Anti-corrosion pipeline inner wall spraying device

Abstract

The utility model discloses a spraying device for the inner wall of an anti-corrosion pipeline, and relates to the technical field of anti-corrosion pipeline machining, through the arrangement of a telescopic spraying assembly, only the pressure in a material conveying pipe needs to be increased, the pressure in a rotating guide block and the pressure in the telescopic spraying assembly are increased, the telescopic spraying assembly stretches when being pressed, and therefore the spraying device can spray the inner wall of the anti-corrosion pipeline. The spraying head is made to be closer to the inner wall of the large-pipe-diameter anti-corrosion pipeline, the requirement for evenly spraying the anti-corrosion coating on the inner wall of the anti-corrosion pipeline is met, meanwhile, the anti-corrosion coating sprayed by the spraying head after pressurization has larger power, spraying can be conducted for a farther distance, the spraying head is used in cooperation with the extending telescopic spraying assembly, spraying is more effective, and the spraying efficiency is improved. Therefore, the anti-corrosion pipeline inner wall spraying device can be suitable for spraying operation of anti-corrosion pipelines with different pipe diameters, the equipment cost when spraying operation needs to be conducted on the anti-corrosion pipelines with different pipe diameters is reduced, the application range of the anti-corrosion pipeline inner wall spraying device is widened, and the using effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion pipeline processing, and particularly relates to an inner wall spraying device for anti-corrosion pipelines. Background Technique

[0002] When some steel pipes are used for transportation pipelines, such as for media such as waste water, an anti-corrosion coating is often sprayed on the inner wall of the steel pipe to enhance the rust prevention and anti-corrosion capabilities of the inner wall of the steel pipe. Generally, spraying is carried out through a nozzle at the end of a linear pipeline. When the length of the pipeline is longer, the required spraying pipeline length is longer. When the rigidity of the spraying pipeline is poor, there is a certain amount of downward displacement at its end. When the diameter of the steel pipe is smaller, the influence of the downward displacement at its end on spraying is greater. Therefore, currently, short pipelines of 3 - 5m are usually used for spraying, and then the pipelines are welded, which will reduce the anti-corrosion ability at the welded joints of the pipelines and increase the workload of laying pipelines;

[0003] To solve the above problems, a patent document with the publication number of "CN220177300U" discloses an inner wall spraying device for pipelines, including: a robot main body configured as a six-sided column; a plurality of elastic arms, with the first ends connected to the six side surfaces of the robot main body; driving wheels connected to the second ends of the elastic arms. When the robot main body is placed inside the pipeline, the driving wheels are pressed against the inner wall of the pipeline to drive the robot main body to move inside the pipeline. The utility model uses a robot that can walk inside the pipeline to tow an infusion tube and a nozzle to spray inside the pipeline. A nozzle is mounted at the tail of the robot. When the robot walks, it is in the central position of the pipeline, and the nozzle can evenly spray the preservative on the inner wall of the pipeline. A flexible hose is used as the infusion tube, and the spraying amount can always be the same inside a long pipeline, making the spraying of the preservative inside the pipeline relatively uniform, and being able to meet the spraying operation requirements for small-diameter long pipelines of more than 5m.

[0004] In the prior art, the nozzle component of the inner wall spraying device for anti-corrosion pipelines is generally set as a spraying part with a fixed length (diameter), that is, the range of the inner diameter of the pipeline that the same nozzle can cover during spraying is fixed in order to achieve the required spraying effect. Therefore, different specifications of inner wall spraying devices for anti-corrosion pipelines are required to implement spraying operations for pipelines with different inner diameters, and the equipment cost required for spraying is relatively high. Therefore, an inner wall spraying device for anti-corrosion pipelines is needed. Content of the Utility Model

[0005] The purpose of this application is to provide an inner wall spraying device for anti-corrosion pipelines to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present application provides the following technical solution: An anti-corrosion pipeline inner wall spraying device, including a material conveying pipe fixed and communicated with an external paint conveying mechanism at one end, an installation block is fixed at the front end of the material conveying pipe, and a plurality of telescopic traveling frames for driving the installation block to move are arranged on the periphery of the installation block;

[0007] A rotating guide block communicated with the material conveying pipe is rotatably connected to the front end of the installation block, and a plurality of telescopic spraying components are installed on the periphery of the rotating guide block. A spraying head for spraying anti-corrosion paint is arranged at one end of the telescopic spraying component away from the rotating guide block;

[0008] Compensation and reset components for compensating support and limiting the telescopic movement of the telescopic spraying component are installed on both sides of the telescopic spraying component.

[0009] Preferably, the telescopic spraying component includes a fixed sleeve and a movable pipe. One end of the fixed sleeve is fixed to the rotating guide block and communicated with the rotating guide block. The movable pipe is slidably connected in the fixed sleeve and communicated with the fixed sleeve. One end of the movable pipe away from the rotating guide block is fixed and communicated with the spraying head.

[0010] Preferably, the compensation and reset component includes a fixed rod and a movable rod. One end of the fixed rod is fixed to the rotating guide block, the movable rod is slidably connected in the fixed rod, and the upper end of the movable rod is fixed to the upper end of the movable pipe through a connecting piece;

[0011] The fixed rod and the movable rod are elastically connected through a compensating piece.

[0012] Preferably, the compensating piece includes a return spring. One end of the return spring is fixed to one end of the movable rod close to the rotating guide block, and the other end of the return spring is fixed to one end of the fixed rod close to the rotating guide block.

[0013] Preferably, the connecting piece includes a connecting sleeve. The connecting sleeve is fixedly sleeved on the upper end of the movable pipe, a connecting rod is fixed on the periphery of the connecting sleeve, and one end of the connecting rod away from the connecting sleeve is fixed to the upper end of the movable rod.

[0014] Preferably, a plurality of adjusting screw holes are formed on one side of the fixed rod away from the fixed sleeve. The intervals between the plurality of adjusting screw holes are the same and are located at one end of the fixed rod close to the rotating guide block. An adjusting bolt is screwed in the adjusting screw hole, and one end of the adjusting bolt is located inside the fixed rod and inserted into the gap between two coils of the return spring.

[0015] Preferably, one end of the adjusting bolt is formed with a pin having a diameter smaller than the diameter of the adjusting bolt, and the pin is inserted into the gap between two coils of the return spring.

[0016] Preferably, one end of the fixed sleeve away from the rotating guide block forms a closed end with an inner diameter smaller than the inner diameter of the fixed sleeve. The outer diameter of the movable pipe is the same as the inner diameter of the closed end of the fixed sleeve. One end of the movable pipe close to the rotating guide block is formed with a sealing limit flange, and the outer diameter of the sealing limit flange is the same as the inner diameter of the fixed sleeve.

[0017] In summary, the technical effects and advantages of the present utility model are as follows:

[0018] 1. In the present utility model, through the setting of the telescopic spraying assembly, when spraying the inner wall of an anti-corrosion pipeline with a larger pipe diameter is required, only the pressure in the material conveying pipe needs to be increased, thereby increasing the pressure in the rotating guide block and the telescopic spraying assembly. When the telescopic spraying assembly is pressurized, it elongates, so that the spraying head is closer to the inner wall of the anti-corrosion pipeline with a larger pipe diameter, meeting the requirement of evenly spraying the anti-corrosion coating on the inner wall of the anti-corrosion pipeline. At the same time, the anti-corrosion coating sprayed by the spraying head after pressurization has greater power, so that it can be sprayed over a longer distance. Used in conjunction with the elongated telescopic spraying assembly, the spraying is more effective, enabling the inner wall spraying device of the anti-corrosion pipeline to be applicable to the spraying operations of anti-corrosion pipelines with different pipe diameters, reducing the equipment cost when spraying operations are carried out on anti-corrosion pipelines with different pipe diameters, improving the applicable range of the inner wall spraying device of the anti-corrosion pipeline, and having a better use effect.

[0019] 2. In the present utility model, through the setting of the telescopic spraying assembly and the compensation and reset assembly, when the pressure in the material conveying pipe increases, the movable pipe and the spraying head cannot meet the discharge requirement of high-pressure gas in time. The pressure accumulated in the fixed sleeve and the rotating guide block drives the movable pipe to move towards the end away from the rotating guide block, so that the movable pipe extends out of the fixed sleeve, thereby achieving the effect of driving the spraying head closer to the inner wall of the anti-corrosion pipeline. When the movable pipe elongates, the movable pipe drives the movable rod to move synchronously and in the same direction through the connecting sleeve and the connecting rod, so that the reset spring is stretched. The reset spring generates a force opposite to the movement direction of the movable rod, thereby imposing a certain restriction on the movement of the movable pipe to avoid collision damage caused by the rapid extension of the movable pipe. At the same time, the reset spring and the support member composed of the fixed rod and the movable rod can provide auxiliary support for the elongated movable pipe, making it difficult for the elongated movable pipe to tilt or vibrate at the end, ensuring the spraying effect;

[0020] Secondly, after the movable pipe loses the pressure drive, the elastic force of the reset spring enables the movable pipe to automatically reset, thereby driving the spraying head away from the inner wall of the anti-corrosion pipeline, facilitating the removal of the inner wall spraying device of the anti-corrosion pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a three-dimensional structural schematic diagram in this embodiment;

[0023] Figure 2 Schematic structural diagram of the telescopic spraying assembly, compensation and reset assembly, and connecting sleeve in this embodiment;

[0024] Figure 3 Cross-sectional view of the telescopic spraying assembly and the compensation and reset assembly in this embodiment.

[0025] In the figure: 1, material conveying pipe; 2, mounting block; 3, telescopic traveling frame; 4, rotating guide block; 5, telescopic spraying assembly; 51, fixed sleeve; 52, movable pipe; 521, sealing limit flange; 53, spraying head; 6, compensation and reset assembly; 61, fixed rod; 611, adjustment screw hole; 62, movable rod; 63, return spring; 64, adjustment bolt; 641, clamping pin; 7, connecting sleeve; 71, connecting rod. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment: Refer to Figures 1-3 As shown in a corrosion-resistant pipe inner wall spraying device, including a material conveying pipe 1 fixedly connected and communicated with an external paint conveying mechanism at one end. The external paint conveying mechanism adopts a commonly used paint conveying mechanism in the prior art and is used in this embodiment, which has the function of pressurizing the inside of the material conveying pipe 1. The front end of the material conveying pipe 1 is fixed with a mounting block 2, and a plurality of telescopic traveling frames 3 for driving the mounting block 2 to move are arranged on the periphery of the mounting block 2;

[0028] The front end of the mounting block 2 is rotatably connected with a rotating guide block 4 communicated with the material conveying pipe 1. A plurality of telescopic spraying assemblies 5 are installed on the periphery of the rotating guide block 4. A spraying head 53 for spraying anti-corrosion paint is arranged at one end of the telescopic spraying assembly 5 far from the rotating guide block 4;

[0029] Compensation and reset assemblies 6 for compensating, supporting, and limiting the telescopic movement of the telescopic spraying assembly 5 are installed on both sides of the telescopic spraying assembly 5.

[0030] Based on the above structure, when it is necessary to spray the inner wall of an anti-corrosion pipeline with a larger pipe diameter, only the pressure in the material conveying pipe 1 needs to be increased, thereby increasing the pressure in the rotating guide block 4 and the telescopic spraying assembly 5. When the telescopic spraying assembly 5 is pressurized, it elongates, so that the spraying head 53 is closer to the inner wall of the anti-corrosion pipeline with a larger pipe diameter, meeting the requirement of evenly spraying the anti-corrosion coating on the inner wall of the anti-corrosion pipeline. At the same time, the anti-corrosion coating sprayed by the spraying head 53 after pressurization has greater power, so that it can be sprayed over a longer distance. When used in conjunction with the elongated telescopic spraying assembly 5, the spraying is more effective, enabling the inner wall spraying device of the anti-corrosion pipeline to be applicable to the spraying operations of anti-corrosion pipelines with different pipe diameters, reducing the equipment cost when spraying anti-corrosion pipelines with different pipe diameters, expanding the applicable range of the inner wall spraying device of the anti-corrosion pipeline, and achieving better use effects.

[0031] Further, the telescopic spraying assembly 5 includes a fixed sleeve 51 and a movable pipe 52. One end of the fixed sleeve 51 is fixed to the rotating guide block 4 and is in communication with the rotating guide block 4. The movable pipe 52 is slidably connected within the fixed sleeve 51 and is in communication with the fixed sleeve 51. The end of the movable pipe 52 away from the rotating guide block 4 is fixed to and in communication with the spraying head 53.

[0032] The end of the fixed sleeve 51 away from the rotating guide block 4 forms a closed end with an inner diameter smaller than the inner diameter of the fixed sleeve 51. The outer diameter of the movable pipe 52 is the same as the inner diameter of the closed end of the fixed sleeve 51. A sealing limit flange 521 is formed at the end of the movable pipe 52 close to the rotating guide block 4, and the outer diameter of the sealing limit flange 521 is the same as the inner diameter of the fixed sleeve 51.

[0033] The compensation and reset assembly 6 includes a fixed rod 61 and a movable rod 62. One end of the fixed rod 61 is fixed to the rotating guide block 4. The movable rod 62 is slidably connected within the fixed rod 61, and the upper end of the movable rod 62 is fixed to the upper end of the movable pipe 52 through a connecting member.

[0034] The fixed rod 61 and the movable rod 62 are elastically connected through a compensating member.

[0035] The compensating member includes a return spring 63. One end of the return spring 63 is fixed to the end of the movable rod 62 close to the rotating guide block 4, and the other end of the return spring 63 is fixed to the end of the fixed rod 61 close to the rotating guide block 4.

[0036] The connecting member includes a connecting sleeve 7. The connecting sleeve 7 is fixedly sleeved on the upper end of the movable pipe 52. Connecting rods 71 are fixed to the circumferential side of the connecting sleeve 7, and the ends of the connecting rods 71 away from the connecting sleeve 7 are fixed to the upper end of the movable rod 62.

[0037] When the pressure in the material conveying pipe 1 increases, the movable pipe 52 and the spraying head 53 cannot meet the discharge requirement of high-pressure gas in time. The pressure accumulated in the fixed sleeve 51 and the rotating guide block 4 drives the movable pipe 52 to move towards one end away from the rotating guide block 4, so that the movable pipe 52 extends out of the fixed sleeve 51, thus achieving the effect of driving the spraying head 53 closer to the inner wall of the anti-corrosion pipeline. When the movable pipe 52 extends, the movable pipe 52 drives the movable rod 62 to move synchronously in the same direction through the connecting sleeve 7 and the connecting rod 71, so that the return spring 63 is stretched. The return spring 63 generates a force opposite to the moving direction of the movable rod 62, thereby restricting the movement of the movable pipe 52 to a certain extent and avoiding collision damage caused by the rapid extension of the movable pipe 52. At the same time, the support member composed of the return spring 63, the fixed rod 61 and the movable rod 62 can provide auxiliary support for the extended movable pipe 52, so that the extended movable pipe 52 is not prone to end tilt or vibration, ensuring the spraying effect;

[0038] Secondly, after the movable pipe 52 loses the pressure drive, the elastic force of the return spring 63 enables the movable pipe 52 to automatically reset, thereby driving the spraying head 53 away from the inner wall of the anti-corrosion pipeline, facilitating the removal of the anti-corrosion pipeline inner wall spraying device.

[0039] Furthermore, a plurality of adjusting screw holes 611 are formed on one side of the fixed rod 61 away from the fixed sleeve 51. The intervals between the plurality of adjusting screw holes 611 are the same and are located at one end of the fixed rod 61 close to the rotating guide block 4. An adjusting bolt 64 is screwed in the adjusting screw hole 611, and one end of the adjusting bolt 64 is located inside the fixed rod 61 and inserted into the gap between two coils of the return spring 63.

[0040] By screwing the adjusting bolt 64 into different adjusting screw holes 611, the end of the adjusting bolt 64 can be inserted into different parts of the return spring 63, so as to adjust and limit the free deformation section of the return spring 63, thereby restricting the movable distance of the movable rod 62, adjusting the extension distance of the movable pipe 52, and meeting the spraying requirements of anti-corrosion pipelines with different inner diameters, enhancing the flexibility of the anti-corrosion pipeline inner wall spraying device during use, and having better actual use effects.

[0041] Furthermore, one end of the adjusting bolt 64 is formed with a needle 641 whose diameter is smaller than the diameter of the adjusting bolt 64. The needle 641 is inserted into the gap between two coils of the return spring 63. By setting the end of the adjusting bolt 64 in the form of the needle 641, the needle 641 can be more easily inserted into the gap between two coils of the return spring 63, facilitating the operation of the user.

[0042] Working principle of the utility model: During daily use, first place the device inside the anti-corrosion pipeline to be sprayed. Then start the external coating conveying mechanism, convey the anti-corrosion coating into the telescopic spraying assembly 5 through the material conveying pipe 1, and finally spray it out through the spraying head 53 and apply it to the inside of the anti-corrosion pipeline to complete the spraying operation;

[0043] When spraying the inner wall of an anti-corrosion pipeline with a larger pipe diameter is required, only increase the pressure in the material conveying pipe 1, that is, increase the output pressure of the external coating conveying mechanism, so as to increase the pressure in the rotating guide block 4 and the telescopic spraying assembly 5. At this time, the movable pipe 52 and the spraying head 53 cannot meet the discharge demand of the high-pressure gas in time, and the pressure accumulated in the fixed sleeve 51 and the rotating guide block 4 drives the movable pipe 52 to move towards the end away from the rotating guide block 4, so that the movable pipe 52 extends out of the fixed sleeve 51, thus achieving the effect of driving the spraying head 53 closer to the inner wall of the anti-corrosion pipeline. When the movable pipe 52 extends, the movable pipe 52 drives the movable rod 62 to move synchronously and in the same direction through the connecting sleeve 7 and the connecting rod 71, so that the return spring 63 is stretched. The return spring 63 generates a force opposite to the movement direction of the movable rod 62, thereby imposing a certain restriction on the movement of the movable pipe 52 to avoid collision damage caused by the rapid extension of the movable pipe 52. At the same time, the support member composed of the return spring 63, the fixed rod 61 and the movable rod 62 can provide auxiliary support for the extended movable pipe 52, so that the extended movable pipe 52 is not prone to end tilt or vibration, ensuring the spraying effect;

[0044] By making the spraying head 53 closer to the inner wall of the anti-corrosion pipeline with a larger pipe diameter, it meets the requirement of evenly spraying the anti-corrosion coating on the inner wall of the anti-corrosion pipeline. At the same time, the anti-corrosion coating sprayed by the spraying head 53 after pressurization has greater power, so it can spray a farther distance. Used in conjunction with the extended telescopic spraying assembly 5, the spraying is more effective, so that the anti-corrosion pipeline inner wall spraying device can be applicable to the spraying operations of anti-corrosion pipelines with different pipe diameters, reducing the equipment cost when spraying anti-corrosion pipelines with different pipe diameters, improving the applicable range of the anti-corrosion pipeline inner wall spraying device, and having a better use effect.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the utility model and are not used to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-corrosion pipeline inner wall spraying device, comprising a feed pipe (1) having one end fixed to and connected with an external paint delivery mechanism, a mounting block (2) being fixed to the front end of the feed pipe (1), and a plurality of retractable walking frames (3) for driving the mounting block (2) to move are arranged around the mounting block (2), characterized in that: The front end of the mounting block (2) is rotatably connected to a rotating guide block (4) connected to the feed pipe (1); a plurality of retractable telescopic spraying assemblies (5) are installed around the rotating guide block (4); and a spraying head (53) for spraying anti-corrosion paint is arranged at one end of the telescopic spraying assembly (5) away from the rotating guide block (4); Compensation reset components (6) for compensating, supporting and limiting the telescopic movement of the telescopic spraying component (5) are installed on both sides of the telescopic spraying component (5).

2. The anti-corrosion pipeline inner wall spraying device according to claim 1 is characterized in that: The telescopic spray assembly (5) comprises a fixed sleeve (51) and a movable tube (52); one end of the fixed sleeve (51) is fixed to and communicated with the rotating guide block (4); the movable tube (52) is slidably connected in the fixed sleeve (51) and communicated with the fixed sleeve (51); and one end of the movable tube (52) away from the rotating guide block (4) is fixed to and communicated with the spray head (53).

3. The anti-corrosion pipeline inner wall spraying device according to claim 2 is characterized in that: The compensation reset assembly (6) comprises a fixed rod (61) and a movable rod (62), one end of the fixed rod (61) is fixed to the rotating guide block (4), the movable rod (62) is slidably connected inside the fixed rod (61), and the upper end of the movable rod (62) is fixed to the upper end of the movable tube (52) via a connecting piece; The fixed rod (61) and the movable rod (62) are elastically connected via a compensation piece.

4. The anti-corrosion pipeline inner wall spraying device according to claim 3 is characterized in that: The compensating member comprises a return spring (63), one end of the return spring (63) is fixed to one end of the movable rod (62) close to the rotating guide block (4), and the other end of the return spring (63) is fixed to one end of the fixed rod (61) close to the rotating guide block (4).

5. The anti-corrosion pipeline inner wall spraying device according to claim 4 is characterized in that: The connecting piece comprises a connecting sleeve (7), the connecting sleeve (7) being fixedly sleeved on the upper end of the movable tube (52), a connecting rod (71) being fixed on the peripheral side of the connecting sleeve (7), and an end of the connecting rod (71) away from the connecting sleeve (7) being fixed to the upper end of the movable rod (62).

6. The anti-corrosion pipeline inner wall spraying device according to claim 4 is characterized in that: A plurality of adjusting screw holes (611) are provided on a side of the fixing rod (61) away from the fixing sleeve (51), the plurality of adjusting screw holes (611) are spaced at the same interval and are located at one end of the fixing rod (61) close to the rotating guide block (4), an adjusting bolt (64) is threadedly connected in the adjusting screw hole (611), one end of the adjusting bolt (64) is located in the fixing rod (61) and inserted into the gap between the two spiral turns of the return spring (63).

7. The anti-corrosion pipeline inner wall spraying device according to claim 6 is characterized in that: One end of the adjusting bolt (64) is formed with a clamping pin (641) having a diameter smaller than that of the adjusting bolt (64), and the clamping pin (641) is inserted into the gap between the two spiral turns of the return spring (63).

8. The anti-corrosion pipeline inner wall spraying device according to claim 2 is characterized in that: The end of the fixed sleeve (51) away from the rotating guide block (4) forms a closed opening with an inner diameter smaller than the inner diameter of the fixed sleeve (51); the outer diameter of the movable tube (52) is the same as the inner diameter of the closed opening of the fixed sleeve (51); the end of the movable tube (52) close to the rotating guide block (4) is formed with a sealing limit flange (521); the outer diameter of the sealing limit flange (521) is the same as the inner diameter of the fixed sleeve (51).

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