Anti-corrosion spraying device for inner wall of large pipeline

Abstract

The utility model discloses a large pipeline inner wall anti-corrosion spraying device which comprises a shell, an installation cylinder is installed in the middle of the interior of the shell, four sets of guide rods are arranged on the two sides of the interior of the shell, sleeves in sliding fit are arranged on the outer sides of the four sets of guide rods on the same side, and the sleeves extend out of the shell and are provided with moving wheels. And drivers connected with the moving wheels are arranged at the bottoms of one ends of the two sets of sleeves on the same side, a liquid supply box is arranged on the top of the shell, and a guide pipe is arranged on one side of the top of the liquid supply box. The four sets of sleeves on the same side face are synchronously adjusted, so that the movable supporting foot parts of the movable wheels are tightly attached to the inner wall of the pipe body, the device is assisted in positioning and moves around the inner wall of the pipe body, hot gas is formed through structural cooperation of the installation cylinder and the air heater and sprayed out of the drying disc, and the drying efficiency is improved. And therefore, when the spraying disc performs anti-corrosion spraying on the pipe wall, the hot gas is promoted to quickly dry the sprayed coating.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying devices, in particular to an anti-corrosion spraying device for the inner wall of a large pipeline. Background Art

[0002] As an important means of material transportation, pipelines are widely used. For example, they play an extremely important role in the petrochemical, natural gas, water conservancy and other industries. In the process of water conservancy transportation, the water quality contains more metal ions, which makes it highly corrosive to the inner wall of the transportation pipeline. Therefore, in order to extend the service life of water conservancy pipelines and reduce maintenance costs, anti-corrosion materials need to be sprayed on the inner wall of the pipeline.

[0003] Authorized patent number CN216500240U discloses an anti-corrosion spraying device for the inner wall of a water conservancy pipeline. The device mainly arranges multiple sets of abutment wheels along the circumferential direction of the casing. The multiple sets of abutment wheels are driven to move synchronously by corresponding movable sleeves and abut against the inner wall of the pipeline for support. The sprayer outside the casing is placed on the central axis of the pipeline. The multiple sets of spray ports arranged on the side of the sprayer are at the same distance from the inner wall of the pipeline. The sprayer and the pipeline rotate coaxially, so that the spray ports spray the inner wall of the pipeline evenly. This avoids the current reliance on manual anti-corrosion spraying operations for the inner wall of the pipeline, which is labor-intensive and has low spraying quality. However, when the device is actually used, the following defects still exist:

[0004] The above patent mainly rotates the sprinkler coaxially with the pipeline to make the spray port spray the inner wall of the pipeline evenly. However, when the device is adjusted and moved, it is difficult to accurately adjust the moving wheel to the pipelines with different inner diameters, which affects the stability of the device moving in the pipeline. In addition, dust and debris are easily seeped into the pipe body and accumulated in the aisle of the inner diameter of the pipe body. Direct spraying can easily cause the local anti-corrosion coating on the inner wall of the pipe body to fail, reducing the anti-corrosion quality of the pipe body. In addition, it is not easy to dry the coating synchronously while carrying out the anti-corrosion spraying, which causes the coating on the upper wall of the pipe body to drip, reducing the uniformity of the pipe body spraying. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-corrosion spraying device for the inner wall of a large pipeline to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-corrosion spraying device for the inner wall of a large pipeline, comprising a shell, a mounting cylinder installed at a middle position inside the shell, four groups of guide rods are provided on both sides of the inside of the shell, the outer sides of the four groups of guide rods on the same side are provided with sliding-fitting sleeves, and the sleeves extend out of the outside of the shell and are provided with moving wheels, the bottoms of one end of the two groups of sleeves on the same side are provided with drivers interconnected with the moving wheels, a liquid supply tank is provided on the top of the liquid supply tank, a conduit is provided on one side of the top of the liquid supply tank, a fixing groove is installed on one side of the shell, a spraying disk is provided on one side of the fixing groove, and the conduit extends to the inside of the fixing groove and is communicated with the spraying disk;

[0007] The bottom of the shell is provided with a bracket, and the inner side of the bracket is sleeved with a screw, a servo motor is provided at the middle position of the bottom of the shell, the outer side of the screw and the output end of the servo motor are provided with a bevel gear set that meshes with each other, the outer side of the mounting cylinder is sleeved with two groups of mounting rings, the inner side of the mounting cylinder is provided with multiple groups of heating plates, the outer side of the screw is symmetrically provided with a threaded movable plate, and the movable plate is fixedly connected to the mounting ring, and four groups of movable plates movably connected to the sleeve are provided on the side away from each other of the two groups of mounting rings, a hot air blower is provided at the middle position of one side of the shell, and the hot air blower and the mounting cylinder are communicated with each other, a heat conducting pipe is sleeved at the middle position of the other side of the shell, a driving motor is provided inside the fixed groove, and a gear set that meshes with each other is provided on the output end of the driving motor and the outer side of the heat conducting pipe, the heat conducting pipe passes through the interior of the spray disk and is provided with a drying disk that is communicated with each other, and a scraping brush cleaning mechanism is provided at the bottom of one side of the shell.

[0008] Preferably, the scraping brush cleaning mechanism is composed of a mounting groove, a lifting plate, a sleeve hole, a sleeve rod, a connecting plate, a semi-arc brush plate and a dust suction device. A mounting groove is provided at the bottom of one side of the shell, and a lifting plate with lifting cooperation is provided inside the mounting groove, and a sleeve hole is provided inside the lifting plate. Sliding sleeve rods are symmetrically provided at both ends of the sleeve hole, and a connecting plate is installed on the side where the two groups of sleeve rods are away from each other, and the connecting plate is connected to the two groups of sleeves on one side of the bottom of the shell, a semi-arc brush plate is provided at the bottom of the lifting plate, and a dust suction device is provided at the bottom of one side of the interior of the shell.

[0009] Preferably, a feed port is provided on one side of the top of the liquid supply box, and a sealing cover is provided on the outside of the feed port to facilitate the filling of anti-corrosion liquid for spraying operations.

[0010] Preferably, four groups of spray ports are opened on the outside of the spray plate, four groups of exhaust ports are opened on the outside of the drying plate, and a rotating joint connected to each other is provided between the heat pipe and the heating plate to improve the uniformity of spraying and drying of the spray plate and the drying plate.

[0011] Preferably, a dustproof net is provided at the middle position of one side of the shell, and a warehouse door is provided at the middle position of one end of the shell to facilitate maintenance, inspection and cleaning of the internal structure.

[0012] Preferably, a telescopic tube is provided at the output end of the dust suction device, and the telescopic tube extends out of the outside of the shell and is arranged at the bottom of one side of the lifting plate. One side of the dust suction device is provided with interconnected collection grooves to facilitate the collection of absorbed dust and debris and facilitate subsequent cleaning.

[0013] The utility model proposes an anti-corrosion spraying device for the inner wall of a large pipeline, which has at least the following beneficial effects:

[0014] 1. Through the synchronous adjustment of the four sets of sleeves on the same side, the moving support part of the moving wheel is closely fitted with the inner wall of the pipe body, thereby assisting the positioning of the device and moving along the inner wall of the pipe body. The structure of the mounting cylinder and the hot air blower is coordinated to form hot gas ejected from the drying plate. Then, while the spraying plate is spraying the anti-corrosion on the pipe wall, the hot gas is prompted to quickly dry the sprayed coating. The rotation of the drying plate is used to improve the uniformity and efficiency of drying, thereby increasing the quality of the anti-corrosion spraying operation on the pipe wall.

[0015] 2. By utilizing the installation coordination of the scraping and cleaning mechanism, the device is prompted to move on the pipe body while the semi-arc brush plate scrapes and cleans the aisle of the inner diameter of the pipe body. At the same time, the dust suction device is used to perform cleaning operations while the pipe body is being sprayed with anti-corrosion paint, thereby greatly improving the cleanliness of the inner wall of the pipe body and enhancing the effectiveness of the anti-corrosion spraying. The integrated setting of the structure and the spraying device facilitates the cleaning and maintenance of large pipe bodies, thereby increasing the functionality and practical value of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is the first front cross-sectional view of the present utility model;

[0018] Figure 3 This is a second front cross-sectional view of the present invention;

[0019] Figure 4 It is an enlarged schematic diagram of the side view of the scraping brush cleaning mechanism of the present invention.

[0020] In the figure: 1. Housing; 2. Driver; 3. Sleeve; 4. Spray plate; 5. Drying plate; 6. Fixing groove; 7. Conduit; 8. Moving wheel; 9. Liquid supply tank; 10. Scraper cleaning mechanism; 11. Screw; 12. Moving plate; 13. Servo motor; 14. Bevel gear set; 15. Mounting ring; 16. Movable plate; 17. Guide rod; 18. Mounting cylinder; 19. Hot air blower; 20. Heating plate; 21. Heat pipe; 22. Drive motor; 23. Gear set. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The embodiment of the present invention provides: an anti-corrosion spraying device for the inner wall of a large pipeline, comprising a shell 1, characterized in that: a mounting cylinder 18 is installed at the middle position inside the shell 1, four groups of guide rods 17 are provided on both sides of the interior of the shell 1, and the outer sides of the four groups of guide rods 17 on the same side are provided with sliding-fitting sleeves 3, and the sleeves 3 extend out of the outside of the shell 1 and are provided with moving wheels 8. The bottom of one end of the two groups of sleeves 3 on the same side are provided with a driver 2 connected to the moving wheels 8. A liquid supply box 9 is provided on the top of the shell 1, and a guide tube 7 is provided on one side of the top of the liquid supply box 9. A fixing groove 6 is installed on one side of the shell 1, and a spraying disk 4 is provided on one side of the fixing groove 6. The guide tube 7 extends to the interior of the fixed groove 6 and is connected to the spraying disk 4. A dustproof net is provided at the middle position of one side of the shell 1, and a warehouse door is provided at the middle position of one end of the shell 1, which is convenient for maintenance, inspection and cleaning of the internal structure. A feed port is opened on one side of the top of the liquid supply box 9, and a sealing cover is provided on the outer side of the feed port, which is convenient for filling anti-corrosion liquid for spraying operation;

[0023] A bracket is provided at the bottom of the shell 1, and a screw rod 11 is sleeved on the inner side of the bracket. A servo motor 13 is provided at the middle position of the bottom of the shell 1. The outer side of the screw rod 11 and the output end of the servo motor 13 are provided with a bevel gear set 14 that meshes with each other. Two sets of mounting rings 15 are sleeved on the outer side of the mounting cylinder 18. Multiple sets of heating plates 20 are arranged on the inner side of the mounting cylinder 18. The outer side of the screw rod 11 is symmetrically provided with a thread-matched movable plate 12, and the movable plate 12 is fixedly connected to the mounting ring 15. Four sets of movable plates 16 movably connected to the sleeve 3 are provided on the side away from each other of the two sets of mounting rings 15. A hot air blower 19 is provided at the middle position of one side of the shell 1. The hot air blower 19 is connected to the mounting cylinder 18, a heat conducting pipe 21 is sleeved at the middle position on the other side of the interior of the shell 1, a driving motor 22 is provided inside the fixing groove 6, and a gear set 23 that meshes with each other is provided between the output end of the driving motor 22 and the outer side of the heat conducting pipe 21. The heat conducting pipe 21 passes through the interior of the spraying disk 4 and is provided with a drying disk 5 that is connected to each other. A scraping brush cleaning mechanism 10 is provided at the bottom of one side of the shell 1. Four groups of spray ports are opened on the outer side of the spraying disk 4, and four groups of exhaust ports are opened on the outer side of the drying disk 5. A rotary joint connected to each other is provided between the heat conducting pipe 21 and the heating plate 20 to improve the uniformity of spraying and drying of the spraying disk 4 and the drying disk 5.

[0024] The scraping and cleaning mechanism 10 is composed of a mounting groove, a lifting plate, a sleeve hole, a sleeve rod, a connecting plate, a semi-arc brush plate and a dust suction device. A mounting groove is provided at the bottom of one side of the shell 1, and a lifting plate with a lifting fit is provided inside the mounting groove. A sleeve hole is provided inside the lifting plate, and sleeve rods with a sliding fit are symmetrically provided at both ends of the sleeve hole. A connecting plate is installed on the side where the two groups of sleeve rods are away from each other, and the connecting plate is connected to the two groups of sleeves 3 on one side of the bottom of the shell 1. A semi-arc brush plate is provided at the bottom of the lifting plate, and a dust suction device is provided at the bottom of one side of the interior of the shell 1.

[0025] Example 1, as Figure 1-4 As shown, when the device moves around the tube body, the structure of the scraping and cleaning mechanism 10 can be used to expand the two sets of sleeves 3 at the bottom of one side of the shell 1 while driving the connecting plate sleeve rod to expand outward, and as the sleeve rod opens, the lifting plate is driven to descend, prompting the lifting plate to drive the semi-arc brush plate to adjust its height synchronously with the telescopic adjustment of the sleeve 3, prompting the semi-arc brush plate to contact the aisle at the bottom of the inner wall of the tube body. At this time, the semi-arc brush plate can scrape and clean the bottom of the tube body while the device moves, scraping off the adhered dust and debris, and using the dust suction device to absorb and process them, and when the sleeve 3 is retracted, the sleeve rod is driven back into the sleeve hole, allowing the lifting plate to be guided back into the installation groove.

[0026] Example 2, as Figure 1-4As shown, a telescopic tube is provided at the output end of the dust collection device, and the telescopic tube extends out of the outside of the shell 1 and is arranged at the bottom of one side of the lifting plate. One side of the dust collection device is provided with mutually connected collecting troughs, which can be used to promote the lifting and lowering adjustment of the lifting plate while driving the telescopic tube to adjust synchronously, so that the dust collection port at the bottom of the telescopic tube is close to the aisle on the inner wall of the tube body, and then the dust collection device is started to absorb the dust and impurities in the tube body into the collecting trough, which is convenient for subsequent processing.

[0027] Working principle: In the anti-corrosion spraying device for the inner wall of large pipelines;

[0028] When the device is actually used, the anticorrosive liquid can be injected into the liquid supply tank 9, and the bevel gear set 14 is meshed when the servo motor 13 is started, so that the bevel gear set 14 drives the screw rod 11 to rotate, and then the two sets of movable plates 12 and the mounting ring 15 are moved away from each other as the screw rod 11 rotates, so that the two sets of mounting rings 15 push the movable plate 16 to force the sleeve 3 to expand under the guidance of the guide rod 17. The four sets of sleeves 3 on the same side are expanded synchronously so that the eight sets of sleeves 3 can be contacted and positioned with the inner wall of the pipe body according to the inner diameter of the pipe body. At this time, the driver 2 set below can be started to drive the movable wheel 8 to drive the device as a whole to move along the inner wall of the pipe body to perform automatic spraying operation.

[0029] As the device moves, the liquid in the liquid supply tank 9 can be introduced into the conduit 7 and the spray disk 4 by starting the pump body, and sprayed out from the spray port of the spray disk 4, thereby spraying the inner wall of the pipe body with anti-corrosion. During this period, the hot air blower 19 can be started to inhale the gas and introduce it into the installation cylinder 18. At the same time, with the heating cooperation of multiple groups of heating plates 20 arranged in the installation cylinder 18, the gas is heated and introduced into the heat pipe 21 and the drying disk 5. Then, the drive motor 22 is started to drive the heat pipe 21 and the drying disk 5 to rotate. Therefore, while the spray liquid is sprayed through the spray disk 4, the rotating drying disk 5 is used to evenly spray hot gas to cover the inner wall of the pipe body, thereby quickly drying the anti-corrosion coating after spraying, greatly improving the accuracy and efficiency of the anti-corrosion spraying work on the inner wall of the pipeline, and enhancing the spraying effect of the anti-corrosion coating.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In the description of this utility model, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connected" should be understood broadly. For example, they can mean fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

Claims

1. A large-scale pipeline inner wall anti-corrosion spraying device, comprising a housing (1), characterized in that: A mounting cylinder (18) is installed at a middle position inside the shell (1), four groups of guide rods (17) are provided on both sides inside the shell (1), and a sleeve (3) with a sliding fit is provided on the outer side of the four groups of guide rods (17) on the same side, and the sleeve (3) extends out of the outside of the shell (1) and is provided with a moving wheel (8), and a driver (2) connected to the moving wheel (8) is provided at the bottom of one end of the two groups of sleeves (3) on the same side, and a liquid supply box (9) is provided on the top of the shell (1), and a conduit (7) is provided on one side of the top of the liquid supply box (9), and a fixing groove (6) is installed on one side of the shell (1), and a spraying disc (4) is provided on one side of the fixing groove (6), and the conduit (7) extends to the inside of the fixing groove (6) and is connected to the spraying disc (4); A bracket is provided at the bottom of the housing (1), and a screw rod (11) is sleeved on the inner side of the bracket. A servo motor (13) is provided at the middle position of the bottom of the housing (1). A bevel gear set (14) meshing with each other is provided on the outer side of the screw rod (11) and the output end of the servo motor (13). Two groups of mounting rings (15) are sleeved on the outer side of the mounting cylinder (18). A plurality of heating plates (20) are arranged on the inner side of the mounting cylinder (18). Thread-matched moving plates (12) are symmetrically provided on the outer side of the screw rod (11), and the moving plates (12) are fixedly connected to the mounting rings (15). Four moving plates (12) are provided on the sides of the two groups of mounting rings (15) that are away from each other. A movable plate (16) is movably connected to the sleeve (3); a hot air blower (19) is provided at a middle position on one side of the shell (1), and the hot air blower (19) and the mounting tube (18) are connected to each other; a heat conduction pipe (21) is sleeved at a middle position on the other side of the shell (1); a drive motor (22) is provided inside the fixing groove (6); a gear group (23) meshing with each other is provided at the output end of the drive motor (22) and the outer side of the heat conduction pipe (21); the heat conduction pipe (21) passes through the interior of the spraying disk (4) and is provided with a drying disk (5) connected to each other; and a scraping brush cleaning mechanism (10) is provided at the bottom of one side of the shell (1).

2. A large-scale pipeline inner wall anti-corrosion spraying device according to claim 1, characterized in that: The scraping and cleaning mechanism (10) is respectively composed of a mounting groove, a lifting plate, a sleeve hole, a sleeve rod, a connecting plate, a semi-arc brush plate and a dust collecting device. The bottom of one side of the shell (1) is provided with a mounting groove, and a lifting plate with lifting cooperation is provided inside the mounting groove, and the lifting plate is provided inside with a sleeve hole, and sleeve rods with sliding cooperation are symmetrically sleeved at both ends inside the sleeve hole, and a connecting plate is installed on the side where the two sets of sleeve rods are away from each other, and the connecting plate is connected to the two sets of sleeves (3) on one side of the bottom of the shell (1), and a semi-arc brush plate is provided at the bottom of the lifting plate, and a dust collecting device is provided at the bottom of one side of the inside of the shell (1).

3. A large-scale pipeline inner wall anti-corrosion spraying device according to claim 1, characterized in that: A feed inlet is provided on one side of the top of the liquid supply box (9), and a sealing cover is provided on the outer side of the feed inlet.

4. A large-scale pipeline inner wall anti-corrosion spraying device according to claim 1, characterized in that: Four groups of spray ports are provided on the outer side of the spray plate (4), four groups of exhaust ports are provided on the outer side of the drying plate (5), and a rotating joint connected to each other is provided between the heat conducting pipe (21) and the heating plate (20).

5. The large-scale pipeline inner wall anti-corrosion spraying device according to claim 1 is characterized in that: A dust screen is provided at the middle position of one side of the shell (1), and a compartment door is provided at the middle position of one end of the shell (1).

6. A large-scale pipeline inner wall anti-corrosion spraying device according to claim 2, characterized in that: The output end of the dust suction device is provided with a telescopic tube, and the telescopic tube extends out of the shell (1) and is arranged at the bottom of one side of the lifting plate. One side of the dust suction device is provided with mutually connected collecting grooves.

Images