CN203711264U - Steel pipe protection layer coating production line for short-distance heating - Google Patents

Steel pipe protection layer coating production line for short-distance heating Download PDF

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Publication number
CN203711264U
CN203711264U CN201420084178.4U CN201420084178U CN203711264U CN 203711264 U CN203711264 U CN 203711264U CN 201420084178 U CN201420084178 U CN 201420084178U CN 203711264 U CN203711264 U CN 203711264U
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Prior art keywords
steel pipe
heating
short distance
paint line
production line
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CN201420084178.4U
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Inventor
吴欣航
徐旭锋
桑巍
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KEXIN CORROSION CONTROL ENGINEERING Co Ltd NINGBO
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KEXIN CORROSION CONTROL ENGINEERING Co Ltd NINGBO
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Abstract

The utility model relates to a steel pipe protection layer coating production line for short-distance heating, and aims at solving the problems of increase of space and cost, effect on the service life of a roller wheel and deformation of a steel pipe caused by an overlong heating route when the steel pipe is coated with an epoxy powder layer on the production line for heating by using heat conduction. The production line comprises a conveyer device, a dehumidifier, a shot blasting machine, a heating device, a spraying bin, an insulation device and a cooling device; the conveyer device is used for driving a steel pipe to advance in a spiral manner; the dehumidifier, the shot blasting machine, the heating device, the spraying bin, the insulation device and the cooling device are sequentially arranged along the conveying path; the heating device is used for heating a to-be-sprayed steel pipe; the heating device forms a tunnel shape, and comprises a heating coil through which the to-be-sprayed steel pipe passes; the heating coil is 400-700mm in width and connected with a middle-frequency power supply. The production line heats independently on the heat transfer mode, the heating route can be effectively shortened, and deformation of the steel pipe caused by a large transmission span is avoided when the floor cost is reduced and the service life of the roller wheel is ensured.

Description

A kind of steel pipe overcoat paint line of short distance heating
Technical field
The utility model relates to a kind of protective treatment production line of tube surfaces, particularly a kind of steel pipe overcoat paint line of short distance heating.
Background technology
At present, utilize large-scale automatic assembly line for steel pipe protective coating layer be the mode of production of generally taking in industry, in traditional production line, adopting heat exchange pattern is that steel pipe heating application is comparatively common.The patent No. be ZL's 200910100679.0 " large-scale steel pipe anticorrosive coat automatic coating process and production line thereof " recorded prior art, it is by the hot air in preheating drying room, make steel pipe be warming up to 50 ℃-70 ℃, to spray highly filled coating for it.If this production line is used to pipe coating FBE, the length of its preheating drying room must extend greatly, even reaches more than 20 meters, and guarantee steel pipe has enough heating strokes, to reach the spraying temperature of 190 ℃-210 ℃.Yet, so long preheating drying room is set, both increased space and cost, be difficult to again the life-span of the rubber rolling of assurance transmission steel pipe, also may cause occurring because of large span transmission the problem of pipe deformation.If the highly filled dope layer of production line application with heating application epoxy powder layer,, because follow-up solidified coating condition is different with equipment, is difficult to be competent at.
Utility model content
In order to solve the deficiencies in the prior art; the utility model provides a kind of steel pipe overcoat paint line of short distance heating; can the coating on steel pipe with the compatible different shape protective layer of short-range heating stroke, there is saving space, reduce costs, adapt to wide, the thermal efficiency is high, be difficult for making pipe deformation.
The steel pipe overcoat paint line of a kind of short distance heating that the utility model provides, comprise for driving the conveyer that on it, steel pipe spiral advances, along its transfer path, set gradually for removing the moisture-catcher of outer surface of steel tube moisture, for the shot-blasting machine eliminating rust, for the heater that steel pipe to be sprayed is heated up, for spraying the spraying storehouse of powder, attemperator and cooling device, described heater is tunnel-type, comprise the heater coil that steel pipe to be sprayed is therefrom passed, the width of described heater coil is 400mm-700mm and is connected with an intermediate frequency power supply.Adopt intermediate frequency coil eddy-current heating steel pipe, relatively with the conduction-type heating of hot blast, the heating of ultrared radiant type, have that melting efficiency is high, compact conformation, quick heating, homogeneous heating, working environment are superior, accuracy of temperature control advantages of higher, make the steel pipe short time of advancing can be warming up to preset temperature, thereby effectively shortened heating stroke, avoided the long technical problem of bringing apart from heating.When using this production line to spray liquid coating for steel pipe, described heater coil only need to be heated to steel pipe 50 ℃-60 ℃; When spraying FBE for steel pipe, described heater coil can make steel pipe be warmed up to rapidly 190 ℃-210 ℃, to realize the described short distance heating that takes into account different production lines.
As optimization technique means, between described spraying storehouse and attemperator, set up plastic extrusion apparatus, plastic extrusion apparatus comprises two extruders that overlap up and down, and one for extruding PE film, and another for extruding adhesive before extruding PE film.At this, plastic extrusion apparatus is set, can makes the disposable coated with multiple layer protective material of steel pipe of advancing, improve coating efficiency.
As optimization technique means, described cooling device is cooling boiled water room, is used to the steel pipe fast cooling that sprays 3 layers of PE coating or epoxy powder layer.
As optimization technique means, described attemperator has three groups of insulation coils, and these three groups insulation coils are set up in parallel, and shares intermediate frequency power supply with the heater coil in heater.In the situation that power allows, can further reduce the floor space of intermediate frequency power supply and the input of equipment cost are set respectively.
As optimization technique means, described conveyer comprises a plurality of steel pipe application delivery roll wheels of arranging along steel pipe transmission direction.Running roller can be made with elastomeric material, both can improve reliable transmission frictional force, also can prevent from when steel pipe from advancing misplacing.
As optimization technique means, described roller set is arranged on steel pipe and enters heater before and leave on attemperator path afterwards.Like this, running roller is positioned at outside heating and heat insulation work all the time, both can prevent from damaging running roller, can avoid again the overcoat just having sprayed by running roller, to be destroyed before solidifying and setting.
As optimization technique means, the running roller in described roller set has an inclination angle, is axially carried the angle between the axis direction that described inclination angle is running roller and steel pipe transmission direction when rotating for steel pipe.Can be by angle-adjusting mechanism or manually adjusts in angle of inclination.Adjust this angle and can change the pitch that steel pipe spiral is advanced, the angle of inclination of roller is larger, and pitch is larger, and the angle of inclination of roller is less, and pitch is less.
As optimization technique means, described moisture-catcher comprises that a width is the coil that dries of 400mm-700mm, and this coil that dries is connected with an intermediate frequency power supply separately.This moisture-catcher is for removing the moisture of steel tube surface, and its heating-up temperature is 60 ℃-80 ℃.Because this moisture-catcher is far away apart from heater and attemperator, therefore should not share intermediate frequency power supply.
As optimization technique means, described spraying storehouse one side is provided with a plurality of positions and the adjustable spray gun of angle, and spray gun is connected with an air screw compressor with a powder box respectively.
As optimization technique means, conveyer one side exporting at described cooling device arranges checkout gear, and this checkout gear is electric spark detector, for detection of the spraying leak source of steel pipe.
The steel pipe overcoat paint line of the short distance heating of the utility model protection, its feature that can be rapidly heated by medium-frequency heating coil realizes short distance heating steel pipe and takes into account liquid and the coating of powder coating, has the space of saving, reduces costs advantage.By set up plastic extrusion apparatus on original production line, spray 3 layers of PE coating.The coating layer of variform and the steel pipe of multiple protective layers all can be on same production line automatic coating, avoid the problem on deformation of large span transmission steel pipe, reduced the input of equipment and cost of floor space.In addition, take the method for Frequency Induction Heating can when improving heating efficiency, guarantee the stability of product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is overlooked state;
In figure: the 1st, conveyer, the 2nd, moisture-catcher, the 3rd, shot-blasting machine, the 4th, heater, the 5th, spraying storehouse, the 6th, attemperator, the 7th, cooling device, the 8th, checkout gear, the 9th, plastic extrusion apparatus, the 10th, intermediate frequency power supply, the 11st, spray gun, the 12nd, powder box, the 13rd, air screw compressor, the 14th, roller set, the 15th, steel pipe.
The specific embodiment
Below in conjunction with specification drawings and specific embodiments, substantive distinguishing features of the present utility model is further described.
As shown in the figure, the steel pipe overcoat paint line of this kind of short distance heating comprises: conveyer 1, the moisture-catcher 2 setting gradually along conveyer, shot-blasting machine 3, tunnel-type heater 4, spraying storehouse 5, plastic extrusion apparatus 9, attemperator 6, cooling device 7, checkout gear 8.Wherein moisture-catcher 2 and heater 4 have respectively a heater coil, the wide 400mm-700mm of heater coil.The heater coil of moisture-catcher 2 is connected with an intermediate frequency power supply 10; Attemperator 6 has three groups of insulation coils, these the three groups heater coils that are incubated in coil and heater 4, the intermediate frequency power supply 10 of a shared 1250KW.Wherein, cooling device 7 is cooling boiled water room.Device in this production line needn't be worked simultaneously, by opening and closing corresponding device to be suitable for the application of different conditions coating, make production line compatibility good, adapt to widely, the production line of many different structures needn't be set.In figure, conveyer 1 comprises a plurality of steel pipe application delivery roll wheels 14 of arranging along steel pipe transmission direction; Running roller is rubber wheel and has an angle of inclination, is axially carried the angle between the axis direction that this angle of inclination is running roller and steel pipe transmission direction when rotating for steel pipe.For avoiding running roller heat damage, the steel pipe overcoat after application being destroyed by running roller adhesion, and prevent that steel pipe 15 from falling down from roller set 14, roller set 14 be only arranged on steel pipe 15 enter heater 4 before and leave attemperator 6 after.
In figure, the mode of production of production line is:
(1) be the mode of steel pipe application quick-drying liquid epoxy coating: when the steel pipe 15 through drying and eliminating rust is transmitted device 1 and is delivered to heater 4, heater 4 is warming up to 50 ℃-60 ℃ by the steel pipe of normal temperature, steel pipe is admitted to spraying storehouse 5 after the short distance heat temperature raising of 400mm-700mm, in it spray gun 11 with quick-drying liquid epoxy powder box 12 be housed be connected with air screw compressor 13, under the effect of air screw compressor 13, spray gun 11 is pipe coating quick-drying liquid epoxy coating; When the steel pipe being sprayed enters attemperator 6, this attemperator 6 is incubated steel pipe at 50 ℃-60 ℃, the steel pipe heat preservation solidification that spiral is advanced 15 minutes; After curing of coatings, steel pipe enters cooling device, and cooling water is not opened, cooling through natural wind in the time of running roller transmission within it, then by checkout gear 8, detect spraying leak source, this checkout gear 8 is electric spark detector, and the product being up to the standards can put goods on the market.
(2) be the mode of 3 layers of PE coating of steel pipe application: between spraying storehouse 5 and attemperator 6, set up plastic extrusion apparatus 9, plastic extrusion apparatus 9 comprises two extruders that overlap up and down, one for extruding PE film, and another for extruding adhesive before extruding PE film.Different from spraying quick-drying liquid epoxy coating is, heater 4 needs short distance to be heated to 190 ℃-210 ℃, spray gun 11 is connected with air screw compressor 13 with the powder box 12 that epoxy powder is housed, spray gun sprays after epoxy powder, the steel pipe that plastic extrusion apparatus advances with respect to spiral, first to steel pipe, extrude adhesive, extrude again PE film, steel pipe is through the attemperator 6 that needn't heat, enter the cooling device 7 that sprays cooling water, cooling water can be lowered the temperature rapidly for being sprayed the steel pipe of 3 layers of PE coating.
(3) for the mode of steel pipe application individual layer epoxy powder bed: different from 3 layers of PE coating of application is, only plastic extrusion apparatus 9 need be closed, at spray gun, spray after epoxy powder, steel pipe is directly through the attemperator 6 of not heating, enter cooling device 7, carry out cold water cooling.
The utility model is not limited to the above-mentioned specific embodiment, and all variations that do not depart from this programme structure and effect are all in the utility model protection domain.As: in order to make the steel pipe of diameter within the scope of 273mm-3600mm all can complete application task on this streamline, the coil that dries in production line, heater coil and the spraying removable replacing in storehouse; By setting up side by side spraying storehouse or setting up baffler within it, can spray single or multiple lift FBE for steel pipe.

Claims (10)

1. the steel pipe overcoat paint line of short distance heating, comprise for driving the conveyer that on it, steel pipe spiral advances (1), along its transfer path, set gradually for removing the moisture-catcher (2) of outer surface of steel tube moisture, for the shot-blasting machine (3) eliminating rust, for the heater (4) that steel pipe to be sprayed is heated up, for spraying the spraying storehouse (5) of powder, attemperator (6) and cooling device (7), it is characterized in that: described heater (4) is tunnel-type, comprise the heater coil that steel pipe to be sprayed is therefrom passed, the width of described heater coil is 400mm-700mm, and be connected with an intermediate frequency power supply (10).
2. the steel pipe overcoat paint line that a kind of short distance as claimed in claim 1 heats, it is characterized in that: between described spraying storehouse (5) and attemperator (6), set up plastic extrusion apparatus (9), plastic extrusion apparatus (9) comprises two extruders that overlap up and down, one for extruding PE film, and another for extruding adhesive before extruding PE film.
3. the steel pipe overcoat paint line of a kind of short distance heating as claimed in claim 2, is characterized in that: described cooling device (7) is cooling boiled water room, is used to the steel pipe fast cooling that sprays 3 layers of PE coating or epoxy powder layer.
4. the steel pipe overcoat paint line that a kind of short distance as claimed in claim 1 heats, it is characterized in that: described attemperator (6) has three groups of insulation coils, these three groups insulation coils are set up in parallel, and share intermediate frequency power supply (10) with the heater coil in heater (4).
5. the steel pipe overcoat paint line of a kind of short distance heating as claimed in claim 1, is characterized in that: described conveyer (1) comprises a plurality of steel pipe application delivery roll wheels (14) of arranging along steel pipe (15) transmission direction.
6. the steel pipe overcoat paint line of a kind of short distance heating as claimed in claim 5, is characterized in that: described roller set (14) is arranged on steel pipe (15) and enters heater (4) before and leave on attemperator (6) path afterwards.
7. the steel pipe overcoat paint line that a kind of short distance as claimed in claim 6 heats, it is characterized in that: the running roller in described roller set (14) has an inclination angle, when rotating for steel pipe, axially carried the angle between the axis direction that described inclination angle is running roller and steel pipe transmission direction.
8. the steel pipe overcoat paint line of a kind of short distance heating as claimed in claim 1, is characterized in that: described moisture-catcher (2) comprises that a width is the coil that dries of 400mm-700mm, and this coil that dries is connected with an intermediate frequency power supply (10) separately.
9. the steel pipe overcoat paint line that a kind of short distance as claimed in claim 1 heats, it is characterized in that: described spraying storehouse (5) one sides are provided with a plurality of positions and the adjustable spray gun of angle (11), spray gun (11) is connected with an air screw compressor (13) with a powder box (12) respectively.
10. the steel pipe overcoat paint line that a kind of short distance as claimed in claim 1 heats, it is characterized in that: conveyer (1) one side in described cooling device (7) outlet arranges checkout gear (8), this checkout gear (8) is electric spark detector, for detection of the spraying leak source of steel pipe.
CN201420084178.4U 2014-02-27 2014-02-27 Steel pipe protection layer coating production line for short-distance heating Active CN203711264U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420084178.4U CN203711264U (en) 2014-02-27 2014-02-27 Steel pipe protection layer coating production line for short-distance heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420084178.4U CN203711264U (en) 2014-02-27 2014-02-27 Steel pipe protection layer coating production line for short-distance heating

Publications (1)

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CN203711264U true CN203711264U (en) 2014-07-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105880083A (en) * 2014-12-12 2016-08-24 蚌埠市志诚涂装设备科技有限公司 Spraying production line for small-caliber steel tubes
CN112871593A (en) * 2020-12-31 2021-06-01 柳州桂桥缆索有限公司 Spraying production method of polyurea coating inhaul cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105880083A (en) * 2014-12-12 2016-08-24 蚌埠市志诚涂装设备科技有限公司 Spraying production line for small-caliber steel tubes
CN112871593A (en) * 2020-12-31 2021-06-01 柳州桂桥缆索有限公司 Spraying production method of polyurea coating inhaul cable

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