleeve 3 is formed by machining, such as milling or broaching, to ensure that the groove is smooth and dimensionally consistent, facilitating its engagement with the reinforcing rib 11. This structural combination not only strengthens the interface between the push rod 1 and the connecting sleeve 3 but also optimizes the distribution of axial forces.

[0054] Specifically, the axial guide groove 31 can be achieved by machining a rectangular groove of equal depth on the inner wall of the connecting sleeve 3. The groove extends linearly along the axial direction of the sleeve, while the reinforcing rib 11 of the push rod 1 is set as a corresponding protruding strip structure, which is fixed to the outer periphery of the push rod 1 by means of extrusion or welding. Specifically, the cross-sectional shape of the reinforcing rib 11 matches the cross-section of the guide groove, for example, it is trapezoidal or rectangular. The two are fixed by sliding engagement during assembly to ensure that the push rod 1 maintains precise guidance when moving axially within the sleeve.

[0055] like Figure 3 and Figure 4 As shown, in one embodiment, there are multiple support rings 4, evenly spaced along the length of the push rod 1, to ensure uniform support throughout the entire pushing stroke. Each support ring 4 includes a radially resilient support arm 41 made of spring steel, giving it high elasticity and resilience. The support arm 41 is configured to extend radially outward from the body of the support ring 4, forming a resilient contact surface for dynamically adapting to changes in the inner diameter within the pipe.

[0056] Specifically, the support ring 4 is fixedly installed on the outer peripheral surface of the push rod 1, and its distribution spacing is optimized according to the length of the push rod 1 and the pipe size. The radial elastic support arm 41 adopts an arc or curved design, which allows it to elastically deform and return to its original shape when subjected to external force. This structure allows the support arm 41 to continuously apply radial force during the pushing process to counteract the bending moment and maintain the linear stability of the push rod 1.

[0057] For example, the support ring 4 can be directly fixed to the outer surface of the push rod 1 by welding or threaded fasteners. The support arms 41 are arranged in a circumferential array on the support ring 4. When the device is pushed into the pipe, the spring steel material of the support arms 41 causes it to elastically compress to fit against the pipe wall, thereby realizing the dynamic support function.

[0058] like Figure 1 and Figure 3 As shown, in one embodiment, the handle 5 is fixed to the rear end of the push rod 1 via a threaded connection, ensuring stability and detachability during operation, facilitating maintenance or replacement. The outer surface of the handle 5 is provided with anti-slip texture 51 to increase friction and stability when held, preventing slippage. A balance weight 52 is also built into the handle 5, completely housed within its cavity structure, to optimize force balance during pushing and reduce the risk of twisting or deformation of the push rod 1 through weight distribution.

[0059] Specifically, the counterweight 52 is positioned in the center of the handle 5 to evenly distribute the operating force and avoid uneven loading. The overall structure of the handle 5 includes an outer shell enclosing the counterweight, which is precisely fitted to the rear end of the push rod 1 via a threaded interface for a seamless connection. This design not only enhances the mechanical strength of the overall device but also ensures efficient force transmission during long-distance pushing.

[0060] For example, the handle 5 is made of metal or high-strength plastic and has a cavity inside in which a lead or steel counterweight 52 is embedded and fixed. At the same time, the outer surface of the handle 5 is molded with anti-slip texture 51. Specifically, the rear end of the push rod 1 is machined with an external thread, while the front end of the handle 5 is provided with a matching internal thread. The two are fastened together by tightening to ensure that the counterweight 52 effectively counteracts torsional stress during the pushing process.

[0061] like Figure 3 As shown, in one embodiment, the bottom region of the spiral groove 12 is provided with stress-dispersing protrusions 16. These protrusions are formed directly on the bottom surface of the spiral groove 12 to enhance structural integrity. Specifically, the stress-dispersing protrusions 16 are uniformly arranged along the entire length of the groove bottom to ensure that the operating stress can be effectively dispersed when the push rod 1 is subjected to axial thrust or torsional load. The protrusions are typically continuous or discrete in shape, and their installation positions are located in the center or edge region of the groove bottom to avoid stress concentration points. Through this arrangement, the protrusions work synergistically with the spiral extension characteristics of the spiral groove 12 to further optimize the stress distribution path and prevent the push rod 1 from experiencing localized plastic deformation or fatigue failure during long-distance operation.

[0062] The stress-dispersing protrusions 16 consist of protrusions with regular geometric shapes, such as cylindrical, hemispherical, or trapezoidal cross-sections. These protrusions are integrally formed with the tank bottom or fixed by additional processes. The size and spacing of the protrusions are designed based on the material properties of the push rod 1 and the operating load to ensure uniform load distribution. In terms of connection, the protrusions are directly attached to the surface of the tank bottom without additional connectors, which simplifies the manufacturing process and improves the overall structural strength. The distribution density and height of the protrusions are adjustable to adapt to different piping conditions, achieving reliable operating stress management.

[0063] Specifically, the stress-dispersing protrusions 16 are directly formed on the bottom of the spiral groove 12 through machining or casting. For example, when a CNC milling machine is used to engrave grooves on the outer surface of the push rod 1, uniformly spaced hemispherical protrusions are simultaneously machined on the bottom of the groove. Specifically, the protrusions are distributed along the spiral path at the bottom of the groove in a manner of 2-3 per centimeter, with a height of 1 / 5 to 1 / 3 of the groove depth, thereby effectively dispersing stress through local reinforcement structure.

[0064] like Figure 6 As shown, in one embodiment, a friction-reducing composite material layer 17 is applied to the outer peripheral surface of the push rod 1. This layer is directly bonded to the base structure of the push rod 1 and integrally formed with the pre-installed reinforcing ribs 11 and helical grooves 12 on the push rod 1. Specifically, the friction-reducing composite material layer 17 is embedded into the surface of the push rod 1 through a fusion process, covering the entire outer peripheral area, including the protruding portions of the reinforcing ribs 11 and the recessed areas of the helical grooves 12, thereby forming a seamless integral structure. This integral forming method ensures that the friction-reducing layer is perfectly matched with the geometric features of the push rod 1 (such as the axial extension of the reinforcing ribs 11 and the helical path of the helical grooves 12), avoiding interface separation or stress concentration. This structural design focuses on reducing frictional resistance during the pushing process through the inherent properties of the friction-reducing material (such as low coefficient of friction and high wear resistance), while utilizing the rigidity of the composite material to enhance the overall surface strength of the push rod 1 and suppress the risk of torsional deformation of the push rod 1 during operation.

[0065] Specifically, the friction-reducing composite layer 17 can be integrally formed through injection molding. For example, the substrate of the push rod 1 (e.g., metal or high-strength polymer) is first pre-machined with the geometric contours of the reinforcing ribs 11 and the spiral grooves 12. Then, the friction-reducing composite material (e.g., polytetrafluoroethylene composite) is injected into a mold and cured, so that it completely fills the recesses of the spiral grooves 12 and wraps the protrusions of the reinforcing ribs 11, thereby forming a seamless layered structure covering the entire outer peripheral surface. Specifically, this process involves precise control of temperature and pressure to ensure chemical bonding or mechanical interlocking between the friction-reducing material and the substrate of the push rod 1, for example, by achieving uniform coverage and integral connection through thermoforming or reaction injection molding.

[0066] In actual operation, when this device is used, the operator first holds the handle 5 and applies a pushing force through the handle 5 to push the push rod 1 forward inside the pipe. The push rod 1 drives the cleaning head 2 at the front end to contact the inner wall of the pipe, allowing the cleaning head 2 to scrape off the dirt attached to the wall. At the same time, the connecting sleeve 3 is fitted onto the outside of the push rod 1 to enhance the connection strength of the push rod 1 and provide a guiding function to ensure the stability of the pushing direction. The support ring 4 is fixed in the middle of the push rod 1 to provide radial support to resist bending deformation during the pushing process. The reinforcing ribs 11 on the surface of the push rod 1 are set along the length direction to increase axial stiffness and prevent torsion, while the spiral groove 12 extends spirally along the length to disperse operating stress and reduce torsional deformation during long-distance pushing. In addition, the connecting hole 13 at the front end of the push rod 1 fixes the cleaning head 2 with threaded fasteners to ensure that the cleaning head 2 remains stable during the pushing process, thereby completing the task of unblocking and cleaning the inner wall of the pipe.

[0067] 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0068] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pipe inner wall cleaning and unclogging device, characterized in that, include: Cleaning head (2) is used to contact and scrape off dirt from the inside of the pipe; Push rod (1) is connected to the rear end of the cleaning head (2); A connecting sleeve (3) is fitted over the outside of the push rod (1); A support ring (4) is fixed to the middle of the push rod (1) to provide radial support; A handle (5), connected to the rear end of the push rod (1), is used for hand-held force application; wherein, The push rod (1) includes: A reinforcing rib (11) is provided on the outer peripheral surface of the push rod (1) along its length direction; A spiral groove (12) is formed on the outer surface of the push rod (1) and extends spirally along its length; A connecting hole (13) is provided inside the front end of the push rod (1) for placing the connector between the cleaning head (2) and the push rod (1); wherein, The inner wall of the connecting sleeve (3) is provided with an axial guide groove (31), and the guide groove (31) is matched and fitted with the reinforcing rib (11) of the push rod (1).

2. The pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The push rod (1) also includes an internal reinforcing core (14), which is arranged along the central axis of the push rod (1).

3. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The cross-section of the reinforcing rib (11) is trapezoidal, and multiple sets of the reinforcing ribs (11) are distributed at equal angles, with a quantity of 4 to 8, to increase circumferential stiffness and resist torsional deformation.

4. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The pitch of the spiral groove (12) is 2 to 5 times the diameter of the push rod (1), the depth is 0.5 to 1 mm, and the spiral angle is 30 to 45 degrees.

5. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The cleaning head (2) is fixed to the front end of the push rod (1) by a snap-fit ​​connector (21). The snap-fit ​​connector (21) includes a locking pin (22) and a spring loading mechanism (23). The locking pin (22) is an L-shaped elastic rod with its long end connected to the top of the cleaning head (2) and its short end inserted into the inner wall of the connection hole (13). The spring loading mechanism (23) is a compression spring sleeved at the insertion point of the short end of the locking pin (22) to cooperate with the bending elastic force in the locking pin (22) to form a stable connection with radial buffering effect.

6. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The support rings (4) are in multiple sets and are evenly distributed along the length direction of the push rod (1). The support rings (4) include radial elastic support arms (41) made of spring steel to provide radial support.

7. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The handle (5) is threaded to the rear end of the push rod (1). The surface of the handle (5) is provided with anti-slip texture (51), and a balance weight (52) is provided inside.

8. A pipe inner wall cleaning and unblocking device according to claim 1 or 3, characterized in that: The bottom of the spiral groove (12) is provided with stress-dispersing protrusions (16), and multiple sets of stress-dispersing protrusions (16) are evenly distributed along the bottom of the groove.

9. A pipe inner wall cleaning and unblocking device according to claim 1, characterized in that: The outer peripheral surface of the push rod (1) is covered with a friction-reducing composite material layer (17), which is integrally formed with the spiral groove (12) and the reinforcing rib (11).

Images