A FBE spray recovery mechanism in a large diameter steel pipe and a spraying method thereof

Abstract

The present invention discloses an FBE spray recovery mechanism in a large-diameter steel pipe and a spraying method thereof, comprising a powder spraying part and a recovery part, wherein the powder spraying part is fixedly connected to the recovery part, the spraying part comprises a support frame and a powder spraying gun arranged in the support frame, three sides of the support frame are provided with protective covers for preventing plastic powder from spreading, a base protective cover for collecting plastic powder is movably provided at the bottom of the support frame, and when starting work and when work is completed, the base protective cover and the above-mentioned protective cover form a sealed space; when officially working, the base protective cover is separated from the above-mentioned protective cover, and the fourth side and the fifth side of the support frame are connected to the recovery part. Under the action of the protective cover, the device can greatly reduce the escape of plastic powder during powder spraying, improve the cleanliness of the working environment, and further ensure the health of the staff, and the use of rollers can make the base protective cover move more smoothly, thereby improving the convenience of use.

Description

Technical Field

[0001] The invention relates to the technical field of large steel pipe processing, in particular to a FBE spray recovery mechanism in a large-diameter steel pipe and a spraying method thereof. Background Art

[0002] There are various processes for anti-corrosion treatment of pipeline surfaces, among which the coating obtained by uniformly spraying plastic powder in the plastic dip well has uniform texture and good anti-corrosion effect. However, the spraying process of this method is to blow up the plastic powder through compressed air, so that the plastic powder evenly fills the entire plastic dip well, and finally makes the plastic powder evenly adhere to the surface of the pipeline. However, due to the large amount of powder spraying, the powder that is not adsorbed to the pipe wall will float in the air, causing pollution and harm to the environment and workers, and at the same time increasing the production cost invisibly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a FBE spray recovery mechanism and a spraying method for a large-diameter steel pipe. The protective cover can effectively prevent the plastic powder from escaping everywhere and improve the cleanliness of the working environment. At the same time, the base shield can collect excess plastic powder to reduce costs, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a FBE spraying and recovery mechanism in a large-diameter steel pipe, comprising a powder spraying part and a recovery part, wherein the powder spraying part is fixedly connected to the recovery part, the spraying part comprises a support frame and a powder spraying gun arranged in the support frame, and the three sides of the support frame are provided with protective covers for preventing the diffusion of plastic powder, and a base guard for collecting plastic powder is movably provided at the bottom of the support frame, and when not in operation, the base guard and the above-mentioned protective cover form a sealed space; when in operation, the base guard is separated from the above-mentioned protective cover, and the support frame is connected to the recovery part, and the recovery part is used to recover the plastic powder dispersed in the protective cover.

[0005] As a preferred technical solution of the present invention, the support frame adopts a concave structure, and the concave side surfaces of the support frame are respectively provided with a first connecting plate and a second connecting plate.

[0006] As a preferred technical solution of the present invention, the number of the first connecting plates is two, the two first connecting plates are symmetrically arranged on the sides of the supporting frame, and the first connecting plate and the second connecting plate are both fixedly connected to the recovery part.

[0007] As a preferred technical solution of the present invention, a bracket shaft is arranged in the support frame, and the bracket shaft is fixedly connected to the powder spray gun through a powder spray gun fixing block.

[0008] As a preferred technical solution of the present invention, the number of the powder spray gun fixing blocks is twelve, and the twelve powder spray gun fixing blocks are divided into three groups, and the three groups of powder spray gun fixing blocks are arranged at intervals on the outer side surface of the bracket shaft.

[0009] As a preferred technical solution of the present invention, a cylinder is provided on one side of the base shield, and rollers are provided on the second and third sides of the base shield, and the rollers are closely arranged to the shield.

[0010] As a preferred technical solution of the present invention, a first fixing plate and a second fixing plate are provided at both ends of the cylinder, the second fixing plate is fixedly connected to the supporting frame, and the first fixing plate is fixedly connected to the recovery part.

[0011] As a preferred technical solution of the present invention, the recovery part is a hollow square steel cantilever equipped with a dust collection device.

[0012] A spraying method for FBE spraying inside a large diameter steel pipe, the steps are as follows:

[0013] S1: When the machine starts working, the cylinder extends and the base shield moves to the bottom of the protective cover to collect the plastic powder;

[0014] S2: The powder spraying device is started, and the powder spraying gun begins to spray powder. After the powder spraying is stable, the steel pipe is moved under the base shield;

[0015] S3: When in formal operation, the cylinder contracts, the base shield is retracted, and the powder spraying gun sprays powder on the inner wall of the steel pipe. At the same time, the dust collection device at one end of the hollow square steel cantilever works to recover the plastic powder scattered in the protective cover;

[0016] S4: When the powder spraying is completed, the powder spraying device stops, the cylinder extends, and the base shield moves to the bottom of the protective cover to collect the plastic powder remaining in the powder spray gun.

[0017] Compared with the prior art, the beneficial effects of the present invention are: under the action of the protective cover, the device can greatly reduce the escape of plastic powder during the powder spraying process, improve the cleanliness of the working environment, and thus ensure the health of the staff; the first connecting plate is convenient for connection with an external device; the use of rollers can make the base shield move more smoothly, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a front view of the structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the powder spraying part of the present invention;

[0021] Figure 4It is a schematic diagram of the bottom mechanism of the powder spraying unit.

[0022] In the figure: 1 powder spraying part, 11 second connecting plate, 12 first connecting plate, 13 supporting frame, 14 protective cover, 15 base cover, 16 powder spraying gun, 17 powder spraying gun fixing block, 18 second fixing plate, 19 bracket shaft, 110 roller, 111 cylinder, 112 first fixing plate, 2 recovery part. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the embodiment of the present invention). Figure 2 Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-4The present invention provides a technical solution: a FBE spray recovery mechanism in a large diameter steel pipe and a spraying method thereof, comprising a powder spraying part 1 and a recovery part 2, wherein the recovery part 2 is a hollow square steel cantilever equipped with a dust collecting device, and the hollow in the square steel can be used as a channel for recovering plastic powder, the powder spraying part 1 is fixedly connected to the recovery part 2, the spraying part 1 comprises a support frame 13 and a powder spray gun 16 arranged in the support frame 13, a support shaft 19 is arranged in the support frame 13, and the support shaft 19 is fixedly connected to the powder spray gun 16 through a powder spray gun fixing block 17, and the powder spray gun fixing block 7 adopts an easily disassembled structure, which is easy to disassemble and improves the convenience of use. The number of the powder gun fixing blocks 17 is twelve, and the twelve powder gun fixing blocks 17 are divided into three groups. The three groups of powder gun fixing blocks 17 are arranged at intervals on the outer side of the bracket shaft 19 to increase the powder spraying area and thus improve the powder spraying efficiency. The support frame 13 adopts a concave structure, and the concave sides of the support frame 13 are respectively provided with a first connecting plate 12 and a second connecting plate 11. The first connecting plate 12 and the second connecting plate 11 are convenient for connecting with the recovery part 2 and are easy to disassemble and assemble. The number of the first connecting plates 12 is two, and the two first connecting plates 12 are symmetrically arranged on the side of the support frame 13. The first connecting plate 12 and the second connecting plate 11 are convenient for connecting with the recovery part 2 and are easy to disassemble and assemble. The plates 11 are fixedly connected to the recovery part 2, and protective covers 14 for preventing the plastic powder from spreading are arranged on the three sides of the support frame 13. A base shield 15 for collecting plastic powder is movably arranged at the bottom of the support frame 13, and a cylinder 111 is arranged on one side of the base shield 15. A first fixed plate 112 and a second fixed plate 18 are arranged at both ends of the cylinder 111. The second fixed plate 18 is fixedly connected to the support frame 13, and the first fixed plate 112 is fixedly connected to the recovery part 2. The first fixed plate 112 and the second fixed plate 18 play the role of fixing the cylinder 111. The cylinder 111 controls the extension and retraction of the base shield 15. The base shield 1 The second side and the third side of the support frame 13 are both provided with rollers 110, and the rollers 110 are closely arranged with the protective cover 14. The use of the rollers 110 can make the base protective cover 14 move more smoothly, improve the convenience of use, and when starting and completing work, the base protective cover 15 and the above-mentioned protective cover 14 form a sealed space; when officially working, the base protective cover 15 is separated from the above-mentioned protective cover 14, and the fourth side and the fifth side of the support frame 13 are both connected with the recovery part 2. The recovery part 2 is used to recover the plastic powder scattered in the protective cover 14. The device can greatly reduce the dispersion of plastic powder, improve the cleanliness of the working environment, and thus ensure the health of the staff.

[0025] During use: the powder spraying gun 16 is connected to the external powder spraying device, the cylinder 111 is started, the telescopic shaft of the cylinder 111 is extended, the base shield 15 moves forward and moves to the bottom of the powder spraying gun 16, the powder spraying device is started, and the powder spraying gun 16 sprays powder. After the powder spraying is stable, the external moving device moves the steel pipe to the bottom of the base shield 15, the telescopic shaft of the cylinder 111 is shortened, and the base shield 15 moves backward, so as to spray powder on the inner wall of the steel pipe. At the same time, the dust collection device at one end of the hollow square steel cantilever works to recover the plastic powder scattered in the protective cover 14, and further prevent the plastic powder from escaping. After the work is completed, the powder spraying device stops, the telescopic shaft of the cylinder 112 is extended, and the base shield 10 moves forward and moves to the bottom of the powder spraying gun 6, and the plastic powder remaining in the powder spraying gun 6 all flows into the base shield 10, thereby completing the work.

[0026] The present invention can effectively prevent plastic powder from escaping, which is beneficial to environmental protection and can greatly reduce the harm of plastic powder particles to people's health. The base shield 10 can conveniently collect plastic powder and reduce the waste of plastic powder, thereby saving costs. The use of the roller 14 can make the base shield 10 move more smoothly and improve the convenience of use; the powder spray gun fixing block 7 adopts an easy-to-disassemble structure, which is easy to disassemble and convenient for later maintenance and overhaul.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A FBE spray recovery mechanism in a large diameter steel pipe, comprising a powder spraying part (1) and a recovery part (2), wherein the powder spraying part (1) and the recovery part (2) are fixedly connected, and characterized in that: The powder spraying part (1) comprises a support frame (13) and a powder spraying gun (16) arranged in the support frame (13); three sides of the support frame (13) are provided with protective covers (14) for preventing the plastic powder from spreading; a base protective cover (15) for collecting the plastic powder is movably arranged at the bottom of the support frame (13); and when not in operation, the base protective cover (15) and the protective cover (14) form a sealed space; The recovery part (2) is a hollow square steel cantilever equipped with a dust collection device; A cylinder (111) is provided on one side of the base shield (15), and rollers (110) are provided on the second and third sides of the base shield (15), and the rollers (110) are arranged close to the protective cover (14); when working, the base shield (15) is separated from the protective cover (14), and the support frame (13) is connected to the recovery part (2), and the recovery part (2) is used to recover the plastic powder scattered in the protective cover (14); when the powder spraying part (1) stops working, the telescopic shaft of the cylinder is extended, and the base shield moves forward to the bottom of the powder spraying gun, and the plastic powder remaining in the powder spraying gun flows into the base shield, thereby completing the work.

2. According to claim 1, a FBE spray recovery mechanism in a large diameter steel pipe is characterized by: The support frame (13) adopts a concave structure, and the concave side surfaces of the support frame (13) are respectively provided with a first connecting plate (12) and a second connecting plate (11).

3. The FBE spray recovery mechanism in a large diameter steel pipe according to claim 2, characterized in that: The number of the first connecting plates (12) is two, and the two first connecting plates (12) are symmetrically arranged on the side of the supporting frame (13), and the first connecting plate (12) and the second connecting plate (11) are both fixedly connected to the recovery part (2).

4. The FBE spray recovery mechanism in a large diameter steel pipe according to claim 1, characterized in that: A support shaft (19) is arranged in the support frame (13), and the support shaft (19) is fixedly connected to the powder spray gun (16) via a powder spray gun fixing block (17).

5. The FBE spray recovery mechanism in a large diameter steel pipe according to claim 4, characterized in that: The number of the powder spray gun fixing blocks (17) is twelve, and the twelve powder spray gun fixing blocks (17) are divided into three groups. The three groups of powder spray gun fixing blocks (17) are arranged at intervals on the outer side surface of the bracket shaft (19).

6. The FBE spray recovery mechanism in a large diameter steel pipe according to claim 1, characterized in that: A first fixing plate (112) and a second fixing plate (18) are provided at both ends of the cylinder (111); the second fixing plate (18) is fixedly connected to the support frame (13); and the first fixing plate (112) is fixedly connected to the recovery portion (2).

7. A method for spraying FBE inside a large diameter steel pipe based on the FBE spray recovery mechanism inside a large diameter steel pipe as described in any one of claims 1 to 6, characterized in that: Here are the steps: S1: When the machine starts working, the cylinder (111) is extended, and the base shield (15) moves to the bottom of the protective cover (14) to collect the plastic powder; S2: The powder spraying device is started, and the powder spraying gun (16) starts spraying powder. After the powder spraying is stable, the steel pipe is moved to the bottom of the base shield (15); S3: When in formal operation, the cylinder (111) contracts, the base shield (15) is retracted, and the powder spraying gun (16) sprays powder on the inner wall of the steel pipe. At the same time, the dust collecting device at one end of the hollow square steel cantilever works to recover the plastic powder scattered in the protective cover (14); S4: When the powder spraying is completed, the powder spraying device stops, the cylinder (111) extends, and the base shield (15) moves to the bottom of the protective cover (14) to collect the plastic powder remaining in the powder spraying gun (16).

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