Pipeline dredger

Abstract

The invention relates to pipeline system dredging equipment, and discloses a pipeline dredger which comprises a dredging shell, a dredging mechanism and a pressure relief mechanism. A dredging cover plate is arranged above the dredging shell, a dredging partition plate is arranged in the dredging shell, a first sealing cavity is defined by the inner surface of the dredging shell, the lower surface of the dredging cover plate and the upper surface of the dredging partition plate, and a dredging cavity is defined by the inner surface of the dredging shell and the lower surface of the dredging partition plate; the dredging mechanism sequentially penetrates through the dredging cover plate and the dredging partition plate and is rotationally connected with the dredging cover plate and the dredging partition plate, and the dredging mechanism can do reciprocating motion in the penetrating direction. And the pressure relief mechanism is communicated with the dredging cavity through a connecting pipe. According to the pipeline dredger, under-pressure operation can be achieved, manual work is replaced to dredge media in a pipeline system, the dredging efficiency is improved, and health and safety of workers are guaranteed.

Description

Technical Field

[0001] This invention relates to equipment for unblocking pipeline systems, and more specifically, to a pipeline unblocker. Background Technology

[0002] In modern industrial production, thermometers, pressure gauges, and flow meters, as key control components of pipeline systems, are widely used in media transportation and process control in fields such as petroleum, chemical, power, and pharmaceutical. However, because the media often contain solid impurities, crystals, or polymer deposits, the pressure tapping pipes and venting / draining pipes of these instruments are highly susceptible to blockage due to these impurities, crystals, or polymer deposits. Such blockages not only lead to abnormal media flow and pressure fluctuations but may also cause system shutdowns, equipment damage, and even safety accidents. Currently, the mainstream solution for blockages still relies on traditional pressure shutdown and disassembly unblocking processes, but this method has significant technical drawbacks and economic constraints.

[0003] Therefore, a new type of pipe cleaner needs to be designed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pipe dredging device that can perform pressurized operation, replacing manual dredging of the medium inside the pipe system, which not only improves dredging efficiency but also ensures the health and safety of workers.

[0005] To address the aforementioned technical problems, the present invention provides a pipe unclogging device, comprising: A dredging housing is provided with a dredging cover plate on the top of the dredging housing and a dredging partition plate inside the dredging housing. The inner surface of the dredging housing, the lower surface of the dredging cover plate and the upper surface of the dredging partition plate together form a first sealing cavity, and the inner surface of the dredging housing and the lower surface of the dredging partition plate together form a dredging cavity. A dredging mechanism, wherein the dredging mechanism sequentially passes through the dredging cover and the dredging partition, and is rotatably connected to both the dredging cover and the dredging partition, and is capable of reciprocating motion along the penetration direction; and, A pressure relief mechanism is connected to the unblocking cavity via a connecting pipe.

[0006] Furthermore, the unblocking mechanism includes an unblocking rod and an unblocking component disposed at the end of the unblocking rod away from the unblocking cover plate. The unblocking rod is threadedly connected to the unblocking cover plate and the unblocking partition plate respectively. A handle is provided at the end of the unblocking rod away from the unblocking partition plate for driving the unblocking rod to rotate.

[0007] Furthermore, the unblocking assembly includes a drill bit and a mounting component. The end of the unblocking rod has a first groove structure, and the end of the drill bit facing the unblocking rod has a protrusion structure that matches the first groove structure. The first groove structure and the protrusion structure are fixedly connected by the mounting component.

[0008] Furthermore, a guide is provided on the upper surface of the unblocking cover plate, and the guide is threadedly connected to the unblocking rod.

[0009] Furthermore, the pressure relief mechanism includes a pressure relief housing, a pressure relief cover plate is provided on the top of the pressure relief housing, a pressure relief cavity is formed by the inner surface of the pressure relief housing and the lower surface of the pressure relief cover plate, a sealing component is movably installed inside the pressure relief cavity, a pressure relief hole is formed on the pressure relief housing, the connecting pipe, the pressure relief cavity and the pressure relief hole are connected to form a pressure relief channel, and the sealing component can control the opening and closing of the pressure relief channel.

[0010] Furthermore, the sealing assembly includes a sealing element and a pull rod, the pull rod passing through the pressure relief cover plate, the sealing element being located inside the pressure relief cavity and installed at the lower end of the pull rod, and a reset element being provided between the sealing element and the pressure relief cavity, the reset element being adapted to provide an elastic force to the sealing element to block the pressure relief channel.

[0011] Furthermore, the reset element is an elastic element.

[0012] Furthermore, a second groove structure is formed on the working surface of the unblocking housing facing the pressure relief mechanism. The second groove structure, together with the outer surface of the connecting pipe and the outer surface of the pressure relief mechanism, forms a second sealing cavity. A sealing ring is provided in the second sealing cavity, and the sealing ring is fitted onto the connecting pipe.

[0013] Furthermore, a sealing element is provided inside the first sealing cavity.

[0014] Furthermore, a mounting skirt is formed on the lower periphery of the unblocking housing, and the mounting skirt is detachably mounted on the outer flange of the root valve via a connector.

[0015] The beneficial effects of the present invention through the above technical solution are as follows: This invention provides a pipe cleaner, comprising a cleaning shell, a cleaning mechanism, and a pressure relief mechanism. A partition is installed inside the cleaning shell, forming a first sealing cavity and a cleaning cavity within the shell. The cleaning mechanism passes through both the first sealing cavity and the cleaning cavity, and reciprocates along the penetration direction. This mechanism unclogs the medium within the pipe system. Furthermore, a pressure relief mechanism is installed on the cleaning shell via a connecting pipe. This mechanism relieves pressure within the cleaning cavity, allowing for unclogging of the medium within the pipe system without shutting down or depressurizing the system. The pipe cleaner provided by this invention has a simple structure and enables pressurized operation, replacing manual unclogging of the medium within the pipe system, thus improving cleaning efficiency and ensuring the health and safety of workers.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of a specific embodiment of the pipe unclogging device of the present invention; Figure 2 This is one of the cross-sectional views of a specific embodiment of the pipe unclogging device of the present invention; Figure 3 This is a second cross-sectional view of a specific embodiment of the pipe unclogging device of the present invention; Figure 4 yes Figure 3 A magnified view of a portion at point A; Figure 5 This is a schematic diagram of a specific embodiment of the end of the drain cleaning rod of the pipe cleaner of the present invention; Figure 6 This is a schematic diagram of a specific embodiment of the drill bit of the pipe unclogging device of the present invention.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention, and the scope of protection of the present invention is not limited to the specific embodiments described below.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "equipped with," "installed," "fitting," "connected," and "arranged" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate connector; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0022] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" are defined as the inner and outer parts of the corresponding components. In addition, "outer surface" and "inner surface" are defined based on the direction in which the corresponding components such as the unblocking housing 1 are used. Specifically, in the accompanying drawings provided by this invention, the orientations or positional relationships used are based on the orientations or positional relationships shown in the drawings. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to 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 invention. The directional terms of this invention should be understood in conjunction with the actual installation state.

[0023] See Figures 1 to 6 This invention provides a pipe cleaner, including a cleaning housing 1, a cleaning mechanism 2, and a pressure relief mechanism 3. A cleaning cover 11 is disposed on top of the cleaning housing 1, and a cleaning partition 12 is disposed inside the cleaning housing 1. The inner surface of the cleaning housing 1, the lower surface of the cover 1, and the upper surface of the partition 1 together form a first sealing cavity 13. The inner surface of the cleaning housing 1 and the lower surface of the cleaning partition 12 together form a cleaning cavity 14. The cleaning mechanism 2 passes through the cleaning cover 11 and the cleaning partition 12 sequentially, and rotates with both the cleaning cover 11 and the cleaning partition 12. The cleaning mechanism 2 can reciprocate along the penetration direction. The pressure relief mechanism 3 is connected to the cleaning cavity 14 via a connecting pipe 31. In this pipe cleaner, the cleaning housing 1 serves as the main structural component of the entire device and can be connected to the parts of the pipe system that need to be dredged. The penetrating direction of the cleaning mechanism 2 is perpendicular to the axis of the pipe system. During the reciprocating motion, it can break up or dredge the medium blocking the pipe system. The pressure relief mechanism 3 can relieve the pressure inside the cleaning housing 1 to prevent excessive pressure from causing the cleaning mechanism 2 to malfunction.

[0024] It is understood that, as some specific embodiments of the present invention, "the inner surface of the unblocking housing 1" in the above technical solution refers to the working surface of the unblocking housing 1 facing the partition, wherein, as... Figure 1 As shown, the unblocking housing 1 is a cylindrical tubular structure, and the inner surface refers to the inner circumferential surface of the tubular structure; the "lower surface of the unblocking cover 11" refers to the working surface of the unblocking cover 11 facing the unblocking baffle 12; the "upper surface of the unblocking baffle 12" refers to the working surface of the unblocking baffle 12 facing the unblocking cover 11; the "lower surface of the unblocking baffle 12" refers to the working surface of the unblocking baffle 12 facing away from the unblocking cover 11; the "penetration direction" refers to the line of defense perpendicular to the axis of the piping system. Meanwhile, the installation method of the unblocking cover 11 and the unblocking housing 1 is as follows: Figure 1 As shown, the edge of the unclogging cover 11 can be fixedly connected to the upper edge of the unclogging housing 1 by fasteners such as bolts.

[0025] It should be noted that in existing pipeline systems, once a media blockage occurs, the pipeline system needs to be depressurized and disassembled to perform complex procedures such as system depressurization, pipeline isolation, valve disassembly and assembly, manual unblocking, and system reset. Each handling requires coordination among multiple departments, which is time-consuming and labor-intensive, increasing the operating cost of the pipeline system. Furthermore, frequent shutdowns accelerate the secondary deposition of media within the pipeline, creating a vicious cycle. The pipeline unblocking device provided by this invention can be installed on the pipeline system as a standalone component. Through the reciprocating insertion and removal motion of the unblocking mechanism 2 along the through-flow direction, it can break up or unblock the media inside the pipeline, allowing the media to flow and thus achieving the effect of unblocking the pipeline media. During this process, the pipeline system does not need to be shut down. Because this application can be used as an independent component outside the pipeline system, and because the pipeline system does not need to be shut down or disassembled during pipeline unblocking, the possibility of mechanical stress damage to precision components such as valve stems and valve cores in the pipeline system is significantly reduced, further extending the service life of the pipeline system and reducing operating costs. Meanwhile, although the pipe cleaner provided by this invention is a component independent of the pipe system, it is closely connected to the pipe system during use. Therefore, during the cleaning process, it eliminates the possibility of leakage of contaminated media after disassembling the pipe system, ensuring the safety of the surrounding environment. In addition, this invention also includes a pressure relief mechanism 3. As a result, the pipe system does not need to be depressurized and disassembled during media cleaning, which not only reduces downtime but also ensures pressure balance in the pipe system.

[0026] The pipe cleaner provided by this invention has a simple structure. It only needs to be installed in sections of the pipe system prone to blockage, without requiring excessive modifications to the pipe system itself. It has a wide range of applications and high cleaning efficiency. Furthermore, this invention also incorporates a cleaning baffle 12 and a first sealing cavity 13 to prevent the cleaning mechanism 2 from carrying the medium out of the cleaner during the cleaning process. The cleaning baffle 12 can intercept these media.

[0027] See Figure 2 and Figure 3 As a specific embodiment of the present invention, the unblocking mechanism 2 includes an unblocking rod 21 and an unblocking component 22 disposed at the end of the unblocking rod 21. The unblocking component 22 is disposed at the end of the unblocking rod 21 away from the unblocking cover plate 11, and can crush and unblock the medium inside the pipe system. The unblocking rod 21 is connected to the unblocking cover plate 11 and the unblocking partition plate 12 by a thread. A handle 18 is provided at the end of the unblocking rod 21 away from the unblocking component 21. When unblocking work is required, the worker applies a rotational force to the unblocking rod 21 through the handle 18, causing the unblocking rod 21 to rotate around its own axis and then move along the through direction to unblock the medium inside the pipe. By rotating in both the forward and reverse directions, the unblocking rod 21 reciprocates along the through direction to achieve a better unblocking effect. During this process, the worker will not directly contact the medium inside the pipe, and the worker's personal safety is well guaranteed.

[0028] Further, see Figure 3 , Figure 5 as well as Figure 6 In one specific embodiment of the present invention, the unblocking component 22 includes a drill bit 221 and a mounting component 222. A first groove structure 211 is formed at one end of the unblocking rod 21 on which the unblocking component 22 is mounted. A protruding structure 223 matching the first groove structure 211 is formed on the drill bit 221. Corresponding mounting holes are formed on both the first groove structure 211 and the protruding structure 223. The protruding structure is inserted into the first groove structure 211, and then the mounting component 222 is inserted into the mounting hole to achieve a fixed installation of the drill bit 221 and the unblocking rod 21. In another specific embodiment, the drill bit 221 can be a conical structure with a groove structure formed on its outer circumference. The tip of the conical structure faces the inside of the pipe, concentrating pressure during unblocking to achieve a better unblocking effect.

[0029] In addition, as some specific embodiments of the present invention, a guide member 16 is also provided on the unblocking cover plate 11. The unblocking rod 21 is threadedly connected to the guide member 16. The guide member 16 can ensure that the direction of the unblocking rod 21 will not deviate during the movement process, and also enhance the connection strength between the unblocking rod 21 and the unblocking cover plate 11.

[0030] See Figure 3 and Figure 4 The pressure relief mechanism 3 of this invention includes a pressure relief housing 32, a pressure relief cover plate 34 on top of the pressure relief housing 32, and a pressure relief cavity 321 formed by the inner surface of the pressure relief housing 32 and the lower surface of the pressure relief cover plate 34. A sealing component 33 is movably installed inside the pressure relief cavity 321, and a pressure relief hole 322 is formed on the pressure relief housing 32. The connecting pipe 31, the pressure relief cavity 321, and the pressure relief hole 322 are connected to form a pressure relief channel. The sealing component 33 can control the opening and closing of the pressure relief channel. During the unblocking operation, the pressure in the unblocking device will affect the pressure inside the pipeline system, and the pressure medium inside the pipeline will leak out. Therefore, in order to ensure the pressure balance inside the pipeline system and to treat the pressure medium, a pressure relief mechanism 3 is set outside the unblocking housing 1. The pressure relief mechanism can enter the pressure relief cavity 321 through the connecting pipe 31 and be discharged through the pressure relief hole 322. The operator only needs to use a collection device to collect the pressure medium discharged from the pressure relief hole 322. In order to ensure the pressure balance inside the pipeline, the staff can control whether the sealing component 33 seals the pressure relief channel or partially seals the pressure relief channel according to the pressure inside the pipeline.

[0031] Specifically, the sealing assembly 33 includes a sealing element 331 and a pull rod 332. The pull rod 332 passes through the pressure relief cover plate 34. The sealing element 331 is located inside the pressure relief chamber 321 and is installed at the lower end of the pull rod 332. A reset element 333 is provided between the sealing element 331 and the pressure relief chamber 321. The reset element 333 is adapted to provide an elastic force to the sealing element 331 to block the pressure relief channel.

[0032] It should be noted that when the staff notices the need for pressure relief, they pull the lever 332. Under the action of the lever 332, the sealing element 331 releases the blockage of the pressure relief channel, and pressure relief begins after the channel is clear. The function of the reset element 333 is to ensure that the sealing element 331 always blocks the pressure relief channel when pressure relief is not required, preventing the outflow of pressure medium or affecting the pressure balance inside the pipeline. As a preferred embodiment of the reset element 333, the reset element 333 can be an elastic element, i.e., a spring. When pressure relief is not in progress, both ends of the elastic element abut against the pressure relief cover plate 34 and the sealing element 331, respectively, applying elastic pressure to the sealing element 331 so that it always blocks the pressure relief channel.

[0033] To ensure the sealing performance of the pipe cleaner provided by this invention, a second groove structure is formed on the working surface of the cleaning housing 1 facing the pressure relief mechanism 3. The second groove structure, together with the outer surface of the connecting pipe 31 and the outer surface of the pressure relief mechanism 3, forms a second sealing cavity 4. A sealing ring 41 is provided inside the second sealing cavity 4 and is fitted onto the connecting pipe 31. The sealing ring 41 can improve the installation sealing performance between the connecting pipe 31, the pressure relief mechanism 3, and the cleaning housing 1.

[0034] In addition, in order to prevent the medium from splashing out during the pressurized operation, a sealing element 15 is also provided in the first sealing cavity 13. The sealing element 15 can fill the entire first sealing cavity 13, blocking the medium that follows the movement of the unblocking rod 21, and preventing the medium from being carried out of the unblocker by the unblocking rod 21.

[0035] Furthermore, in order to better unclog the inside of the pipeline system, the lower edge of the unclogging shell 1 of the unclogging device provided in this application is formed with a mounting skirt 17. The unclogging device provided in this invention can be detachably installed on the outer flange of the root valve in the pipeline system through the mounting skirt 17. Detachable installation can facilitate further cleaning of the unclogging device after unclogging work, and installation on the outer flange can minimize the modification and impact on the structure of the pipeline system. The pipe unclogging device provided by this invention has a simple structure. Taking the unclogging of the root of a gas medium pressure measuring instrument as an example, in use, the unclogging device can be installed on the outer flange of the root valve of the pipeline system using bolts or other mounting parts 222. The existing valve on the root pipeline is opened, and then the handle 18 is turned, causing the unclogging rod 21 to rotate around its own axis. With the threaded engagement, the unclogging rod 21 can drill into the root valve pipeline along the penetration direction while rotating. By repeatedly turning the handle 18, the unclogging rod 21 repeatedly exits and re-enters the root valve pipeline, utilizing... The root valve pipeline is cleared using the drill bit 221 on the clearing rod 21. After clearing, the root valve is closed, and then the pull rod 332 is pulled, causing the sealing element 331 to move upward and compressing the spring, which acts as an elastic element. This connects the pressure relief channel formed by the connecting pipe 31, the pressure relief chamber 321, and the pressure relief hole 322. The pressure medium between the clearing chamber 14 and the root valve enters the pressure relief chamber 321 through the connecting pipe 31 and then exits through the pressure relief hole 322, thus achieving pressure relief. The sealing element 15 in the first sealing chamber 13 is used to prevent the pressure medium from leaking out. After clearing, the pipe clearing tool can be removed for cleaning for future use. The pipe clearing tool provided by this invention can safely and efficiently remove blockages under pressure, avoiding the risks of secondary accumulation and splashing caused by pressure stoppage disassembly or pressure release in traditional methods. It can achieve pressurized operation without pressure stoppage disassembly, reducing downtime. By incorporating anti-splash designs such as the sealing element 15 and the unblocking baffle 12, backflow of impurities is prevented, enhancing safety. This achieves efficient unblocking of obstructing media. The mechanical feed of the unblocking rod 21, combined with rotational force and the drill bit 221, makes it suitable for hard or sticky blockages.

[0036] In the description of this invention, references to terms such as "one embodiment," "some embodiments," and "a specific implementation" 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 the invention. In this invention, 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.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A drain cleaner, characterized in that, include: A dredging housing (1) is provided with a dredging cover plate (11) on its upper part and a dredging partition plate (12) is provided inside the dredging housing (1). The inner surface of the dredging housing (1), the lower surface of the dredging cover plate (11) and the upper surface of the dredging partition plate (12) together form a first sealing cavity (13). The inner surface of the dredging housing (1) and the lower surface of the dredging partition plate (12) together form a dredging cavity (14). The unblocking mechanism (2) passes through the unblocking cover plate (11) and the unblocking partition plate (12) in sequence, and is rotatably connected to the unblocking cover plate (11) and the unblocking partition plate (12) respectively. The unblocking mechanism (2) can reciprocate along the penetrating direction. The pressure relief mechanism (3) is connected to the unblocking cavity (14) through the connecting pipe (31).

2. The pipe cleaner according to claim 1, characterized in that, The unblocking mechanism (2) includes an unblocking rod (21) and an unblocking assembly (22) disposed at the end of the unblocking rod (21) away from the unblocking cover plate (11). The unblocking rod (21) is threadedly connected to the unblocking cover plate (11) and the unblocking partition plate (12) respectively. A handle (18) is provided at the end of the unblocking rod (21) away from the unblocking partition plate (12) for driving the unblocking rod (21) to rotate.

3. The pipe cleaner according to claim 2, characterized in that, The unblocking assembly (22) includes a drill bit (221) and a mounting member (222). The end of the unblocking rod (21) has a first groove structure (211). The end of the drill bit (221) facing the unblocking rod (21) has a protrusion structure (223) that matches the first groove structure (211). The first groove structure (211) and the protrusion structure (223) are fixedly connected by the mounting member (222).

4. The pipe cleaner according to claim 2, characterized in that, The upper surface of the unblocking cover (11) is also provided with a guide (16), which is threadedly connected to the unblocking rod (21).

5. The pipe cleaner according to claim 1, characterized in that, The pressure relief mechanism (3) includes a pressure relief housing (32), a pressure relief cover plate (34) is provided above the pressure relief housing (32), the inner surface of the pressure relief housing (32) and the lower surface of the pressure relief cover plate (34) form a pressure relief cavity (321), a sealing component (33) is movably installed inside the pressure relief cavity (321), a pressure relief hole (322) is formed on the pressure relief housing (32), the connecting pipe (31), the pressure relief cavity (321) and the pressure relief hole (322) are connected to form a pressure relief channel, and the sealing component (33) can control the opening and closing of the pressure relief channel.

6. The pipe cleaner according to claim 5, characterized in that, The sealing assembly (33) includes a sealing element (331) and a pull rod (332). The pull rod (332) passes through the pressure relief cover plate (34). The sealing element (331) is located inside the pressure relief chamber (321) and is installed at the lower end of the pull rod (332). A reset element (333) is provided between the sealing element (331) and the pressure relief chamber (321). The reset element (333) is adapted to provide an elastic force to the sealing element (331) to block the pressure relief channel.

7. The pipe cleaner according to claim 6, characterized in that, The reset element (333) is an elastic element.

8. The pipe cleaner according to claim 5, characterized in that, The unblocking housing (1) has a second groove structure on its working surface facing the pressure relief mechanism (3). The second groove structure, together with the outer surface of the connecting pipe (31) and the outer surface of the pressure relief mechanism (3), forms a second sealing cavity (4). A sealing ring (41) is provided in the second sealing cavity (4), and the sealing ring (41) is fitted on the connecting pipe (31).

9. The drain cleaner according to any one of claims 1 to 8, characterized in that, The first sealing cavity (13) is provided with a sealing element (15).

10. The drain cleaner according to any one of claims 1 to 8, characterized in that, The lower edge of the unblocking housing (1) is formed with a mounting skirt (17), which is detachably mounted on the outer flange of the root valve via a connector.

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