A metal material surface anti-corrosion treatment equipment and a treatment process thereof

Abstract

The application discloses a metal material surface anti-corrosion treatment equipment and a treatment process applied to the anti-corrosion technical field. The inner coating device is arranged in the pipe, and the corrosion inhibitor and gas are injected into the inner coating soft sleeve, the gas enters the inner side of the inner layer cloth, and the inner layer cloth is inflated outward, so that the whole coating soft sleeve is expanded outward, the liquid absorption layer with the corrosion inhibitor is in contact with the inner wall of the pipe to be coated, and the soft filler is soft and plastic. Under the gas filling, the liquid absorption layer continues to push the liquid absorption layer into the mesh hole of the pipe, and is in contact with the inner wall of the hole. Through the circulating gas filling and exhausting process, the liquid absorption layer repeatedly contacts the inner wall of the pipe and the inner wall of the hole, realizes the full coating process of the two, and simultaneously sets the outer coating device on the outer side of the pipe. While the outer part of the pipe is synchronously anticorrosion, the liquid absorption layer in the mesh hole can be pressed, the inflated liquid absorption layer can be more fully filled in the mesh hole, and the anti-corrosion coating speed and effect of the metal mesh pipe are further improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of corrosion prevention technology, in particular to a metal material surface corrosion prevention treatment equipment and a treatment process thereof. BACKGROUND

[0002] Corrosion prevention refers to chemical reactions caused by the influence of the use environment on materials during transportation and use. Corrosion causes great damage to metal pipes, and a tiny local corrosion quickly causes the entire material to be scrapped through diffusion and erosion to the surrounding, so surface corrosion prevention treatment of the material is extremely important.

[0003] Pipe surface corrosion prevention includes external corrosion prevention and internal corrosion prevention, and the corrosion prevention of the inner surface and the outer surface is equally important. In the prior art, a film forming method is usually used to form a corrosion prevention layer on the inner wall of the pipe, that is, a traction equipment is used to drive a spraying device to move along the inner wall of the pipe, and the spraying device sprays corrosion inhibitors on the inner wall of the pipe during movement through rotation.

[0004] However, when the surface of the mesh pipe is coated for corrosion prevention, the mesh holes on the pipe are numerous and uniformly dense, and it is difficult to coat the inner wall of the mesh hole whether for external corrosion prevention or for internal corrosion prevention, so that the corrosion prevention performance of the inner wall of the mesh hole is poor, which affects the service life of the entire mesh pipe. SUMMARY

[0005] The application aims to solve the problem that the overall corrosion prevention performance of the existing mesh pipe is poor due to the difficulty in coating the inner wall of the mesh hole during corrosion prevention, which affects the overall service life. Compared with the prior art, the application provides a metal material surface corrosion prevention treatment equipment and a treatment process thereof. The inner coating device and the outer coating device are arranged, the inner coating device comprises a horizontal column, the outer end of the horizontal column is fixedly connected with a main scraper and a secondary scraper, a coating soft sleeve is arranged between the main scraper and the secondary scraper, both ends of the coating soft sleeve are fixedly connected to the outer end of the horizontal column, the coating soft sleeve comprises an inner layer cloth, a middle layer film and an outer layer mesh which are sequentially arranged from inside to outside, soft fillers are filled between the inner layer cloth and the middle layer film, a liquid cavity is arranged in the horizontal column, a plurality of liquid holes are arranged in the inner wall of the liquid cavity, the orifices of the liquid holes are located between the middle layer film and the outer layer mesh, and a liquid delivery pipe and a gas delivery pipe are fixedly connected to the end of the horizontal column away from the secondary scraper.

[0006] By setting the inner coating device inside the pipe and injecting the corrosion inhibitor and gas into the inner coating sleeve, the corrosion inhibitor is absorbed by the liquid absorption layer through the outer mesh, while the gas enters the inner side of the inner layer cloth, making it bulge outward, realizing the outward expansion of the entire coating sleeve, so that the liquid absorption layer contacts the inner wall of the pipe to be coated, and the soft filler is soft and plastic, which continues to push the liquid absorption layer into the inner hole of the mesh on the pipe under the filling of the gas, and contacts the inner wall of the hole, so that the liquid absorption layer repeatedly contacts the inner wall of the pipe and the inner wall of the hole through the cycle of filling and pumping, realizing the full coating process of the two, in addition, the outer coating device is set on the outer side of the pipe at the same time, which can realize the pressing of the liquid absorption layer squeezed into the mesh, so that the bulging liquid absorption layer can be more fully filled in the mesh, further improving the corrosion prevention coating rate and effect of the metal mesh pipe.

[0007] Optionally, the infusion tube is fixedly penetrated through the cross column and communicates with the liquid cavity, the cross column is provided with a gas channel at the end away from the auxiliary scraper, and one end of the gas conveying pipe is fixedly connected to the inner side of the gas channel.

[0008] Optionally, the outer surface of the outer mesh is fixedly connected with a liquid absorption layer.

[0009] Optionally, the outer coating device comprises a hollow ball, the inner end of the hollow ball is provided with a material cavity, the slot inner wall of the material cavity is fixedly connected with a hard mesh and a liquid storage cotton, and the liquid storage cotton is located on the inner side of the hard mesh and is fixedly connected with the hard mesh.

[0010] Optionally, the outer end of the hollow ball is fixedly connected with a pair of traction belts, and the end of the auxiliary scraper away from the cross column is fixedly connected with a traction rope.

[0011] Optionally, the outer end of the hollow ball is fixedly connected with a feeding pipe communicated with the material cavity, and the outer end of the feeding pipe is threadedly connected with a pipe cover.

[0012] Optionally, the inner layer cloth, the middle layer film and the outer layer mesh are all made of elastic material.

[0013] Optionally, the distance between the main scraper and the auxiliary scraper is less than the length of the liquid storage cotton.

[0014] A processing process of a metal material surface corrosion prevention treatment equipment, comprising the following steps:

[0015] S1, the inner coating device is installed in the metal mesh pipe to be coated, the end of the traction rope away from the auxiliary scraper is connected with the external traction device, the end of the liquid conveying pipe is connected with the material outlet end of the material conveying device, and the end of the gas conveying pipe is connected with the gas outlet end of the gas pump;

[0016] S2, at this time, the inner coating device is in a static state in the metal mesh pipe, the feeding device and the air pump are started, the feeding device inputs the corrosion inhibitor into the inner cavity of the liquid chamber, and the corrosion inhibitor enters between the middle layer film and the outer layer mesh through the liquid hole, the air pump inputs the air into the inner side of the inner layer cloth, the coating sleeve expands outward, contacts the inner wall of the metal mesh pipe, and is extruded into the mesh hole of the metal mesh pipe and contacts the inner wall of the mesh hole;

[0017] S3, after the coating sleeve is fully expanded, the air is extracted, the coating sleeve shrinks to the inner side of the pipe, and then the inflation operation is performed again, and the inflation and shrinkage process of the coating sleeve is repeated, so that the inner wall and the mesh hole of the metal mesh pipe are synchronously coated.

[0018] S4, after the coating process in the above position is completed, the traction device is started to drive the inner coating device to slowly move a certain distance along the inner wall of the pipe to the next position, the traction device is automatically turned off, and S2 and S3 are repeated to coat the inner wall and the mesh hole of the pipe at the position.

[0019] S5, repeat S4 until the inner wall and the mesh hole of the metal mesh pipe are completely coated.

[0020] Optionally, the following operation is further included: before step S2 is performed, the hollow sleeve is arranged at the outer end of the metal mesh pipe and located outside the inner coating device, a sufficient amount of corrosion inhibitor is added to the inside of the hollow sleeve, the traction belt is also connected with the traction device to be in a synchronous movement and static state with the inner coating device, and the outer wall of the metal mesh pipe is coated.

[0021] Compared with the prior art, the application has the following advantages:

[0022] (1) The application sets the inner coating device in the pipe, injects the corrosion inhibitor and the air into the inside of the coating sleeve, the corrosion inhibitor is absorbed by the liquid absorption layer through the outer layer mesh, at the same time, the air enters the inner side of the inner layer cloth to make the inner layer cloth expand outward, the entire coating sleeve expands outward to make the liquid absorption layer contact the inner wall of the pipe to be coated, the soft filler is soft and plastic, and the liquid absorption layer continues to be extruded into the mesh hole of the pipe under the filling of the air to contact the inner wall of the hole, the liquid absorption layer repeatedly contacts the inner wall of the pipe and the inner wall of the hole through the circulation of the inflation and deflation process, and the coating process of the two is fully realized.

[0023] (2) The outer coating device is arranged on the outer side of the pipe, on one hand, the synchronous coating process of the inner wall, the outer wall and the mesh hole of the metal mesh pipe is realized, and on the other hand, the liquid absorption layer extruded into the mesh hole is pressed by the liquid storage cotton on the outer side of the metal mesh pipe, so that the liquid absorption layer is not easily extruded to the outer side of the mesh hole, the liquid absorption layer can be more fully filled in the mesh hole under the blockage of the liquid storage cotton, and the corrosion coating rate and effect of the metal mesh pipe are further improved.

[0024] (3) The inner and outer applicators can be used separately, and in addition to the inner and outer corrosion protection of the metal mesh pipe, they can also be used in the corrosion protection process of other pipes, such as straight pipes, corrugated pipes, etc., and the usage mode remains unchanged. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of the present application;

[0026] Figure 2 is a perspective view of the inner applicator of the present application;

[0027] Figure 3 is a side structural schematic view of the inner applicator of the present application;

[0028] Figure 4 is a structural schematic view of Figure 3 A;

[0029] Figure 5 is a perspective view of the outer applicator of the present application;

[0030] Figure 6 is a side structural schematic view of the outer applicator of the present application;

[0031] Figure 7 is a side structural schematic view of the inner applicator and the outer applicator of the present application when used simultaneously Figure 1 ;

[0032] Figure 8 is a side structural schematic view of the inner applicator and the outer applicator of the present application when used simultaneously Figure 2 ;

[0033] Figure 9 is a side structural schematic view of the inner applicator and the outer applicator of the present application when used simultaneously Figure 3 ;

[0034] Figure 10 is a side structural schematic view of the inner applicator and the outer applicator of the present application when used separately.

[0035] REFERENCE NUMERALS IN DRAWINGS:

[0036] 1 transverse column, 101 liquid cavity, 102 liquid hole, 103 gas passage, 2 main scraper, 3 auxiliary scraper, 4 coating soft sleeve, 41 inner layer cloth, 42 middle layer film, 43 soft filler, 44 outer layer mesh, 45 liquid absorption layer, 5 hollow ball, 501 material cavity, 6 traction rope, 7 liquid delivery pipe, 8 gas delivery pipe, 9 hard mesh, 10 liquid storage cotton, 11 traction belt. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application. Embodiments

[0038] Please refer to Figure 1 and Figure 2 The present application discloses a kind of metal material surface anticorrosion treatment equipment and its processing technology, including inner coating device, inner coating device includes cross column 1, the outer end of cross column 1 is fixedly connected with main scraper 2 and auxiliary scraper 3, main scraper 2 and auxiliary scraper 3 between being equipped with coating soft cover 4, the both ends of coating soft cover 4 are fixedly connected to the outer end of cross column 1, please refer to Figure 3 and Figure 4 Coating soft cover 4 includes inner layer cloth 41, middle layer film 42 and outer layer net 44 distributed sequentially from inside to outside, soft filler 43 is filled between inner layer cloth 41 and middle layer film 42, inner layer cloth 41, middle layer film 42 and outer layer net 44 are all made of elastic material, the outer surface of outer layer net 44 is fixedly connected with liquid absorption layer 45, the inside of cross column 1 is provided with liquid cavity 101, a plurality of liquid holes 102 are formed in the inner wall of liquid cavity 101, the orifice of liquid hole 102 is located between middle layer film 42 and outer layer net 44, the end of auxiliary scraper 3 away from cross column 1 is fixedly connected with traction rope 6, the end of cross column 1 away from auxiliary scraper 3 is fixedly connected with liquid delivery pipe 7 and gas delivery pipe 8.

[0039] Liquid delivery pipe 7 is fixedly penetrated through cross column 1 and communicated with liquid cavity 101, liquid delivery pipe 7 is used to inject corrosion inhibitor into liquid cavity 101, then corrosion inhibitor can enter between middle layer film 42 and outer layer net 44 through liquid hole 102, and be absorbed by liquid absorption layer 45 through the mesh hole of outer layer net 44, the end of cross column 1 away from auxiliary scraper 3 is provided with gas passage 103, one end of gas delivery pipe 8 is fixedly connected to the inside of gas passage 103, the orifice end of gas passage 103 away from gas delivery pipe 8 is located on the inside of inner layer cloth 41, gas delivery pipe 8 is used to inject gas into gas passage 103, then gas enters between inner layer cloth 41 and cross column 1, so that inner layer cloth 41 bulges outward, so as to realize the outward expansion of the whole coating soft cover 4, so that liquid absorption layer 45 contacts the inner wall of the pipe to be coated when the corrosion inhibitor is applied on the pipe.

[0040] A kind of metal material surface anticorrosion treatment equipment processing technology, comprising the following steps:

[0041] S1, the inner coating device is loaded into the metal mesh pipe to be coated (indicated by "N" in the figure), the end of traction rope 6 away from auxiliary scraper 3 is connected with external traction equipment, the end of liquid delivery pipe 7 is connected with the discharge end of liquid delivery equipment, and the end of gas delivery pipe 8 is connected with the gas outlet end of gas pump.

[0042] S2, at this time, the inner coating device is in a static state in the metal mesh pipe, the feeding device is started to input the corrosion inhibitor into the inner chamber 101, and the gas pump is started to input the air into the inner side of the inner layer cloth 41, so that the coating sleeve 4 expands outwardly, contacts the inner wall of the metal mesh pipe, and is squeezed into the mesh hole of the metal mesh pipe to contact the inner wall of the mesh hole;

[0043] S3, after the coating sleeve 4 is fully inflated, the gas is extracted to make the coating sleeve 4 shrink to the inner side of the pipe, and then the inflation operation is performed again, so that the inflation and shrinkage of the coating sleeve 4 is repeated, so that the inner wall and the mesh hole (the position represented by “n” in the figure) of the metal mesh pipe are synchronously coated;

[0044] S4, after the coating process of the above position is completed, the traction device is started to drive the inner coating device to slowly advance to the next position, and then the traction device is automatically turned off, and S2 and S3 are repeated to coat the inner wall and the mesh hole of the position;

[0045] S5, S4 is repeated until the inner wall and the mesh hole of the metal mesh pipe are completely coated.

[0046] The gas enters between the inner layer cloth 41 and the horizontal column 1 through the gas feeding pipe 8 and the gas passage 103, so that the inner layer cloth 41 bulges outwardly, as shown in Figure 7 and Figure 8 , on the one hand, the coating sleeve 4 as a whole approaches the inner wall of the pipe, until the liquid absorption layer 45 contacts the inner wall of the pipe, and on the other hand, as shown in Figure 9 , under the continuous filling of the gas, the inner layer cloth 41 continues to expand and bulge outwardly, and squeezes the soft filler 43 on the outer side, and through the softness and plasticity of the soft filler 43, the soft filler 43 drives the middle layer film 42 and the outer layer mesh 44 to squeeze into the mesh hole of the pipe, so that the liquid absorption layer 45 with the corrosion inhibitor contacts the inner wall of the mesh hole, and after the gas is extracted, the coating sleeve 4 is separated from the inner wall of the pipe; when the above inflation and extraction process is repeated, the liquid absorption layer 45 repeatedly contacts the inner wall of the pipe and the inner wall of the mesh hole, so that the coating process of the two is fully realized.

[0047] In step S4, when the coating of one position is completed, the main scraper 2 performs the scraping operation on the area coated with the corrosion inhibitor during the process of advancing the inner coating device to the next position, so that the corrosion inhibitor uniformly forms a corrosion-resistant film on the inner wall of the pipe. Embodiment

[0048] The difference between this embodiment and embodiment 1 is that an outer coating device is additionally provided on the basis of embodiment 1, and the specific process is as follows: please refer to Figure 5 and Figure 6The outer coating device comprises a hollow ball 5, an inner end of the hollow ball 5 is provided with a material cavity 501, a slot inner wall of the material cavity 501 is fixedly connected with a hard net 9 and a liquid storage cotton 10, the liquid storage cotton 10 is located at the inner side of the hard net 9 and is fixedly connected with the hard net 9, and the combination Figure 7 A distance between the main scraper 2 and the auxiliary scraper 3 is less than the length of the liquid storage cotton 10, an outer end of the hollow ball 5 is fixedly connected with a pair of traction belts 11, the outer end of the hollow ball 5 is fixedly connected with a feeding pipe communicated with the material cavity 501, and an outer end of the feeding pipe is threadedly connected with a pipe cover.

[0049] The use mode one is shown in the following Figure 9 Before the step S2, the hollow ball 5 is sleeved on the outer end of the metal mesh pipe and is located at the outer side of the inner coating device, a sufficient amount of corrosion inhibitor is added into the hollow ball 5, the traction belts 11 are also connected with the traction equipment, and the hollow ball 5 is in the synchronous movement and static state with the inner coating device, and the outer wall of the metal mesh pipe is coated;

[0050] Through the simultaneous use of the above-mentioned inner coating device and outer coating device, on the one hand, the synchronous coating process of the inner wall, the outer wall and the mesh hole of the metal mesh pipe can be realized, and on the other hand, through the liquid storage cotton 10 located at the outer side of the metal mesh pipe, the liquid absorption layer 45 squeezed into the mesh hole is pressed, so that the liquid absorption layer 45 is not easy to be excessively squeezed out of the outer side of the mesh hole, under the blockage of the liquid storage cotton 10, the bulged liquid absorption layer 45 can be more fully filled in the mesh hole, and the inner wall of the mesh hole is more fully and comprehensively coated without blind spot, so that the corrosion coating speed and effect of the metal mesh pipe are further improved.

[0051] The use mode two is shown in the following Figure 10 The outer coating device can also be used alone, and the external corrosion process can be realized for the metal mesh pipe or other pipes, and the inner coating device can be used for the corrosion process of other pipes, such as straight pipes and metal mesh pipes, and the use mode is unchanged.

[0052] In the application, the inner coating device is arranged in the pipe, the corrosion inhibitor and the gas are injected into the coating sleeve 4, the corrosion inhibitor is absorbed by the liquid absorption layer 45 through the outer layer net 44, at the same time, the gas enters the inner side of the inner layer cloth 41, the coating sleeve 4 is expanded outwardly, the liquid absorption layer 45 contacts the inner wall of the pipe to be coated, the soft filler 43 is soft and plastic, the liquid absorption layer 45 is continuously pushed into the mesh hole of the pipe under the filling of the gas, and the liquid absorption layer 45 contacts the inner wall of the pipe and the inner wall of the mesh hole repeatedly through the circulation of the gas filling and extraction process, so that the corrosion coating process of the inner wall of the pipe and the inner wall of the mesh hole is realized, in addition, the outer coating device is arranged on the outer side of the pipe synchronously, the outer wall of the pipe is coated synchronously, the liquid absorption layer 45 squeezed into the mesh hole is pressed, the bulged liquid absorption layer 45 can be more fully filled in the mesh hole, and the corrosion coating speed and effect of the metal mesh pipe are further improved.

[0053] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacements or changes according to the technical solution and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A metal material surface anti-corrosion treatment equipment, characterized in that, The invention comprises an inner coating device and an outer coating device, wherein the inner coating device comprises a horizontal column (1), the outer end of the horizontal column (1) is fixedly connected to a main scraper (2) and an auxiliary scraper (3), a coating soft sleeve (4) is provided between the main scraper (2) and the auxiliary scraper (3), both ends of the coating soft sleeve (4) are fixedly connected to the outer end of the horizontal column (1), and the coating soft sleeve (4) comprises an inner layer cloth (41), a middle layer membrane (42) and an outer layer net (44) which are sequentially distributed from the inside to the outside, the inner layer cloth (41), the middle layer membrane (42) and the outer layer net (44) 2) and the outer mesh (44) are made of elastic material, a soft filler (43) is filled between the inner cloth (41) and the middle membrane (42), a liquid cavity (101) is provided inside the cross column (1), a plurality of liquid holes (102) are provided on the inner wall of the liquid cavity (101), the openings of the liquid holes (102) are located between the middle membrane (42) and the outer mesh (44), and a liquid delivery tube (7) and an air delivery tube (8) are fixedly connected to one end of the cross column (1) away from the auxiliary scraper (3); The liquid delivery pipe (7) is fixedly passed through the horizontal column (1) and communicates with the liquid cavity (101); an air passage (103) is provided at one end of the horizontal column (1) away from the auxiliary scraper (3); one end of the air delivery pipe (8) is fixedly connected to the inside of the air passage (103); and the end of the air passage (103) away from the orifice of the air delivery pipe (8) is located on the inner side of the inner layer of cloth (41); The outer surface of the outer layer net (44) is fixedly connected to a liquid absorbing layer (45).

2. The metal material surface anti-corrosion treatment equipment according to claim 1, characterized in that: The outer coating device comprises a hollow ball (5), the inner end of the hollow ball (5) is provided with a material cavity (501), the inner wall of the slot of the material cavity (501) is fixedly connected with a hard net (9) and a liquid storage cotton (10), and the liquid storage cotton (10) is located on the inner side of the hard net (9), and the two are fixedly connected.

3. The metal material surface anti-corrosion treatment equipment according to claim 2, characterized in that: The outer end of the hollow ball (5) is fixedly connected to a pair of traction belts (11), and the end of the auxiliary scraper (3) away from the horizontal column (1) is fixedly connected to a traction rope (6).

4. The metal material surface anti-corrosion treatment equipment according to claim 2, characterized in that: The outer end of the hollow ball (5) is fixedly connected to a feeding pipe communicating with the material cavity (501), and the outer end of the feeding pipe is threadedly connected to a pipe cover.

5. The metal material surface anti-corrosion treatment equipment according to claim 2, characterized in that: The distance between the main scraper (2) and the auxiliary scraper (3) is smaller than the length of the liquid storage cotton (10).

6. The treatment process of a metal material surface anti-corrosion treatment equipment according to claim 3, characterized in that: The following steps are involved: S1. Install the inner coating device into the metal mesh tube to be coated, connect the end of the traction rope (6) away from the auxiliary scraper (3) to the external traction device, connect the end of the liquid delivery tube (7) to the discharge end of the delivery device, and connect the end of the air delivery tube (8) to the air outlet end of the air pump; S2. At this time, the inner coating device is in a stationary state in the metal mesh tube, and the feeding device and the air pump are started. The feeding device feeds the corrosion inhibitor into the interior of the liquid cavity (101), and enters between the middle layer membrane (42) and the outer layer mesh (44) through the liquid hole (102). The air pump feeds air into the inner side of the inner layer cloth (41), so that the coating soft sleeve (4) expands outward, contacts the inner wall of the metal mesh tube, and squeezes into the mesh of the metal mesh tube, contacting the inner wall of the mesh; S3, after the coating soft sleeve (4) is fully expanded, the gas is extracted to shrink the coating soft sleeve (4) toward the inside of the tube, and then the inflation operation is started again, and this is repeated, and the inner wall and mesh of the metal mesh tube are synchronously coated through the multiple expansion and contraction processes of the coating soft sleeve (4); S4. After the coating process at the above position is completed, the traction device is started to drive the inner coating device to slowly advance a certain distance along the inside of the pipe to the next position. The traction device is automatically closed and S2 and S3 are repeated to coat the inner wall and mesh of the pipe at this position. S5. Repeat S4 until the inner wall and mesh of the metal mesh tube are completely coated.

7. The treatment process of a metal material surface anti-corrosion treatment equipment according to claim 6, characterized in that: The method further includes the following operations: before performing step S2, the hollow ball (5) is placed on the outer end of the metal mesh tube and located outside the inner coating device, a sufficient amount of corrosion inhibitor is added to the interior of the hollow ball (5), and the traction belt (11) is also connected to the traction device so that it and the inner coating device are in a synchronous moving and stationary state, and the outer wall of the metal mesh tube is coated.

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