A pipeline inner wall spraying system

Abstract

The application discloses a pipeline inner wall spraying system and relates to the technical field of pipeline inner wall spraying. The pipeline inner wall spraying system comprises a main pipe, four sealing parts, a sand blasting assembly, a cleaning assembly, a spraying assembly, a pressure stabilizing assembly, a driving assembly and a rotating assembly. The main pipe is used for extending into a pipeline to be processed. The four sealing parts are arranged at intervals on the main pipe. The four sealing parts are used for being matched in the pipeline to be processed and dividing the inner cavity of the processed pipeline into a first cavity, a second cavity and a third cavity. The sand blasting assembly, the cleaning assembly and the spraying assembly are sequentially arranged in the first cavity, the second cavity and the third cavity and are driven by the driving assembly and the rotating assembly to realize the pretreatment and the spraying operation of the whole inner wall of the pipeline. The pressure stabilizing assembly is used for extracting gas and impurities in the first cavity, the second cavity and the third cavity. The pipeline inner wall spraying system can integrate the pretreatment and the spraying, realizes the continuous operation of the pretreatment and the spraying, has high efficiency, low processing cost and is environmentally friendly and healthy.

Description

Technical Field

[0001] This invention relates to the field of pipeline inner wall spraying technology, and more specifically, to a pipeline inner wall spraying system. Background Technology

[0002] The corrosion problem of metal pipes seriously restricts their application and development, and protective measures are often required for the inner wall of the pipe, such as coating the inner wall with anti-corrosion and non-stick coatings.

[0003] In related technologies, spraying equipment for the inner walls of small-diameter metal pipes is mostly long-handled spray guns. During the spraying process, operators must hold the long-handled spray gun to spray the inner wall of the metal pipe. Due to the length and weight of the long-handled spray gun, it is difficult to hold it, and it is difficult to keep the gun body aligned with the pipe axis during the actual spraying process. This results in uneven paint spraying, large fluctuations in the thickness of the fired coating, and many coating defects. Furthermore, it is impossible to manually operate the spraying equipment when spraying the inner walls of curved pipes with bends, making the operation very difficult.

[0004] In addition, to ensure the adhesion of the coating, the inner wall of the pipe usually needs to be pre-treated, including degreasing and rust removal. In related technologies, spraying systems often employ a pre-treatment method followed by spraying, resulting in low production efficiency and increased labor costs. Furthermore, the pollution caused by pre-treatment not only affects the environment but also the health of personnel. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, this invention proposes a pipe inner wall spraying system that integrates pretreatment and spraying, enabling continuous operation of pretreatment and spraying. While ensuring the efficiency of pretreatment and spraying, the system has low processing costs and is environmentally friendly and healthy.

[0007] The pipe inner wall spraying system of this invention includes: The main pipe, at least in part, is used to extend into the pipe to be processed; Four sealing parts are spaced apart in the main pipe. The four sealing parts are used to cooperate in the pipe to be processed and divide the inner cavity of the processed pipe into a first cavity, a second cavity and a third cavity along the feed direction of the main pipe. A sandblasting assembly, comprising a first delivery pipe and a first nozzle, wherein the first delivery pipe is disposed within the main pipe and connected to the first nozzle, and the first nozzle is disposed in the first cavity and performs sandblasting on the set position when the first cavity passes through the set position of the pipe to be processed. A cleaning assembly, comprising a second delivery pipe and a second nozzle, wherein the second delivery pipe is disposed within the main pipe and connected to the second nozzle, and the second nozzle is disposed in the second cavity and sprays gas at the set position through the second cavity; A spraying assembly, comprising a third delivery pipe and a third nozzle, wherein the third delivery pipe is disposed within the main pipe and connected to the third nozzle, and the third nozzle is disposed in the third cavity and sprays paint onto the set position through the set position in the third cavity; A voltage stabilizing assembly, comprising a negative pressure tube that sequentially passes through and connects to a first chamber, a second chamber, and a third chamber, the negative pressure tube being used to extract gas and impurities from the first chamber, the second chamber, and the third chamber; A drive assembly for driving the main pipe to move relative to the pipe to be processed along the axial direction of the pipe to be processed; A rotating assembly is used to drive the pipe to be processed to rotate around the axis of the main pipe in order to achieve circumferential spraying of the inner wall of the pipe to be processed.

[0008] The pipe inner wall spraying system of this invention integrates pretreatment and spraying, realizing continuous operation of pretreatment and spraying. While ensuring the efficiency of pretreatment and spraying, the processing cost is low and it is environmentally friendly and healthy.

[0009] In some embodiments, the rotating assembly includes at least two rotating units, each rotating unit including a drive box, a drive ring, and a fastening assembly. The drive box has a limiting groove, the drive ring engages with the limiting groove and is used for the pipe to be processed to pass through, the drive box is used to drive the drive ring to rotate along the axis of the drive ring, and the fastening assembly is disposed on the drive ring and is used to fix the drive ring to the pipe to be processed.

[0010] In some embodiments, the drive ring is a gear ring, and the gear ring has limiting protrusions on both axial sides. The limiting protrusions are radially stopped by the drive housing, and the drive housing has a gear structure that meshes with the drive ring for transmission.

[0011] In some embodiments, the fastening assembly is provided in multiple ways, and the fastening assembly includes a fastening rod and a fastening plate. The fastening rod extends radially along the drive ring and its radial position is adjustable along the drive ring. The fastening plate is rotatably disposed at the end of the fastening rod. The multiple fastening plates are used to fix the drive ring to the pipe to be processed.

[0012] In some embodiments, the drive assembly includes a traveling mechanism and a fixed frame. The fixed frame is fixedly mounted on the traveling mechanism and fixedly connected to the main pipe. The traveling mechanism is used to drive the fixed frame to move so as to drive the main pipe to move axially along the pipe to be processed.

[0013] In some embodiments, the drive assembly includes a winch on which an end of a rope is connected to an end of the main pipe, the winch being used to pull the main pipe along the axis of the pipe to be processed when the rope is wound up.

[0014] In some embodiments, the main pipe, the first delivery pipe, the second delivery pipe, the third delivery pipe, and the negative pressure pipe are all made of flexible material.

[0015] In some embodiments, the negative pressure tube is disposed inside the main tube, and the negative pressure tube is connected to an adsorption tube section in the first cavity, the second cavity and the third cavity, the adsorption tube section being used to absorb gas and impurities in the first cavity, the second cavity and the third cavity.

[0016] In some embodiments, a drying assembly is included, the drying assembly including a fourth delivery pipe and a fourth nozzle, the fourth delivery pipe being disposed within the main pipe and connected to the fourth nozzle, the fourth nozzle being disposed in the third cavity and located on the side of the third nozzle away from the second cavity, the fourth nozzle being used to dry the coating on the inner wall of the pipe to be processed.

[0017] In some embodiments, the drying assembly includes a heating assembly that is connected to the fourth delivery pipe and heats the gas delivered into the third chamber. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pipe inner wall spraying system according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the rotating component in the pipe inner wall spraying system according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of a pipe inner wall spraying system according to another embodiment of the present invention.

[0021] Figure label: Supervisor 1; Sealing part 2; Sandblasting assembly 3; First nozzle 31; Cleaning component 4; Second nozzle 41; Spraying assembly 5; Third nozzle 51; Voltage stabilizing component 6; negative pressure pipe 61; Rotating unit 7; drive box 71; limiting groove 711; drive ring 72; limiting protruding ring 721; fastening assembly 73; fastening rod 731; fastening plate 732; Mounting bracket 8; 9. Winch; Pipe 10 to be processed. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the pipe inner wall spraying system of this embodiment includes a main pipe 1, four sealing parts 2, a sandblasting assembly 3, a cleaning assembly 4, a spraying assembly 5, a pressure stabilizing assembly 6, a driving assembly, and a rotating assembly. At least a portion of the main pipe 1 is used to extend into the pipe 10 to be processed. The four sealing parts 2 are spaced apart on the main pipe 1. The four sealing parts 2 are used to cooperate within the pipe 10 to be processed and divide the inner cavity of the processed pipe into a first cavity, a second cavity, and a third cavity along the feeding direction of the main pipe 1. The sandblasting assembly 3 includes a first conveying pipe and a first nozzle 31. The first conveying pipe is disposed within the main pipe 1 and connected to the first nozzle 31. The first nozzle 31 is disposed in the first cavity and performs sandblasting treatment on the designated position when the first cavity passes through the designated position of the pipe 10 to be processed. The cleaning assembly 4 includes a second conveying pipe and a second nozzle 41. The second conveying pipe is disposed within the main pipe. The main pipe 1 is connected to the second nozzle 41. The second nozzle 41 is located in the second cavity and performs sandblasting on the set position after passing through the second cavity. The spraying component 5 includes a third conveying pipe and a third nozzle 51. The third conveying pipe is located in the main pipe 1 and connected to the third nozzle 51. The third nozzle 51 is located in the third cavity and sprays paint on the set position after passing through the third cavity. The pressure stabilizing component 6 includes a negative pressure pipe 61. The negative pressure pipe 61 passes through and connects the first cavity, the second cavity and the third cavity in sequence. The negative pressure pipe 61 is used to extract gas and impurities in the first cavity, the second cavity and the third cavity. The driving component is used to drive the main pipe 1 to move along the axial direction of the pipe 10 to be processed relative to the pipe 10 to be processed. The rotating component is used to drive the pipe 10 to be processed to rotate around the axis of the main pipe 1 to realize the circumferential spraying operation of the inner wall of the pipe 10 to be processed.

[0024] In use, the pipe inner wall spraying system of this invention drives the main pipe 1 to move relative to the pipe 10 to be processed through the drive component. The four sealing parts 2 enter the pipe 10 to be processed in sequence and form a first cavity, a second cavity, and a third cavity with the inner wall of the pipe 10. The rotating component drives the pipe 10 to be processed to rotate around the axis of the main pipe 1, so as to realize the overall operation of the first nozzle 31, the second nozzle 41, and the third nozzle 51 on the inner wall of the pipe. During the movement of the sealing parts 2, the communication between the various cavities is blocked. While ensuring the relatively independent operation of sandblasting, cleaning, and spraying, the continuity of sandblasting, cleaning, and spraying operations on the inner wall of the pipe is also guaranteed.

[0025] The pipe inner wall spraying system of this invention integrates pretreatment and spraying, realizing continuous operation of pretreatment and spraying. While ensuring the efficiency of pretreatment and spraying, the processing cost is low and it is environmentally friendly and healthy.

[0026] Optionally, the sandblasting assembly 3 includes a first pump connected to the first delivery pipe, the cleaning assembly 4 includes a second pump connected to the second delivery pipe, the spraying assembly 5 includes a third pump connected to the third delivery pipe, and the pressure stabilizing assembly 6 includes a negative pressure pump connected to the negative pressure pipe 61.

[0027] Optionally, a monitoring system is included, which is connected to the first pump, the second pump, the third pump, and the negative pressure pump to detect the output power of the first pump, the second pump, the third pump, and the negative pressure pump.

[0028] Optionally, a power supply is included to provide power to the first pump, the second pump, the third pump, and the negative pressure pump.

[0029] Optional, the maximum power of the power supply is 80kW.

[0030] Optionally, the sealing part 2 includes a sealing disc and a sealing ring fitted on the sealing disc.

[0031] In some embodiments, such as Figure 1 and Figure 2 As shown, the rotating assembly includes at least two rotating units 7. Each rotating unit 7 includes a drive box 71, a drive ring 72, and a fastening assembly 73. The drive box 71 is provided with a limiting groove 711. The drive ring 72 is fitted into the limiting groove 711 and is used for the pipe 10 to be processed to pass through. The drive box 71 is used to drive the drive ring 72 to rotate along the axis of the drive ring 72. The fastening assembly 73 is provided on the drive ring 72 and is used to fix the drive ring 72 to the pipe 10 to be processed.

[0032] The drive box 71 drives the drive ring 72 to rotate, and the drive ring 72 drives the pipe to be processed 10 to rotate around the axis of the main pipe 1 through the fastening assembly 73. The operation is simple and the transmission is stable.

[0033] In some embodiments, such as Figure 2 As shown, the drive ring 72 is a gear ring, and there are limiting protrusions 721 on both sides of the axial direction of the gear ring. The limiting protrusions 721 and the drive box 71 are radially stopped and engaged. The drive box 71 is provided with a gear structure that meshes with the drive ring 72 for transmission.

[0034] By setting a limiting protrusion 721, the axis of the drive ring 72 will not change during rotation, thus ensuring the stability of the drive ring 72 when driving the pipe 10 to be processed to rotate.

[0035] Optionally, the gear structure includes a drive motor and a drive gear. The drive motor is located inside the drive housing 71, and the drive gear is fixed on the output shaft of the drive motor and meshes with the limit ring for transmission.

[0036] In some embodiments, such as Figure 2 As shown, the fastening assembly 73 is provided in multiple ways, and the fastening assembly 73 includes a fastening rod 731 and a fastening plate 732. The fastening rod 731 extends radially along the drive ring 72 and its radial position is adjustable. The fastening plate 732 is rotatably disposed at the end of the fastening rod 731. The multiple fastening plates 732 are used to fix the drive ring 72 to the pipe 10 to be processed.

[0037] After the pipe 10 to be processed is inserted into the drive ring 72, the drive ring 72 is fixed by multiple fastening plates 732 at the position of the radial adjustment fastening rod 731 of the drive ring 72 to ensure the connection between the drive ring 72 and the pipe 10 to be processed is firm.

[0038] Optionally, the fastening rod 731 is threadedly connected to the drive ring 72 radially.

[0039] Optionally, the drive ring 72 is provided with an adjustment hole at the position corresponding to the fastening rod 731.

[0040] In some embodiments, such as Figure 1 As shown, the drive assembly includes a traveling mechanism and a fixed frame 8. The fixed frame 8 is fixedly mounted on the traveling mechanism and fixedly connected to the main pipe 1. The traveling mechanism is used to drive the fixed frame 8 to move so as to drive the main pipe 1 to move axially along the pipe 10 to be processed.

[0041] The moving mechanism drives the fixed frame 8 to move, ensuring that the main pipe 1 moves within the pipe 10 to be processed, making the operation convenient and reliable.

[0042] Optionally, the rear end of the rotating assembly is provided with a support plate, and the support plate is provided with a support hole for the main tube 1 to pass through. The support hole is used to support the main tube 1 and constrain the feed direction of the main tube 1.

[0043] In some embodiments, such as Figure 3As shown, the drive assembly includes a winch 9, the end of the rope on the winch 9 being connected to the end of the main pipe 1. The winch 9 is used to pull the main pipe 1 along the axis of the pipe 10 to be processed when the rope is wound up.

[0044] By setting up a winch 9 and using ropes to pull the main pipe 1, the overall layout length of the system is reduced, and the operation is simple and convenient.

[0045] Optionally, the rear end of the rotating assembly is provided with an arc-shaped top support plate, which is used to support the sealing part 2 when the sealing part 2 has not entered the pipe 10 to be processed.

[0046] In some embodiments, the main pipe 1, the first conveying pipe, the second conveying pipe, the third conveying pipe, and the negative pressure pipe 61 are all made of flexible material.

[0047] The main pipe 1, the first conveying pipe, the second conveying pipe, the third conveying pipe and the negative pressure pipe 61 are made of flexible material. When working on the inner wall of the pipe to be processed 10, the main pipe 1, the first conveying pipe, the second conveying pipe, the third conveying pipe and the negative pressure pipe 61 can all be bent to adapt to the processing of the bent pipe.

[0048] In some embodiments, a negative pressure tube 61 is disposed inside the main tube 1, and the negative pressure tube 61 is connected to an adsorption tube section in the first cavity, the second cavity and the third cavity. The adsorption tube section is used to absorb gas and impurities in the first cavity, the second cavity and the third cavity.

[0049] The negative pressure pipe 61 is placed inside the main pipe 1 to constrain the negative pressure pipe 61, reduce the displacement of the negative pressure pipe 61 in the pipeline 10 to be processed, and reduce the interference that the negative pressure pipe 61 may cause to the cleaning and spraying operations of the inner wall of the pipeline.

[0050] In some embodiments, a drying assembly is included, which includes a fourth delivery pipe and a fourth nozzle. The fourth delivery pipe is disposed in the main pipe 1 and connected to the fourth nozzle. The fourth nozzle is disposed in the third cavity and located on the side of the third nozzle 51 away from the second cavity. The fourth nozzle is used to dry the coating on the inner wall of the pipe 10 to be processed.

[0051] A drying component is set up so that after the third nozzle 51 finishes spraying, the fourth nozzle sprays gas onto the inner wall of the pipe 10 to be processed, in order to accelerate the drying and solidification of the coating and ensure the spraying effect inside the pipe 10.

[0052] In some embodiments, the drying assembly includes a heating assembly that is connected to a fourth delivery pipe and heats the gas being delivered into the third chamber.

[0053] By setting up a heating component, the temperature of the gas inside the fourth conveying pipe is increased, which accelerates the drying of the material inside the pipe 10 to be processed, and makes it more conducive to spraying the inner wall of the pipe 10 to be processed in an environment with high humidity.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipe inner wall spraying system, characterized in that, include: The main pipe, at least in part, is used to extend into the pipe to be processed; Four sealing parts are spaced apart in the main pipe. The four sealing parts are used to cooperate in the pipe to be processed and divide the inner cavity of the processed pipe into a first cavity, a second cavity and a third cavity along the feed direction of the main pipe. A sandblasting assembly, comprising a first delivery pipe and a first nozzle, wherein the first delivery pipe is disposed within the main pipe and connected to the first nozzle, and the first nozzle is disposed in the first cavity and performs sandblasting on the set position when the first cavity passes through the set position of the pipe to be processed. A cleaning assembly, comprising a second delivery pipe and a second nozzle, wherein the second delivery pipe is disposed within the main pipe and connected to the second nozzle, and the second nozzle is disposed in the second cavity and sprays gas at the set position through the second cavity; A spraying assembly, comprising a third delivery pipe and a third nozzle, wherein the third delivery pipe is disposed within the main pipe and connected to the third nozzle, and the third nozzle is disposed in the third cavity and sprays paint onto the set position through the set position in the third cavity; A voltage stabilizing assembly, comprising a negative pressure tube that sequentially passes through and connects to a first chamber, a second chamber, and a third chamber, the negative pressure tube being used to extract gas and impurities from the first chamber, the second chamber, and the third chamber; A drive assembly for driving the main pipe to move relative to the pipe to be processed along the axial direction of the pipe to be processed; A rotating assembly is used to drive the pipe to be processed to rotate around the axis of the main pipe in order to achieve circumferential spraying of the inner wall of the pipe to be processed.

2. The pipe inner wall spraying system according to claim 1, characterized in that, The rotating assembly includes at least two rotating units. Each rotating unit includes a drive box, a drive ring, and a fastening assembly. The drive box has a limiting groove. The drive ring is fitted into the limiting groove and is used for the pipe to be processed to pass through. The drive box is used to drive the drive ring to rotate along the axis of the drive ring. The fastening assembly is provided on the drive ring and is used to fix the drive ring to the pipe to be processed.

3. The pipe inner wall spraying system according to claim 2, characterized in that, The drive ring is a gear ring, and the gear ring has limiting protrusions on both axial sides. The limiting protrusions are radially stopped by the drive box. The drive box has a gear structure that meshes with the drive ring for transmission.

4. The pipe inner wall spraying system according to claim 2, characterized in that, The fastening assembly is provided in multiple parts, and the fastening assembly includes a fastening rod and a fastening plate. The fastening rod extends radially along the drive ring and its radial position is adjustable. The fastening plate is rotatably disposed at the end of the fastening rod. The multiple fastening plates are used to fix the drive ring to the pipe to be processed.

5. The pipe inner wall spraying system according to claim 1, characterized in that, The drive assembly includes a traveling mechanism and a fixed frame. The fixed frame is fixedly mounted on the traveling mechanism and fixedly connected to the main pipe. The traveling mechanism is used to drive the fixed frame to move so as to drive the main pipe to move axially along the pipe to be processed.

6. The pipe inner wall spraying system according to claim 1, characterized in that, The drive assembly includes a winch, on which the end of a rope is connected to the end of the main pipe, the winch being used to pull the main pipe along the axis of the pipe to be processed when the rope is wound up.

7. The pipe inner wall spraying system according to claim 6, characterized in that, The main pipe, the first conveying pipe, the second conveying pipe, the third conveying pipe, and the negative pressure pipe are all made of flexible material.

8. The pipe inner wall spraying system according to claim 1, characterized in that, The negative pressure tube is located inside the main tube, and the negative pressure tube is connected to an adsorption tube section in the first cavity, the second cavity and the third cavity. The adsorption tube section is used to absorb the gas and impurities in the first cavity, the second cavity and the third cavity.

9. The pipe inner wall spraying system according to claim 1, characterized in that, The device includes a drying assembly, which includes a fourth delivery pipe and a fourth nozzle. The fourth delivery pipe is disposed inside the main pipe and connected to the fourth nozzle. The fourth nozzle is disposed in the third cavity and located on the side of the third nozzle away from the second cavity. The fourth nozzle is used to dry the coating on the inner wall of the pipe to be processed.

10. The pipe inner wall spraying system according to claim 1, characterized in that, The second delivery pipe is a gas pipe, and the cleaning component includes a heating component, which is connected to the second delivery pipe to heat the gas delivered into the second cavity.

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