Pipe system dust removal device for pipeline laying and dust removal method

Abstract

The invention discloses a pipe system dust removal device for pipeline laying and a dust removal method. No less than two groups of walking ends on a variable-diameter walking vehicle are in rolling fit with the inner wall of a pipeline; the rolling type cleaning assembly is installed at the front end of the variable-diameter walking vehicle, the power output end of the variable-diameter walking vehicle is connected with the power input end of the rolling type cleaning assembly, and the outer edge of the rolling type cleaning assembly is matched with the inner wall of the pipeline to form a closed spiral cleaning groove. Bristles, a scraper assembly and a negative pressure hole are arranged in the closed spiral cleaning groove; the negative pressure equipment is arranged on the variable-diameter walking vehicle, and the air inlet end of the negative pressure equipment is communicated with the negative pressure hole through a negative pressure pipe and a rotary connector. When the device works, the outer edge of the rolling type cleaning assembly is matched with the inner wall of the pipeline to form a closed spiral cleaning groove, and raised dust cannot leak out during cleaning, so that the influence on the device is reduced; and impurities are gathered in the closed spiral cleaning groove and can be better collected by negative pressure equipment, and the cleaning effect on the pipeline is improved as much as possible.

Description

Technical Field

[0001] This invention relates to the field of pipe dust removal equipment technology, and in particular to a pipe system dust removal device and method for pipeline laying. Background Technology

[0002] Heating pipes are laid either above ground or underground. In cities, underground laying is more common to avoid affecting the cityscape and traffic. Regardless of the laying method, dust and soil particles inevitably get into the pipes, affecting their use and potentially causing blockages. To avoid these problems, pipes are cleaned for a period after installation and before use. Above-ground pipes, being exposed, can be cleaned using a magnetic force to move a cleaning disc placed inside the pipe (a traditional method, also known as a makeshift method). This method is low-cost, can be performed on-site anytime and anywhere, and is suitable for short distances. However, this traditional method is not feasible for underground pipes, so existing underground pipe cleaning robots are used.

[0003] For example, Chinese invention patent CN114165679B, entitled "A Self-Balancing Adaptive Robot for Cleaning Underground Pipelines," mainly includes a variable-diameter walking mechanism, a grinding mechanism, and a cutting mechanism to provide a working mode in which the robot walks while cleaning the inner wall of the pipeline. However, when the robot is working, it generates a lot of dust while cleaning the inner wall of the pipeline. This can damage the equipment, especially the electrical components inside the equipment. Furthermore, it cannot effectively collect the cleaned impurities from the pipeline, leaving impurities on the inner wall of the pipeline after cleaning. Summary of the Invention

[0004] The purpose of this invention is to provide a dust removal device and method for pipeline laying, in order to solve the problems of existing underground pipeline cleaning robots generating a lot of dust during operation, which can damage the equipment and cannot fully collect the impurities after cleaning.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A dust collection device for pipeline laying, comprising: A variable-diameter traveling vehicle, wherein the traveling end of the variable-diameter traveling vehicle is not less than two sets and rolls in cooperation with the inner wall of the pipe; A rolling cleaning assembly is installed at the front end of the variable-diameter traveling vehicle. The power output end of the variable-diameter traveling vehicle is connected to the power input end of the rolling cleaning assembly. The outer edge of the rolling cleaning assembly fits with the inner wall of the pipe to form a closed spiral cleaning groove. The sealed spiral cleaning groove is equipped with brush bristles, a scraper assembly, and a negative pressure hole; A negative pressure device is installed on the variable diameter traveling vehicle, and the air inlet of the negative pressure device is connected to the negative pressure hole through a negative pressure pipe and a rotary joint.

[0006] A further technical solution is as follows: the variable-diameter traveling vehicle includes a carriage, a mobile power supply, a motor, a first cross commutator, a drive shaft, a bevel gear pair, and a flexible traveling mechanism. The mobile power supply and the motor are both located inside the carriage. The mobile power supply is electrically connected to the motor. The power output end of the motor is connected to the power input end of the first cross commutator. The power input end of the drive shaft is connected to the power output end of the first cross commutator. A plurality of the flexible traveling mechanisms are located on the carriage. The power input end of at least one of the flexible traveling mechanisms is connected to the drive shaft via the bevel gear pair.

[0007] A further technical solution is: the elastic walking mechanism includes a wheel seat, a walking wheel, a rotating shaft, a bushing, a guide post, and a spring. The wheel seat is slidably mounted on the vehicle body via the guide post. The spring is fitted on the guide post and abuts against the wheel seat. The bushing is rotatably mounted on the vehicle body. The rotating shaft is slidably mounted on the bushing. The walking wheel is disposed on the wheel seat. The inner end of the rotating shaft on at least one of the elastic walking mechanisms is connected to the drive shaft via the bevel gear pair, and the outer end of the rotating shaft is connected to the walking wheel via the second cross reversing device.

[0008] A further technical solution is: the rolling cleaning assembly includes a hollow cylinder, a spiral blade, and a sealing plate. The hollow cylinder is connected to the outer end of the drive shaft, the spiral blade is disposed on the hollow cylinder, and the sealing plate is disposed on the spiral blade.

[0009] A further technical solution is: the sealing sheet includes a rubber strip and a wear-resistant strip, the rubber strip is disposed on the spiral plate, and the wear-resistant strip is disposed on the rubber strip.

[0010] A further technical solution is: the scraper assembly includes a central shaft, a torsion spring, and a scraper. The two ends of the central shaft are disposed on opposite sides of the spiral blade. The scraper is rotatably mounted on the central shaft and slides against the inner wall of the pipe through the torsion spring.

[0011] A further technical solution is that the blade of the scraper is a flat blade or a serrated blade.

[0012] A method for dust removal in pipeline laying, using a pipeline dust removal device, comprises the following steps: S1. Prepare a suitable sealing plate according to the diameter of the pipe to be cleaned, and install the sealing plate on the spiral plate with screws; S2. Invert the pipe dust collector into the pipe, clean the pipe opening, remove the pipe dust collector, and then insert the pipe dust collector back into the pipe. S3. In S2, along the forward direction of the pipe dust removal device, the annular air outlet at the head of the negative pressure equipment is tilted towards the inner wall of the pipe, and the air inlet at the tail of the rolling cleaning assembly and the annular air outlet of the negative pressure equipment form a cleaning airflow.

[0013] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This invention proposes a pipe system dust removal device for pipeline laying. When cleaning the inner wall of the pipeline, the outer edge of the rolling cleaning assembly engages with the inner wall of the pipeline to form a closed spiral cleaning groove. A variable-diameter traveling vehicle moves the rolling cleaning assembly forward while simultaneously driving it to rotate, thus cleaning the inner wall of the pipeline. Impurities on the inner wall of the pipeline are removed within the closed spiral cleaning groove, preventing dust leakage and minimizing its impact on the device. Furthermore, the impurities are collected in the closed spiral cleaning groove, allowing for better collection by negative pressure equipment.

[0014] The pipe system dust removal method used in pipeline laying utilizes a sealing plate to ensure a tight fit between the outer edge of the rolling cleaning assembly and the inner wall of the pipe, forming a closed spiral cleaning groove that can accommodate pipes of different diameters. During cleaning, the device is first inverted and inserted into the pipe to facilitate cleaning the pipe inlet position and overcome the problem of dead corners in pipe openings caused by the length of the device. In addition, the negative pressure equipment needs to simultaneously intake and exhaust air during operation. The exhaust air from the negative pressure equipment performs a secondary cleaning (mainly blowing) on ​​the inner wall of the cleaned pipe, while the air inlet at the tail of the rolling cleaning assembly absorbs the blown dust, maximizing the cleaning effect on the inner wall of the pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pipe system dust removal device for pipeline laying according to the present invention.

[0016] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of a variable-path traveling vehicle.

[0017] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of a variable-path traveling vehicle from a side view.

[0018] Figure 4 For the present invention Figure 2 A schematic diagram of the flexible walking mechanism.

[0019] Figure 5 For the present invention Figure 1 A schematic diagram of the structure of the rolling cleaning assembly.

[0020] Figure 6 For the present invention Figure 5 A schematic diagram of the middle scraper assembly.

[0021] Figure 7 For the present invention Figure 5 A schematic diagram of the structure from a side view.

[0022] Reference numerals: 1. Variable diameter traveling vehicle; 2. Rolling cleaning assembly; 3. Negative pressure equipment; 4. Pipe; 5. Brush; 6. Scraper assembly; 61. Central shaft; 62. Torsion spring; 63. Scraper; 7. Negative pressure hole; 8. Sealed spiral cleaning groove; 9. Negative pressure pipe; 10. Rotary joint; 11. Carriage; 12. Mobile power supply; 13. Electric motor; 14. First cross reversing device; 15. Drive shaft; 16. Bevel gear pair; 17. Flexible traveling mechanism; 18. Wheel seat; 19. Traveling wheel; 20. Rotating shaft; 21. Bushing; 22. Guide column; 23. Spring; 24. Second cross reversing device; 25. Hollow cylinder; 26. Spiral blade; 27. Sealing plate; 271. Rubber strip; 272. Wear-resistant strip. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0029] This implementation example Figure 1 As shown, a pipe system dust removal device for pipeline laying includes: a variable diameter traveling vehicle 1, with at least two traveling ends on the variable diameter traveling vehicle 1 that roll in cooperation with the inner wall of the pipe 4; a rolling cleaning assembly 2, which is installed at the front end of the variable diameter traveling vehicle 1, with the power output end of the variable diameter traveling vehicle 1 connected to the power input end of the rolling cleaning assembly 2, and the outer edge of the rolling cleaning assembly 2 cooperating with the inner wall of the pipe 4 to form a closed spiral cleaning groove 8; the closed spiral cleaning groove 8 is provided with brush bristles 5, scraper assembly 6 and negative pressure hole 7; and a negative pressure device 3, which is installed on the variable diameter traveling vehicle 1, and the air inlet end of the negative pressure device 3 is connected to the negative pressure hole 7 through a negative pressure pipe 9 and a rotary joint 10.

[0030] The variable diameter traveling vehicle 1 can use pipes 4 of various diameters within a certain range. The traveling end of the variable diameter traveling vehicle 1 will press against the inner wall of the pipe 4 to achieve movement within the pipe 4. The rolling cleaning assembly 2 will also move with the variable diameter traveling vehicle 1. At the same time, the rolling cleaning assembly 2 is driven to rotate by the variable diameter traveling vehicle 1. With the help of the scraper assembly 6 and the bristles 5, the inner wall of the pipe 4 is cleaned. The outer edge of the rolling cleaning assembly 2 cooperates with the inner wall of the pipe 4 to form a closed spiral cleaning groove 8. Impurities on the inner wall of the pipe 4 will be cleaned in the closed spiral cleaning groove 8, forming dust that will not leak out, thereby reducing the impact on the device. Moreover, impurities are collected in the closed spiral cleaning groove 8, and smaller impurities can be better collected by the negative pressure device 3 through the negative pressure hole 7. Example

[0031] Based on the above embodiments, this embodiment, for example Figure 2 , Figure 3 and Figure 4 As shown, the variable-diameter traveling vehicle 1 includes a vehicle body 11, a mobile power supply 12, a motor 13, a first cross commutator 14, a drive shaft 15, a bevel gear pair 16, and an elastic traveling mechanism 17. The mobile power supply 12 and the motor 13 are both installed inside the vehicle body 11. The mobile power supply 12 is electrically connected to the motor 13. The power output end of the motor 13 is connected to the power input end of the first cross commutator 14. The power input end of the drive shaft 15 is connected to the power output end of the first cross commutator 14. Multiple elastic traveling mechanisms 17 are installed on the vehicle body 11. The power input end of at least one elastic traveling mechanism 17 is connected to the drive shaft 15 through the bevel gear pair 16.

[0032] The electric motor 13 drives the drive shaft 15 to rotate within the carriage 11 via the first cross commutator 14. A rechargeable mobile power supply 12 provides power to the electric motor 13. The drive shaft 15 drives at least one flexible walking mechanism 17 via a bevel gear pair 16. The wheels of this flexible walking mechanism 17 abut against the inner wall of the pipe 4 and rotate, allowing the variable-diameter walking vehicle 1 to advance along the pipe 4. As the drive shaft 15 rotates, it also drives the rotation of the rolling cleaning assembly 2 to clean the inner wall of the pipe 4.

[0033] The variable-diameter traveling vehicle 1 can also use a variable-diameter traveling mechanism in the prior art.

[0034] Preferably, the flexible walking mechanism 17 includes a wheel seat 18, a walking wheel 19, a rotating shaft 20, a bushing 21, a guide post 22, and a spring 23. The wheel seat 18 is slidably mounted on the vehicle body 11 via the guide post 22. The spring 23 is fitted onto the guide post 22 and abuts against the wheel seat 18. The bushing 21 is rotatably mounted on the vehicle body 11. The rotating shaft 20 is slidably mounted on the bushing 21. The walking wheel 19 is disposed on the wheel seat 18. The inner end of the rotating shaft 20 on at least one flexible walking mechanism 17 is connected to the transmission shaft 15 via a bevel gear pair 16, and the outer end of the rotating shaft 20 is connected to the walking wheel 19 via a second cross reversing device 24.

[0035] The drive shaft 15 drives the rotating shaft 20 of at least one elastic walking mechanism 17 to rotate via the bevel gear pair 16. The rotating shaft 20 is then connected to the walking wheel 19 via the second cross reversing device 24. At this time, the walking wheel 19 will rotate, and under the action of the spring 23, the walking wheel 19 will press against the inner wall of the pipe 4 to realize the variable diameter walking function. Example

[0036] Based on the above embodiments, this embodiment, for example Figure 5 and Figure 7 As shown, the rolling cleaning assembly 2 includes a hollow cylinder 25, a spiral blade 26, and a sealing plate 27. The hollow cylinder 25 is connected to the outer end of the drive shaft 15, the spiral blade 26 is disposed on the hollow cylinder 25, and the sealing plate 27 is disposed on the spiral blade 26.

[0037] Driven by the variable-diameter traveling vehicle 1, the hollow cylinder 25 moves forward and rotates simultaneously. The spiral blades 26 form spiral grooves in the hollow cylinder 25, and the sealing plate 27 ensures that the outer edge of the rolling cleaning assembly 2 is tightly fitted with the inner wall of the pipe 4, forming a closed spiral cleaning groove 8. This serves several purposes: first, the cleaning work is carried out in a sealed environment; second, the spiral rotation can thoroughly clean the inner wall of the pipe 4; third, the enlarged length of the closed spiral cleaning groove 8 allows for a larger amount of dust, especially large particles; and fourth, the closed spiral cleaning groove 8 has a greater number of spirals, so one forward movement is equivalent to multiple cleanings of the inner wall of the pipe 4, resulting in a better cleaning effect.

[0038] It is worth noting that sealing baffles (such as soft rubber plates) can be installed at both ends of the rolling cleaning assembly 2 to ensure airtightness and prevent dust leakage.

[0039] Preferably, the sealing sheet 27 includes a rubber strip 271 and a wear-resistant strip 272, with the rubber strip 271 disposed on the spiral sheet 26 and the wear-resistant strip 272 disposed on the rubber strip 271.

[0040] The rubber strip 271 provides a buffer for diameter changes and also ensures that the wear-resistant strip 272 is tightly pressed against the inner wall of the pipe 4, forming a closed cleaning environment to prevent dust from leaking out. Example

[0041] Based on the above embodiments, this embodiment, for example Figure 6 As shown, the scraper assembly 6 includes a central shaft 61, a torsion spring 62, and a scraper 63. The two ends of the central shaft 61 are disposed on opposite sides of the spiral blade 26. The scraper 63 is rotatably mounted on the central shaft 61 and slides against the inner wall of the pipe 4 through the torsion spring 62.

[0042] Under the action of the torsion spring 62, the scraper 63 will always be pressed against the inner wall of the pipe 4. As the hollow cylinder 25 rotates, the scraper 63 cleans the inner wall of the pipe 4 and can adapt to changes in the diameter of the pipe 4 within a certain range. Multiple scraper assemblies 6 are arranged along the closed spiral cleaning groove 8, which can realize multi-level cleaning work and improve the cleaning effect.

[0043] Preferably, the blade of the scraper 63 is a flat blade or a serrated blade.

[0044] A flat blade has a large cleaning surface, but it cannot effectively remove harder impurities. In this case, a serrated blade can be used instead, which has a very small working surface and a better cleaning effect.

[0045] A method for dust removal in pipeline laying, using a pipeline dust removal device, comprises the following steps: S1. Prepare a suitable sealing plate according to the diameter of the pipe to be cleaned, and install the sealing plate on the spiral plate with screws; S2. Invert the pipe dust collector into the pipe, clean the pipe opening, remove the pipe dust collector, and then insert the pipe dust collector back into the pipe. S3. In S2, along the forward direction of the pipe dust removal device, the annular air outlet at the head of the negative pressure equipment is tilted towards the inner wall of the pipe, and the air inlet at the tail of the rolling cleaning assembly and the annular air outlet of the negative pressure equipment form a cleaning airflow.

[0046] Choosing a suitable sealing plate ensures that the outer edge of the rolling cleaning assembly fits tightly against the inner wall of the pipe, forming a closed spiral cleaning groove that can accommodate pipes of different diameters. During cleaning, the device is first placed upside down into the pipe to facilitate cleaning the pipe inlet and overcome the problem of dead corners in the pipe opening caused by the length of the device. In addition, the negative pressure equipment needs to simultaneously intake and exhaust air during operation. The exhaust air from the negative pressure equipment performs a secondary cleaning (mainly blowing) on ​​the inner wall of the cleaned pipe, while the air inlet at the tail of the rolling cleaning assembly absorbs the blown dust, maximizing the cleaning effect on the inner wall of the pipe.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipe system dust removal device for pipeline laying, characterized in that, include: A variable-diameter traveling vehicle (1) has at least two sets of traveling ends that roll in cooperation with the inner wall of the pipe (4). A rolling cleaning assembly (2) is installed at the front end of the variable diameter traveling vehicle (1). The power output end of the variable diameter traveling vehicle (1) is connected to the power input end of the rolling cleaning assembly (2). The outer edge of the rolling cleaning assembly (2) is fitted with the inner wall of the pipe (4) to form a closed spiral cleaning groove (8). The sealed spiral cleaning groove (21) is provided with brush bristles (5), scraper assembly (6) and negative pressure hole (7). The negative pressure device (3) is installed on the variable diameter traveling vehicle (1), and the air inlet of the negative pressure device (3) is connected to the negative pressure hole (7) through the negative pressure pipe (9) and the rotary joint (10).

2. The pipe system dust removal device for pipeline laying according to claim 1, characterized in that: The variable-diameter traveling vehicle (1) includes a carriage (11), a mobile power supply (12), a motor (13), a first cross commutator (14), a drive shaft (15), a bevel gear pair (16), and an elastic traveling mechanism (17). The mobile power supply (12) and the motor (13) are both located inside the carriage (11). The mobile power supply (12) is electrically connected to the motor (13). The power output end of the motor (13) is connected to the power input end of the first cross commutator (14). The power input end of the drive shaft (15) is connected to the power output end of the first cross commutator (14). Multiple elastic traveling mechanisms (17) are located on the carriage (11). The power input end of at least one elastic traveling mechanism (17) is connected to the drive shaft (15) via the bevel gear pair (16).

3. The pipe system dust removal device for pipeline laying according to claim 2, characterized in that: The elastic walking mechanism (17) includes a wheel seat (18), a walking wheel (19), a rotating shaft (20), a bushing (21), a guide post (22), and a spring (23). The wheel seat (18) is slidably mounted on the vehicle body (11) via the guide post (22). The spring (23) is fitted on the guide post (22) and abuts against the wheel seat (18). The bushing (21) is rotatably mounted on the vehicle body (11). The rotating shaft (20) is slidably mounted on the bushing (21). The walking wheel (19) is mounted on the wheel seat (18). The inner end of the shaft (20) on at least one of the elastic walking mechanisms (17) is connected to the drive shaft (15) via the bevel gear pair (16), and the outer end of the shaft (20) is connected to the walking wheel (19) via the second cross reversing device (24).

4. The pipe system dust removal device for pipeline laying according to claim 2, characterized in that: The rolling cleaning assembly (2) includes a hollow cylinder (25), a spiral blade (26) and a sealing plate (27). The hollow cylinder (25) is connected to the outer end of the drive shaft (15). The spiral blade (26) is disposed on the hollow cylinder (25) and the sealing plate (27) is disposed on the spiral blade (26).

5. The pipe system dust removal device for pipeline laying according to claim 1, characterized in that: The sealing sheet (27) includes a rubber strip (271) and a wear-resistant strip (272), the rubber strip (271) being disposed on the spiral plate (26) and the wear-resistant strip (272) being disposed on the rubber strip (271).

6. The pipe system dust removal device for pipeline laying according to claim 4, characterized in that: The scraper assembly (6) includes a central shaft (61), a torsion spring (62) and a scraper (63). The two ends of the central shaft (61) are disposed on opposite sides of the spiral blade (26). The scraper (63) is rotatably mounted on the central shaft (61) and slides against the inner wall of the pipe (4) through the torsion spring (62).

7. The pipe system dust removal device for pipeline laying according to claim 1, characterized in that: The blade of the scraper (63) is a flat blade or a serrated blade.

8. A method for dust removal in pipeline laying, characterized in that: Using the pipe dust removal device according to any one of claims 1-7, the steps are as follows: S1. Prepare a suitable sealing plate according to the diameter of the pipe to be cleaned, and install the sealing plate on the spiral plate with screws; S2. Invert the pipe dust collector into the pipe, clean the pipe opening, remove the pipe dust collector, and then insert the pipe dust collector back into the pipe. S3. In S2, along the forward direction of the pipe dust removal device, the annular air outlet at the head of the negative pressure equipment is tilted towards the inner wall of the pipe, and the air inlet at the tail of the rolling cleaning assembly and the annular air outlet of the negative pressure equipment form a cleaning airflow.

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