Pipeline interior spraying device based on polyurethane coating

Abstract

The utility model discloses a polyurethane coating based pipeline interior spraying device which comprises a mounting plate and a feeding assembly arranged on the upper side of the mounting plate, a movable lifting frame is arranged above the mounting plate, a pushing assembly is arranged on the side face of the lifting frame, a spraying box is mounted at the telescopic end of the pushing assembly, and a spraying head is arranged on the spraying box. A plurality of nozzles communicating with an inner cavity of the spraying box are installed on the side face of the spraying box, and the feeding assembly communicates with the inner cavity of the spraying box. According to the pipeline interior spraying device based on the polyurethane coating, the polyurethane coating comprises a polyhydric alcohol compound and an isocyanate solution, the polyhydric alcohol compound and the isocyanate solution can be converted into solid thick-film type coating after being mixed, the high anti-corrosion effect is achieved, foreign matter attached to the inner wall of the pipeline can be cleaned when the coating is sprayed, the spraying quality of the coating is guaranteed, and the spraying efficiency is improved. And meanwhile, the sprayed coating can be monitored in real time, secondary spraying can be carried out in time when the coating is not completely covered, and the pipeline can be conveniently used for corrosion prevention.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spraying device technical field, concretely is a pipeline internal spraying device based on polyurethane coating. BACKGROUND

[0002] The damage, peeling and aging of the anticorrosive layer of the buried pipeline for petroleum, natural gas, water heating and other fluids can cause corrosion, perforation and leakage of the pipeline, resulting in serious property losses for enterprises and harm to the public and the environment. With the large-scale construction of long-distance petroleum, natural gas and other pipelines and the popularization of urban pipe networks, it is particularly important to achieve safe and efficient operation of the pipelines, and it is necessary to minimize the harm caused by pipeline corrosion.

[0003] At present, the petroleum asphalt, coal tar enamel or epoxy coal tar anticorrosion method has been replaced by fused epoxy powder (FBE) and polyethylene three-layer composite structure (3PE) anticorrosion, but the coating is easily damaged during FBE construction and transportation, on-site repair is difficult and expensive, and the cathodic current shielding effect of 3PE causes many problems in its extensive application, and the construction process is relatively complex, resulting in difficulty in anticorrosion treatment of the pipeline. In addition, when spraying inside the pipeline, dust and other foreign matter adhering to the inner wall of the pipeline can affect the spraying quality, making it inconvenient to spray inside the pipeline. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pipeline internal spraying device based on polyurethane coating. The polyurethane coating contains a polyol compound and an isocyanate solution, which can be converted into a solid thick film type coating after mixing. It has high anticorrosion effect, and the foreign matter adhering to the inner wall of the pipeline can be cleaned during spraying of the coating, ensuring the quality of the coating spraying. At the same time, the coating layer after spraying can be monitored in real time, and secondary spraying can be performed in time when the coating is not completely covered, facilitating the anticorrosion use of the pipeline and effectively solving the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pipeline internal spraying device based on polyurethane coating, comprising a mounting plate and a feeding assembly arranged on the upper side of the mounting plate, a movable lifting frame is arranged above the mounting plate, and a pushing assembly is arranged on the side surface of the lifting frame, a spraying box is installed at the telescopic end of the pushing assembly, a plurality of nozzles communicating with the inner cavity of the spraying box are installed on the side surface of the spraying box, the feeding assembly communicates with the inner cavity of the spraying box, a positioning rod is fixed on the side of the spraying box away from the pushing assembly, and a cleaning assembly is slidably arranged on the outer side of the positioning rod.

[0006] As a preferred technical scheme of the utility model, the spraying box is fixed with a mounting box on the side far from the positioning rod, a plurality of visual detection modules are mounted on the side of the mounting box, and the detection end of the visual detection module is arranged away from the mounting box.

[0007] As a preferred technical scheme of the utility model, the feeding assembly comprises a paint box, a pressurizing assembly is mounted on the side of the paint box and communicates with the inner cavity of the paint box, a feeding pipe is mounted on the lower part of the side of the paint box and communicates with the inner cavity of the paint box, and the side of the feeding pipe away from the paint box is fixed on the side of the spraying box and communicates with the inner cavity of the spraying box.

[0008] As a preferred technical scheme of the utility model, the pressurizing assembly comprises a pressurizing pump mounted on the side of the paint box, a communication pipe communicating with the inner cavity of the paint box is arranged at the pressurizing port of the pressurizing pump, a feeding port is arranged on the side of the paint box, and a detachable sealing plug is arranged in the feeding port.

[0009] As a preferred technical scheme of the utility model, a first telescopic cylinder is fixed on the side of the mounting plate, the lifting frame is mounted at the telescopic end of the first telescopic cylinder, a plurality of guide rods are mounted on the upper side of the mounting plate, and the guide rods are slidably connected with the lifting frame.

[0010] As a preferred technical scheme of the utility model, the pushing assembly comprises a second telescopic cylinder mounted on the side of the lifting frame, and the spraying box is mounted at the telescopic end of the second telescopic cylinder.

[0011] As a preferred technical scheme of the utility model, the cleaning assembly comprises a cleaning disc, a positioning cylinder is fixed on the middle of the side of the cleaning disc, the positioning cylinder is slidably arranged on the positioning rod, and a flexible sleeve ring is sleeved on the outside of the cleaning disc.

[0012] As a preferred technical scheme of the utility model, threads are formed in the end of the positioning rod, and a positioning nut is mounted on the end of the positioning rod through threads.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The pipeline internal spraying device based on polyurethane paint of the utility model, the polyurethane paint comprises polyol compound and isocyanate solution, and the paint can be converted into solid thick film type paint after mixing, has high anticorrosive effect, and can clean the foreign matters adhered to the inner wall of the pipeline when spraying the paint, guarantees the paint spraying quality, can monitor the coating after spraying in real time, can spray the paint again in time when the paint is not completely covered, and is convenient for the anticorrosive use of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 For Figure 1 Enlarged structural schematic view at A in the middle;

[0017] Figure 3 Another perspective structural schematic view of the utility model;

[0018] Figure 4 Front structural schematic view of the utility model.

[0019] In the figure: 1 mounting plate, 2 lifting frame, 3 first telescopic cylinder, 4 guide rod, 5 second telescopic cylinder, 6 mounting box, 7 visual detection module, 8 spraying box, 9 spray head, 10 positioning rod, 11 cleaning disc, 12 positioning cylinder, 13 flexible collar, 14 positioning nut, 15 paint box, 16 pressure pump, 17 communication pipe, 18 feed pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a pipeline internal spraying device based on polyurethane paint, including mounting plate 1 and the feed assembly being set on the upper side of mounting plate 1, movable lifting frame 2 is arranged on the top of mounting plate 1, first telescopic cylinder 3 is fixed on the side of mounting plate 1, first telescopic cylinder 3 includes but is not limited to hydraulic telescopic cylinder or servo motor cylinder, lifting frame 2 is installed at the telescopic end of first telescopic cylinder 3, by controlling first telescopic cylinder 3 work drive lifting frame 2 moves up and down, it is convenient for this spraying device to be used to different diameter pipeline, several guide rods 4 are installed on the upper side of mounting plate 1, and guide rod 4 is slidably connected with lifting frame 2, during the up and down movement of lifting frame 2, guide rod 4 plays the role of positioning and guiding, and guide rod 4 is used to improve the stability of lifting frame 2 when using.

[0022] Pushing assembly is arranged on the side of lifting frame 2, spraying box 8 is installed at the telescopic end of pushing assembly, pushing assembly includes second telescopic cylinder 5 installed on the side of lifting frame 2, spraying box 8 is installed at the telescopic end of second telescopic cylinder 5, by controlling second telescopic cylinder 5 work drive spraying box 8 moves, it is convenient to push spraying box 8 to the inside of pipeline and carry out spraying operation.

[0023] The spraying box 8 is provided with a plurality of nozzles 9 communicated with the inner cavity of the spraying box 8, and the feeding assembly is communicated with the inner cavity of the spraying box 8. The polyurethane coating is conveyed into the spraying box 8 through the feeding assembly, and under the pressure of the feeding assembly, the polyurethane coating in the spraying box 8 is sprayed out through the nozzles 9 to perform anticorrosion spraying on the inner wall of the pipeline. The polyurethane coating comprises a polyol compound and an isocyanate solution, and after mixing, the polyurethane coating can be converted into a solid thick film type coating, which has high anticorrosion effect and is convenient for long-term use of the pipeline. During the spraying process, the spraying box 8 is pushed to move inside the pipeline through the pushing assembly, so that the spraying device can conveniently perform spraying work on the inner wall of the pipeline.

[0024] The feeding assembly comprises a coating tank 15, and the coating tank 15 is provided with a pressurizing assembly communicated with the inner cavity of the coating tank 15 on the side surface. The coating tank 15 is provided with a feeding pipe 18 communicated with the inner cavity of the coating tank 15 on the lower side surface. The feeding pipe 18 is a flexible hose, and the side of the feeding pipe 18 away from the coating tank 15 is fixed on the side surface of the spraying box 8 and communicated with the inner cavity of the spraying box 8. The coating tank 15 is pressurized through the control of the pressurizing assembly, so that the polyurethane coating in the coating tank 15 enters the feeding pipe 18 under the pressure and enters the coating tank 15 through the feeding pipe 18 to supply the coating tank 15, which is convenient for use of the spraying device.

[0025] The pressurizing assembly comprises a pressurizing pump 16 installed on the side surface of the coating tank 15, and the pressurizing port of the pressurizing pump 16 is provided with a communicating pipe 17 communicated with the inner cavity of the coating tank 15. The inside of the coating tank 15 is pressurized through the pressurizing pump 16, which is convenient for use of the feeding assembly. The coating tank 15 is provided with a feeding port on the side surface, and the feeding port is provided with a detachable sealing plug. The polyurethane coating can be supplemented into the coating tank 15 by removing the sealing plug, and the feeding port is sealed through the sealing plug after supplementing.

[0026] The spraying box 8 is fixed with a mounting box 6 away from the positioning rod 10, and the mounting box 6 is provided with a plurality of visual detection modules 7 on the side surface. The detection end of the visual detection module 7 is away from the mounting box 6. The visual detection module 7 is preferably a camera. The spraying box 8 is sprayed first through the nozzles 9, and the visual detection module 7 is detected second. When the visual detection module 7 finds that the pipeline is not uniformly sprayed or the coating is not successfully covered, the spraying box 8 can be pulled back to be resprayed through the second telescopic cylinder 5, so as to ensure the anticorrosion layer spraying quality of the inner wall of the pipeline.

[0027] The positioning rod 10 is fixed on the side of the spraying box 8 away from the pushing assembly, and a cleaning assembly is slidably arranged outside the positioning rod 10, the cleaning assembly comprises a cleaning disc 11, the cleaning disc 11 is located in front of the spraying box 8, when the spraying box 8 moves in the pipeline, the cleaning disc 11 located in front of the spraying box 8 cleans the foreign matters on the inner wall of the pipeline, so that the spraying of the foreign matters on the inner wall of the pipeline is avoided, the flexible sleeve 13 is arranged outside the cleaning disc 11, and the cleaning disc 11 is in contact with the inner wall of the pipeline during use, so that the abrasion of the cleaning disc 11 on the inner wall of the pipeline is reduced, and the cleaning effect of the cleaning disc 11 is improved by the flexible sleeve 13; in addition, the spraying box 8 is always located at the center of the pipeline due to the arrangement of the cleaning disc 11, so that the spraying effect of the spraying box 8 on the pipeline through the spray head 9 is ensured.

[0028] The positioning cylinder 12 is fixed on the side surface of the cleaning disc 11 and is slidably arranged on the positioning rod 10, when the spraying box 8 moves forward to spray in the pipeline, the cleaning disc 11 is moved by the spraying box 8 to clean the inner wall of the pipeline, when the visual detection module 7 detects spraying abnormity, the spraying box 8 is pulled backward to move, the cleaning disc 11 moves relative to the positioning rod 10 due to the friction of the inner wall of the pipeline, that is, the position of the cleaning disc 11 does not move relative to the pipeline, so that the backward movement of the cleaning disc 11 does not affect the paint sprayed on the inner wall of the pipeline, and the use of the spraying device is facilitated.

[0029] The end portion of the positioning rod 10 is provided with a thread, and the positioning nut 14 is arranged on the end portion of the positioning rod 10 through the thread, the cleaning disc 11 can be taken off from the positioning rod 10 by removing the positioning nut 14, so that the appropriate cleaning disc 11 can be selected according to the size of the pipeline, the flexible sleeve 13 outside the cleaning disc 11 can be effectively contacted with the inner wall of the pipeline, and the use of the cleaning assembly is facilitated.

[0030] The first telescopic cylinder 3, the second telescopic cylinder 5, the visual detection module 7 and the pressure pump 16 used in the utility model are all common electronic elements in the prior art, the working mode and the circuit structure are all known technologies, the electronic elements are controlled by the switch group or the PLC controller, and the working mode is a common technical means for technicians, and details are not repeated here.

[0031] The non-disclosed parts in the utility model are all prior art, and the specific structure, materials and working principles are not described in detail. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe internal spraying device based on polyurethane coating, comprising a mounting plate (1) and a feed assembly arranged on the upper side of the mounting plate (1), characterized in that: A movable lifting frame (2) is provided above the mounting plate (1), and a pushing assembly is provided on the side of the lifting frame (2); a spray box (8) is installed at the telescopic end of the pushing assembly; a plurality of nozzles (9) connected to the inner cavity of the spray box (8) are installed on the side of the spray box (8); the feeding assembly is connected to the inner cavity of the spray box (8); a positioning rod (10) is fixed on the side of the spray box (8) away from the pushing assembly, and a cleaning assembly is slidably provided on the outer side of the positioning rod (10).

2. The pipe internal spraying device based on polyurethane coating according to claim 1, characterized in that: A mounting box (6) is fixed to a side of the spray box (8) away from the positioning rod (10), and a plurality of visual detection modules (7) are installed on the side of the mounting box (6), and the detection ends of the visual detection modules (7) are arranged away from the mounting box (6).

3. The pipe internal spraying device based on polyurethane coating according to claim 1, characterized in that: The feeding assembly comprises a paint box (15), a pressurizing assembly connected to the inner cavity of the paint box (15) is installed on the side of the paint box (15), a feeding pipe (18) connected to the inner cavity of the paint box (15) is installed on the lower part of the side of the paint box (15), and the feeding pipe (18) is fixed to the side of the spray box (8) away from the paint box (15) and is connected to the inner cavity of the spray box (8).

4. The pipe internal spraying device based on polyurethane coating according to claim 3 is characterized in that: The pressurizing assembly includes a pressurizing pump (16) installed on the side of the paint box (15), and a connecting pipe (17) communicating with the inner cavity of the paint box (15) is provided at the pressurizing port of the pressurizing pump (16). The paint box (15) is provided with a feed port on the side, and a detachable sealing plug is provided in the feed port.

5. The pipe internal spraying device based on polyurethane coating according to claim 1, characterized in that: A first telescopic cylinder (3) is fixed to the side of the mounting plate (1), the lifting frame (2) is mounted at the telescopic end of the first telescopic cylinder (3), a plurality of guide rods (4) are mounted on the upper side of the mounting plate (1), and the guide rods (4) are slidably connected to the lifting frame (2).

6. The pipe internal spraying device based on polyurethane coating according to claim 1, characterized in that: The pushing assembly comprises a second telescopic cylinder (5) mounted on the side of the lifting frame (2), and the spray box (8) is mounted on the telescopic end of the second telescopic cylinder (5).

7. The polyurethane coating-based pipe internal spraying device according to claim 1, characterized in that: The cleaning assembly comprises a cleaning disc (11), a positioning cylinder (12) is fixed in the middle of the side of the cleaning disc (11), and the positioning cylinder (12) is slidably arranged on the positioning rod (10), and a flexible ring (13) is sleeved on the outside of the cleaning disc (11).

8. The polyurethane coating-based pipe internal spraying device according to claim 1, characterized in that: The end of the positioning rod (10) is provided with a thread, and a positioning nut (14) is mounted on the end of the positioning rod (10) via the thread.

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