Double-wall corrugated pipe

Abstract

The invention relates to the technical field of corrugated pipes, in particular to a double-wall corrugated pipe which comprises a corrugated pipe body and an external hose, mounting mechanisms are fixedly mounted at the two ends of the corrugated pipe body, and a filtering mechanism is fixedly mounted at the inner end of the external hose. When the outer ring is twisted, the telescopic spring on the base plate in the annular groove can be extruded, the sliding strip moves to drive the limiting rod to move, at the moment, the butt joint insertion pipe can be inserted into the butt joint sleeve, the outer ring is loosened after insertion is completed, the limiting spring resets to push the limiting rod to be inserted into the arc-shaped sleeve, and clamping installation of the filter part and the external hose and the two sides of the corrugated pipe body is achieved. When disassembly and assembly are needed, the outer ring is twisted again, the sliding strip extrudes the spring to enable the limiting rod to be separated from the arc-shaped sleeve, then the butt joint insertion pipe can be pulled out, through the design, disassembly and assembly of parts such as the corrugated pipe body become convenient, complex tools are not needed, and the use efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipes, in particular to a double-wall corrugated pipe. Background Art

[0002] Double-wall corrugated pipe is a kind of pipe with a special double-layer structure. From the appearance, the inner wall is very smooth. This design is to allow the fluid to flow smoothly inside the pipe, reduce friction resistance, and thus ensure the efficiency of fluid transportation. The outer wall is corrugated, and these corrugations have many functions. On the one hand, the corrugated structure can enhance the ring stiffness of the pipe. On the other hand, this unique double-wall structure also gives the pipe a certain flexibility.

[0003] The existing HDPE double-wall corrugated pipe has poor anti-clogging effect during use and poor treatment effect on the internal debris of the circulating liquid. When there are too many debris in the circulating liquid, it will cause blockage inside the HDPE double-wall corrugated pipe, which will directly affect the normal use of the HDPE double-wall corrugated pipe.

[0004] The Chinese patent with the announcement number "CN209762520U" discloses a pipe head docking device for double-wall threaded pipes, including a pipe head docking ring, wherein the pipe head docking ring is provided with two groups, and the two groups of pipe head docking rings are respectively fixed at the two end positions of the connecting hose, and the above-mentioned wall threaded pipe I and the double-wall threaded pipe II are connected to each other through the pipe head docking ring, which is convenient for connection and disassembly, and is not easy to fall off, and the connection structure is stable, and good sealing is guaranteed, and the practicality is strong. By connecting the hose, the inconvenience of the double-wall threaded pipe being fixed and requiring maintenance and disassembly is avoided, and the pipe head docking ring can be directly replaced without disassembling the whole;

[0005] The bellows described above do show the characteristics of being easy to disassemble and assemble in actual application. However, its shortcomings are also obvious. During application, the bellows lacks an effective anti-clogging structure and cannot filter and screen various impurities in the circulating liquid. As a result, these impurities will have a significant impact on the related equipment connected to the bellows during use, causing the equipment to be unable to operate normally. As time goes by, impurities continue to accumulate, which is very likely to cause blockage in the equipment or pipeline.

[0006] In addition, in terms of disassembly and assembly, the bellows is mainly assisted by bolts, which means that the overall disassembly and assembly process needs to be assisted by special tools. Such operation makes the disassembly and assembly process more cumbersome and inconvenient. On the whole, there are many inconveniences in the overall use of the bellows. In order to better meet the actual application needs and effectively improve its performance, it is imperative to improve it. Summary of the invention

[0007] The object of the present invention is to provide a double-wall corrugated pipe to solve the problems mentioned in the above background technology that the existing corrugated pipes are inconvenient to disassemble and assemble during use and lack anti-blocking performance.

[0008] To achieve the above object, the present invention provides a double-walled corrugated pipe, comprising a corrugated pipe body and an external hose, both ends of the corrugated pipe body are fixedly installed with mounting mechanisms, the inner end of the external hose is fixedly installed with a filtering mechanism, and the two ends of the corrugated pipe body are connected through the mounting mechanism and the inner end of the filtering mechanism;

[0009] The filtering mechanism includes a filter box, which is fixedly connected to the inner end of an external hose, a filter element is movably installed inside the filter box, a docking pipe is fixedly connected to the inner end of the filter box, the outer end of the docking pipe is connected to the interior of the filter box, the docking pipe is connected to both ends of the corrugated pipe body through the mounting mechanism, and the inner end of the external hose is connected to the interior of the filter box.

[0010] Furthermore, the filter element includes a threaded sleeve, which is fixedly connected to the top of the filter box, the bottom of the threaded sleeve is connected to the inside of the filter box, the outer side of the threaded sleeve is threadedly connected to a sealing cover, and the bottom of the sealing cover is fixedly connected to the filter group.

[0011] Furthermore, the outer surface of the sealing cover is fixedly connected with anti-skid protrusions at equal intervals, and the inner top of the sealing cover is fixedly connected with a sealing gasket.

[0012] Furthermore, the filter element includes a filter screen, the filter screen is fixedly connected to the bottom of the sealing cover, the filter screen covers one end of the filter screen close to the bellows body, and the filter screen is arranged in an arc shape as a whole.

[0013] Furthermore, the filter is internally rotatably connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a spiral turbine, the outer side of the spiral turbine is evenly spaced and arranged in a ring shape and fixedly connected to a cleaning brush plate, and the outer side of the cleaning brush plate is fit-connected to the inner side of the filter.

[0014] Furthermore, a collecting circular frame is fixedly installed at the bottom of the filter screen, and the collecting circular frame is arranged directly below the spiral turbine.

[0015] Furthermore, the installation mechanism includes a docking sleeve and a slide plate, the slide plate is fixedly installed in a ring shape at equal intervals on the outside of the docking pipe close to one end of the filter box, the docking sleeve is fixedly installed at both ends of the corrugated pipe body, an annular groove is opened on the outer surface of the docking sleeve close to one end of the corrugated pipe body, and an internal limiting component of the annular groove is provided. The outer end of the outer surface of the docking sleeve is provided with limiting grooves at equal intervals, the slide plate is inserted into the inner side of the limiting groove, and the inner end of the slide plate is clamped with the limiting component.

[0016] Furthermore, the limit assembly includes an arc-shaped sleeve and a base plate, the arc-shaped sleeve is fixedly installed on the outer side of the slide plate near one end of the corrugated tube, the base plate is arranged in a ring shape with equal intervals and fixedly installed inside the annular groove, a telescopic spring is fixedly installed on one side of the base plate, a sliding bar is fixedly connected to the outer end of the telescopic spring, an outer ring is fixedly connected to the outer side of the sliding bar, a limiting rod is fixedly connected to the side of the outer ring near the filter box with equal intervals, and the limiting rod is inserted into the interior of the arc-shaped sleeve.

[0017] Furthermore, the limiting rod is arranged in an arc shape, the side surface of the sliding bar is also arranged in an arc shape, and the limiting rod, the arc-shaped sleeve, the sliding bar and the annular groove are arranged in concentric circles.

[0018] Furthermore, the outer side of the outer ring is fixedly connected with anti-skid protrusions at equal intervals, and the cross-sectional shapes of the slide bar and the annular groove are both set to be convex shapes.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, in the present invention, a series of operations can be achieved by twisting the outer ring in actual use. When the outer ring is twisted, the telescopic spring on the base plate in the annular groove is squeezed, so that the slide bar moves and then drives the limit rod to move. At this time, the docking plug can be inserted into the docking sleeve. After the insertion is completed, the outer ring is loosened, and the limit spring is reset to push the limit rod to insert into the arc sleeve, so that the filter and the external hose are clamped and installed on both sides of the bellows body. When disassembly and assembly are required, the outer ring is twisted again, and the slide bar squeezes the spring to make the limit rod separate from the arc sleeve, so that the docking plug can be pulled out. This design makes the disassembly and assembly of the bellows body and other components convenient, without the need for complex tools, and improves the use efficiency.

[0021] Secondly, in the present invention, the filter mechanism is an important part of the present invention. When in use, the filter screen is inserted into the inner side of the threaded sleeve, and then the sealing cover is twisted to cover the threaded sleeve to seal the filter box and stably install the filter screen. During use, the fluid can drive the spiral turbine on the outer surface of the rotating shaft to rotate, thereby driving the rotating shaft to rotate, so that the cleaning brush plate rotates in a ring shape, and the outer side of the cleaning brush plate fits the inner wall of the filter screen, which can clean and rub the impurities inside the filter screen. The cleaned dust and impurities sink into the collection circular frame, and the spiral turbine uses fluid power to start the cleaning brush plate to rotate, which effectively avoids the clogging of the filter screen and improves the flow rate of the fluid inside the bellows body.

[0022] Thirdly, in the present invention, the device of the present invention as a whole has strong cleaning and impurity prevention performance and subsequent cleaning convenience. When cleaning is needed, the sealing cover only needs to be twisted to disengage from the threaded sleeve, and the filter net can be pulled out and the collection circular frame can be taken out to clean impurities. This design not only ensures the stability of the bellows during use, but also improves the overall stability of the equipment using the bellows. Through the synergistic effect of the installation mechanism and the filtering mechanism, the bellows of the present invention performs well in convenience, anti-blocking performance and cleanliness, and provides a better solution for applications in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the split state structure in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the installation mechanism in the present invention in a separated state;

[0027] Figure 5 It is a schematic diagram of the structure of the telescopic spring, the slide bar and the outer ring in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the filter element in the present invention;

[0029] Figure 7 This is a schematic diagram of the internal structure of the filter box in the present invention;

[0030] Figure 8 For the present invention Figure 1 A is an enlarged structural diagram of FIG.

[0031] In the figure: 1. bellows body; 2. filtering mechanism; 21. filter box; 22. filter element; 221. threaded sleeve; 222. sealing cover; 223. filter group; 2231. filter screen; 2232. rotating shaft; 2233. spiral turbine; 2234. cleaning brush plate; 2235. collecting round frame; 23. docking pipe; 3. installation mechanism; 31. docking sleeve; 32. slide plate; 33. annular groove; 34. limiting groove; 35. limiting assembly; 351. arc sleeve; 352. base plate; 353. telescopic spring; 354. slide bar; 355. outer ring; 356. limiting rod; 357. anti-skid boss; 4. external hose. DETAILED DESCRIPTION

[0032] See also Figure 1-Figure 8In an embodiment of the present invention, a double-walled corrugated pipe comprises a corrugated pipe body 1 and an external hose 4, both ends of the corrugated pipe body 1 are fixedly mounted with mounting mechanisms 3, the inner end of the external hose 4 is fixedly mounted with a filtering mechanism 2, and both ends of the corrugated pipe body 1 are connected to the inner end of the filtering mechanism 2 through the mounting mechanism 3;

[0033] The filter mechanism 2 includes a filter box 21, which is fixedly connected to the inner end of the external hose 4, and a filter element 22 is movably installed inside the filter box 21. A docking plug 23 is fixedly connected to the inner end of the filter box 21, and the outer end of the docking plug 23 is connected to the inside of the filter box 21. The docking plug 23 is connected to both ends of the bellows body 1 through the mounting mechanism 3, and the inner end of the external hose 4 is connected to the inside of the filter box 21. The mounting mechanisms 3 are arranged at both ends of the bellows body 1, and the filter mechanism 2 is installed at the inner end of the external hose 4. The two are efficiently connected through the mounting mechanism 3, which greatly improves the convenience of assembly of the overall system. In practical applications, both installation and subsequent maintenance and replacement operations can be faster and more labor-saving. Secondly, the filter box 21 in the filter mechanism 2 plays a key role. It is fixedly connected to the inner end of the external hose 4 to ensure the stability of the connection. The filter element 22 movably installed inside can filter the liquid passing through the bellows. The fluid is finely filtered to effectively remove foreign particles, suspended matter, etc. in the fluid, and these impurities are prevented from entering the bellows body 1 and subsequent equipment, thereby protecting the normal operation of the entire fluid delivery system. On the one hand, the service life of the bellows is extended, and on the other hand, the maintenance cost caused by damage to the equipment caused by impurities is reduced. Furthermore, the docking pipe 23 is an important component connecting the filter box 21 and the bellows body 1. Its outer end is connected to the inside of the filter box 21, and a stable connection is achieved through the installation mechanism 3, which ensures the sealing of the fluid during the transmission process and avoids the risk of leakage. At the same time, the connection design between the inner end of the external hose 4 and the inside of the filter box 21 makes the fluid transmission of the entire system smoother and unobstructed, and can adapt to various complex usage scenarios and different fluid delivery requirements. Whether it is fluid transportation in the industrial field or in civil water supply and drainage systems, this double-wall corrugated pipe can exert excellent performance.

[0034] See also Figure 1-Figure 7The filter element 22 includes a threaded sleeve 221, which is fixedly connected to the top of the filter box 21, and the bottom of the threaded sleeve 221 is connected to the inside of the filter box 21. The outer side of the threaded sleeve 221 is threadedly connected with a sealing cover 222, and the bottom of the sealing cover 222 is fixedly connected with a filter group 223. The outer surface of the sealing cover 222 is fixedly connected with anti-slip protrusions at equal intervals, and the top of the sealing cover 222 is fixedly connected with a sealing gasket. The threaded sleeve 221 is fixedly connected to the top of the filter box 21 and the bottom is connected to the inside of the filter box 21. This connection method is stable and reliable, ensuring that the fluid can smoothly enter the filter box 21 from the threaded sleeve 221 for filtering. The threaded connection design makes the installation and removal of the sealing cover 222 more convenient, and it is convenient to install the filter element 2 when needed. 2 for maintenance and cleaning, the equally spaced anti-skid protrusions on the outside of the sealing cover 222 increase the friction during operation, making it easy for the operator to tighten or loosen the sealing cover 222, thereby improving the convenience and safety of operation, and the sealing gasket on the top of the sealing cover 222 can form a good sealing effect when the sealing cover 222 is connected to the threaded sleeve 221 to prevent fluid leakage and ensure the sealing and stability of the entire filtering process. The filter group 223 is fixed under the threaded sleeve 221 through the sealing cover 222, which can effectively filter the fluid passing through the bellows, remove impurities therein, and protect the normal operation of the bellows body 1 and subsequent equipment. The design of the filter element 22 not only improves the filtering performance of the double-walled bellows, but also provides a more stable and efficient guarantee for the fluid delivery system.

[0035] See also Figure 1-Figure 7The filter element 22 includes a filter screen 2231, which is fixedly connected to the bottom of the sealing cover 222. The filter screen 2231 covers one end of the filter screen 2231 close to the bellows body 1. The filter screen 2231 is arranged in an arc shape as a whole. The filter screen 2231 is rotatably connected to the inside of the filter screen 2231 with a rotating shaft 2232. The outer surface of the rotating shaft 2232 is fixedly connected to a spiral turbine 2233. The outer side of the spiral turbine 2233 is evenly spaced and arranged in a ring shape and fixedly connected to a cleaning brush plate 2234. The outer side of the cleaning brush plate 2234 is fitted and connected to the inner side of the filter screen 2231. The bottom of the filter screen 2231 is fixedly installed with a collecting The collecting circular frame 2235 is arranged directly below the spiral turbine 2233. The filter screen 2231 is fixedly connected to the bottom of the sealing cover 222, and can effectively filter the fluid before it enters the bellows body 1. The filter screen 2231 is arranged in an arc shape as a whole. On the one hand, this shape increases the filtering area, so that more fluid can be filtered through the filter screen 2231 at the same time to filter impurities, thereby improving the filtering efficiency; on the other hand, the arc design also enables the filter screen 2231 to better withstand the pressure of the fluid during the filtering process, and is not easy to deform, thereby ensuring the stability and reliability of the filtering. 2231 covers one end close to the bellows body 1, which can ensure that the fluid entering the bellows is filtered, effectively protecting the bellows body 1 and subsequent equipment from damage by impurities. The spiral turbine 2233 on the outer surface of the shaft 2232 can rotate under the action of the fluid. When the fluid passes through the filter screen 2231, it will drive the spiral turbine 2233 to rotate. This design cleverly utilizes the power of the fluid without the need for additional energy input. The cleaning brush plates 2234 fixedly connected to the outer side of the spiral turbine 2233 are arranged in a ring shape at equal intervals. They rotate with the rotation of the spiral turbine 2233. The cleaning brush plates 2234 The outer side is fitted and connected with the inner side of the filter 2231, and during the rotation, the impurities on the inner side of the filter 2231 can be cleaned and brushed to prevent the impurities from clogging the filter 2231, thereby ensuring the filtering effect of the filter 2231 and the smooth flow of the fluid. The cleaned dust and impurities will slowly sink into the collecting circular frame 2235, and the collecting circular frame 2235 is arranged directly below the spiral turbine 2233, which can effectively collect the filtered impurities and facilitate subsequent centralized cleaning. This design not only improves the filtering performance of the bellows, but also makes the filter element 22 have a self-cleaning function, reducing the frequency and difficulty of manual cleaning.

[0036] See also Figure 1-Figure 5 and Figure 8The mounting mechanism 3 includes a docking sleeve 31 and a slide plate 32. The slide plate 32 is fixedly installed in an annular shape at equal intervals on the outer side of the docking plug 23 near the end of the filter box 21. The docking sleeve 31 is fixedly installed at both ends of the bellows body 1. An annular groove 33 is provided on the outer surface of the docking sleeve 31 near the end of the bellows body 1. The inner limit assembly 35 of the annular groove 33 is provided. The outer end of the outer surface of the docking sleeve 31 is provided with limit grooves 34 at equal intervals. The slide plate 32 is inserted into the inner side of the limit groove 34. The inner end of the slide plate 32 is clamped with the limit assembly 35. The limit assembly 35 includes an arc-shaped sleeve 351 and a base plate 352. The arc-shaped sleeve 351 is fixedly installed on the outer side of the slide plate 32 near the end of the bellows. The base plate 352 is evenly spaced. The base plate 352 is fixedly mounted in an annular groove 33 in an annular arrangement. A telescopic spring 353 is fixedly mounted on one side of the base plate 352. A slide bar 354 is fixedly connected to the outer end of the telescopic spring 353. An outer ring 355 is fixedly connected to the outer side of the slide bar 354. A limiting rod 356 is fixedly connected to the side of the outer ring 355 close to the filter box 21 at an equal interval. The limiting rod 356 is inserted into the interior of the arc sleeve 351. The butt sleeve 31 is fixedly mounted at both ends of the bellows body 1, providing a stable foundation for the connection between the bellows and the external hose 4. The annular groove 33 opened on the outer surface close to one end of the bellows body 1 and the internal limiting assembly 35, the limiting groove 34 opened at an equal interval from the outer end of the outer surface and the slide plate 32 inserted therein The arc-shaped sleeve 351 in the limit assembly 35 is fixedly mounted on the outer side of the slide plate 32 near the end of the bellows, and interacts with the base plate 352 fixedly mounted in an annular arrangement at equal intervals inside the annular groove 33. The telescopic spring 353 on one side of the base plate 352 provides the entire installation mechanism 3 with an elastic adjustment function. When the bellows body 1 and the external hose 4 need to be connected, the telescopic spring 353 can adapt to the connection of components of different sizes within a certain range, thereby improving the flexibility of installation. The outer ring 355 on the outer side of the slide bar 354 is convenient for operators to operate. The limit rods 356 fixedly connected to the outer ring 355 at equal intervals near the side of the filter box 21 can be inserted into the arc-shaped sleeve 351. The inside of the sleeve 351 realizes the limitation and fixation of the slide plate 32. This design makes the connection between the bellows body 1 and the external hose 4 more firm and reliable, and prevents loosening or leakage during fluid transportation. In the actual installation and disassembly process, the installation mechanism 3 is simple and convenient to operate. By adjusting the outer ring 355, the connection state of the limit rod 356 and the arc-shaped sleeve 351 can be easily controlled to achieve quick installation and disassembly without complicated tools and cumbersome operating steps, thereby improving work efficiency. At the same time, the stability and reliability of the installation mechanism 3 also ensure the safety and stability of the bellows system during long-term use, and reduce failures and maintenance costs caused by connection problems.

[0037] See also Figure 1-Figure 5 and Figure 8The limit rod 356 is arranged in an arc shape, and the side of the slide bar 354 is also arranged in an arc shape. The limit rod 356, the arc sleeve 351 and the slide bar 354 are arranged concentrically with the annular groove 33. The outer side of the outer ring 355 is fixedly connected with anti-skid protrusions 357 at equal intervals. The cross-sectional shape of the slide bar 354 and the cross-sectional shape of the annular groove 33 are both set to a convex shape. The limit rod 356 is arranged in an arc shape, which matches the shape of the arc sleeve 351, and can better realize the plug-in connection. When the limit rod 356 is inserted into the arc sleeve 351, the arc design makes the contact between the two closer and the connection more stable, effectively preventing accidental separation during use. At the same time, the side of the slide bar 354 is also arranged in an arc shape, and the limit rod 356, the arc sleeve 351 and the slide bar 354 are arranged concentrically with the annular groove 33. This design ensures that the movement trajectory of each component during installation and use is more stable and consistent, and the concentric circle layout makes the force transmission more uniform. The reliability and durability of the entire installation mechanism 3 are improved. The anti-skid bosses 357 fixedly connected at equal intervals on the outside of the outer ring 355 increase the friction force of the operator when adjusting the outer ring 355, making the operation more convenient and safe. In actual operation, the anti-skid bosses 357 can prevent the hand from slipping, ensuring that the operator can accurately control the rotation and movement of the outer ring 355, thereby improving the efficiency of installation and disassembly. The cross-sectional shape of the slide bar 354 and the cross-sectional shape of the annular groove 33 are both set to a convex shape. This design makes the sliding of the slide bar 354 in the annular groove 33 more stable. The convex cross-section can effectively prevent the slide bar 354 from accidentally falling out of the annular groove 33, thereby ensuring the integrity and stability of the installation mechanism 3 during use. At the same time, this shape also provides better support and positioning for the card connection between the slide plate 32 and the limit assembly 35, making the connection more firm and reliable. In short, these design details work together to improve the performance of the double-wall corrugated pipe installation mechanism 3.

[0038] The working principle of the present invention is as follows: by setting the installation mechanism 3, the device can adjust the twisting outer ring 355 during actual use. When the outer ring 355 is twisted, it will squeeze the telescopic spring 353 on the inner base plate 352 of the annular groove 33, causing the telescopic spring 353 to be in a compressed state. At this time, the slide bar 354 will move accordingly, thereby driving the limit rod 356 to move. In this case, the docking plug 23 can be inserted into the docking sleeve 31. At this time, the slide plate 32 is inserted into the inner side of the limit groove 34. When the docking plug 23 and the docking sleeve 31 are inserted, if the outer ring 355 is released, the limit spring will be reset, and then the limit spring will push the limit rod 356 to be inserted into the inner side of the arc-shaped sleeve 351 to assist in the clamping of the slide bar, and then the docking sleeve 31 can be docked. The limit rod 356 and the arc-shaped sleeve 351 are limited in position, and the limit rod 356 and the arc-shaped sleeve 351 are inserted into each other, which can assist in the clamping and installation of the filter element 22 and the external hose 4 on both sides of the bellows body 1. When the filter mechanism 2 and the external hose 4 at both ends of the bellows body 1 need to be disassembled and assembled, the outer ring 355 can be adjusted and twisted to rotate again. The rotation of the outer ring 355 will drive the slide bar 354 to squeeze the telescopic spring 353. At this time, the limit rod 356 can be separated from the inner side of the arc-shaped sleeve 351, so that the limit rod 356 and the arc-shaped sleeve 351 are separated from each other, and then, the docking sleeve 23 can be pulled out from the inner side of the docking sleeve 31. In this way, the device as a whole is convenient for rapid maintenance and disassembly of the bellows body 1, the filter mechanism 2 and the external hose 4, which greatly improves the convenience of using the bellows.

[0039] By setting the filter mechanism 2, during use of the device, the filter screen 2231 can be inserted into the inner side of the threaded sleeve 221, and then, by twisting the sealing cover 222 to cover the outer surface of the threaded sleeve 221, the filter box 21 can be sealed, and the filter screen 2231 can also be stably installed. During use, the filter screen 2231 can effectively filter and screen impurities in the fluid, and during use, the fluid can drive the spiral turbine 2233 on the outer surface of the rotating shaft 2232 to rotate, and the rotation of the spiral turbine 2233 can drive the rotating shaft 2232 to rotate, and the rotation of the rotating shaft 2232 can drive the cleaning brush plate 2234 to rotate in an annular shape, and the outer side of the cleaning brush plate 2234 is in contact with the inner wall of the filter screen 2231. As the cleaning brush plate 2234 moves in an annular shape, the impurities inside the filter screen 2231 can be cleaned and rubbed by the cleaning brush plate 2234, and the cleaned dust and impurities can be removed. The spiral turbine 2233 is pushed by the fluid to start the cleaning brush plate 2234 to rotate, and the outer surface of the filter screen 2231 can be cleaned by the power of the fluid, which effectively avoids the phenomenon of the filter screen 2231 being blocked, so that the device as a whole can have a strong anti-blocking performance, and can improve the flow rate of the fluid inside the bellows body 1. In addition, during its use, if cleaning is required, it is only necessary to twist the sealing cover 222 to disengage the threaded sleeve 221, and then the filter screen 2231 can be pulled out from the inner side of the threaded sleeve 221, and then the filter screen 2231 can be quickly disassembled and assembled, and the collecting frame 2235 can be taken out at this time, so as to facilitate the cleaning of the impurities inside the collecting frame 2235. It can be seen that the device as a whole can have a strong cleaning and anti-impurity performance, and it is easy to clean later, which can improve the overall stability of the bellows and the equipment using the bellows.

Claims

1. A double-wall corrugated pipe, characterized in that: It comprises a bellows body (1) and an external hose (4), wherein both ends of the bellows body (1) are fixedly mounted with a mounting mechanism (3), the inner end of the external hose (4) is fixedly mounted with a filtering mechanism (2), and the two ends of the bellows body (1) are connected to the inner end of the filtering mechanism (2) via the mounting mechanism (3); The filtering mechanism (2) comprises a filtering box (21), the filtering box (21) being fixedly connected to the inner end of an external hose (4), a filtering element (22) being movably mounted inside the filtering box (21), a docking plug (23) being fixedly connected to the inner end of the filtering box (21), the outer end of the docking plug (23) being connected to the inside of the filtering box (21), the docking plug (23) being connected to the two ends of the corrugated pipe body (1) via a mounting mechanism (3), and the inner end of the external hose (4) being connected to the inside of the filtering box (21).

2. A double-wall corrugated pipe according to claim 1, characterized in that: The filter element (22) comprises a threaded sleeve (221), wherein the threaded sleeve (221) is fixedly connected to the top of the filter box (21), the bottom of the threaded sleeve (221) is connected to the interior of the filter box (21), the outer side of the threaded sleeve (221) is threadedly connected to a sealing cover (222), and the bottom of the sealing cover (222) is fixedly connected to a filter group (223).

3. A double-wall corrugated pipe according to claim 2, characterized in that: The outer surface of the sealing cover (222) is fixedly connected with anti-slip protrusions at equal intervals, and the inner top of the sealing cover (222) is fixedly connected with a sealing gasket.

4. A double-wall corrugated pipe according to claim 3, characterized in that: The filter element (22) comprises a filter screen (2231), the filter screen (2231) is fixedly connected to the bottom of the sealing cover (222), the filter screen (2231) covers an end of the filter screen (2231) close to the bellows body (1), and the filter screen (2231) is arranged in an arc shape as a whole.

5. A double-wall corrugated pipe according to claim 4, characterized in that: The filter (2231) is internally rotatably connected to a rotating shaft (2232), the outer surface of the rotating shaft (2232) is fixedly connected to a spiral turbine (2233), the outer side of the spiral turbine (2233) is fixedly connected to cleaning brush plates (2234) arranged in a ring shape at equal intervals, and the outer side of the cleaning brush plate (2234) is fitted and connected to the inner side of the filter (2231).

6. A double-wall corrugated pipe according to claim 5, characterized in that: A collecting circular frame (2235) is fixedly mounted on the bottom of the filter screen (2231), and the collecting circular frame (2235) is arranged directly below the spiral turbine (2233).

7. A double-wall corrugated pipe according to claim 2, characterized in that: The mounting mechanism (3) comprises a docking sleeve (31) and a slide plate (32); the slide plate (32) is fixedly mounted in an annular shape at equal intervals on the outer side of the docking plug (23) near one end of the filter box (21); the docking sleeve (31) is fixedly mounted on both ends of the bellows body (1); an annular groove (33) is provided on the outer surface of the docking sleeve (31) near one end of the bellows body (1); a limiting assembly (35) is provided inside the annular groove (33); limiting grooves (34) are provided at equal intervals on the outer end of the outer surface of the docking sleeve (31); the slide plate (32) is inserted into the inner side of the limiting groove (34); the inner end of the slide plate (32) is snap-fitted to the limiting assembly (35).

8. A double-wall corrugated pipe according to claim 7, characterized in that: The limiting assembly (35) comprises an arc-shaped sleeve (351) and a base plate (352); the arc-shaped sleeve (351) is fixedly mounted on the outer side of the slide plate (32) near one end of the corrugated tube; the base plate (352) is arranged in an annular shape at equal intervals and fixedly mounted inside the annular groove (33); a telescopic spring (353) is fixedly mounted on one side of the base plate (352); a sliding bar (354) is fixedly connected to the outer end of the telescopic spring (353); an outer ring (355) is fixedly connected to the outer side of the sliding bar (354); a limiting rod (356) is fixedly connected to the side of the outer ring (355) near the filter box (21) at equal intervals; and the limiting rod (356) is inserted into the interior of the arc-shaped sleeve (351).

9. A double-wall corrugated pipe according to claim 8, characterized in that: The limiting rod (356) is arranged in an arc shape, and the side surface of the sliding bar (354) is also arranged in an arc shape. The limiting rod (356), the arc-shaped sleeve (351), the sliding bar (354) and the annular groove (33) are arranged in concentric circles.

10. A double-wall corrugated pipe according to claim 8, characterized in that: The outer side of the outer ring (355) is fixedly connected with anti-skid protrusions (357) at equal intervals, and the cross-sectional shape of the slide bar (354) and the cross-sectional shape of the annular groove (33) are both set to be convex.

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