Pipe cleaning device and pipe cleaning system

Abstract

The present application relates to the technical field of pipe cleaning, and provides a pipe cleaning device and a pipe cleaning system. The pipe cleaning device comprises a base and a cleaning head assembly. The cleaning head assembly comprises a flushing part and a brushing part. The flushing part and the brushing part are rotatably arranged on the base. The flushing part comprises a first liquid discharge end. The brushing part comprises a second liquid discharge end and a brush body. The brush body is arranged on the peripheral surface of the second liquid discharge end. The fluid pressure of the second liquid discharge end is lower than that of the first liquid discharge end. The flushing part sprays high-pressure fluid to the inner wall of the pipe to impact and strip stubborn stains. The brushing part rotates to drive the brush body to scrape the pipe wall. At the same time, the second liquid discharge end sprays low-pressure and high-flow fluid to flush and discharge the stripped impurities. The high-pressure impact of the flushing part, the mechanical scraping of the brush body and the low-pressure flushing of the second liquid discharge end are cooperated with each other to realize one-time efficient cleaning of the inner wall of the pipe. The pipe cleaning device has the beneficial effects of good cleaning effect, high operation efficiency and compact structure.

Description

Technical Field

[0001] This invention relates to the field of pipe cleaning technology, specifically to pipe cleaning devices and pipe cleaning systems. Background Technology

[0002] Stainless steel pipe is a hollow, long, round steel material, widely used in industrial pipelines and mechanical structural components in petroleum, chemical, medical, food, light industry, and machinery industries. During the production process, stainless steel pipes require internal cleaning for subsequent processing, enhancing their corrosion resistance.

[0003] However, traditional solutions typically use mechanical brushing to clean the inner wall of steel pipes. The cleaning devices in traditional solutions can only perform mechanical brushing, and the cleaning effect is not good if there are strong stains or impurities inside the steel pipe. Summary of the Invention

[0004] In view of this, the present invention provides a pipe cleaning device and a pipe cleaning system to solve the problem that "the cleaning effect of traditional solutions is not good and it is difficult to clean the stains with strong adhesion to the inner wall of steel pipes".

[0005] In a first aspect, the present invention provides a pipe cleaning device, including a base and a cleaning head assembly; the cleaning head assembly includes a rinsing section and a brushing section, the rinsing section and the brushing section are rotatably disposed on the base, the rinsing section includes a first drain end, the brushing section includes a second drain end and a brush body, the brush body is disposed on the circumferential surface of the second drain end, and the fluid pressure of the second drain end is less than the fluid pressure of the first drain end.

[0006] In one optional embodiment, the pipe cleaning device includes a first pipe body and a second pipe body, the first pipe body being connected to a first drain end and the second pipe body being connected to a second drain end; the first pipe body and the second pipe body are coaxially arranged, the first pipe body passing through the inside of the second pipe body, or the first pipe body being sleeved on the outside of the second pipe body.

[0007] In one optional embodiment, the pipe cleaning device further includes a drive component and a connecting assembly. The connecting assembly is disposed on the drive component, and the first pipe body and the second pipe body are connected to the connecting assembly. The drive component is disposed on the base and is used to drive the connecting assembly to rotate.

[0008] In one optional embodiment, the connection component includes a liquid supply section, which includes a first interface and a second interface. The first interface is connected to a first tube body and is also connected to an external liquid supply device; the second interface is connected to the second tube body and is also connected to an external liquid supply device.

[0009] In one optional embodiment, the connecting assembly further includes a connecting part connected to the liquid supply part, and the liquid supply part is rotatable relative to the connecting part, and the cleaning head assembly, the first tube body, and the second tube body rotate synchronously with the liquid supply part.

[0010] In one optional embodiment, the rinsing section further includes a transition end, with the first drain end and the second drain end being axially spaced apart, the transition end connecting the first drain end and the second drain end, and the transition end communicating with the first pipe body and the first drain end.

[0011] In one optional embodiment, the pipe cleaning device further includes an isolation ring, which is interference-fitted into the second pipe body. The first pipe body passes through the isolation ring, and the isolation ring has multiple through holes. Fluid in the second pipe body flows to the second drain end through the multiple through holes. The first pipe body, the transition end, and the first drain end are connected to form a first flow channel, and the second pipe body, the isolation ring, and the second drain end are connected to form a second flow channel.

[0012] In a second aspect, the present invention also provides a pipe cleaning system, including a frame and a pipe cleaning device of the first aspect; the frame can be used to install the pipe to be cleaned, the base is movably disposed on the frame, and the cleaning head assembly can move with the base and can enter or exit the interior of the pipe to be cleaned.

[0013] In one alternative embodiment, the frame further includes a mounting bracket assembly, which includes at least a first mounting bracket and a second mounting bracket. The first mounting bracket is located at one end of the pipe to be cleaned near the pipe cleaning device, and the second mounting bracket is located at the other end of the pipe to be cleaned. The height of the first mounting bracket is less than that of the second mounting bracket.

[0014] In one alternative embodiment, the pipe cleaning system further includes a support portion, which is disposed on the frame and spaced apart from the base. The support portion abuts against the pipe cleaning device, and the height of the support portion is greater than that of the base.

[0015] The technical solution proposed in this application has at least the following technical effects: This solution integrates the rinsing and scrubbing sections into a single cleaning head assembly, which is then rotated and mounted on a base. This allows for simultaneous rinsing and scrubbing operations, eliminating the need for separate steps or tool changes, effectively simplifying the cleaning process and improving efficiency. The rinsing section features a first drain end that sprays a high-pressure fluid onto the inner wall of the pipe. Due to the high fluid pressure, this fluid creates a powerful impact on the pipe's inner wall, effectively removing stubborn stains, oil, or scale, significantly enhancing the cleaning ability for heavily soiled pipes. The scrubbing section has a second drain end and a brush body positioned around the second drain end, with the fluid pressure at the second drain end being lower than that at the first drain end. As the cleaning head assembly rotates, the brush body scrapes the inner wall of the pipe, further removing any remaining dirt loosened by the high-pressure impact. Meanwhile, the lower-pressure fluid ejected from the second drain end can wet the brush body at a larger flow rate and continuously flush the impurities scraped off by the brush body to the outside of the pipe, preventing dirt from being deposited again inside the pipe.

[0016] Furthermore, the rinsing and scrubbing sections share the same rotating cleaning head assembly, resulting in a more compact structure and a smaller overall footprint. The high-pressure impact of the rinsing section, the mechanical scraping of the scrubbing section, and the low-pressure, high-flow rinsing work together to achieve a one-time, highly efficient cleaning of the pipe's inner wall, significantly improving operational efficiency while ensuring thorough cleaning.

[0017] Understandably, this solution, through the integrated design of the rinsing section and the differentiated pressure configuration, resolves the technical contradiction between the existing pipe cleaning devices' inability to efficiently remove stubborn stains and quickly discharge sewage. It offers the advantages of good cleaning effect, high operating efficiency, and compact structure. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of a pipe cleaning system according to an embodiment of the present invention; Figure 2 This is a structural diagram of a pipe cleaning device according to an embodiment of the present invention; Figure 3 This is a structural diagram of the drive component and connecting assembly of a pipe cleaning device according to an embodiment of the present invention; Figure 4 This is a structural diagram of a cleaning head assembly of a pipe cleaning device according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Base; 2. Cleaning head assembly; 20. Rinsing section; 201. First drain end; 202. Transition end; 21. Brushing section; 211. Second drain end; 212. Brush body; 3. First tube body; 4. Second tube body; 5. Drive component; 6. Connecting assembly; 60. Liquid supply section; 601. First interface; 602. Second interface; 61. Connecting part; 7. Isolation ring; 8. Frame; 80. Fixing seat assembly; 801. First fixing seat; 802. Second fixing seat; 81. Support part; 9. Tube to be cleaned. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.

[0023] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.

[0024] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0025] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.

[0026] It should be noted that during the production process of steel pipes, various stains and steel slag will inevitably remain on the inner wall. These impurities are generated throughout multiple stages from smelting to forming and have complex origins.

[0027] Specifically, during the smelting and continuous casting stages, various non-metallic inclusions are introduced into the molten steel. On one hand, during smelting and casting, refractory materials such as furnace linings are eroded and may flake off into the molten steel; slag may also mix into the molten steel during tapping; and secondary oxidation occurs when the molten steel comes into contact with air during transportation and casting, generating new oxide inclusions. In continuous casting production, poor protective casting can lead to the formation and detachment of newly formed alumina at the nozzle, contaminating the molten steel; when slag entrapment occurs in the tundish lining, the protective slag is drawn into the steel, and these inclusions subsequently remain in the billet. Furthermore, the oxidation products (such as Al2O3 and SiO2) of deoxidizers added to remove oxygen from the molten steel, if not removed in time, can also form endogenous inclusions remaining in the steel.

[0028] Specifically, these internal defects are further induced and aggravated in subsequent hot working (such as piercing and rolling) and cold working processes. Pre-existing defects in continuously cast billets, such as center cracks, shrinkage cavities, and porosity, will appear on the inner wall of the steel pipe after rolling deformation. Simultaneously, minor defects generated during piercing and continuous rolling, as well as oxide residues on the inner surface, will form internal slipways and scale defects under the rolling extrusion and stretching effects. During hot rolling, the inner wall of the steel pipe will form a dense layer of iron oxide scale due to contact with the high-temperature environment. For cold drawing processes, if the lubrication treatment such as phosphating-saponification before deformation is of poor quality, it may not only cause damage to the inner wall, but residual lubricant or phosphates will also become contaminants on the inner wall. For welded pipes, weld slag will remain on the inner wall during welding, and metal spatter generated during cutting will also contaminate the inner surface of the steel pipe.

[0029] It should be noted that, on the one hand, oil stains adhere to the inner wall of pipes in various forms and with great strength. Before cold drawing or cold rolling, pipes typically undergo lubrication treatments such as phosphating and saponification on both the inner and outer walls. Residual lubricant can carbonize or polymerize during subsequent high-temperature heat treatment, forming a carbonaceous residue that is tightly bonded to the metal substrate. Furthermore, rust-preventive oils used after straightening and flaw detection can oxidize and deteriorate if exposed to air for extended periods, forming a viscous, gel-like substance or even a paint-like film. These oil stains are not simply surface oil; they partially penetrate the microscopic irregularities and grain boundaries of the inner wall, bonding with the metal surface through intermolecular forces and even chemical bonds. It is difficult to overcome their adhesion by simply flushing with low-pressure water or using simple physical scraping.

[0030] On the other hand, traditional cleaning solutions have technological limitations. Existing cleaning devices typically use a single-pressure water flow with ordinary cleaning brushes. The low-pressure water flow can only wash away surface dust and loose particles, lacking the energy to remove stubborn oil films. Furthermore, relying solely on mechanical brushing results in sliding friction between the brush bristles and the pipe wall, making it difficult to effectively remove oil. As the bristles wear down, the cleaning power rapidly decreases, not only failing to thoroughly remove oil but potentially pressing and spreading it onto the pipe wall surface, forming a more uniform and difficult-to-remove oil film. Therefore, due to the unique adhesion mechanism and physicochemical properties of oil, traditional methods struggle to achieve efficient and thorough removal.

[0031] In actual production, traditional cleaning methods often require repeated cleaning of a single pipe due to poor cleaning results, which significantly extends the cleaning time for a single pipe. Especially when dealing with pipes with stubborn oil stains, scale, or mixed complex dirt on the inner wall, a single cleaning is insufficient to meet the process requirements, and the same cleaning process must be repeated multiple times, which multiplies the processing time for a single pipe.

[0032] Understandably, this inefficient cleaning method not only severely reduces the output of a single machine but also makes the cleaning process a bottleneck in the entire pipe production line. On the one hand, the low cleaning efficiency leads to a large backlog of work-in-process at the cleaning station, forcing preceding processes such as rolling and cold drawing to slow down or stop, disrupting the rhythm of the entire production line. On the other hand, to meet the stringent requirements for internal wall cleanliness in subsequent surface treatments (such as passivation and coating), each pipe must be thoroughly cleaned to meet the standards. If the pipe is not thoroughly cleaned before proceeding to the next process, the entire batch of products will be scrapped or reworked, further reducing overall production efficiency. Therefore, the inefficiency of the cleaning process has become one of the core bottlenecks restricting the speed and efficiency of pipe production lines, urgently requiring a cleaning device that can efficiently clean the inner wall of pipes in one pass.

[0033] The embodiments of this application are described below with reference to the accompanying drawings. It can be understood that the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.

[0034] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0035] According to an embodiment of the present invention, in a first aspect, referring to Figures 1 to 4 A pipe cleaning device is provided, including a base 1 and a cleaning head assembly 2. The cleaning head assembly 2 includes a rinsing section 20 and a brushing section 21, which are rotatably mounted on the base 1. The rinsing section 20 includes a first drain end 201, and the brushing section 21 includes a second drain end 211 and a brush body 212. The brush body 212 is disposed on the circumferential surface of the second drain end 211, and the fluid pressure of the second drain end 211 is less than the fluid pressure of the first drain end 201.

[0036] Specifically, the base 1 provides overall support, and the cleaning head assembly 2 extends into the pipe to perform cleaning operations. The cleaning head assembly 2 includes a rinsing section 20 and a brushing section 21. The rinsing section 20 sprays high-pressure fluid onto the inner wall of the pipe to impact and remove stubborn deposits, while the brushing section 21 mechanically scrubs the inner wall and promptly removes the flushed impurities. Both the rinsing section 20 and the brushing section 21 are rotatably mounted on the base 1 and can rotate with the cleaning head assembly 2 as a whole to achieve circumferential full-coverage cleaning of the inner wall of the pipe, avoiding cleaning dead zones.

[0037] Furthermore, the rinsing section 20 includes a first drain end 201, through which high-pressure fluid is sprayed towards the inner wall of the pipe, creating a powerful impact on stubborn oil stains, scale, steel slag, and other impurities adhering to the inner wall, causing them to break and peel off. The brushing section 21 includes a second drain end 211 and a brush body 212. The brush body 212 is disposed on the circumferential surface of the second drain end 211 and is used to scrape and clean the inner wall of the pipe during rotation. The second drain end 211 is used to spray low-pressure fluid onto the inner wall of the pipe, with a fluid pressure lower than that of the first drain end 201. After being sprayed from the second drain end 211, the low-pressure fluid first flows through the area of ​​the brush body 212, wetting the brush body 212 and washing away the impurities adhering to it before reaching the inner wall of the pipe. This flow path not only prevents excessive wear of the brush body 212 due to dry brushing, but also promptly flushes away impurities scraped off the pipe wall by the brush body 212, preventing impurities from accumulating at the root of the brush body 212. Simultaneously, the low-pressure fluid continuously flushes the inner wall of the pipe at a high flow rate, continuously carrying away impurities and residual dirt scraped off by the brush body 212, preventing secondary adhesion.

[0038] Furthermore, the low-pressure fluid continuously flushes the inner wall of the pipe at a high flow rate, effectively carrying away impurities scraped off by the brush 212 and preventing secondary adhesion. During operation, the cleaning head assembly 2 is inserted into the pipe 9 to be cleaned. The first drain end 201 of the flushing section 20 continuously sprays high-pressure fluid to impact and peel off stubborn stains from the inner wall of the pipe. Simultaneously or subsequently, the brushing section 21 rotates, and the brush 212 rotates and scrapes the inner wall of the pipe, further removing the peeled-off dirt. The second drain end 211 simultaneously sprays low-pressure, high-flow-rate fluid during the brushing process, continuously flushing away the impurities and residual dirt scraped off by the brush 212 towards the outside of the pipe. The flushing section 20, the brushing section 21, and the second drain end 211 work together to achieve a one-time, highly efficient cleaning of the inner wall of the pipe.

[0039] Understandably, both the first and second drain ends employ a reasonable distribution of drain holes to optimize the cleaning effect. The first drain end has multiple first drain holes circumferentially distributed, forming a complete jet ring covering the inner wall of the pipe during high-pressure fluid injection. This ensures comprehensive impact of the high-pressure fluid on the inner wall and prevents uneven jet distribution from causing localized contaminants to escape high-pressure impact. Similarly, the second drain end also has multiple second drain holes circumferentially distributed, allowing the low-pressure, high-flow-rate fluid to evenly flush the inner wall of the pipe and the brush body from all circumferential directions during the washing process, ensuring that every part of the inner wall of the pipe is wetted and flushed by the low-pressure fluid. By setting multiple drainage holes circumferentially at the first and second drainage ends, both high-pressure and low-pressure fluids can act on the inner wall of the pipe from all circumferential directions simultaneously, making the fluid coverage more comprehensive and uniform. This effectively avoids cleaning dead zones caused by single or few holes spraying, further improving the uniformity and cleaning effect of the cleaning.

[0040] In another embodiment, the rinsing section 20 and the brushing section 21 may be provided with independent drive mechanisms to adjust their respective rotation speeds according to different working conditions.

[0041] Optionally, the brush body 212 may include, but is not limited to, any one or a combination of bristles, abrasive blades or elastic scrapers, which may be selected according to the inner wall material and type of dirt of the pipe 9 to be cleaned.

[0042] Specifically, both high-pressure and low-pressure fluids can be water or an aqueous solution containing cleaning agents, and the pressure of both can be adjusted adaptively according to the actual degree of fouling on the inner wall of the pipe.

[0043] In one embodiment, refer to Figures 1 to 4The pipe cleaning device includes a first pipe body 3 and a second pipe body 4. The first pipe body 3 is connected to the first drain end 201, and the second pipe body 4 is connected to the second drain end 211. The first pipe body 3 and the second pipe body 4 are coaxially arranged. The first pipe body 3 passes through the inside of the second pipe body 4, or the first pipe body 3 is sleeved on the outside of the second pipe body 4.

[0044] In this embodiment, the pipe cleaning device further includes a first pipe body 3 and a second pipe body 4. The first pipe body 3 is connected to the first drain end 201 of the rinsing section 20 and is used to deliver high-pressure fluid to the first drain end 201; the second pipe body 4 is connected to the second drain end 211 of the brushing section 21 and is used to deliver low-pressure fluid to the second drain end 211. The first pipe body 3 and the second pipe body 4 are coaxially arranged, and the first pipe body 3 passes through the interior of the second pipe body 4. Through this coaxial nested pipe arrangement, the high-pressure flow path and the low-pressure flow path form independent parallel channels in space, and the two fluids do not interfere with each other or cross-flow during the transportation process. The arrangement of the first pipe body 3 passing through the interior of the second pipe body 4 makes the overall pipeline structure more compact, which can effectively reduce the radial dimension required for the cleaning head assembly 2 to extend into the pipe, making it easier for the cleaning device to be applied to pipes of different diameters.

[0045] Furthermore, the first pipe body 3 and the second pipe body 4 are fitted with a clearance fit, and a support is provided between the first pipe body 3 and the second pipe body 4 as needed to ensure their coaxiality in the axial direction and prevent the stability of fluid transport from being affected by pipe shaking.

[0046] In another embodiment, the first tube 3 can also be sleeved outside the second tube 4, similarly achieving a coaxial independent layout of the high-pressure flow path and the low-pressure flow path. The relative positions of the first tube 3 and the second tube 4 can be selected according to the specific structural layout of the cleaning head assembly 2 and the inner diameter of the tube, so as to balance the compactness of the structure and the independence of the flow path. Regardless of whether the first tube 3 is inserted inside the second tube 4 or sleeved outside it, the high-pressure fluid and the low-pressure fluid can be delivered to the rinsing section 20 and the brushing section 21 through their respective independent tubes, ensuring a stable supply of the two fluids even under conditions with large pressure differences, and realizing the coordinated operation of high-pressure rinsing and low-pressure rinsing.

[0047] In one embodiment, refer to Figure 3 The pipe cleaning device also includes a drive component 5 and a connecting component 6. The connecting component 6 is disposed on the drive component 5. The first pipe body 3 and the second pipe body 4 are connected to the connecting component 6. The drive component 5 is disposed on the base 1 and is used to drive the connecting component 6 to rotate.

[0048] In this embodiment, the pipe cleaning device further includes a drive component 5 and a connecting assembly 6. The drive component 5 is disposed on the base 1 and is used to provide driving force for the rotation of the cleaning head assembly 2. The connecting assembly 6 is disposed on the drive component 5 and moves with the output end of the drive component 5. The first pipe body 3 and the second pipe body 4 are both connected to the connecting assembly 6. The drive component 5 drives the connecting assembly 6 to rotate, thereby driving the first pipe body 3, the second pipe body 4, and the cleaning head assembly 2 connected to the connecting assembly 6 to rotate as a whole.

[0049] Furthermore, through the above-mentioned configuration, the rotational power output by the drive component 5 is transmitted to the cleaning head assembly 2 via the connecting assembly 6, enabling the rinsing section 20 and the brushing section 21 to achieve circumferential rotational cleaning inside the pipe, thereby providing comprehensive coverage of the inner wall of the pipe and avoiding cleaning dead zones. Simultaneously, since both the first pipe body 3 and the second pipe body 4 are connected to the connecting assembly 6, the connecting assembly 6, while transmitting rotational motion, must also ensure that the high-pressure fluid and low-pressure fluid inside the first pipe body 3 and the second pipe body 4 can be continuously and stably supplied to the rinsing section 20 and the brushing section 21 during rotation, ensuring uninterrupted cleaning operations.

[0050] Optionally, the driving component 5 is a motor. The motor is fixedly mounted on the base 1, and the motor's output shaft is connected to the rotary joint via a coupling, gear transmission pair, or synchronous belt transmission pair to transmit the motor's rotational power to the rotary joint, thereby driving the cleaning head assembly 2, the first tube 3, and the second tube 4 to rotate synchronously. The motor can be any one of a servo motor, a stepper motor, or a common AC asynchronous motor.

[0051] In one embodiment, refer to Figure 3 The connecting component 6 includes a liquid supply section 60, which includes a first interface 601 and a second interface 602. The first interface 601 is connected to the first tube 3 and to an external liquid supply device; the second interface 602 is connected to the second tube 4 and to an external liquid supply device.

[0052] In this embodiment, the connecting component 6 includes a liquid supply section 60, which enables fluid communication between the external liquid supply device and the first pipe body 3 and the second pipe body 4. The liquid supply section 60 is provided with a first interface 601 and a second interface 602. One end of the first interface 601 is connected to the first pipe body 3, and the other end is connected to the external liquid supply device, for introducing high-pressure fluid provided by the external liquid supply device into the first pipe body 3 and delivering it to the first drain end 201 of the rinsing section 20. One end of the second interface 602 is connected to the second pipe body 4, and the other end is connected to the external liquid supply device, for introducing low-pressure fluid provided by the external liquid supply device into the second pipe body 4 and delivering it to the second drain end 211 of the scrubbing section 21. With the independent configuration of the first interface 601 and the second interface 602, the high-pressure fluid and low-pressure fluid supplied by the external liquid supply device enter the corresponding pipe body through their respective interfaces. The two fluids are isolated from each other inside the connecting component 6, which avoids cross-flow or pressure interference between the high-pressure fluid and the low-pressure fluid during the connection stage, and ensures the independence and stability of the fluid pressure required by the flushing section 20 and the brushing section 21.

[0053] In one embodiment, refer to Figure 3 The connecting component 6 also includes a connecting part 61, which is connected to the liquid supply part 60, and the liquid supply part 60 can rotate relative to the connecting part 61. The cleaning head assembly 2, the first tube 3 and the second tube 4 rotate synchronously with the liquid supply part 60.

[0054] Specifically, the connecting part 61, as the relatively stationary part of the connecting assembly 6, is fixedly connected to the external liquid supply device; the liquid supply part 60, as the rotating part of the connecting assembly 6, is connected to the cleaning head assembly 2, the first tube 3, and the second tube 4. When the driving member 5 drives the connecting part 61 to rotate, the liquid supply part 60 rotates synchronously with the connecting part 61, thereby driving the first tube 3, the second tube 4, and the cleaning head assembly 2 connected to the liquid supply part 60 to rotate synchronously as a whole. At the same time, the rotational engagement of the liquid supply part 60 with the connecting part 61 ensures that the first interface 601 and the second interface 602 of the liquid supply part 60 can still maintain stable fluid communication with the external liquid supply device during the rotation of the cleaning head assembly 2, without the external liquid supply device needing to rotate with the connecting assembly 6. With the above configuration, the rotational power output by the drive unit 5 is transmitted to the liquid supply unit 60 via the connection part 61, thereby driving the cleaning head assembly 2 to rotate. The first interface 601 and the second interface 602 of the liquid supply unit 60 continuously receive high-pressure fluid and low-pressure fluid supplied by the external liquid supply device in the rotating state, and are transported to the rinsing unit 20 and the brushing unit 21 via the first pipe body 3 and the second pipe body 4 respectively, realizing the coordinated operation of rotational cleaning and dual independent liquid supply.

[0055] In one embodiment, refer to Figure 3The rinsing section 20 also includes a transition end 202. The first drain end 201 and the second drain end 211 are arranged axially at intervals. The transition end 202 connects the first drain end 201 and the second drain end 211. The transition end 202 connects the first tube body 3 and the first drain end 201.

[0056] In this embodiment, the rinsing section 20 further includes a transition end 202. The first drain end 201 and the second drain end 211 are spaced apart along the axial direction of the cleaning head assembly 2, meaning the first drain end 201 of the rinsing section 20 and the second drain end 211 of the brushing section 21 are arranged axially in a front-to-back manner, with a certain distance between them. The transition end 202 connects the first drain end 201 and the second drain end 211, structurally connecting the rinsing section 20 and the brushing section 21 into a single unit. Simultaneously, the transition end 202 also connects the first pipe body 3 and the first drain end 201. The high-pressure fluid inside the first pipe body 3 is transported to the first drain end 201 via the transition end 202 and sprayed from the first drain end 201 towards the inner wall of the pipe.

[0057] Understandably, with the transition end 202 in place, the first pipe body 3 only needs to connect to the second drain end 211, and then connect to the first drain end 201 via the transition end 202. This arrangement eliminates the need for direct extension to the location of the first drain end 201; instead, the flow path is transferred through the second drain end 201 and the transition end 202, simplifying the arrangement of the first pipe body 3 and reducing processing and assembly difficulties. Simultaneously, the first drain end 201 and the second drain end 211 are axially spaced, ensuring that the injection positions of the high-pressure fluid and the low-pressure fluid are staggered axially. The high-pressure injection area and the low-pressure flushing area do not overlap, avoiding interference from the high-pressure fluid on the low-pressure fluid discharge path and guaranteeing the "impact peeling first, then brushing and draining" process sequence during cleaning.

[0058] In one embodiment, refer to Figure 4 The pipe cleaning device also includes an isolation ring 7, which is interference-fitted into the second pipe body 4. The first pipe body 3 passes through the isolation ring 7. The isolation ring 7 has multiple through holes, and the fluid in the second pipe body 4 flows to the second drain end 211 through the multiple through holes. The first pipe body 3, the transition end 202 and the first drain end 201 are connected to form a first flow channel, and the second pipe body 4, the isolation ring 7 and the second drain end 211 are connected to form a second flow channel.

[0059] In this embodiment, the pipe cleaning device further includes an isolation ring 7. The isolation ring 7 is interference-fitted into the interior of the second pipe body 4 to form a reliable seal within the second pipe body 4. The first pipe body 3 passes through the isolation ring 7, and the isolation ring 7 is sleeved on the outer periphery of the first pipe body 3, providing support and positioning for the first pipe body 3 and ensuring the coaxiality between the first pipe body 3 and the second pipe body 4. The isolation ring 7 has multiple through holes extending circumferentially or axially, allowing fluid in the second pipe body 4 to flow to the second drain end 211 through the multiple through holes on the isolation ring 7.

[0060] Specifically, the first pipe body 3, transition end 202, and first drain end 201 are sequentially connected to form a first flow channel. High-pressure fluid flows into the transition end 202 through the first pipe body 3, and is then transported from the transition end 202 to the first drain end 201, finally being sprayed towards the inner wall of the pipe from the first drain end 201. The second pipe body 4, isolation ring 7, and second drain end 211 are connected to form a second flow channel. Low-pressure fluid is directly transported to the second drain end 211 through the second pipe body 4 and is sprayed out from the second drain end 211. Through the above arrangement, the first flow channel and the second flow channel are spatially independent and do not interfere with each other. High-pressure fluid and low-pressure fluid are transported to their respective drain ends along their respective flow channels. The isolation ring 7 not only achieves a sealed isolation between the first pipe body 3 and the second pipe body 4, preventing cross-flow between high-pressure fluid and low-pressure fluid inside the first pipe body 3, but also ensures that the fluid located on both sides of the isolation ring 7 inside the first pipe body 3 can communicate, ensuring the normal transport of high-pressure fluid. The independent configuration of the first and second flow channels ensures that the high-pressure fluid and the low-pressure fluid maintain stable pressure during the transportation process, avoiding mutual interference caused by the pressure difference between the two fluids and guaranteeing the working performance of the rinsing section 20 and the brushing section 21.

[0061] According to an embodiment of the present invention, in a second aspect, referring to Figures 1 to 4 The system also provides a pipe cleaning system, including a frame 8 and a pipe cleaning device of the first aspect; the frame 8 can be used to install the pipe 9 to be cleaned, the base 1 is movably disposed on the frame 8, and the cleaning head assembly 2 can move with the base 1 and can enter or exit the interior of the pipe 9 to be cleaned.

[0062] In this embodiment, a pipe cleaning system is provided, including a frame 8 and a pipe cleaning device of the first aspect. The frame 8 is used to install the pipe 9 to be cleaned, providing support and positioning for the pipe 9. The base 1 of the pipe cleaning device is movably disposed on the frame 8, and the base 1 can slide back and forth along the axial direction of the pipe 9 to be cleaned, thereby driving the cleaning head assembly 2 to move together with the base 1. The cleaning head assembly 2 can extend into the interior of the pipe 9 to be cleaned as the base 1 moves, and exit into the interior of the pipe 9 to be cleaned as the base 1 retracts after cleaning is completed. Through the relative sliding between the base 1 and the frame 8, the cleaning head assembly 2 can smoothly enter and exit the inner cavity of the pipe, realizing automated cleaning of the inner wall of the pipe without the need for manual pushing of the cleaning head assembly 2, reducing the difficulty of operation and labor intensity. At the same time, the movable setting of the base 1 allows the cleaning head assembly 2 to clean pipes of different lengths, making it more adaptable.

[0063] In one embodiment, refer to Figure 1 The frame 8 also includes a fixing seat assembly 80, which includes at least a first fixing seat 801 and a second fixing seat 802. The first fixing seat 801 is located at one end of the pipe to be cleaned 9 near the pipe cleaning device, and the second fixing seat 802 is located at the other end of the pipe to be cleaned 9. The height of the first fixing seat 801 is less than that of the second fixing seat 802.

[0064] In this embodiment, the frame 8 further includes a fixing seat assembly 80, which provides support and fixation for the pipe 9 to be cleaned. The fixing seat assembly 80 includes at least a first fixing seat 801 and a second fixing seat 802. The first fixing seat 801 is disposed at one end of the pipe 9 to be cleaned near the pipe cleaning device, and the second fixing seat 802 is disposed at the other end of the pipe 9 to be cleaned. The height of the first fixing seat 801 is less than the height of the second fixing seat 802, that is, the supporting surface of the first fixing seat 801 is lower than the supporting surface of the second fixing seat 802, so that the pipe 9 to be cleaned is tilted after being installed on the frame 8, and the end of the pipe 9 to be cleaned near the pipe cleaning device is lower than the other end away from the pipe cleaning device. Through the above-mentioned tilting arrangement, the sewage generated during the cleaning process, the stripped impurities, and the residue flushed off can automatically collect towards the end near the pipe cleaning device under the action of gravity and be smoothly discharged from the pipe port, avoiding the accumulation or retention of dirt at the lowest point inside the pipe. Meanwhile, the inclined arrangement facilitates the smooth removal of impurities from the pipe by the low-pressure, high-flow-rate fluid during the flushing process, further improving the sewage discharge efficiency, reducing the amount of residual liquid on the inner wall of the pipe after cleaning, and helping to shorten the time of subsequent drying or purging processes.

[0065] In one embodiment, refer to Figure 1The pipe cleaning system also includes a support part 81, which is located on the frame 8 and spaced apart from the base 1. The support part 81 abuts against the pipe cleaning device, and the height of the support part 81 is greater than that of the base 1.

[0066] In this embodiment, the pipe cleaning system further includes a support part 81. The support part 81 is disposed on the frame 8 and spaced apart from the base 1. The support part 81 abuts against the pipe cleaning device and provides auxiliary support for the pipe cleaning device. The height of the support part 81 is greater than the height of the base 1, that is, the support surface of the support part 81 is higher than the mounting surface of the base 1, so that the cleaning head assembly 2 can easily extend into or retract from the pipe.

[0067] Specifically, when the cleaning head assembly 2 extends into the pipe 9 to be cleaned, the overhanging portion of the cleaning head assembly 2 may sag due to its own weight. The support part 81 provides upward support to the cleaning head assembly 2 by abutting against the pipe cleaning device, counteracting the effect of gravity. This ensures that the cleaning head assembly 2 remains coaxial with the inner wall of the pipe after it extends into the pipe, avoiding problems such as uneven contact between the brush body 212 and the inner wall of the pipe, excessive local pressure, or incomplete cleaning caused by the sag of the cleaning head assembly 2. At the same time, the spacing between the support part 81 and the base 1 allows them to bear loads independently without interfering with each other. The base 1 is only responsible for driving the cleaning head assembly 2 to move axially, while the support part 81 is responsible for providing auxiliary support after the cleaning head assembly 2 extends into the pipe. The division of labor is clear, and the structure has good stability. The height of the support part 81 can be adaptively adjusted according to the pipe diameter of the pipe 9 to be cleaned and the overhanging length of the cleaning head assembly 2 to meet the cleaning needs of pipes of different specifications.

[0068] Furthermore, since the cleaning head assembly 2, the first pipe body 3, and the second pipe body 4 of the pipe cleaning device need to rotate synchronously with the connecting assembly 6 during operation, the support part 81 and the pipe cleaning device have a rotational fit relationship.

[0069] Specifically, the support part 81 can be configured as a rolling support structure, including a bracket and rollers or bearings mounted on the bracket. The outer wall of the pipe cleaning device abuts against the rollers or bearings, allowing the pipe cleaning device to rotate smoothly relative to the support part 81 during rotation. The support part 81 provides radial support force without interfering with the normal rotational movement of the pipe cleaning device. Alternatively, the support part 81 can be configured as a sliding support structure, including a bracket and a wear-resistant bushing mounted on the bracket. The outer wall of the pipe cleaning device passes through the wear-resistant bushing, providing rotational support while ensuring free rotation of the pipe cleaning device in the circumferential direction.

[0070] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pipe cleaning device, characterized in that, include: Base (1); The cleaning head assembly (2) includes a rinsing section (20) and a brushing section (21). The rinsing section (20) and the brushing section (21) are rotatably mounted on the base (1). The rinsing section (20) includes a first drain end (201). The brushing section (21) includes a second drain end (211) and a brush body (212). The brush body (212) is disposed on the circumferential surface of the second drain end (211). The fluid pressure of the second drain end (211) is less than the fluid pressure of the first drain end (201).

2. The pipe cleaning device according to claim 1, characterized in that, The pipe cleaning device includes a first pipe body (3) and a second pipe body (4), the first pipe body (3) being connected to the first drain end (201), and the second pipe body (4) being connected to the second drain end (211); The first tube (3) and the second tube (4) are coaxially arranged. The first tube (3) passes through the inside of the second tube (4), or the first tube (3) is sleeved on the outside of the second tube (4).

3. The pipe cleaning device according to claim 2, characterized in that, The pipe cleaning device further includes a drive component (5) and a connecting component (6). The connecting component (6) is disposed on the drive component (5). The first pipe body (3) and the second pipe body (4) are connected to the connecting component (6). The drive component (5) is disposed on the base (1) and is used to drive the connecting component (6) to rotate.

4. The pipe cleaning device according to claim 3, characterized in that, The connecting component (6) includes a liquid supply section (60), which includes a first interface (601) and a second interface (602). The first interface (601) is connected to the first tube body (3) and is connected to an external liquid supply device; the second interface (602) is connected to the second tube body (4) and is connected to an external liquid supply device.

5. The pipe cleaning device according to claim 4, characterized in that, The connecting assembly (6) further includes a connecting part (61), which is connected to the liquid supply part (60), and the liquid supply part (60) can rotate relative to the connecting part (61). The cleaning head assembly (2), the first tube body (3) and the second tube body (4) rotate synchronously with the liquid supply part (60).

6. The pipe cleaning device according to claim 2, characterized in that, The flushing section (20) further includes a transition end (202), the first drain end (201) and the second drain end (211) are spaced apart along the axial direction, the transition end (202) connects the first drain end (201) and the second drain end (211), and the transition end (202) connects the first tube body (3) and the first drain end (201).

7. The pipe cleaning device according to claim 6, characterized in that, The pipe cleaning device also includes an isolation ring (7), which is interference-fitted into the second pipe body (4). The first pipe body (3) passes through the isolation ring (7). The isolation ring (7) has multiple through holes, and the fluid in the second pipe body (4) flows to the second drain end (211) through the multiple through holes. The first tube body (3), the transition end (202) and the first drain end (201) are connected to form a first flow channel, and the second tube body (4), the isolation ring (7) and the second drain end (211) are connected to form a second flow channel.

8. A pipe cleaning system, characterized in that, include: Rack (8); Pipe cleaning apparatus as described in any one of claims 1 to 7; The frame (8) can be used to install the pipe (9) to be cleaned. The base (1) is movably mounted on the frame (8). The cleaning head assembly (2) can move with the base (1) and can enter or exit the pipe (9) to be cleaned.

9. The pipe cleaning system according to claim 8, characterized in that, The frame (8) also includes a fixing seat assembly (80), which includes at least a first fixing seat (801) and a second fixing seat (802). The first fixing seat (801) is located at one end of the pipe (9) to be cleaned near the pipe cleaning device, and the second fixing seat (802) is located at the other end of the pipe (9) to be cleaned. The height of the first fixing seat (801) is less than that of the second fixing seat (802).

10. The pipe cleaning system according to claim 8, characterized in that, The pipe cleaning system also includes a support part (81), which is located on the frame (8) and spaced apart from the base (1). The support part (81) abuts against the pipe cleaning device, and the height of the support part (81) is greater than that of the base (1).

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