Pipeline inner wall dredging and cleaning equipment and cleaning method

Abstract

The invention relates to the technical field of pipeline cleaning, in particular to pipeline inner wall dredging and cleaning equipment and cleaning method.The pipeline inner wall dredging and cleaning method comprises the steps that the pipeline inner wall dredging and cleaning equipment is adopted to dredge and clean the pipeline inner wall; the pipeline inner wall dredging and cleaning equipment comprises a main body, a spray head, a first supporting mechanism and a second supporting mechanism, wherein the main body is used for receiving flushing liquid from the outside; the spray head can be rotatably arranged on the main body, the spray head is provided with a plurality of spray holes communicated with the main body, and the plurality of spray holes are distributed in the circumferential direction and are obliquely arranged; the first supporting mechanism and the second supporting mechanism are used for supporting the body and the nozzle in the middle of the pipeline. Therefore, on one hand, the impact force of the flushing liquid sprayed out of the multiple spraying holes on the inner wall of the pipeline is kept consistent, the flushing uniformity is guaranteed, on the other hand, the flushing liquid can flush the pipeline in the circumferential direction under the guidance of the spraying holes, and the cleaning efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning, and in particular to a pipeline inner wall dredging and cleaning device and a cleaning method. Background Art

[0002] Under long-term pipeline operation conditions, impurities contained in the fluid are affected by comprehensive factors such as intermolecular forces and continue to adhere to the inner wall of the pipeline; as time goes by, these attachments continue to accumulate, causing the actual flow cross-sectional area of ​​the pipeline to decrease. The reduction in flow area will significantly increase the longitudinal resistance and local resistance of the fluid flow, thereby reducing transportation efficiency; at the same time, the chemically active substances in the attachments and the metal materials of the inner wall of the pipeline undergo electrochemical reactions and corrosion reactions in a suitable temperature, humidity and medium environment, resulting in the degradation of the performance of the inner wall material of the pipeline and the weakening of the structural strength.

[0003] In order to ensure that the pipeline can operate safely and efficiently, it is necessary to regularly clear and clean the pipeline; during the cleaning process, cleaning equipment is needed. In related technologies, such as Chinese patent CN209736259U, a high-pressure water reverse clearing machine is disclosed. The high-pressure water reverse clearing machine includes a high-pressure water pump and an actuator. The actuator includes a pressure head. When cleaning the pipeline, the actuator is first placed in the pipeline with the pressure head facing forward, and then the high-pressure water pump is started. The high-pressure water pump transports high-pressure water to the actuator and sprays it out. The sprayed water washes the dirt on the inner wall of the pipeline. At the same time, the reaction force generated by the water spray drives the actuator to move forward, thereby realizing automatic and continuous cleaning of the inner wall of the pipeline.

[0004] However, the above-mentioned high-pressure water reverse dredging machine also has some problems during actual use: when the pipeline is laid horizontally, the actuator is affected by gravity, and its center of gravity shifts to the bottom of the pipeline, resulting in a change in the relative position relationship between the actuator and the inner wall of the pipeline; during the high-pressure water jetting process, due to the change in the posture of the actuator, the angle and distance between the direction of the high-pressure water jet and various parts of the inner wall of the pipeline are inconsistent, which leads to significant differences in the impact force of high-pressure water on various parts of the inner wall of the pipeline. The impact force is large at the bottom of the pipeline, and the impact force is small at the top and other parts, which in turn causes uneven flushing effect; in addition, the arrangement and movement mode of the high-pressure water jet port of the actuator determine that it can only flush the inner wall of the pipeline in a straight line along the motion trajectory, and the surface of the inner wall of the pipeline has a circular continuity feature. The flushing area generated by the linear motion of the actuator cannot cover the entire circular inner wall, making it difficult for dirt outside the linear area to be effectively flushed; in order to achieve comprehensive cleaning, the same pipe section needs to be flushed repeatedly, which is not only time-consuming and labor-intensive, but also reduces the overall efficiency of pipeline cleaning. Summary of the Invention

[0005] Based on this, it is necessary to provide a pipeline inner wall dredging and cleaning device and a cleaning method to address the problem of low cleaning efficiency in the current pipeline inner wall cleaning process.

[0006] The above purpose is achieved through the following technical solutions: A device for clearing and cleaning the inner wall of a pipeline, comprising a main body, a nozzle, a first supporting mechanism and a second supporting mechanism; wherein the main body is configured to receive flushing liquid from the outside; The nozzle is arranged on the main body and can rotate around its own axis. The nozzle is provided with a plurality of spray holes, and the plurality of spray holes are all located on the rear side of the nozzle in the direction of travel. The plurality of spray holes are arranged along the circumferential direction, are all inclined, and are all connected to the main body; The first supporting mechanism is configured to support the nozzle in the middle of the pipeline, and to make the axis of the nozzle coincide with the axis of the pipeline; The second supporting mechanism is configured to support the main body in the middle of the pipe.

[0007] Furthermore, the first supporting mechanism includes a rotating sleeve, an equal and multiple number of first supporting rods, a first roller and a first elastic member, the rotating sleeve is sleeved on the nozzle and can rotate around its own axis; the first end of the first supporting rod is hinged on the rotating sleeve, and the second end is arranged close to the inner circumferential wall of the pipe, and multiple first supporting rods are arranged along the circumferential direction; the first roller is rotatably connected to the second end of the first supporting rod, and forms a rolling fit with the inner circumferential wall of the pipe when in use; the first elastic member is connected between the rotating sleeve and the first support rod, and under the action of the first elastic member, the first roller has a tendency to press against the inner circumferential wall of the pipe.

[0008] Furthermore, the pipeline inner wall dredging and cleaning equipment also includes a plurality of scrapers and a plurality of second elastic members, the first end of the scraper is hinged to the second end of the first support rod, and the second end is suspended; the second elastic member is connected between the first support rod and the scraper, and under the action of the second elastic member, the scraper has a tendency to press against the inner wall of the pipeline.

[0009] Furthermore, there is a preset angle between the axis of the first roller and the axis of the nozzle, so that the first roller is tilted.

[0010] Furthermore, the pipeline inner wall dredging and cleaning equipment also includes a plurality of buffer plates, which are arranged on the first support rod, with the plate surface of the buffer plate facing the injection hole, and the buffer plate is configured to change the flushing direction of the flushing liquid.

[0011] Furthermore, the pipeline inner wall dredging and cleaning device also includes a locking mechanism, which is configured to lock the angle between the first support rod and the nozzle when the buffer plate changes the flushing direction of the flushing liquid.

[0012] Furthermore, the locking mechanism includes a plurality of locking components, and the locking components include a third elastic member, a liquid channel, a piston, a locking pin and a plurality of locking grooves. The third elastic member is connected between the buffer plate and the first support rod, and under the action of the third elastic member, the buffer plate has a tendency to move in a direction away from the first support rod; the liquid channel is arranged in the first support rod, and the liquid channel is filled with liquid when in use; the piston is arranged on the buffer plate and is slidably inserted at one end of the liquid channel; the plurality of locking grooves are all arranged on the rotating sleeve and are arranged circumferentially; the locking pin is slidably inserted at the other end of the liquid channel and can form a snap fit with any one of the locking grooves.

[0013] Furthermore, the locking assembly further includes a limiting member, and the limiting member is configured to limit a maximum distance that the buffer plate can move in a direction away from the first support rod.

[0014] Furthermore, the second support mechanism includes an equal number of multiple second support rods, second rollers and a fourth elastic member, the first end of the second support rod is hinged to the main body, the second end is arranged close to the inner circumferential wall of the pipe, and multiple second support rods are arranged along the circumferential direction; the second roller is rotatably connected to the second end of the second support rod, and forms a rolling fit with the inner circumferential wall of the pipe when in use; the fourth elastic member is connected between the main body and the second support rod, and under the action of the fourth elastic member, the second roller has a tendency to press against the inner circumferential wall of the pipe.

[0015] The present invention also provides a method for clearing and cleaning the inner wall of a pipeline, using a device for clearing and cleaning the inner wall of a pipeline. The method for clearing and cleaning the inner wall of a pipeline comprises the following steps: S1. Place the pipe inner wall dredging and cleaning device in the pipe, place the nozzle at the front, support the nozzle in the middle of the pipe by a first supporting mechanism, and support the main body in the middle of the pipe by a second supporting mechanism; S2. A flushing liquid is introduced into the main body. The flushing liquid is sprayed out obliquely under the guidance of the spray hole, driving the spray head to rotate around its own axis while driving the main body to move forward through the spray head.

[0016] The beneficial effects of the present invention are: The present invention relates to a pipeline inner wall dredging and cleaning device and a cleaning method. The pipeline inner wall dredging and cleaning method comprises using the pipeline inner wall dredging and cleaning device to dredge and clean the pipeline inner wall; during use of the pipeline inner wall dredging and cleaning device, firstly, a nozzle and a main body are placed in the pipeline, and the nozzle is placed at the front side, and the nozzle is supported in the middle of the pipeline by a first supporting mechanism, and the axis of the nozzle and the axis of the pipeline are arranged to coincide, and the main body is supported in the middle of the pipeline by a second supporting mechanism; then, a flushing liquid is continuously introduced into the main body, and the flushing liquid is obliquely sprayed out under the guidance of the spray hole. At this time, since the nozzle is located in the middle of the pipeline, the impact force of the flushing liquid sprayed from multiple spray holes on the pipeline inner wall is consistent, thereby ensuring the uniformity of flushing; at the same time, the flushing liquid drives the nozzle to rotate around its own axis while driving the nozzle to move forward, thereby achieving continuous cleaning and flushing the pipeline inner wall along the circumferential direction, which is beneficial to improving the cleaning efficiency.

[0017] Furthermore, by providing a scraper, when the nozzle moves, the scraper can scrape off impurities adhering to the inner wall of the pipe, thereby improving the cleaning effect of the inner wall of the pipe.

[0018] Furthermore, by setting a preset angle between the axis of the first roller and the axis of the nozzle, when the nozzle moves, the first roller can move along a spiral trajectory along the inner wall of the pipe, and then drive the scraper to move circumferentially, so as to scrape off impurities adhering to the inner wall of the pipe along the circumferential direction, which is beneficial to improving the comprehensiveness of cleaning the inner wall of the pipe.

[0019] Furthermore, by setting a buffer plate, during the movement of the nozzle, when the buffer plate and the injection hole are located in the same straight line, the buffer plate can change the flushing direction of the flushing liquid, thereby reducing the recoil force of the flushing liquid on the nozzle, thereby reducing the difficulty of manually operating the pipeline inner wall clearing and cleaning equipment; in addition, when the buffer plate changes the flushing direction of the flushing liquid, the nozzle can be pulled backward manually, and then after the buffer plate and the injection hole are misaligned, the recoil force of the flushing liquid on the nozzle is restored, driving the nozzle to move forward faster, thereby improving the cleaning effect on the inner wall of the pipeline by increasing the impact force of the scraper on impurities next time.

[0020] Furthermore, through the locking mechanism, when the buffer plate changes the flushing direction of the flushing liquid, the locking mechanism can lock the angle between the first support rod and the nozzle, thereby avoiding affecting the scraping effect of the scraper on impurities adhered to the inner wall of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a pipeline inner wall dredging and cleaning device provided by an embodiment of the present invention; Figure 2A schematic front view of the structure of a pipeline inner wall dredging and cleaning device provided by an embodiment of the present invention; Figure 3 A schematic side view of the structure of the pipeline inner wall dredging and cleaning device provided by an embodiment of the present invention when cleaning a pipeline; Figure 4 Schematic diagram of the cross-sectional structure of the pipeline inner wall clearing and cleaning device provided by the embodiment of the present invention when cleaning the pipeline Figure 1 ; Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A; Figure 6 Schematic diagram of the cross-sectional structure of the pipeline inner wall clearing and cleaning device provided by the embodiment of the present invention when cleaning the pipeline Figure 2 ; Figure 7 for Figure 6 Schematic diagram of the locally enlarged structure at point B in the middle.

[0022] in: 1. Main body; 2. Nozzle; 201. Spray hole; 202. Straight punch hole; 3. First supporting mechanism; 301. Rotating sleeve; 302. First supporting rod; 303. First roller; 304. First spring piece; 4. Second supporting mechanism; 401. Second supporting rod; 402. Second roller; 403. Third spring piece; 5. Scraper; 6. Second spring piece; 7. Buffer plate; 801. Locking assembly; 8011. Compression spring; 8012. Liquid channel; 8013. Piston; 8014. Lock pin; 8015. Lock groove; 9. Hose; 10. Connecting sleeve; 11. Limit screw; 12. Pipeline. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0025] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0026] like Figures 1 to 7 As shown, the pipeline inner wall clearing and cleaning equipment provided by an embodiment of the present invention is used for cleaning the inner wall of the pipeline 12, and is configured to include a main body 1, a nozzle 2, a first support mechanism 3 and a second support mechanism 4; wherein, the main body 1 is configured to receive flushing liquid from the outside; the nozzle 2 is arranged on the main body 1 and can rotate around its own axis, and a plurality of spray holes 201 are provided on the nozzle 2, and the plurality of spray holes 201 are all located on the rear side of the nozzle 2 in the direction of travel, and the plurality of spray holes 201 are arranged along the circumferential direction, and are all inclined and connected to the main body 1; the first support mechanism 3 is configured to support the nozzle head 2 in the middle of the pipeline 12, and the axis of the nozzle head 2 and the axis of the pipeline 12 are arranged to coincide; the second support mechanism 4 is configured to support the main body 1 in the middle of the pipeline 12.

[0027] Specifically, in this embodiment, the main body 1 is a tubular structure, and when in use, its axis is aligned with the axis of the pipe 12, supported by the second support mechanism 4. To facilitate the passage of flushing liquid into the interior of the main body 1, the pipe inner wall dredging and cleaning device is configured to further include a liquid supply system and a hose 9. The front end of the hose 9 is connected to the rear end of the main body 1 during installation. The liquid supply system can be configured to include a water pump and a water tank. The water tank stores flushing liquid, the water pump's pumping end is connected to the water tank, and the water pump's pumping end is connected to the rear end of the hose 9. The nozzle 2 has a base pipe section and a spray section, and when in use, the axis of the base pipe section and the axis of the pipeline 12 are arranged to coincide with each other under the support of the first support mechanism 3, the spray section is located on the front side of the base pipe section, and the spray hole 201 is opened on the spray section and is located on the rear side. The spray section has a water inlet and a water outlet, and the water inlet and the water outlet are staggered in the direction parallel to the axis of the base pipe section and in the circumferential direction to ensure that the spray hole 201 is set at an angle, and then when the flushing liquid is sprayed out from the spray hole 201, the flushing liquid can be sprayed obliquely to the rear under the guidance of the spray hole 201 and form a spiral trajectory, and then it can drive the nozzle 2 to rotate around its own axis while driving the nozzle 2 to move along the axis direction of the pipeline 12 under the action of the recoil force.

[0028] To facilitate the connection between the main body 1 and the nozzle 2, the pipeline inner wall dredging and cleaning equipment is configured to also include a first annular groove and a connecting sleeve 10. The first annular groove is simultaneously opened on the front end outer peripheral wall of the main body 1 and the rear end outer peripheral wall of the base pipe section. The cross-sectional shape of the first annular groove is C-shaped; the cross-sectional shape of the connecting sleeve 10 is C-shaped. The connecting sleeve 10 is rotated and inserted into the first annular groove during installation, thereby ensuring that the main body 1 and the nozzle 2 can move synchronously along the axial direction of the pipeline 12, so that the hose 9 can follow the movement synchronously to ensure the stability of the supply of flushing liquid, and can also rotate relative to each other, on the one hand to avoid affecting the movement mode of the nozzle 2 that rotates and moves at the same time, and on the other hand to avoid twisting the hose 9, which causes damage to the structure of the hose 9.

[0029] In order to ensure that the main body 1 can move axially along the pipe 12 under the drive of the flushing liquid sprayed from the nozzle 2, it is set that the pressure of the flushing liquid sprayed from the nozzle 2 is greater than the resistance encountered by the pipe inner wall clearing and cleaning equipment when moving forward, and the resistance at least includes the gravity of the pipe inner wall clearing and cleaning equipment.

[0030] Optionally, in order to improve the convenience of installing the connecting sleeve 10, the connecting sleeve 10 can be configured to be composed of two separate parts, and the two parts can be fixed together by bolts and nuts.

[0031] Alternatively, the flushing liquid may be water, a cleaning liquid, or a mixture of water and a cleaning liquid.

[0032] During use, the nozzle head 2 and the main body 1 are first placed inside the pipe 12, with the nozzle head 2 located at the front side; then the nozzle head 2 is supported in the middle position of the pipe 12 by the first supporting mechanism 3, and it is ensured that the axis of the base pipe section coincides with the axis of the pipe 12; at the same time, the main body 1 is supported in the middle of the pipe 12 by the second supporting mechanism 4, and it is ensured that the axis of the main body 1 coincides with the axis of the pipe 12, so that the entire device is in a balanced and stable working state in the pipe 12.

[0033] The water pump is then started to draw the flushing liquid from the water tank and deliver it to the interior of the main body 1 at a certain pressure through the hose 9, and then to the nozzle 2. When the flushing liquid is ejected from the injection hole 201, it is guided by the injection hole 201 and ejected at high speed in an oblique and rearward direction, forming a spiral trajectory. This spiral water flow not only generates a strong recoil force, driving the nozzle 2 to continuously rotate around its own axis, but also pushes the nozzle 2 forward along the axis of the pipe 12. During this process, on the one hand, thanks to the fact that the nozzle 2 is precisely located in the middle of the pipe 12, the impact force generated by the flushing liquid sprayed from the multiple injection holes 201 when reaching the inner wall of the pipe 12 can always remain consistent. This feature fundamentally overcomes the problem of uneven flushing caused by the position offset of the nozzle 2 in traditional cleaning equipment, and effectively ensures the uniformity of flushing the inner wall of the pipe 12; on the other hand, with the rotation of the nozzle 2, the flushing liquid can be fully and circumferentially flushed to various parts of the inner wall of the pipe 12 without dead angles. Compared with the limitation of traditional cleaning equipment that can only flush multiple straight line areas on the inner wall of the pipe 12, this cleaning method greatly expands the coverage range, which not only significantly improves the cleaning efficiency, but also effectively reduces the time and labor cost required to clean the same pipe section, providing a solid guarantee for the safe and efficient operation of the pipeline 12.

[0034] Furthermore, the first support mechanism 3 is configured to include a rotating sleeve 301, an equal and multiple number of first support rods 302, a first roller 303 and a first elastic member. The rotating sleeve 301 is sleeved on the nozzle 2 and can rotate around its own axis; the first end of the first support rod 302 is hinged on the rotating sleeve 301, and the second end is arranged close to the inner circumferential wall of the pipe 12, and multiple first support rods 302 are arranged along the circumferential direction; the first roller 303 is rotatably connected to the second end of the first support rod 302, and forms a rolling fit with the inner circumferential wall of the pipe 12 when in use; the first elastic member is connected between the rotating sleeve 301 and the first support rod 302, and under the action of the first elastic member, the first roller 303 has a tendency to press against the inner circumferential wall of the pipe 12.

[0035] Specifically in this embodiment, to facilitate installation of the rotating sleeve 301, a second annular groove is provided on the outer circumferential wall of the base pipe section. During installation, the rotating sleeve 301 is rotated and inserted into the second annular groove, ensuring that the rotating sleeve 301 can rotate relative to the nozzle 2. Four first support rods 302 can be provided, and are evenly arranged along the circumference. The first support rods 302 are strip-shaped and arranged coplanar with the axis of the base pipe section, and are generally directed obliquely rearward. During installation, the inner end of the first support rod 302 is hinged to the outer circumferential wall of the rotating sleeve 301, while the outer end is suspended. Four first rollers 303 are provided, and are rotatably mounted on the outer ends of the first support rods 302. The number of first elastic members is set to four accordingly. The first elastic member can be set to a first spring piece 304. The first spring piece 304 is a V-shaped structure. The first spring piece 304 opens toward the rear during installation, and one end is fixed to the outer peripheral wall of the rotating sleeve 301, and the other end is fixed to the rear side wall of the first support rod 302. Under the action of the first spring piece 304, the four first support rods 302 have a tendency to open, thereby driving the first roller 303 to press against the inner wall of the pipe 12. On the one hand, it can adapt to the diameter of the pipe 12 and improve the applicability of the equipment. On the other hand, it can place the nozzle 2 in the middle of the pipe 12 to improve the uniformity during flushing.

[0036] Optionally, to improve the convenience of installing the rotating sleeve 301, the rotating sleeve 301 can be configured to consist of two separate parts, and the two parts can be fixed together by bolts and nuts.

[0037] In a further embodiment, in order to further improve the cleaning effect of the inner wall of the pipe 12, the pipe inner wall dredging and cleaning equipment also includes multiple scrapers 5 and multiple second elastic members. The first end of the scraper 5 is hinged to the second end of the first support rod 302, and the second end is suspended; the second elastic member is connected between the first support rod 302 and the scraper 5. Under the action of the second elastic member, the scraper 5 has a tendency to press against the inner wall of the pipe 12.

[0038] Specifically in this embodiment, when the number of first support rods 302 is set to four, the number of scrapers 5 is correspondingly set to four. When the scraper 5 is installed, the plate surface is along the radial direction of the base pipe section, and the rear end is hinged to the outer end of the first support rod 302, and the front end is suspended. The number of second elastic members is correspondingly set to four. The second elastic member can be set to a second elastic piece 6. The second elastic piece 6 is a V-shaped structure. When installed, the second elastic piece 6 opens to the front, and one end is fixed on the inner side wall of the scraper 5, and the other end is fixed on the front side wall of the first support rod 302. Under the action of the second elastic piece 6, the scraper 5 has a tendency to press against the inner circumferential wall of the pipe 12, so that during the movement of the nozzle 2, the scraper 5 can scrape off impurities adhering to the straight area on the inner circumferential wall of the pipe 12 in real time.

[0039] Furthermore, the rotating sleeve 301 is arranged close to the injection section, such as Figure 4 As shown in the figure, the direction of the arrow is the injection direction of the flushing liquid, so that the scraper 5 is located in front of the flushing point of the flushing liquid on the inner wall of the pipe 12, and then during the movement of the nozzle 2, the scraper 5 can first scrape the impurities adhering to the inner wall of the pipe 12, and then flush the impurities with the flushing liquid. Compared with the method of relying solely on the flushing liquid for cleaning, this collaborative working method of scraping first and then flushing can significantly improve the cleaning efficiency: on the one hand, the scraper 5 breaks the close adhesion between the impurities and the inner wall of the pipe 12 in advance, so that the flushing liquid can act more efficiently On the other hand, for some irregularly shaped and firmly attached impurities, the scraper 5 can penetrate into the gaps and corners to scrape them away, while the flushing liquid can cover the area scraped by the scraper 5 to ensure that no impurities remain. The two work together to greatly improve the cleaning effect of the inner wall of the pipe 12, and can effectively remove all kinds of dirt on the inner wall of the pipe 12, ensure smooth circulation of the pipe 12, reduce the risk of corrosion of the pipe 12 due to dirt accumulation, extend the service life of the pipe 12, and ensure efficient and safe transportation.

[0040] In a further embodiment, in order to further improve the comprehensiveness of cleaning the inner wall of the pipe 12, a preset angle is provided between the axis of the first roller 303 and the axis of the nozzle 2, so that the first roller 303 is tilted.

[0041] Specifically in this embodiment, due to the inclined setting of the first roller 303, during the advancement of the nozzle 2, the rolling path of the first roller 303 is not a simple straight line, but moves in a spiral trajectory along the inner wall of the pipe 12. This spiral movement mode is of great significance because there is a mechanical connection between the first roller 303 and the scraper 5. When the first roller 303 moves along the spiral trajectory, it can transmit this movement to the scraper 5, thereby driving the scraper 5 to move along the spiral trajectory in the pipe 12.

[0042] Driven by the first roller 303, the scraper 5 can break through the limitation of the straight line area and scrape the inner wall of the pipe 12 along the circumferential direction. This means that the impurities in the circumferential direction on the inner wall of the pipe 12 that may have been missed by the traditional straight line scraping method can now be effectively removed. In this way, the scraping range of the scraper 5 is greatly expanded, and the comprehensiveness of the cleaning of the inner wall of the pipe 12 is significantly improved. Whether it is the longitudinal area of ​​the inner wall of the pipe 12 or various parts in the circumferential direction, they can be fully cleaned under the synergistic action of the scraper 5 and the subsequent flushing liquid, thereby being able to comprehensively guarantee the cleanliness of the inner wall of the pipe 12, further reducing the risks of various problems caused by the accumulation of impurities in the pipe 12, and effectively maintaining the efficient and stable operation of the pipe 12.

[0043] In a further embodiment, when the existing high-pressure water reverse cleaning machine is in operation, the strong pressure carried by the high-pressure water when it is sprayed out from the actuator will generate a large reaction force, thereby causing the actuator to move too fast in the pipe 12; the rapid movement of the actuator makes the high-pressure water act on the inner wall of the pipe 12 for too short a time, and the flushing effect cannot be fully exerted, which ultimately makes it difficult to clean the inner wall of the pipe 12 to achieve the ideal level of cleanliness.

[0044] To address this thorny issue, the currently commonly used control method involves manually holding the water supply line of the actuator. However, this manual intervention method has many drawbacks. First, manual operation is highly uncertain. Different operators have different strength, reaction speed, and operating habits, making it difficult to accurately control the movement speed of the actuator every time, thus making it difficult to consistently guarantee cleaning results. Second, manually holding the water supply line for a long time is a highly intensive and labor-intensive task, which not only increases labor costs but also easily leads to operator errors due to fatigue, further affecting the quality and efficiency of the cleaning work.

[0045] In order to improve the above situation, the pipeline inner wall clearing and cleaning device also includes multiple buffer plates 7, which are arranged on the first support rod 302, and the plate surface of the buffer plate 7 is arranged toward the injection hole 201. The buffer plate 7 is configured to change the flushing direction of the flushing liquid.

[0046] Specifically in this embodiment, when there are four first support rods 302, there are four buffer plates 7. When installed, the buffer plates 7 are arranged on the front side wall of the first support rod 302, and the surface of the buffer plates 7 and the surface of the scraper 5 are arranged perpendicularly to ensure that the surface of the buffer plates 7 can face the injection hole 201. In this way, when the buffer plates 7 and the injection hole 201 are located in the same straight line, the buffer plates 7 can change the flushing direction of the flushing liquid, such as Figure 6 As shown in the figure, the arrow is the spray direction of the flushing liquid. After the flushing liquid contacts the buffer plate 7, its original straight high-speed spray direction will change, and the flow direction of part of the flushing liquid will be guided by the buffer plate 7 to a direction parallel to the extension direction of the first support rod 302. In this process, the energy of the flushing liquid will be partially dispersed and consumed. In this way, the recoil force on the nozzle 2 is reduced, thereby effectively reducing the movement speed of the nozzle 2 in the pipe 12, so that the movement speed of the nozzle 2 can be controlled without manual intervention.

[0047] Furthermore, the scraper 5 and the buffer plate 7 are arranged in correspondence. Thus, when the buffer plate 7 and the injection hole 201 are in the same straight line, the buffer plate 7 can guide the flushing liquid to the scraper 5. This guiding effect is crucial for improving the cleaning effect: on the one hand, the flushing liquid guided to the scraper 5 can enhance the scraping effect of the scraper 5 on impurities on the inner wall of the pipe 12. Under the action of the second elastic member, the scraper 5 is already tightly pressed against the inner wall of the pipe 12, scraping off adhered impurities. The addition of the flushing liquid provides additional assistance to the scraper 5, which can promptly flush away the impurities scraped off by the scraper 5, preventing impurities from accumulating around the scraper 5, thereby enabling the scraper 5 to continue to work efficiently. On the other hand, the flushing liquid can also clean the scraper 5 itself during the process of flushing the scraper 5. Long-term scraping operations may cause impurities to adhere to the surface of the scraper 5, affecting its scraping effect. The flushing of the flushing liquid can ensure that the scraper 5 always remains clean and maintains good working performance.

[0048] In addition, the corresponding arrangement of the scraper 5 and the buffer plate 7 also optimizes the utilization efficiency of the flushing liquid. The flushing liquid that may have been dispersed in the pipe 12 can be concentrated on the scraper 5 and the surrounding inner wall area of ​​the pipe 12 through the guidance of the buffer plate 7, so that the flushing liquid can be more fully utilized and the waste of resources can be avoided. Through this collaborative working mechanism, the pipe inner wall dredging and cleaning equipment can more efficiently remove impurities on the inner wall of the pipe 12, further improve the comprehensiveness and thoroughness of cleaning, and effectively ensure the smooth and safe operation of the pipe 12.

[0049] In a further embodiment, to ensure that the scraper 5 can effectively clean the inner wall of the pipe 12, the pipe inner wall unclogging and cleaning device further includes a locking mechanism, which is configured to lock the angle between the first support rod 302 and the nozzle 2 when the buffer plate 7 changes the flushing direction of the flushing liquid. Thus, when the buffer plate 7 changes the flushing direction of the flushing liquid, the locking mechanism can firmly lock the angle between the first support rod 302 and the nozzle 2 at a pre-set angle position that is most conducive to the operation of the scraper 5. This locking ensures that, throughout the entire cleaning process, regardless of how the flushing liquid impacts the buffer plate 7, the scraper 5 can always act on the inner wall of the pipe 12 in a stable and efficient working posture. This not only ensures that the scraper 5 can effectively remove various stubborn impurities on the inner wall of the pipe 12, greatly improving the quality and efficiency of cleaning, but also further enhances the stability and reliability of the operation of the entire pipe inner wall unclogging and cleaning device, providing more solid support for the safe and efficient operation of the pipe 12.

[0050] Furthermore, the locking mechanism is configured to include multiple locking components 801, and the locking component 801 includes a third elastic member, a liquid channel 8012, a piston 8013, a locking pin 8014 and a plurality of locking grooves 8015. The third elastic member is connected between the buffer plate 7 and the first support rod 302. Under the action of the third elastic member, the buffer plate 7 has a tendency to move away from the first support rod 302; the liquid channel 8012 is arranged in the first support rod 302, and the liquid channel 8012 is filled with liquid when in use; the piston 8013 is arranged on the buffer plate 7 and is slidably inserted into one end of the liquid channel 8012; the plurality of locking grooves 8015 are all arranged on the rotating sleeve 301 and are arranged circumferentially; the locking pin 8014 is slidably inserted into the other end of the liquid channel 8012 and can form a snap fit with any lock groove 8015.

[0051] Specifically in this embodiment, the third elastic member is a compression spring 8011, which is vertically connected between the front side wall of the first support rod 302 and the rear surface of the buffer plate 7. Under the action of the compression spring 8011, the buffer plate 7 has a tendency to move obliquely forward in a direction perpendicular to its own surface. The liquid channel 8012 is an L-shaped structure, and the short section vertically passes through the front side wall of the first support rod 302, and the long section coincides with the extension direction of the first support rod 302 and passes inward through the inner end of the first support rod 302. The piston 8013 is vertically arranged on the rear surface of the buffer plate 7 and is sealed and slidably inserted in the short section. A plurality of locking grooves 8015 are arranged circumferentially on the rotating sleeve 301 and are located at the hinge between the first support rod 302 and the rotating sleeve 301. The locking pin 8014 is sealed and slidably inserted in the inner end of the long section.

[0052] During use, when the flushing liquid hits the buffer plate 7, the buffer plate 7 approaches the first support rod 302 in a direction perpendicular to its own plate surface, and synchronously compresses the compression spring 8011; in this process, the buffer plate 7 drives the piston 8013 to insert into the liquid channel 8012, so that the liquid in the liquid channel 8012 has a certain pressure, and then drives the locking pin 8014 to partially pull out of the liquid channel 8012, and engage with one of the locking grooves 8015, thereby locking the angle between the first support rod 302 and the nozzle 2.

[0053] When the flushing liquid passes through the buffer plate 7, the compression spring 8011 resets, and synchronously drives the buffer plate 7 away from the first support rod 302 in a direction perpendicular to its own plate surface; in this process, the buffer plate 7 drives the piston 8013 to reset, so that negative pressure is generated in the liquid channel 8012. Under the action of the pressure difference, the locking pin 8014 is reinserted into the liquid channel 8012 and disengaged from the locking groove 8015, thereby unlocking the angle between the first support rod 302 and the nozzle 2.

[0054] Optionally, to improve the stability of the buffer plate 7 during movement, two compression springs 8011 may be provided on each first support rod 302 , and the two compression springs 8011 are arranged at intervals along the extending direction of the first support rod 302 .

[0055] In a further embodiment, the locking assembly 801 further includes a limiter, which is configured to limit the maximum distance the buffer plate 7 moves in a direction away from the first support rod 302 .

[0056] Specifically in this embodiment, the limiting member can be configured as a limiting screw 11, which has a T-shaped structure. When installed, the long section of the limiting screw 11 vertically penetrates the buffer plate 7 and is inserted into the front side wall of the first support rod 302. The short section is located in front of the buffer plate 7 and can form a stop with the buffer plate 7 to ensure that the maximum distance the buffer plate 7 can move away from the first support rod 302 is limited. In this way, during the resetting process of the buffer plate 7, the presence of the limiting screw 11 can prevent the buffer plate 7 from vibrating back and forth to a large extent due to factors such as inertia by timely preventing excessive vibration of the buffer plate 7 through the contact between the short section and the buffer plate 7, thereby avoiding adverse effects on the engagement between the locking pin 8014 and the locking slot 8015.

[0057] In other embodiments, the second support mechanism 4 is configured to include an equal number and multiple of second support rods 401, second rollers 402 and a fourth elastic member, the first end of the second support rod 401 is hinged to the main body 1, and the second end is arranged close to the inner circumferential wall of the pipe 12, and multiple second support rods 401 are arranged along the circumferential direction; the second roller 402 is rotatably connected to the second end of the second support rod 401, and forms a rolling fit with the inner circumferential wall of the pipe 12 when in use; the fourth elastic member is connected between the main body 1 and the second support rod 401, and under the action of the fourth elastic member, the second roller 402 has a tendency to press against the inner circumferential wall of the pipe 12.

[0058] Specifically in this embodiment, four second support rods 401 can be provided and evenly arranged along the circumference. The second support rods 401 are strip-shaped and arranged coplanar with the axis of the main body 1 and pointing obliquely rearward. When installed, the inner ends of the second support rods 401 are hinged to the outer wall of the main body 1, and the outer ends are suspended. The number of second rollers 402 is correspondingly four, and they are respectively rotatably mounted on the outer ends of the second support rods 401. The number of fourth elastic members is correspondingly set to four, and the fourth elastic member can be set to a third elastic piece 403. The third elastic piece 403 is a V-shaped structure. The third elastic piece 403 opens toward the rear when installed, and one end is fixed to the outer peripheral wall of the main body 1, and the other end is fixed to the rear side wall of the second support rod 401. Under the action of the third elastic piece 403, the four second support rods 401 have a tendency to open, thereby driving the second roller 402 to press against the inner wall of the pipe 12. On the one hand, it can adapt to the diameter of the pipe 12 and improve the applicability of the equipment. On the other hand, it can place the main body 1 in the middle of the pipe 12 to ensure the stability of the structure.

[0059] In other embodiments, the first support mechanism 3 and the second support mechanism 4 may also each include a positioning ring and a plurality of third support rods. The positioning ring is sleeved on the outside of the main body 1 or the nozzle 2 during installation and abuts against the inner wall of the pipe 12. The plurality of third support rods are arranged circumferentially, with one end fixed to the positioning ring and the other end fixed to the outer peripheral wall of the main body 1 or the outer peripheral wall of the base pipe section of the nozzle 2. In this way, supported by the positioning ring, the main body 1 and the nozzle 2 can both be located in the middle of the pipe 12.

[0060] In other embodiments, the first support mechanism 3 and the second support mechanism 4 can also be configured to include two positioning arc bar groups and multiple fourth support rods, each positioning arc bar group includes multiple positioning arc bars, and the multiple positioning arc bars of the same positioning arc bar group form a quasi-circular structure when installed, and are sleeved on the outside of the main body 1 or the nozzle 2 and abut against the inner wall of the pipe 12. The multiple fourth support rods are arranged along the circumference, with one end fixed to the positioning arc bar and the other end fixed to the outer peripheral wall of the main body 1 or the outer peripheral wall of the base pipe section of the nozzle 2. In this way, with the support of the positioning arc bars, the main body 1 and the nozzle 2 can both be located in the middle of the pipe 12.

[0061] In other embodiments, to improve the cleaning effect of impurities adhering to the inner wall of the pipe 12, a straight punch hole 202 is provided in the middle of the front side of the spray section of the nozzle 2. In this way, when the flushing liquid is sprayed from the straight punch hole 202, it can pre-flush impurities adhering to the inner wall of the pipe 12 in front of the nozzle 2.

[0062] Optionally, the straight punch hole 202 can be configured as a conical structure with the constricted end facing backward. In this way, when the flushing liquid is ejected from the straight punch hole 202, the water flow will quickly diverge to the surrounding areas after rushing out of the constricted end due to the sudden expansion of the outlet space and the diffusion characteristics of the fluid itself, thereby forming a conical spray area. Compared with ordinary straight hole spraying, this conical spray area can greatly expand the coverage of the water flow. During the movement of the nozzle 2 along the axis of the pipe 12, the conical spray area can flush the inner wall of the pipe 12 in front of the nozzle 2 in all directions along the circumferential direction. Whether it is the top, bottom or side of the inner wall of the pipe 12, it can be effectively impacted by the flushing liquid, so that the adhered impurities in the corners and edges that are originally difficult to reach can also be fully pre-flushed. Through this comprehensive pre-flushing along the circumference, not only can the impurities on the inner wall of the pipe 12 be loosened and removed more efficiently, but the flushing liquid subsequently sprayed from the injection hole 201 can also more easily penetrate into the adhesion interface between the impurities and the inner wall of the pipe 12, further improving the overall cleaning effect and ensuring that the inner wall of the pipe 12 is thoroughly and comprehensively cleaned.

[0063] Another embodiment of the present invention further provides a method for clearing and cleaning the inner wall of a pipeline, using any of the above-mentioned devices for clearing and cleaning the inner wall of a pipeline. The method for clearing and cleaning the inner wall of a pipeline comprises the following steps: S1. Place the pipe inner wall dredging and cleaning device in the pipe 12, with the nozzle 2 placed at the front side, and support the nozzle 2 in the middle of the pipe 12 by the first support mechanism 3, and support the main body 1 in the middle of the pipe 12 by the second support mechanism 4; S2. The flushing liquid is introduced into the main body 1. The flushing liquid is sprayed out obliquely under the guidance of the spray hole 201, driving the nozzle 2 to rotate around its own axis while driving the main body 1 to move forward through the nozzle 2.

[0064] Specifically, the flushing liquid can be provided to the main body 1 through the liquid supply system.

[0065] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that variations and modifications are possible without departing from the scope of the present invention, and such variations and modifications are fully within the scope of protection of the present invention.

Claims

1. A pipeline inner wall dredging and cleaning device, characterized in that: The pipeline inner wall dredging and cleaning device includes a main body, a nozzle, a first supporting mechanism and a second supporting mechanism; wherein the main body is configured to receive flushing liquid from the outside; The nozzle is arranged on the main body and can rotate around its own axis. The nozzle is provided with a plurality of spray holes, and the plurality of spray holes are all located on the rear side of the nozzle in the direction of travel. The plurality of spray holes are arranged along the circumferential direction, are all inclined, and are all connected to the main body; The first supporting mechanism is configured to support the nozzle in the middle of the pipeline, and to make the axis of the nozzle coincide with the axis of the pipeline; The second supporting mechanism is configured to support the main body in the middle of the pipe.

2. The pipeline inner wall dredging and cleaning equipment according to claim 1, characterized in that: The first supporting mechanism includes a rotating sleeve, an equal and multiple number of first supporting rods, a first roller and a first elastic member, the rotating sleeve is sleeved on the nozzle and can rotate around its own axis; the first end of the first supporting rod is hinged on the rotating sleeve, and the second end is arranged close to the inner circumferential wall of the pipe, and multiple first supporting rods are arranged along the circumferential direction; the first roller is rotatably connected to the second end of the first supporting rod, and forms a rolling fit with the inner circumferential wall of the pipe when in use; the first elastic member is connected between the rotating sleeve and the first support rod, and under the action of the first elastic member, the first roller has a tendency to press against the inner circumferential wall of the pipe.

3. The pipeline inner wall dredging and cleaning equipment according to claim 2, characterized in that: The pipeline inner wall dredging and cleaning equipment also includes multiple scrapers and multiple second elastic members, the first end of the scraper is hinged to the second end of the first support rod, and the second end is suspended; the second elastic member is connected between the first support rod and the scraper, and under the action of the second elastic member, the scraper has a tendency to press against the inner wall of the pipeline.

4. The pipeline inner wall dredging and cleaning equipment according to claim 3, characterized in that: There is a preset angle between the axis of the first roller and the axis of the nozzle, so that the first roller is tilted.

5. The pipeline inner wall dredging and cleaning equipment according to claim 4, characterized in that: The pipeline inner wall dredging and cleaning device also includes a plurality of buffer plates, which are arranged on the first support rod, with the plate surface of the buffer plate facing the injection hole, and the buffer plate is configured to change the flushing direction of the flushing liquid.

6. The pipeline inner wall dredging and cleaning equipment according to claim 5, characterized in that: The pipeline inner wall dredging and cleaning device also includes a locking mechanism, which is configured to lock the angle between the first support rod and the nozzle when the buffer plate changes the flushing direction of the flushing liquid.

7. The pipeline inner wall clearing and cleaning device according to claim 6, characterized in that: The locking mechanism includes a plurality of locking components, each of which includes a third elastic member, a liquid channel, a piston, a locking pin and a plurality of locking grooves. The third elastic member is connected between the buffer plate and the first support rod, and under the action of the third elastic member, the buffer plate has a tendency to move away from the first support rod; the liquid channel is arranged in the first support rod, and the liquid channel is filled with liquid when in use; the piston is arranged on the buffer plate and slidably inserted at one end of the liquid channel; the plurality of locking grooves are all arranged on the rotating sleeve and arranged circumferentially; the locking pin is slidably inserted at the other end of the liquid channel and can form a snap fit with any one of the locking grooves.

8. The pipeline inner wall clearing and cleaning device according to claim 7, characterized in that: The locking assembly further includes a limiting member configured to limit a maximum distance that the buffer plate moves in a direction away from the first support rod.

9. The pipeline inner wall dredging and cleaning equipment according to claim 1, characterized in that: The second support mechanism includes an equal number of multiple second support rods, second rollers and a fourth elastic member. The first end of the second support rod is hinged on the main body, and the second end is arranged close to the inner circumferential wall of the pipe. The multiple second support rods are arranged along the circumferential direction; the second roller is rotatably connected to the second end of the second support rod and forms a rolling fit with the inner circumferential wall of the pipe when in use; the fourth elastic member is connected between the main body and the second support rod. Under the action of the fourth elastic member, the second roller has a tendency to press against the inner circumferential wall of the pipe.

10. A method for clearing the inner wall of a pipeline, characterized in that: Using the pipeline inner wall dredging and cleaning device according to claim 1, the pipeline inner wall dredging and cleaning method comprises the following steps: S1. Place the pipe inner wall dredging and cleaning device in the pipe, place the nozzle at the front, support the nozzle in the middle of the pipe by a first supporting mechanism, and support the main body in the middle of the pipe by a second supporting mechanism; S2. A flushing liquid is introduced into the main body. The flushing liquid is sprayed out obliquely under the guidance of the spray hole, driving the spray head to rotate around its own axis while driving the main body to move forward through the spray head.

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