CN113731763A - Three-station fluidized tank anticorrosive coating equipment and coating process - Google Patents
Three-station fluidized tank anticorrosive coating equipment and coating process Download PDFInfo
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- CN113731763A CN113731763A CN202111074294.9A CN202111074294A CN113731763A CN 113731763 A CN113731763 A CN 113731763A CN 202111074294 A CN202111074294 A CN 202111074294A CN 113731763 A CN113731763 A CN 113731763A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
- B05D1/24—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
- B05D3/0236—Pretreatment, e.g. heating the substrate with ovens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2254/00—Tubes
- B05D2254/02—Applying the material on the exterior of the tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2507/00—Polyolefins
- B05D2507/01—Polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2507/00—Polyolefins
- B05D2507/02—Polypropylene
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Abstract
The invention relates to the technical field of pipeline corrosion prevention, in particular to three-station fluidized tank corrosion prevention coating equipment and a coating process, wherein the equipment comprises the following components: the device comprises a fluidization groove I, a fluidization groove II, a fluidization groove III and a steel pipe transmission device; the steel pipe transmission device consists of a support pipe bracket and a metal track, and the support pipe bracket is used for supporting a steel pipe; the fluidization groove I, the fluidization groove II and the fluidization groove III are sequentially arranged on the metal track. The steel pipe does not need to be sprayed step by step, and after the steel pipe is immersed in the fluidized tank, the steel pipe rotates for several circles to form an anticorrosive coating on the surface, so that the production efficiency is high; after the steel pipe is preheated for the first time, the temperature of the surface of the steel pipe is controlled, and the leveling of the epoxy powder, the adhesive powder and the special material powder on the surface of the steel pipe can be realized without adding a post-leveling process; the setting and the process are suitable for three-layer corrosion prevention of the socket steel pipe with a pipe end provided with a bearing head and a plug and a pipe body provided with a lifting lug.
Description
Technical Field
The invention relates to the technical field of pipeline corrosion prevention, in particular to three-station fluidized tank corrosion prevention coating equipment and a coating process.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The 3PE/3PP three-layer anticorrosion of the steel pipe is one of the currently recognized best anticorrosion modes, and in the prior art, a three-layer anticorrosion structure is mainly formed by extruding and coating an adhesive after electrostatic spraying epoxy, extruding and coating a special material (suitable for steel pipes below dn 426) or extruding and winding the adhesive laterally and extruding and winding the special material (suitable for steel pipes above dn 219) after electrostatic spraying epoxy. However, due to the existence of the welding seam of the steel pipe, the three-layer corrosion prevention can cause the defects of the thinning of the corrosion prevention layer at the welding seam of the pipe body and the gap between the epoxy layer and the adhesive layer on the back of the welding seam, and the full-powder three-layer corrosion prevention is produced at the same time in order to solve the defects of the corrosion prevention process, but the realization of the full-powder three-layer corrosion prevention process is always a difficult problem in the industry.
The inventor finds that the process maturity of the full-powder three-layer anticorrosion in the prior art is not high, and the main effects are that the epoxy curing is fast, and the leveling of the adhesive powder and the special material powder is slow, so that the anticorrosion effect is poor. The prior art researches disclose full-powder 3PE anticorrosion equipment, wherein electrostatic spraying is adopted on epoxy powder, fluidized bed technology is adopted on adhesive powder and polyethylene special material powder, the gelling time of the epoxy powder is short, the process is easy to cause that the curing degree of the epoxy powder on the surface of a pipe is different and the epoxy powder can not chemically react with the adhesive, so that the uniformity of the peeling strength is poor, a certain time is required for spraying the epoxy on the surface of the whole steel pipe, the firstly sprayed epoxy is completely cured and can not chemically react with anhydride of the adhesive, and the later sprayed pipe is not sprayed; the scheme also has the problem that the epoxy gelling time is short, so that the prior spraying can cause solidification to cause low stripping strength between anticorrosive layers; the research discloses a full-powder 3PE anticorrosion process, wherein an electrostatic spraying process is adopted for epoxy powder, adhesive powder and polyethylene powder, the epoxy powder is easy to melt, level and solidify at the pipeline temperature due to low molecular weight, but the adhesive powder and the polyethylene powder have high melting points and have the characteristic of poor leveling property after being thick, and the three anticorrosion layers are easy to have the problems of poor leveling property and low adhesive force due to micropores in the layers.
Disclosure of Invention
The invention provides three-station fluidized tank anticorrosive coating equipment and a coating process, aiming at the problems of poor leveling property, low peeling strength and low processing efficiency of three-layer composite anticorrosive layers caused by fast curing of epoxy powder and slow leveling of adhesive powder and special material powder in the prior art, and the invention provides three-station fluidized tank anticorrosive coating equipment and a coating process.
In order to achieve the above object, the technical solution of the present invention is as follows:
in a first aspect of the present invention, there is provided a three-station fluidized tank anticorrosive coating apparatus comprising: the device comprises a fluidization groove I, a fluidization groove II, a fluidization groove III and a steel pipe transmission device; the steel pipe transmission device consists of a support pipe bracket and a metal track, and the support pipe bracket is used for supporting a steel pipe; the fluidization groove I, the fluidization groove II and the fluidization groove III are sequentially arranged on the metal track.
In a second aspect of the present invention, there is provided a three-layer anticorrosive coating process, which is completed by the above three-station fluidized tank anticorrosive coating apparatus, comprising the steps of: heating the steel pipe subjected to surface treatment until the surface temperature reaches the expectation, transmitting the preheated steel pipe to the upper part of the epoxy powder fluidization groove through a steel pipe transmission device, lifting the epoxy powder fluidization groove to be in contact with the steel pipe, rotating the steel pipe, adhering epoxy powder on the surface by means of the heat of the steel pipe, reducing the fluidization groove to enable the steel pipe to continue to rotate and level, and forming an epoxy anticorrosive coating after leveling; and then the steel pipe passes through a polyolefin adhesive powder fluidization tank and a polyolefin special material powder fluidization tank to be sequentially coated with the polyolefin adhesive powder and the polyolefin special material powder, and the three-layer anticorrosive plastic-coated steel pipe is obtained after leveling and cooling.
Compared with the electrostatic spraying equipment process in the prior art, the three-station fluidized tank anticorrosive coating equipment and the coating process have the advantages that the steel pipe does not need to be sprayed step by step, and after being immersed in the fluidized tank, the steel pipe rotates for several weeks to form an anticorrosive coating on the surface, so that the production efficiency is high; after the steel pipe is preheated for the first time, the temperature of the surface of the steel pipe is controlled, and the leveling of the epoxy powder, the adhesive powder and the special material powder on the surface of the steel pipe can be realized without adding a post-leveling process; the equipment and the process can be suitable for three-layer corrosion prevention of steel pipes with different calibers, in particular to three-layer corrosion prevention of socket steel pipes with pipe ends provided with bell heads and plugs and pipe bodies provided with lifting lugs, and can solve the industrial problems that the existing socket steel pipes are uneven due to the socket of the pipe ends, and the pipe bodies have the lifting lugs for applying acting force in pipe installation, so that the traditional coating process or winding extrusion process cannot be adopted for three-layer corrosion prevention.
The specific embodiment of the invention has the following beneficial effects:
1) compared with the existing full-powder anticorrosion equipment and process, the equipment and process provided by the invention are quick in anticorrosion, the three-station fluidizing tank is adopted, the steel pipe is combined to be provided with a circular structure with a specific fixed length, and the length of the fluidizing tank is matched with the length of the steel pipe, so that the preheated steel pipe is immersed into the corresponding fluidizing tank when the epoxy powder, the adhesive powder and the special material powder are coated, a uniform anticorrosion layer is formed on the surface of the steel pipe through the rotation of the steel pipe and the heat of the pipe body, compared with an electrostatic spraying process, the steel pipe does not need to be sprayed step by step, and the anticorrosion coating is formed on the surface of the steel pipe after the steel pipe is immersed into the fluidizing tank after rotating for several weeks, so that the production efficiency is high.
2) Compared with the prior art, the equipment and the process have low energy consumption, and the leveling of the epoxy powder, the adhesive powder and the special material powder on the surface of the steel pipe can be realized by preheating the steel pipe once and controlling the temperature of the surface of the steel pipe without adding a post-leveling process.
3) Compared with the prior art, the equipment and the process can be suitable for three-layer corrosion prevention of steel pipes with different calibers, particularly for three-layer corrosion prevention of socket steel pipes with pipe ends provided with bell heads and plugs and pipe bodies provided with lifting lugs, and can solve the industrial problems that the existing socket steel pipes are uneven due to the bell mouths at the pipe ends, the pipe bodies have the lifting lugs for applying acting force in pipe installation, and 3PE corrosion prevention can not be carried out by adopting the traditional coating process or winding extrusion process.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of the composition of a three-station fluidized tank coating apparatus of the present invention;
FIG. 2 is a schematic diagram of the composition of the fluidization tank of the present invention;
FIG. 3 is a schematic diagram of the steel tube transmission device of the present invention;
FIG. 4 is a schematic view of the three-layer anticorrosive coating process of the present invention;
in the figure, 1, fluidization grooves I, 2, fluidization grooves II, 3, fluidization grooves III, 4, steel pipe transmission devices 5, steel pipes 6 and a supporting pipe bracket; 11. the device comprises a hydraulic lifting column, 12, a fluidization plate with micropores, 13, a fan, 14, a groove body, 15, a base, 41, an opening and closing motor, 42, a limiting roller, 43, a support rotating motor, 44, a steel pipe moving motor, 45 and a metal track.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In one embodiment of the present invention, there is provided a three-station fluidized tank anticorrosive coating apparatus, including: the device comprises a fluidization groove I, a fluidization groove II, a fluidization groove III and a steel pipe transmission device; the steel pipe transmission device consists of a support pipe bracket and a metal track, and the support pipe bracket is used for supporting a steel pipe; the fluidization groove I, the fluidization groove II and the fluidization groove III are sequentially arranged on the metal track;
furthermore, the supporting pipe bracket is arranged at one end of the metal track, and a fluidization groove I, a fluidization groove II and a fluidization groove III are arranged on the metal track relative to one end of the supporting pipe bracket;
in one or more embodiments of the invention, the support tube bracket is of an upper-layer structure and a lower-layer structure, two limiting rollers are arranged on the upper layer of the support tube bracket, and the steel pipe is placed between the two limiting rollers on the upper layer of the support tube bracket;
further, the support pipe bracket can slide along the metal track, so that the steel pipe is moved to the positions above the fluidization groove I, the fluidization groove II and the fluidization groove III;
furthermore, an opening and closing motor and a support rotating motor are arranged on the upper layer of the support supporting frame, and the opening and closing motor is used for controlling the distance between two limiting rollers on the support supporting frame to support steel pipes with different diameters; the rotation of the steel pipe is controlled through the rotation of the bracket rotating motor; the lower layer of the pipe supporting bracket is provided with a steel pipe moving motor, and the steel pipe is controlled to move among the three fluidization grooves through the rotation of the steel pipe moving motor.
In one or more embodiments of the invention, the fluidization tank I, the fluidization tank II, and the fluidization tank III are powder fluidization tanks;
in one or more embodiments of the invention, a fluidization plate with micropores is arranged on a groove body of the powder fluidization groove, the groove body is connected with a fan, and powder is suspended into a fluidization state through the fluidization plate with micropores by blowing air through the fan;
further, the groove body of the powder fluidization groove is arranged on the base; furthermore, four hydraulic lifting columns are arranged on the base of the powder fluidization groove;
in one or more embodiments of the invention, the fluidization tank I is an epoxy powder fluidization tank, the fluidization tank II is a polyolefin adhesive powder fluidization tank, and the fluidization tank III is a polyolefin special material powder fluidization tank.
In one embodiment of the present invention, a three-layer anticorrosive coating process is provided, which is completed by the three-station fluidized tank anticorrosive coating apparatus, and comprises the following steps: heating the steel pipe subjected to surface treatment until the surface temperature reaches the expectation, transmitting the preheated steel pipe to the upper part of the epoxy powder fluidization groove through a steel pipe transmission device, lifting the epoxy powder fluidization groove to be in contact with the steel pipe, rotating the steel pipe, adhering epoxy powder on the surface by means of the heat of the steel pipe, reducing the fluidization groove to enable the steel pipe to continue to rotate and level, and forming an epoxy anticorrosive coating after leveling; and then the steel pipe passes through a polyolefin adhesive powder fluidization tank and a polyolefin special material powder fluidization tank to be sequentially coated with the polyolefin adhesive powder and the polyolefin special material powder, and the three-layer anticorrosive plastic-coated steel pipe is obtained after leveling and cooling.
In one or more embodiments of the invention, the surface temperature of the steel tube above the epoxy powder fluidization tank is 200-;
heating the steel pipe in a heating furnace at 300 ℃, moving the steel pipe above the fluidization groove when the surface temperature of the steel pipe reaches about 250 ℃, slowly cooling the surface of the steel pipe, testing the surface temperature of the steel pipe through a temperature measuring meter, and starting coating the first layer of epoxy powder when the surface temperature reaches 200 plus 230 ℃.
In one or more embodiments of the present invention, the time for the epoxy powder fluidizing tank to contact the steel pipe is 1-2 weeks of rotation of the steel pipe in the epoxy powder tank; the contact time of the polyethylene adhesive powder vulcanization tank and the steel pipe is that the steel pipe rotates for 1-2 weeks in the epoxy powder tank; the contact time of the polyethylene special material powder fluidization groove and the steel pipe is 6-8 weeks after the steel pipe rotates in the polyethylene special material powder fluidization groove.
As shown in fig. 1, a three-station fluidized tank anticorrosive coating apparatus includes: the device comprises a fluidization groove I1, a fluidization groove II 2, a fluidization groove III 3 and a steel pipe transmission device 4; the steel pipe transmission device 4 consists of a support pipe bracket and a metal track 45, and the support pipe bracket is used for supporting the steel pipe 5; the pipe supporting bracket is arranged at one end of the metal track 45, and a fluidization groove I1, a fluidization groove II 2 and a fluidization groove III 3 are arranged on the metal track 45 and are opposite to one end of the pipe supporting bracket;
further, the fluidization groove I1, the fluidization groove II 2 and the fluidization groove III 3 are powder fluidization grooves; the fluidization tank I1 is an epoxy powder fluidization tank, the fluidization tank II 2 is a polyolefin adhesive powder fluidization tank, and the fluidization tank III 3 is a polyolefin special material powder fluidization tank.
As shown in fig. 3, the supporting tube bracket is of an upper-layer structure and a lower-layer structure, two limiting rollers 42 are arranged on the upper layer of the supporting tube bracket, and the steel tube 5 is placed between the two limiting rollers 42 on the upper layer of the supporting tube bracket;
further, the supporting pipe bracket can slide along the metal track 45, so that the steel pipe 5 is moved to the upper parts of the fluidization groove I1, the fluidization groove II 2 and the fluidization groove III 3;
an opening and closing motor 41 and a support rotating motor 43 are arranged on the upper layer of the support tube bracket, and the opening and closing motor 41 is used for controlling the distance between two limiting rollers 42 on the support tube bracket to support steel pipes with different diameters; the rotation of the steel pipe is controlled by the rotation of the bracket rotating motor 43; the lower layer of the support pipe bracket is provided with a steel pipe moving motor 44, and the steel pipe is controlled to move among the three fluidization grooves through the rotation of the steel pipe moving motor 44.
As shown in fig. 2, a fluidization plate 12 with micropores is arranged on a tank body 14 of the powder fluidization tank, the tank body 14 is connected with a fan 13, and the powder is suspended into a fluidized state by blowing air through the fluidization plate 12 with micropores by the fan 13;
the tank body 14 of the powder fluidization tank is arranged on a base 15, and four hydraulic lifting columns 11 are arranged on the base 15 of the powder fluidization tank; the hydraulic lifting column 11 drives the powder fluidization groove to move in the vertical direction, so that the powder in the powder fluidization groove is in contact with the steel pipe.
A steel pipe full-powder 3PE three-layer anticorrosive coating process is completed through the three-station fluidized tank anticorrosive coating equipment as shown in figure 4, and comprises the following steps: (1) preheating the surface-treated steel pipe by a heating furnace, wherein the temperature of the heating furnace is 280 ℃; (2) the steel pipe 5 is transmitted to a fluidization groove I1, namely above the epoxy powder fluidization groove, through a steel pipe transmission device 4, the surface temperature of the steel pipe reaches 210 ℃, the epoxy powder vulcanization groove is lifted to be in contact with the steel pipe, the steel pipe rotates for 1 week in the epoxy powder vulcanization groove, the fluidization groove is lowered, and an epoxy anticorrosive coating is formed after leveling; (3) then the steel pipe transmission device 4 moves the steel pipe 5 to the fluidization groove II 2, namely above the polyethylene adhesive fluidization groove, the polyethylene adhesive powder vulcanization groove is lifted to be in contact with the steel pipe, the steel pipe rotates for 1 week in the epoxy powder groove, the fluidization groove is lowered, and a polyethylene adhesive anticorrosive layer is formed after leveling; (4) and then the steel pipe transmission device 4 moves the steel pipe 5 to the fluidization groove III 3, namely above the special polyethylene material fluidization groove, the special polyethylene material powder vulcanization groove is lifted to be in contact with the steel pipe, the fluidization groove is lowered after the steel pipe rotates for 6 weeks in the epoxy powder groove, the steel pipe continues to rotate and level, and the full-powder 3PE three-layer anticorrosive plastic-coated steel pipe is obtained after leveling and cooling.
A steel pipe full-powder 3PP three-layer anticorrosive coating process is completed by the three-station fluidized tank anticorrosive coating equipment as shown in figure 4, and comprises the following steps: (1) preheating the surface-treated steel pipe by a heating furnace, wherein the temperature of the heating furnace is 300 ℃; (2) the steel pipe 5 is transmitted to a fluidization groove I1, namely above the epoxy powder fluidization groove, through a steel pipe transmission device 4, the surface temperature of the steel pipe reaches 230 ℃, the epoxy powder vulcanization groove is lifted to be in contact with the steel pipe, the steel pipe rotates for 1 week in the epoxy powder vulcanization groove, the fluidization groove is lowered, and an epoxy anticorrosive coating is formed after leveling; (3) then the steel pipe transmission device 4 moves the steel pipe 5 to the upper part of the polypropylene adhesive fluidization groove, the polypropylene adhesive powder vulcanization groove is lifted to be in contact with the steel pipe, the steel pipe rotates for 1 circle in the epoxy powder groove, the fluidization groove is lowered, and a polyethylene adhesive anticorrosive coating is formed after leveling; (4) and then the steel pipe transmission device 4 moves the steel pipe 5 to the position above the special polypropylene material fluidization groove, the special polypropylene material powder vulcanization groove is lifted to be in contact with the steel pipe, the steel pipe rotates in the epoxy powder groove for 8 weeks, the fluidization groove is lowered to enable the steel pipe to continue to rotate and level, and the full-powder 3PP three-layer anticorrosive plastic-coated steel pipe is obtained after leveling and cooling.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a three station fluidization groove anticorrosive application equipment which characterized in that includes: the device comprises a fluidization groove I, a fluidization groove II, a fluidization groove III and a steel pipe transmission device; the steel pipe transmission device consists of a support pipe bracket and a metal track, and the support pipe bracket is used for supporting a steel pipe; the fluidization groove I, the fluidization groove II and the fluidization groove III are sequentially arranged on the metal track.
2. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 1, wherein the supporting pipe bracket is arranged at one end of the metal track, and the metal track is provided with a fluidized tank I, a fluidized tank II and a fluidized tank III relative to one end of the supporting pipe bracket; further, the pipe supporting bracket can slide along the metal track, and the steel pipe is moved to the upper parts of the fluidization groove I, the fluidization groove II and the fluidization groove III.
3. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 1, wherein the support tube bracket is of an upper-layer structure and a lower-layer structure, two limiting rollers are arranged on the upper layer of the support tube bracket, and the steel pipe is placed between the two limiting rollers on the upper layer of the support tube bracket.
4. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 1, wherein an opening and closing motor and a support rotating motor are arranged on the upper layer of the support tube bracket, the opening and closing motor is used for controlling the distance between two limiting rollers on the support tube bracket to support steel pipes with different diameters, and the support rotating motor is used for controlling the rotation of the steel pipes; the lower layer of the pipe supporting bracket is provided with a steel pipe moving motor, and the steel pipe is controlled to move among the three fluidization grooves through the rotation of the steel pipe moving motor.
5. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 1, wherein the fluidized tank I, the fluidized tank II and the fluidized tank III are powder fluidized tanks;
furthermore, the fluidization tank I is an epoxy powder fluidization tank, the fluidization tank II is a polyolefin adhesive powder fluidization tank, and the fluidization tank III is a polyolefin special material powder fluidization tank.
6. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 1, wherein a fluidizing plate with micropores is arranged on a tank body of the powder fluidized tank, the tank body is connected with a fan, and the powder is suspended into a fluidized state by blowing air through the fluidizing plate with micropores by the fan.
7. The three-station fluidized tank anticorrosive coating equipment as claimed in claim 5, wherein the tank body of the powder fluidized tank is arranged on the base; furthermore, four hydraulic lifting columns are arranged on the base of the powder fluidization groove.
8. The three-layer anticorrosive coating process is characterized by being completed by the three-station fluidized tank anticorrosive coating equipment, and comprising the following steps of: heating the steel pipe subjected to surface treatment until the surface temperature reaches the expectation, transmitting the preheated steel pipe to the upper part of the epoxy powder fluidization groove through a steel pipe transmission device, lifting the epoxy powder fluidization groove to be in contact with the steel pipe, rotating the steel pipe, adhering epoxy powder on the surface by means of the heat of the steel pipe, reducing the fluidization groove to enable the steel pipe to continue to rotate and level, and forming an epoxy anticorrosive coating after leveling; and then the steel pipe passes through a polyolefin adhesive powder fluidization tank and a polyolefin special material powder fluidization tank to be sequentially coated with the polyolefin adhesive powder and the polyolefin special material powder, and the three-layer anticorrosive plastic-coated steel pipe is obtained after leveling and cooling.
9. The three-layer anticorrosive coating process according to claim 8, wherein the surface temperature of the steel pipe above the epoxy powder fluidizing tank is 200-230 ℃.
10. The three-layer anticorrosive coating process according to claim 8, wherein the contact time of the epoxy powder fluidized tank and the steel pipe is 1-2 weeks of rotation of the steel pipe in the epoxy powder tank; the contact time of the polyethylene adhesive powder vulcanization tank and the steel pipe is that the steel pipe rotates for 1-2 weeks in the epoxy powder tank; the contact time of the polyethylene special material powder fluidization groove and the steel pipe is 6-8 weeks after the steel pipe rotates in the polyethylene special material powder fluidization groove.
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| CN202111074294.9A CN113731763A (en) | 2021-09-14 | 2021-09-14 | Three-station fluidized tank anticorrosive coating equipment and coating process |
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| CN202111074294.9A CN113731763A (en) | 2021-09-14 | 2021-09-14 | Three-station fluidized tank anticorrosive coating equipment and coating process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843116A (en) * | 2021-10-14 | 2021-12-28 | 山东东宏管业股份有限公司 | Double-layer anticorrosion equipment and anticorrosion process for outer wall of steel pipe |
| CN114682465A (en) * | 2022-02-25 | 2022-07-01 | 山东东宏管业股份有限公司 | Anticorrosion method for three-layer polyethylene inside and outside epoxy resin inside bell and spigot steel pipe |
| CN114682466A (en) * | 2022-03-17 | 2022-07-01 | 山东东宏管业股份有限公司 | External anticorrosion technology and production line for epoxy external polyethylene anticorrosion steel pipe in socket joint |
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| CN209597500U (en) * | 2019-01-29 | 2019-11-08 | 天津市和圣丰保温防腐管有限公司 | A kind of anti-corrosive steel tube is interior to apply station mobile device |
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| CN208878988U (en) * | 2018-03-16 | 2019-05-21 | 无锡汉龙涂装设备有限公司 | A kind of heavy caliber plastic-coated steel fluidized bed coating process device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113843116A (en) * | 2021-10-14 | 2021-12-28 | 山东东宏管业股份有限公司 | Double-layer anticorrosion equipment and anticorrosion process for outer wall of steel pipe |
| CN113843116B (en) * | 2021-10-14 | 2023-10-03 | 山东东宏管业股份有限公司 | Double-layer corrosion prevention equipment and corrosion prevention process for outer wall of steel pipe |
| CN114682465A (en) * | 2022-02-25 | 2022-07-01 | 山东东宏管业股份有限公司 | Anticorrosion method for three-layer polyethylene inside and outside epoxy resin inside bell and spigot steel pipe |
| CN114682466A (en) * | 2022-03-17 | 2022-07-01 | 山东东宏管业股份有限公司 | External anticorrosion technology and production line for epoxy external polyethylene anticorrosion steel pipe in socket joint |
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