A cleaning device for a coated waste gas pipeline

Abstract

The present invention relates to the technical field of pipeline cleaning, and particularly relates to a cleaning device for a coated waste gas pipeline, including a rotary drive group; further including a fixed adjustment group, the fixed adjustment group is connected to the rotary drive group, the fixed adjustment group includes a positioning pipe detachably installed on the rotary drive group, and an adjustment component is connected to the positioning pipe. The multiple splicing cleaning groups adopted by the present invention can be spliced correspondingly according to the length of the pipeline to be cleaned, effectively improving the flexibility of the cleaning device in use, and the multiple splicing cleaning groups can be placed inside the pipeline during the splicing process, effectively reducing the working space required for the cleaning device to penetrate into the pipeline, facilitating the operation of the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning, and particularly to a cleaning device for a coated waste gas pipeline. Background Art

[0002] The waste gas pipeline is a system for collecting, transporting, and treating waste gas generated during industrial production processes. Such systems are applied in multiple industries, such as chemical industry, electronic manufacturing (especially coating processes), pharmaceuticals, etc.

[0003] After long-term use of the waste gas pipeline, dust and other particles contained in the waste gas will remain on the inner wall of the waste gas pipeline. Therefore, it is necessary to clean the inner wall of the waste gas pipeline. When the existing technology is used to clean the waste gas pipeline, the cleaning method of blowing with compressed air is usually adopted. A cleaning pipeline with through holes opened on the pipe wall is inserted into the waste gas pipeline and driven to rotate and reciprocate, and then nitrogen is introduced into the cleaning pipeline. The nitrogen sprays out from the through holes of the cleaning pipeline and cleans the inner wall of the waste gas pipeline. However, the existing cleaning pipelines are usually formed integrally. When cleaning a relatively long waste gas pipeline, the installation of the cleaning pipeline requires a relatively long working space, and the relatively long cleaning pipeline has a relatively heavy weight, which is not conducive to the operation of the operator. Moreover, in order to avoid the phenomenon that the relatively long cleaning pipeline bends in the waste gas pipeline, the existing technology is to weld a support frame on the surface of the cleaning pipeline. The size of the support frame is fixed and can only be used for waste gas pipelines of specific sizes, with low applicability.

[0004] Therefore, there is an urgent need to provide a pipeline cleaning device that can be adjusted correspondingly according to the diameter and length of the waste gas pipeline. Summary of the Invention

[0005] Based on this, it is necessary to provide a cleaning device for a coated waste gas pipeline, aiming to solve the problems generated when the existing cleaning equipment cleans the inner wall of the pipeline.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A cleaning device for a coated waste gas pipeline, comprising: a rotation driving group.

[0007] It further includes a fixing and adjusting group, the fixing and adjusting group is connected to the rotation driving group, the fixing and adjusting group includes a positioning pipe detachably installed on the rotation driving group, and an adjusting component is connected to the positioning pipe.

[0008] It further includes a splicing cleaning group. A plurality of the splicing cleaning groups are provided and can be disassembled and assembled with each other. The splicing cleaning group close to the positioning pipe is connected to the positioning pipe. The splicing cleaning group includes a cleaning pipe arranged at one end of the positioning pipe. A plurality of spiral-distributed air spraying holes are formed in the pipe wall of the cleaning pipe. The rotation driving group drives the positioning pipe and the cleaning pipe through which cleaning gas passes to rotate. The plurality of rotating air spraying holes spray out cleaning gas to clean the inner wall of the pipeline. A support scraping part for supporting the cleaning pipe and a sealing conduction part for sealing the connection between adjacent cleaning pipes are sequentially connected to the cleaning pipe. A guiding part is connected between the support scraping part and the cleaning pipe.

[0009] While the adjusting member adjusts the corresponding support scraping part, the adjacent support scraping parts are synchronously adjusted through the sealing conduction part.

[0010] The support scraping part includes a positioning member sleeved and installed on the outer wall of the cleaning pipe. A moving member slidably connected to the outer wall of the cleaning pipe is arranged on one side of the positioning member. Connecting rods are hinged to the relative ends of the moving member and the positioning member respectively. An inner wall scraping rod is hinged between the two connecting rods.

[0011] Preferably, the splicing cleaning group further includes a reset part connected to the cleaning pipe. A limiting member is installed at a position on the outer surface of the cleaning pipe away from the sealing conduction part.

[0012] Preferably, the adjusting member includes a threaded sleeve connected to the outer wall of the positioning pipe by means of threaded cooperation. A plurality of circumferentially distributed ejector rods are installed at one end of the threaded sleeve close to the cleaning pipe.

[0013] Preferably, the support scraping part further includes two symmetrically arranged connecting rods penetrating and installed on the moving member. The two connecting rods simultaneously slide through the positioning member. An abutting member is installed at one end of the two connecting rods away from the positioning member. An annular groove is formed at one end of the abutting member away from the moving member.

[0014] Preferably, the sealing conduction part includes a sliding ring slidably sleeved on the cleaning pipe and fixedly connected to the two connecting rods at the same time. A connecting spring is installed at one end of the sliding ring away from the connecting rod. A sealing ring is installed at one end of the connecting spring away from the sliding ring. Two push rods are slidably penetrated and connected to the sealing ring. The two push rods are fixedly connected to the sliding ring.

[0015] Preferably, the sealing conduction part further includes an annular installation groove formed on the inner ring surface of the sealing ring. A plurality of circumferentially distributed moving rods are penetrated and slidably connected to the groove wall of the annular installation groove away from the sliding ring. An extrusion ring is jointly installed at one ends of the plurality of moving rods located in the annular installation groove. A sealing sleeve is jointly installed between the extrusion ring and the annular installation groove.

[0016] Preferably, the guiding part includes a sliding groove formed at one end of the inner wall scraping rod close to the cleaning pipe. A sliding block is slidably connected in the sliding groove. One end of the sliding block close to the cleaning pipe is provided with a guiding rod, and the guiding rod slidably penetrates through the pipe wall of the cleaning pipe.

[0017] Preferably, the reset part includes a fixed seat installed on the pipe wall of the cleaning pipe. A reset spring is installed between the fixed seat and the moving part. A guide rail rod fixedly connected to the moving part is slidably penetrated through the fixed seat.

[0018] Preferably, an air inlet head is rotatably connected to one end of the positioning pipe far from the corresponding cleaning pipe. The air inlet head is fixedly connected and communicated with the flexible air inlet pipe.

[0019] Preferably, one end of the cleaning pipe close to the positioning pipe is fixedly connected to the end of the positioning pipe, and the inner wall of the other end is provided with internal threads. The outer wall of one end of the remaining cleaning pipes is provided with external threads, and the inner wall of the other end is provided with internal threads. Adjacent cleaning pipes are threadedly connected.

[0020] In summary, the present invention includes the following beneficial technical effects: 1. The multiple splicing cleaning groups adopted by the present invention can be spliced correspondingly according to the length of the pipeline to be cleaned, effectively improving the flexibility of the cleaning device. And the multiple splicing cleaning groups can be placed inside the pipeline during the splicing process, effectively reducing the working space required for the cleaning device to penetrate into the pipeline and facilitating the operation of the operator.

[0021] 2. The fixed adjustment group adopted by the present invention cooperates with the multiple splicing cleaning groups, and can adjust the support scraping parts in the multiple splicing cleaning groups according to the size of the pipeline inner diameter at the same time, ensuring that the cleaning pipes located inside the pipeline are in a centered state, avoiding the phenomenon that the spliced pipeline bends due to its long length, and the adjustable support scraping parts can improve the applicability of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 Shows a three-dimensional structural schematic diagram of the present invention.

[0024] Figure 2 Shows a front view of the present invention.

[0025] Figure 3 Shows a structural schematic diagram of the fixed adjustment group, part of the cleaning pipe and the air injection holes of the present invention.

[0026] Figure 4 shows a schematic structural view of the splicing cleaning group of the present invention.

[0027] Figure 5 shows a cross-sectional view of the splicing cleaning group of the present invention.

[0028] Figure 6 shows Figure 5 an enlarged view of area A in

[0029] Among them, the above-mentioned drawings include the following reference numerals: 1, rotation drive group; 10, rotation module; 11, main motor; 2, fixed adjustment group; 20, positioning tube; 21, adjustment component; 210, threaded sleeve; 211, ejector rod; 3, splicing cleaning group; 30, cleaning tube; 31, air jet hole; 32, support scraping part; 320, positioning part; 321, moving part; 322, connecting rod; 323, inner wall scraping rod; 324, connecting rod; 325, abutting part; 326, annular groove; 33, sealing conduction part; 330, sliding ring; 331, connecting spring; 332, sealing ring; 333, push rod; 334, annular installation groove; 335, moving rod; 336, extrusion ring; 337, sealing sleeve; 34, guiding part; 340, sliding groove; 341, sliding block; 342, guiding rod; 35, reset part; 350, fixed seat; 351, reset spring; 352, guide rail rod; 36, limiting part; 4, air inlet head. Specific Embodiments

[0030] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] Refer to Figure 1 and Figure 2 , a cleaning device for a coating waste gas pipeline, including a rotation drive group 1, the rotation drive group 1 includes a rotation module 10, and a main motor 11 is connected to the rotation module 10.

[0032] During specific operation, before operation, the rotation module 10 is connected to the base. The rotation module 10 is an existing mechanism for clamping and rotating pipe fittings. The base is connected to an existing reciprocating moving device. The main motor 11 is an existing stepper motor and is connected to an external power supply.

[0033] Refer to Figures 1-3, the cleaning device for the coated waste gas pipeline further includes a fixing and adjusting group 2, the fixing and adjusting group 2 is connected to the rotary driving group 1, the fixing and adjusting group 2 includes a positioning pipe 20 detachably installed on the rotary driving group 1, and the positioning pipe 20 is detachably connected to the rotary module 10.

[0034] During specific operation, after the rotary driving group 1 is fixed, the positioning pipe 20 and a sealing cover (not shown in the figure) are penetrated and connected, and then penetrated into the rotary driving group 1.

[0035] Refer to Figure 1 , Figure 2 and Figure 4 , the cleaning device for the coated waste gas pipeline further includes a splicing and cleaning group 3, there are multiple splicing and cleaning groups 3 and they can be disassembled and assembled with each other, the splicing and cleaning group 3 close to the positioning pipe 20 is connected to the positioning pipe 20, the splicing and cleaning group 3 includes a cleaning pipe 30 arranged at one end of the positioning pipe 20, one end of the cleaning pipe 30 close to the positioning pipe 20 is fixedly connected to the end of the positioning pipe 20 and the inner wall of the other end is provided with internal threads, one end of the cleaning pipe 30 far from the positioning pipe 20 is in a closed state, the outer wall of the other end is provided with external threads, and the outer wall of one end of the remaining cleaning pipes 30 is provided with external threads, and the inner wall of the other end is provided with internal threads, and adjacent cleaning pipes 30 are threadedly connected.

[0036] During specific operation, according to the length of the pipeline to be cleaned, select the corresponding number of cleaning pipes 30 and splice the multiple cleaning pipes 30 together. It should be noted that when initially splicing, select the cleaning pipe 30 with one end in a closed state to be spliced with another cleaning pipe 30, and after each splicing, the two spliced cleaning pipes 30 can be first inserted into the pipeline, so as to reduce the placement space required for the cleaning pipes 30 to enter the long pipeline. Repeat the steps of splicing two cleaning pipes 30 together and inserting them into the pipeline until all the cleaning pipes 30 are spliced and enter the pipeline, then threadedly connect the cleaning pipe 30 at the inlet end of the pipeline with the cleaning pipe 30 on the positioning pipe 20, and then fix and limit the positioning pipe 20 through the rotary driving group 1.

[0037] Refer to Figure 1 and Figure 3 , an adjusting component 21 is connected to the positioning pipe 20, the adjusting component 21 includes a threaded sleeve 210 connected to the outer wall of the positioning pipe 20 by means of threaded cooperation, and a plurality of circumferentially distributed ejector rods 211 are installed at one end of the threaded sleeve 210 close to the cleaning pipe 30.

[0038] Refer to Figure 1 , Figure 4 and Figure 5, a plurality of jet holes 31 distributed in a spiral are formed in the wall of the cleaning pipe 30. A support scraping part 32 for supporting the cleaning pipe 30 and a sealing conduction part 33 for sealing the connection between adjacent cleaning pipes 30 are successively connected to the cleaning pipe 30. The support scraping part 32 includes a positioning member 320 sleeved and installed on the outer wall of the cleaning pipe 30. A moving member 321 slidably connected to the outer wall of the cleaning pipe 30 is arranged on one side of the positioning member 320. Connecting rods 322 are hinged to the opposite ends of the moving member 321 and the positioning member 320 respectively. An inner wall scraping rod 323 is hinged between the two connecting rods 322.

[0039] Refer to Figure 1 , Figure 4 and Figure 5 , the support scraping part 32 further includes two connecting rods 324 symmetrically and penetratingly installed on the moving member 321. The two connecting rods 324 simultaneously slide through the positioning member 320. An abutting member 325 is installed at the ends of the two connecting rods 324 far away from the positioning member 320. An annular groove 326 is formed at the end of the abutting member 325 far away from the moving member 321.

[0040] Specifically, the support scraping parts 32 on a plurality of spliced cleaning pipes 30 are distributed in a spiral. When the plurality of cleaning pipes 30 enter the pipeline, the support scraping parts 32 are driven into the pipeline. Then, according to the size of the inner diameter of the pipeline, the adjusting component 21 is driven to adjust the support range of the corresponding support scraping part 32 so that the corresponding cleaning pipe 30 is restricted in the middle of the pipeline. The specific working steps are as follows: rotate the threaded sleeve 210, and the threaded sleeve 210 drives a plurality of ejector rods 211 to move towards the corresponding abutting member 325. The abutting member 325 can be a plate-shaped or frame-shaped structure, which is not uniquely limited here. Until the plurality of ejector rods 211 enter the corresponding annular groove 326, then the plurality of ejector rods 211 continue to push the abutting member 325. The abutting member 325 drives the two connecting rods 324 to move. The two connecting rods 324 drive the corresponding moving member 321 to slide on the cleaning pipe 30. The moving member 321 can be a plate-shaped, ring-shaped or frame-shaped structure, which is not uniquely limited here. The moving member 321 drives the corresponding connecting rod 322 to gradually tilt and push the inner wall scraping rod 323 and the other connecting rod 322. The two connecting rods 322 and the inner wall scraping rod 323 form a three-link structure. The positioning member 320 plays a role in limiting the other connecting rod 322. The positioning member 320 can be a plate-shaped, ring-shaped or frame-shaped structure, which is not uniquely limited here. During the process of the connecting rod 322 gradually tilting, the inner wall scraping rod 323 is driven to move towards the inner wall of the pipeline and fit with it. Then stop rotating the threaded sleeve 210. The adjustable inner wall scraping rod 323 can be adjusted correspondingly according to the inner diameter of the pipeline, effectively increasing the application occasions of the cleaning device. A brush body (not shown in the figure) for cleaning the inner wall of the pipeline can be arranged at the end of the inner wall scraping rod 323 close to the inner wall of the pipeline.

[0041] Refer toFigure 1 , Figure 4 and Figure 5 , a guiding part 34 is connected between the support scraping part 32 and the cleaning pipe 30. The guiding part 34 includes a sliding groove 340 formed at one end of the inner wall scraping rod 323 close to the cleaning pipe 30. A sliding block 341 is slidably connected in the sliding groove 340. One end of the sliding block 341 close to the cleaning pipe 30 is provided with a guiding rod 342, and the guiding rod 342 slidably penetrates through the pipe wall of the cleaning pipe 30.

[0042] During specific operation, when the inner wall scraping rod 323 moves, it drives the sliding groove 340 to move. The sliding groove 340 drives the guiding rod 342 to move on the pipe wall of the cleaning pipe 30 through the sliding block 341, realizing the function of guiding the movement of the inner wall scraping rod 323. At the same time, the sliding groove 340 and the sliding block 341 slide relatively, ensuring that the inner wall scraping rod 323 is always parallel to the cleaning pipe 30 and the pipeline during the movement process.

[0043] Refer to Figure 1 , Figure 4 and Figure 5 , the sealing and conducting part 33 includes a sliding ring 330 slidably sleeved on the cleaning pipe 30 and fixedly connected to the two connecting rods 324 at the same time. One end of the sliding ring 330 away from the connecting rod 324 is provided with a connecting spring 331. One end of the connecting spring 331 away from the sliding ring 330 is provided with a sealing ring 332. Two push rods 333 are slidably penetrated through the sealing ring 332, and the two push rods 333 are fixedly connected to the sliding ring 330.

[0044] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the sealing and conducting part 33 further includes an annular installation groove 334 formed on the inner ring surface of the sealing ring 332. A plurality of circumferentially distributed moving rods 335 are penetrated through and slidably connected to the groove wall of the annular installation groove 334 away from the sliding ring 330. One ends of the plurality of moving rods 335 located in the annular installation groove 334 are jointly provided with an extrusion ring 336, and a sealing sleeve 337 is jointly installed between the extrusion ring 336 and the annular installation groove 334.

[0045] Refer to Figure 1 and Figure 5 , a limiting part 36 is installed at a position on the outer surface of the cleaning pipe 30 away from the sealing and conducting part 33.

[0046] During specific operation, while the adjusting member 21 adjusts the corresponding support scraping portion 32, the adjacent support scraping portions 32 are synchronously adjusted through the sealing conduction portion 33. The specific working steps are as follows: while the two connecting rods 324 corresponding to the adjusting member 21 move, the corresponding sliding rings 330 are pushed. The sliding rings 330 are stressed and push the connecting springs 331. The connecting springs 331 have a certain elastic strength. The connecting springs 331 drive the sealing rings 332 to move to the connection position of the two cleaning pipes 30. The sealing rings 332 drive the sealing sleeves 337 to move to the connection position of the two cleaning pipes 30. At the same time, the sealing rings 332 drive a plurality of moving rods 335 to fit with the limit members 36 on the adjacent cleaning pipes 30. The limit members 36 can be plate-shaped, ring-shaped or frame-shaped structures, which are not uniquely defined here. Subsequently, the connecting springs 331 continue to push the sealing rings 332. The limit members 36 limit the moving rods 335. The sealing rings 332 and the moving rods 335 have relative displacement and push the sealing sleeves 337 through the extrusion rings 336. The sealing sleeves 337 are stressed and deformed and closely adhere to the seam at the connection position of the two cleaning pipes 30, thereby increasing the connection position of the two cleaning pipes 30. At the same time, external support is provided for the connection position of the two cleaning pipes 30, improving the bending resistance strength of the connection position of the two cleaning pipes 30.

[0047] After the sealing sleeve 337 seals the seam at the connection position of the two cleaning pipes 30, the sliding ring 330 continues to squeeze the connecting spring 331, and at the same time drives the two push rods 333 to move relative to the sealing ring 332. The two push rods 333 push the abutting members 325 on the next cleaning pipe 30, and then repeat the adjustment steps of the previous support scraping portion 32. In this way, the function of synchronously adjusting a plurality of support scraping portions 32 is realized, ensuring that a plurality of cleaning pipes 30 are located in the middle of the pipeline, avoiding the phenomenon that a plurality of cleaning pipes 30 are bent, and improving the adjustment efficiency of a plurality of support scraping portions 32.

[0048] Refer to Figure 1 、 Figure 4 and Figure 5 As shown in

[0049] During specific operation, when the support scraping portion 32 is adjusted, the moving member 321 simultaneously squeezes the return spring 351. The squeezed return spring 351 is used to reset the moving member 321, thereby realizing the function of resetting the connecting rod 322 and the inner wall scraping rod 323, and avoiding affecting the removal of the cleaning pipe 30.

[0050] Refer toFigure 1 and Figure 2 One end of the positioning pipe 20 away from the corresponding cleaning pipe 30 is rotatably connected with an air inlet head 4, and the air inlet head 4 is fixedly connected and communicated with the flexible air inlet pipe.

[0051] During specific operation, after the adjustment of multiple support scraping parts 32 is completed, the sealing cover is sealed with the pipeline inlet end, and then the air inlet head 4 is connected to the end of the positioning pipe 20. Subsequently, the flexible air inlet pipe is connected to an existing air pump. Then, the air pump, the main motor 11 and the reciprocating moving device are started simultaneously. The air pump passes the cleaning gas (mainly nitrogen) into the positioning pipe 20 and multiple cleaning pipes 30 through the flexible air inlet pipe and the air inlet head 4. The main motor 11 drives the positioning pipe 20 to rotate through the rotation driving group 1. The positioning pipe 20 drives multiple cleaning pipes 30 to rotate. The cleaning pipes 30 drive multiple air spraying holes 31 to rotate. The cleaning gas sprayed by the multiple rotating air spraying holes 31 cleans the inner wall of the pipeline. Multiple cleaning pipes 30 simultaneously drive the inner wall scraping rod 323 to rotate through the positioning part 320 and the guiding part 34, realizing the function of further cleaning the inner wall of the pipeline, effectively improving the cleaning effect of the inner wall of the pipeline. The reciprocating moving device drives the positioning pipe 20 and multiple cleaning pipes 30 to reciprocate in the pipeline, effectively increasing the cleaning range of the multiple cleaning pipes 30 and the support scraping parts 32, and avoiding the area where the inner wall of the pipeline is not cleaned. After the multiple cleaning pipes 30 complete the cleaning of the inner wall of the pipeline, the air pump, the main motor 11 and the reciprocating moving device are turned off, and then the multiple cleaning pipes 30 and the positioning pipe 20 are removed from the pipeline, and the work is ended.

[0052] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0053] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A cleaning device for a coated waste gas pipeline, including a rotary drive group, characterized in that: A fixed adjustment group, connected to the rotary drive group. The fixed adjustment group includes a positioning pipe detachably installed on the rotary drive group, and an adjustment component is connected to the positioning pipe; A splicing cleaning group, provided with multiple ones and can be disassembled and assembled with each other. The splicing cleaning group close to the positioning pipe is connected to the positioning pipe. The splicing cleaning group includes a cleaning pipe arranged at one end of the positioning pipe. A plurality of spiral distribution spray holes are opened on the pipe wall of the cleaning pipe. The rotary drive group drives the positioning pipe and the cleaning pipe through which the cleaning gas passes to rotate, and the cleaning gas is sprayed out from a plurality of rotating spray holes to clean the inner wall of the pipeline. A support scraping part for supporting the cleaning pipe and a sealing conduction part for sealing the connection between adjacent cleaning pipes are successively connected to the cleaning pipe. A guiding part is connected between the support scraping part and the cleaning pipe; While the adjustment component adjusts the corresponding support scraping part, the adjacent support scraping parts are synchronously adjusted through the sealing conduction part; The support scraping part includes a positioning part sleeved on the outer wall of the cleaning pipe. A moving part slidably connected to the outer wall of the cleaning pipe is arranged on one side of the positioning part. Connecting rods are hinged to the opposite ends of the moving part and the positioning part respectively, and an inner wall scraping rod is hinged between the two connecting rods; The adjustment component includes a threaded sleeve connected to the outer wall of the positioning pipe by means of threaded cooperation. A plurality of circumferentially distributed ejector rods are installed at one end of the threaded sleeve close to the cleaning pipe; The support scraping part further includes two connecting rods symmetrically and penetratingly installed on the moving part. The two connecting rods simultaneously slide through the positioning part. At one end of the two connecting rods away from the positioning part, a butting part is installed at the same time. An annular groove is opened at one end of the butting part away from the moving part; When a plurality of cleaning pipes enter the pipeline interior, the support scraping part is driven to enter the pipeline interior at the same time. According to the size of the pipeline inner diameter, the adjustment component is driven to adjust the support range of the corresponding support scraping part, so that the corresponding cleaning pipe is restricted in the middle of the pipeline. Rotating the threaded sleeve drives a plurality of ejector rods to move towards the corresponding butting part until the plurality of ejector rods enter the corresponding annular grooves. Subsequently, the plurality of ejector rods continue to push the butting part. The butting part drives the two connecting rods to move. The two connecting rods drive the moving part to slide on the cleaning pipe. The moving part drives the connecting rod to gradually incline and push the inner wall scraping rod and the other connecting rod. The two connecting rods and the inner wall scraping rod form a triple-link structure. The positioning part plays a role in limiting the other connecting rod. During the process of the connecting rod gradually inclining, the inner wall scraping rod is driven to move towards and fit with the pipeline inner wall. Then stop rotating the threaded sleeve, and the adjustable inner wall scraping rod can be adjusted according to the pipeline inner diameter.

2. The cleaning device for a coated exhaust gas pipeline according to claim 1, wherein: The splicing cleaning group further includes a reset part connected to the cleaning pipe, and a limiting part is installed at a position on the outer surface of the cleaning pipe away from the sealing conduction part.

3. A cleaning device for a coated waste gas pipeline according to claim 1, characterized in that: The sealing conduction part includes a sliding ring slidably sleeved on the cleaning pipe and fixedly connected to the two connecting rods at the same time. A connecting spring is installed at one end of the sliding ring away from the connecting rod. A sealing ring is installed at one end of the connecting spring away from the sliding ring. Two push rods are slidably penetrated through the sealing ring, and the two push rods are fixedly connected to the sliding ring.

4. The cleaning device for a coated waste gas pipeline according to claim 3, characterized in that: The sealing and conducting part further includes an annular installation groove formed on the inner ring surface of the sealing ring. A plurality of circumferentially distributed moving rods are slidably connected through the groove wall of the annular installation groove far from the sliding ring. A pressing ring is commonly installed at one ends of the plurality of moving rods located in the annular installation groove. A sealing sleeve is commonly installed between the pressing ring and the annular installation groove.

5. The cleaning device for a coated waste gas pipeline according to claim 1, characterized in that: The guiding part includes a sliding groove formed at one end of the inner wall scraping rod close to the cleaning pipe. A sliding block is slidably connected in the sliding groove. A guiding rod is installed at one end of the sliding block close to the cleaning pipe. The guiding rod slidably penetrates through the pipe wall of the cleaning pipe.

6. The cleaning device for a coated waste gas pipeline according to claim 2, wherein: The reset part includes a fixed seat installed on the pipe wall of the cleaning pipe. A reset spring is installed between the fixed seat and the moving part. A guide rail rod fixedly connected with the moving part is slidably penetrated through the fixed seat.

7. The cleaning device for a coated waste gas pipeline according to claim 1, characterized in that: One end of the positioning pipe far from the corresponding cleaning pipe is rotatably connected with an air inlet head. The air inlet head is fixedly connected and communicated with the flexible air inlet pipe.

8. The cleaning device for a coated waste gas pipeline according to claim 1, characterized in that: One end of the cleaning pipe close to the positioning pipe is fixedly connected with the end of the positioning pipe, and the inner wall of the other end is provided with internal threads. One end of the cleaning pipe far from the positioning pipe is in a closed state, and the outer wall of the other end is provided with external threads. The outer wall of one end of the remaining cleaning pipes is provided with external threads, and the inner wall of the other end is provided with internal threads. Adjacent cleaning pipes are threadedly connected.

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