A pipe unblocking device
By designing the guide section and scraping section of the pipeline dredging device, and utilizing high-pressure water flow and the rotation of the scraping chain for cleaning, the problem of stubborn scale buildup inside the pipelines of thermal power plants was solved, improving the cleaning effect and service life of the pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DATANG JIXI THERMAL POWER CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies are insufficient to effectively treat stubborn scale buildup in thermal power plant pipelines, affecting transportation efficiency and service life.
A pipe cleaning device was designed, including a guide section, a scraping section, and a scraping chain. The device uses water flow provided by a high-pressure water pump to flush and scrape the pipe wall through the nozzles of the guide section and the scraping section. Combined with the rotation of the scraping chain, the cleaning effect is improved.
Effectively removes stubborn scale, improving pipeline transportation efficiency and service life.
Smart Images

Figure CN224405988U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline dredging technology and relates to a pipeline dredging device. Background Technology
[0002] The operation of thermal power plants involves numerous liquid transport pipelines. During use, scale can form inside these pipelines, and pipelines transporting other liquids may also develop crystals on their inner walls, impacting transport efficiency, heat conduction efficiency, and lifespan. Currently, high-pressure water jets are primarily used for flushing, but these methods are ineffective against stubborn scale buildup. Utility Model Content
[0003] To address the aforementioned problems, this utility model proposes a pipeline unblocking device, which effectively solves the problems in the prior art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A pipe unblocking device, comprising:
[0006] The guide portion is conical in shape, and at least three first nozzles are arranged in a circumferential array on the sidewall of the guide portion, with the first nozzles facing obliquely to the rear.
[0007] A first support portion is fixedly installed at the bottom end of the guide portion;
[0008] The scraping part is rotatably mounted on the end of the first support part away from the guide part. The scraping part has at least three second nozzles arranged in a circumferential array on its side. The second nozzles are arranged tangentially along the scraping part.
[0009] The second support portion is located at the end of the scraping portion away from the first support portion and is fixedly connected to the first support portion;
[0010] The first and second support portions are each hinged with at least three support legs, which are arranged in a circumferential array. Support springs are provided between the first and second support portions and the support legs.
[0011] The travel wheels are rotatably mounted on all the support legs.
[0012] A scraping chain, wherein a plurality of the scraping chains are fixedly installed on the outside of the scraping section in a circumferential array;
[0013] A water supply pipe, the first end of which is connected to a high-pressure water pump, and the second end of which is connected to the guide section and the scraping section.
[0014] Optionally, two scraping sections are provided, and the second nozzles of the scraping sections are in opposite directions.
[0015] Optionally, the scraping chain includes multiple detachable links, and a tapered protrusion is provided at the end of each link away from the spray direction of the second nozzle.
[0016] Optionally, it also includes a take-up and put-down component, the take-up and put-down component comprising:
[0017] The fixing tube has multiple mounting grooves arranged in a circumferential array on its side.
[0018] The take-up and release wheels are rotatably mounted in the mounting slot, and at least one of the take-up and release wheels is connected to a drive motor;
[0019] The snap-fit legs are arranged in a circumferential array and hinged to the outside of the fixed tube. In use, the end of the snap-fit leg away from the fixed tube is installed at the inlet end of the pipe.
[0020] The water supply pipe passes through the fixed pipe, and the retractor wheel is attached to the surface of the water supply pipe.
[0021] Optionally, the end of the connecting leg away from the fixed tube is hinged with a mounting bolt, and the mounting bolt is threaded with a nut.
[0022] Optionally, the front end of the guide section is provided with a light and a camera, and the guide section is provided with a power supply and signal transmission module.
[0023] Compared with existing technologies, this utility model has the following advantages: The guiding part is provided with a first nozzle facing obliquely to the rear. The reaction force of the first nozzle flushes away the scale while propelling it forward. The scraping part is provided with a second nozzle arranged tangentially along the scraping part, causing the scraping part to rotate and drive the scraping chain to rotate, knocking and scraping the scale on the inner wall of the pipeline. By setting the first nozzle to flush away the scale and by using the rotating scraping part to knock and scrape the structure, the cleaning effect on stubborn scale is improved. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0025] Figure 2 This is a schematic diagram of the structure of the receiving and dispensing part in an embodiment of this utility model.
[0026] Reference numerals: 1. Guide section; 11. First nozzle; 21. First support section; 22. Second support section; 23. Support leg; 231. Support spring; 24. Traveling wheel; 3. Scraping section; 31. Second nozzle; 4. Scraping chain; 5. Water supply pipe; 6. Retraction and deployment component; 61. Fixing pipe; 62. Retraction and deployment wheel; 63. Snap-fit leg; 64. Mounting bolt; 7. Lighting lamp and camera. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1 This utility model discloses a pipe unblocking device, comprising a guide portion 1, which is conical in shape. At least three first nozzles 11 are arranged in a circumferential array on the side wall of the guide portion 1, with the first nozzles 11 facing obliquely rearward. A first support portion 21 is fixedly installed at the bottom end of the guide portion 1. A scraping portion 3 is rotatably installed at the end of the first support portion 21 away from the guide portion 1. At least three second nozzles 31 are arranged in a circumferential array on the side of the scraping portion 3, with the second nozzles 31 arranged tangentially along the scraping portion 3. The first support portion 21 is fixedly connected to the second support portion. 22. The second support part 22 is located at the end of the scraping part 3 away from the first support part 21. The first support part 21 and the second support part 22 are connected by at least three support legs 23. The support legs 23 are arranged in a circumferential array. Support springs 231 are provided between the first support part 21, the second support part 22 and the support legs 23. The support legs 23 are rotatably mounted with travel wheels 24. Multiple scraping chains 4 are fixedly installed in a circumferential array on the outer side of the scraping part 3. The guide part 1 is connected to the scraping part 3 by a water supply pipe 5. The water supply pipe 5 is connected to a high-pressure water pump.
[0029] Specifically, the water supply pipe 5 is connected to a high-pressure water pump, which supplies water to the guide section 1 and the scraping section 3 through the water supply pipe 5. The guide section 1 is equipped with a first nozzle 11 facing obliquely to the rear. The reaction force of the first nozzle 11 flushes away the scale while propelling the guide section forward. The scraping section 3 is equipped with a second nozzle 31 arranged tangentially to the scraping section 3, causing the scraping section 3 to rotate. This rotation drives the scraping chain 4 to rotate, striking and scraping the scale on the inner wall of the pipe. The first support section 21 and the second support section 22 are supported on the inner wall of the pipe by the support legs 23 and the traveling wheels 24, providing reverse support for the rotation of the scraping section 3 and preventing the scraping section 3 from causing the entire system to rotate.
[0030] In this way, by setting the first nozzle 11 to flush away the scale, and by using the rotating scraping part 3 to knock and scrape the structure, the cleaning effect on stubborn scale is improved.
[0031] In some feasible embodiments, the guide part 1 is conical, and a through hole is provided on the side of the guide part 1. An inclined tube is provided in the through hole to form a first nozzle 11. The inside of the guide part 1 is hollow. The bottom of the guide part 1 is connected to an installation tube through a flange structure. The installation tube is a rigid tube. The first support part 21 and the second support part 22 are sleeved on the installation tube and connected to it by a key. The first support part 21 and the second support part 22 are both cylindrical. The support leg 23 is rectangular. The two ends of the support spring 231 are hinged to the support leg 23 and the first support part 21 or the second support part 22.
[0032] The scraping part 3 is a hollow ring. The inner opening of the scraping part 3 is connected to the installation pipe. The scraping part 3 has stepped bends at both ends. Sealed bearings are installed at the stepped bends and are sleeved on the installation pipe. A water outlet hole is opened on the side of the installation pipe between the two sealed bearings. Rotary sealing rings are set between the two ends of the scraping part 3 and the installation pipe and are fixed by the rings. The rings are fixed to the scraping part 3 by an array of bolts.
[0033] The first support part 21, the second support part 22, and the scraping part 3 are sleeved on the installation pipe, and the distance and position of each other are fixed by the sleeve. The end of the second support part 22 away from the first support part 21 is provided with a retaining spring for axial fixation. The installation pipe is connected to the water supply pipe 5.
[0034] As a specific embodiment of the pipeline unblocking device provided in the application, the scraping section 3 is provided in two parts, and the second nozzle 31 of the scraping section 3 is in opposite directions.
[0035] Overall, by setting two scraping parts 3 with opposite rotation directions, it is easier to counteract the reaction force during rotation and reduce the possibility of the scraping parts 3 causing the whole to rotate.
[0036] As another specific embodiment of the pipeline unblocking device provided in the application, the scraping chain 4 includes multiple detachable chain links, and a conical protrusion is provided at the end of the chain link away from the spray direction of the second nozzle 31.
[0037] Depending on the specific application scenario, the design incorporates detachable chain links, allowing for the installation of scraping chains of varying lengths based on pipe diameters, thus reducing damage to the pipe walls. The addition of tapered protrusions enhances the scraping ability against scale buildup.
[0038] In some feasible methods, the scraping chain 4 is a commonly used chain shape, with the links connected by bolts or rivets.
[0039] As one specific embodiment of the pipe dredging device provided in the application, it also includes a retracting component 6. Please refer to [link / reference needed]. Figure 2 The take-up and release component 6 includes a fixed tube 61, take-up and release wheels 62, and snap-fit legs 63. The fixed tube 61 has multiple mounting slots arranged in a circumferential array on its side. The take-up and release wheels 62 are rotatably mounted in the mounting slots. At least one of the take-up and release wheels 62 is connected to a drive motor. Multiple snap-fit legs 63 are hingedly mounted in a circumferential array on the outer side of the fixed tube 61. In use, the end of the snap-fit leg 63 away from the fixed tube 61 is installed at the pipe inlet end. The water supply pipe 5 passes through the fixed tube 61, and the take-up and release wheels 62 are attached to the surface of the water supply pipe 5.
[0040] Based on the specific usage environment, after setting up the take-up and release component 6, the take-up and release wheel 62 driven by the drive motor is used to control the take-up and release of the water supply pipe 5, thereby controlling the process of dredging the pipe and improving the degree of automation.
[0041] In some feasible methods, the fixed tube 61 is a round tube, and bearing seats are fixedly installed on both sides of the mounting groove. The take-up and take-down wheels 62 are installed in the bearing seats. The snap-fit leg 63 is a rectangular rod. To facilitate connection with the pipeline, a mounting bolt 64 is hinged to the end of the snap-fit leg 63 away from the fixed tube 61. The mounting bolt 64 is threaded with a nut and is installed on the flange at the end of the pipeline through the mounting bolt 64.
[0042] As one specific embodiment of the pipe unblocking device provided in the application, please refer to Figure 1 The front end of the guide section 1 is equipped with a light and a camera 7, and the guide section 1 is equipped with a power supply and signal transmission module.
[0043] It should be understood that the installation of lighting and camera 7 facilitates observation of the internal conditions of the pipeline.
[0044] In some feasible configurations, the power supply provides power to the lighting and camera 7, and the signal transmission module can be a Wi-Fi module to facilitate real-time acquisition of images inside the pipe. The guide section 1 is divided into a conical section and a cylindrical section. The cylindrical section is a closed hollow structure connected to the water supply pipe 5. The lighting and camera 7 are partially installed in the conical section. A transparent cover is provided at the front of the conical section, and the conical section and the cylindrical section are connected by a threaded seal.
[0045] 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 unblocking device, characterized in that, include: The guide part (1) is conical, and the guide part (1) has at least three first nozzles (11) arranged in a circumferential array on its sidewall, with the first nozzles (11) facing obliquely to the rear. The first support part (21) is fixedly installed at the bottom end of the guide part (1); The scraping part (3) is rotatably mounted on the end of the first support part (21) away from the guide part (1). The scraping part (3) has at least three second nozzles (31) arranged in a circumferential array on its side. The second nozzles (31) are arranged tangentially along the scraping part (3). The second support part (22) is located at the end of the scraping part (3) away from the first support part (21) and is fixedly connected to the first support part (21); Support legs (23), at least three of the support legs (23) are hinged to the first support part (21) and the second support part (22), the support legs (23) are arranged in a circumferential array, and a support spring (231) is provided between the first support part (21), the second support part (22) and the support legs (23); The travel wheel (24) is rotatably mounted on each of the support legs (23). A scraping chain (4), and a plurality of scraping chains (4) are fixedly installed on the outside of the scraping part (3) in a circumferential array; Water supply pipe (5), the first end of which is connected to a high-pressure water pump, and the second end of which is connected to the guide part (1) and the scraping part (3).
2. The pipeline unblocking device according to claim 1, characterized in that: Two scraping sections (3) are provided, and the second nozzles (31) of the scraping sections (3) are in opposite directions.
3. The pipeline unblocking device according to claim 1, characterized in that: The scraping chain (4) includes multiple detachable links, and a tapered protrusion is provided at the end of the link away from the spray direction of the second nozzle (31).
4. The pipeline unblocking device according to claim 1, characterized in that: It also includes a take-up and put-down component (6), which includes: The fixing tube (61) has multiple mounting grooves arranged in a circumferential array on its side. Take-up and release wheels (62), the take-up and release wheels (62) are rotatably mounted in the mounting slot, and at least one of the take-up and release wheels (62) is connected to a drive motor; The snap-fit legs (63) are arranged in a circumferential array and hinged to the outside of the fixed tube (61). In use, the end of the snap-fit legs (63) away from the fixed tube (61) is installed at the inlet end of the pipeline. The water supply pipe (5) passes through the fixed pipe (61), and the take-up and release wheel (62) is attached to the surface of the water supply pipe (5).
5. A pipe unblocking device according to claim 4, characterized in that: The end of the snap-fit leg (63) away from the fixed tube (61) is hinged with a mounting bolt (64), and the mounting bolt (64) is threaded with a nut.
6. A pipe unblocking device according to claim 1, characterized in that: The front end of the guide section (1) is provided with a lighting lamp and a camera (7), and the guide section (1) is provided with a power supply and signal transmission module.