CN105396769B - A kind of manufacture method of epoxy resin pipeline - Google Patents

A kind of manufacture method of epoxy resin pipeline Download PDF

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Publication number
CN105396769B
CN105396769B CN201510694404.XA CN201510694404A CN105396769B CN 105396769 B CN105396769 B CN 105396769B CN 201510694404 A CN201510694404 A CN 201510694404A CN 105396769 B CN105396769 B CN 105396769B
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China
Prior art keywords
steel pipe
powder
spray gun
box
interior
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CN201510694404.XA
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CN105396769A (en
Inventor
付希波
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QINGDAO HONEST PARTNER INDUSTRIAL Co Ltd
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QINGDAO HONEST PARTNER INDUSTRIAL Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment 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
    • B05D3/10Pretreatment 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 other chemical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/02Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06Applying particulate materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment 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
    • B05D3/02Pretreatment 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00Metallic substrate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2254/00Tubes
    • B05D2254/04Applying the material on the interior of the tube
    • B05D2254/06Applying the material on the interior and exterior of the tube

Abstract

The invention discloses a kind of manufacture method of epoxy resin pipeline, wherein, comprise the following steps:A. steel pipe is put into pickling tube, carries out acid pickling and rust removing operation, and the steel pipe after B. pickling is rinsed well and dried with clear water, standby, C. is to the steel pipe heating in medium frequency obtained by step B, inside and outside synchronous spray epoxy powder of the D. electrostatic sprays to steel pipe, E. it is heating and curing, F. Temperature falls;Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe conveyer, outer spray coating device, inner spray coating device and powder recovering device, and the extension tube for being used to connect interior spray gun on inner spray coating device is the stretching structure of hydraulic-driven.The inventive method is simple, easy to use, can reduce production line floor space, improves production efficiency, avoids spray gun from trembleing, and dusts uniformly and powder using efficiency is high.

Description

A kind of manufacture method of epoxy resin pipeline
Technical field:
The present invention relates to pipe technology field, is specifically related to a kind of manufacture method of epoxy resin pipeline.
Background technology:
The coating pipe of steel pipe has the steel pipe of galvanized pipe, plating aluminum pipe, chromium-plated tube, aluminizing pipe and other alloy-layers.Coated pipe There are external coating pipe, undercoating pipe, inside and outside coating pipe.The coating of generally use have plastics, epoxy resin, coal tar epoxy with And the corrosion-inhibiting coating material of various glass moulds.Coating steel pipes are through powder melts spraying technology in inwall(Outer wall also may be used when needing)Coating Plastics form, its excellent performance.Compared with galvanized pipe, have anticorrosive, non-corrosive, incrustation, it is smooth it is smooth, cleaning is not nontoxic, The advantages that service life is long.According to test, the service life of steel-plastics composite pipe is more than the three times of galvanized pipe.Compared with plastic tube, With high mechanical strength, it is pressure-resistant, heat-resist the advantages that.Because matrix is steel pipe, so in the absence of brittle, problem of aging.Can It is widely used in the conveying of the fluids such as running water, coal gas, chemical products and heating engineering.
Plastic-coated steel is to apply plastics on the basis of large-caliber spiral welded tube and ratio-frequency welded tube to form, can be according to different need Want application of polyvinyl(PVC), polyethylene(PE), epoxy resin(EPOZY)Etc. the plastic coating of various different performances, adhesive force Good, corrosion resistance is strong, is resistant to strong acid, highly basic and other chemical attacks, and nontoxic, not corrosion, wear-resisting, impact resistance, osmotic-pressure-tolerant are strong, Pipe surface is smooth, does not adhere to any material, can reduce resistance during conveying, improves flow and transfer efficiency, reduces delivery pressure Power is lost, and by updating the Recipe of powdery paints, makes the respective coatings performance to be formed is more prominent to have become certainty. It is solvent-free in coating, material can not be oozed out, thus conveyed medium will not be polluted, so as to ensure the clarity of fluid and health Property, -40 DEG C to+80 DEG C scopes can cold cycling be used alternatingly, not aging, be not cracked, thus can be severe in cold zone etc. Used in the environment of quarter.
Existing technique, as Chinese patent application CN101823044A discloses a kind of steel pipe inside and outside wall powder spraying, curing The method of film forming integration, using movable type spraying and heating apparatus, make powder spray and heating cure while carry out, using leading Leading-in device, the heating and spraying for making steel pipe are at the uniform velocity advanced, and steel pipe sets up in orbit along orbital direction, and railcar is across steel pipe On, interior spray gun is erected on travel(l)ing rest and is placed in steel pipe, and railcar and travel(l)ing rest are connected to draw-gear by steel wire rope On, Motionless electromagnetic cartridge heater and outer spray gun, air pump are connected on electrostatic spraying apparatus by ventilation duct in railcar, electrostatic spraying Device is connected in railcar and interior spray gun by powder delivery hose.Synchronously spraying, Synchronous Heating are solid for this mode inside and outside wall Change, simplify processing procedure.Moreover, this mode synchronously sprayed has become the main flow in market.But defect is as follows: 1st, steel pipe is fixed, cause it is outer spray it is uneven, i.e. bottommost sprayed coating is thin, 2, inside and outside spray gun move to opposite side from side, Reset again;Then the spraying of next steel pipe could be carried out, it is inefficient, and also Powder Recovery is under-utilized, plastic-coated powder wave Take serious.3rd, travel(l)ing rest is by steel wire traction, and existing defects are as follows, and support is located in pipeline, easily produces spraying position Cut, 4, rope traction makes travel(l)ing rest when pipe end takes out, or be placed into not easy to operate during other end original position. There are problems in the 5th, Synchronous Heating solidification, because electromagnetic heating device can not cover pipeline entirety, and electromagnetic heating device is constantly transported It is dynamic, cause heating uneven, solidification effect is bad.So having abandoned the mode of Synchronous Heating solidification substantially at present, and use system One case that is heating and curing, whole steel pipe can be accommodated and carry out overall heating.
To solve upper part technical problem, occurring some rigid spray guns on the market, i.e. steel tube end part sets up spray gun, Promote spray gun to advance by moving cart, moving cart bottom laying track, still, the other end is moved to from pipeline one end, sprayed Rifle length is long to cause end to be trembleed, inequality of dusting, moreover, long pipeline necessarily supports the track of the moving cart of spray gun Distance increase, adds floor space, greatly reduces plant area's utilization rate.But reduce the length of rigid lance but can not solve Certainly longer pipeline(Such as more than 8 meters)Spraying.In view of this technical problem is, it is necessary to simple, the user that a kind of method occurs Just, production line floor space can be reduced, production efficiency is improved, avoids spray gun from trembleing, dusts uniformly and powder using efficiency is high A kind of manufacture method of epoxy resin pipeline.
The content of the invention:
It is an object of the invention to overcome shortcoming present in prior art, there is provided a kind of method is simple, easy to use, energy Production line floor space is enough reduced, production efficiency is improved, avoids spray gun from trembleing, dust a kind of uniform and high powder using efficiency ring The manufacture method of oxygen tree fat pipeline.
To achieve these goals, the invention provides a kind of manufacture method of epoxy resin pipeline, wherein, including it is as follows Step:
A. steel pipe is put into pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe after pickling is rinsed well and dried with clear water, standby,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous spray epoxy powder of steel pipe,
E. it is heating and curing,
F. Temperature fall;
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe conveyer, trypsin method dress Put, inner spray coating device and powder recovering device, the extension tube for being used to connect interior spray gun on inner spray coating device is hydraulic-driven Stretching structure.
Steel pipe conveyer includes process track, and two moving carts, the bottom of moving cart are provided with process track Road wheel is provided with, road wheel matches with process track, and the top of each moving cart is integrally formed to be provided with slide rail, often Two motor cabinets are slidably connected on slide rail in individual moving cart, the side of motor cabinet is provided with frame plate, and frame plate and movement are small It is fixedly connected between car, steel pipe rotary electric machine and shaft coupling, the output shaft and shaft coupling of steel pipe rotary electric machine is fixed with motor cabinet One end of device is fixedly connected, and the other end of shaft coupling is provided with power transmission shaft, axis connection between power transmission shaft and frame plate, in power transmission shaft Portion is fixed with rotating wheel, the integrally formed groove for being provided with L shapes in the edge of rotating wheel, and steel pipe rotary electric machine passes through shaft coupling band Turn wheel rotation, setting up at the groove on rotating wheel in two moving carts has steel pipe, and rotating wheel rotates in place steel pipe, Two moving carts, to adapt to the steel pipe of different length, are fixed motor cabinet by bolt in the upper distance change of process track On to slide rail and then the distance of two motor cabinets is adjusted, that is, have adjusted the spacing of two rotating wheels to adapt to the steel of different tube diameters Pipe.
Outer spray coating device includes two work boxs and two groups of work box tracks, and work box track is located at the two of process track Side, the side of each work box are provided with the outer powder case of spray, and opposite side is provided with collection box, and work box is in n shape, and the one of work box Side wall is fixed with how exclusive spray gun, and adjacent two exclusive spray gun is intersected with each other, and intersecting angle is 30-60 degree, the opposite side of work box Axis connection has brush axle, is provided with brush spindle motor above brush axle, brush spindle motor is located in work box, the output shaft and brush of brush spindle motor Axle is fixedly connected, and suction plastering roller is socketed with brush axle, and suction plastering roller is superfine fibre textile, be provided with collection box blower fan and Powder falling storehouse, integrally formed be provided with of the side wall of collection box inhale powder mouth, inhale plastering roller positioned at the side for inhaling powder mouth, spray in outer powder case Pump box is provided with, pump box drives powder, and the bottom of work box is hooked with backplate backplates in outer lance ejection to outer wall of steel pipe Bottom it is integrally formed be provided with half slot, half slot is the top with steel pipe, sprays outer powder case, the bottom of collection box is provided with Road wheel and road wheel matches with work box track.
Inner spray coating device includes two interior spray gun traveling boxes, discharge tube, interior spray gun and spray inner powder case, interior spray gun traveling box position In the outside of corresponding moving cart, the bottom of interior spray gun traveling box is provided with road wheel and road wheel matches with process track, Fixing pipe is provided with the middle part of interior spray gun traveling box, fixing pipe is fixedly arranged at the front end with extension tube, and extension tube is stretched for hydraulic-driven Shrinking structure, extension tube are more piece, and the bottom of interior spray gun traveling box is fixed with bottom plate, are fixed with hydraulic pump on bottom plate, hydraulic pump with Connected between extension tube by hydraulic oil pipe, the end for often saving extension tube is fixed with suspender, and the top of suspender is integrally formed to be set The fixing groove of arcuation is equipped with, some balls are embedded with the inwall of suspender, the end of a section extension tube of front end is fixed with fixation Bar, four walls of fix bar are embedded with the wide bar magnets of 2-5cm, and the end of fix bar is fixed with interior spray gun, and interior spray gun is with dusting Pipe plugs together connection, and the bottom of a section extension tube of least significant end is fixedly connected with coil pipe case, and the side wall of coil pipe case is walked with interior spray gun Be fixedly connected between case, be provided with spool in the middle part of coil pipe case, the external stability of coil pipe case has a coil motor, coil motor it is defeated Shaft is fixedly connected with spool, and coil motor driving spool rotates and then realizes the folding and unfolding of discharge tube, and discharge tube prolongs through often section Suspender on long tube is simultaneously connected after reel wound with being plugged together in the middle part of fixing pipe, and spray inner powder case plugs together connection by connecting tube To fixing pipe;Both sides are fixed with two groups of regulating bolts up and down for the tube wall of fixing pipe, regulating bolt and bottom plate, interior spray gun traveling box Top is threadedly coupled, and the precession or back-out of regulating bolt and then adjusts fixing pipe apart from the height of bottom plate, that is, have adjusted interior spray gun Height apart from ground is so that interior spray gun adapts to the steel pipe of different tube diameters and ensures that interior spray gun is suspended from the circle centre position of this steel pipe, in spray Pump box is provided with powder case, pump box drives powder to be sprayed along fixing pipe, interior spray gun.
Powder recovering device include connect powder tank, connect powder tank and be fixed between process track, connect powder tank be located at steel pipe just under Side, across the top for connecing powder tank, the powder part that outer spray gun sprays is fallen within to be connect in powder tank work box, connects middle part, the both ends of powder tank It is integrally formed respectively and is provided with Ji Fenkou, the section for connecing powder tank is semicircle shape, and the bottom for connecing powder tank is plugged and connected with mozzle, more Individual mozzle is connected by recovery tube, and recovery tube is connected with collection box, the integrally formed setting in both sides of the half slot of backplate There is link, rubber flap is hooked with link, rubber flap is in semicircle shape, and rubber flap is as two work boxs move and then will The powder connect in powder tank is pushed near Ji Fenkou, and the suction of the blower fan in collection box will inhale plastering roller, connect powder in powder tank Suction collection box is simultaneously dropped into powder falling storehouse.
Step D job step is:
First, the spacing of two moving carts is adjusted according to length of steel pipe, and moving cart is fixed to work by fixture block On sequence track;The distance between motor cabinet of each moving cart is adjusted according to the thickness of steel pipe caliber, spray gun is walked in regulation Regulating bolt on case, interior spray gun is set to be located at the circle centre position of such a steel pipe, the steel pipe after heating in medium frequency hangs in shifting by overhead traveling crane At the groove of the rotating wheel of dynamic dolly, steel pipe rotary electric machine is synchronous, motion in the same direction, and steel pipe revolves with the rotation original place of rotating wheel Turn;
Secondly, two work boxs are made to be located at the both ends of steel pipe, interior spray gun is located at the both ends of steel pipe, two interior spray gun traveling boxes To entering and the time difference to entering is 5-10s, two work boxs are to entering and the time difference to entering is 5-10s, two interior spray guns walkings Case, the travel distance of work box are set as the 1/2+15cm of length of steel pipe, in extension tube traveling process, gradually spread out more piece, End bar magnet attracts each other with steel pipe inner wall, lowers the vibration of fix bar, the stabilization of spray gun in guarantee;I.e., interior spray gun row Walk case, work box moves to+15cm places in the middle part of steel pipe, then return;Because traveling existence time is poor, one of them interior spray gun walking After case, work box return, another interior spray gun traveling box, work box have been advanced to close at the 1/2 of length of steel pipe, by seam Place repeats to spray.
On work box, stepper motor (i.e. movable motor) is provided with interior spray gun traveling box, for drive its move or Retreat.
The present invention carries out powder spray using electrostatic hot spray process, and powder uses epoxy powder, i.e., quiet using high pressure Electric corona field principle, coated steel pipe is grounded as positive pole, inside and outside spray gun spray nozzle and connects high pressure negative electrode, makes spray gun and steel A powerful electric field is formed between pipe, steel pipe is after Medium frequency induction coil heats, and pump box generation compressed air is by powder out of spray Powder case, the outer powder case of spray are sent to spray gun ejection, and the aciculiform electroplax on shower nozzle produces corona discharge, and the powder flowed through carries negative electricity Lotus, under the double action of electrostatic field and delivery gas, orientation flies to steel pipe internal-surface, with becoming molten condition;Again will pipe Baking-curing in curing oven is sent into road, and temperature control is at 225-260 DEG C;Temperature fall, strengthen the adhesive force of powder.Become Epoxy resin pipe.
During spraying, there is the inclination angle of 15-45 degree with tube wall in spray gun.
Advantages of the present invention is:Method is simple, easy to use, can reduce production line floor space, improves production efficiency, Avoid spray gun from trembleing, dust uniformly and powder using efficiency is high.Specially:
1st, it is of the invention by the way of to entering and poor to entering existence time, spray gun in every group, object for appreciation spray gun is reached steel pipe At 1/2+15cm distances, that is, exist at 15cm repetition spraying, both saved in general spray time, improved operating efficiency And can enough makes the perfect docking of seam crossing simultaneously.
2nd, the present invention is by the way of to entering, i.e., rigid interior spray gun can be the half length of conventional lance, with 12 meters Exemplified by steel tube inner spray applies, if spray gun in 12 meters of extension tube fixation, with motion, extend tube end vibration seriously, largely effect on Coating quality in pipe.And use to entering mode, reduce the distance of extension tube half, i.e. 6 meters of extension tube can be achieved, vibration Significantly reduce, coating quality is good in pipe(Current interior spray gun is serious more than 6m vibrations, spraying operation effect in the pipe after 6-7m Difference).
Meanwhile in extension tube traveling process, more piece is gradually spread out, end bar magnet attracts each other with steel pipe inner wall, subtracted The vibration of low fix bar, the stabilization of spray gun in guarantee.Therefore extension tube overall length can be increased to 9-10m, i.e., spray gun in two groups , can be with disposable spray finishing extreme length 20m steel pipe if entering, and ensure the quality of interior spraying.
3rd, reclaimed while the present invention is sprayed outside by inhaling plastering roller, being returned by Ji Fenkou in powder tank is connect for dropping into Receive, greatly reduce the waste situation of powder.(Excessive powder in pipe is collected well, only blows to opposite side with from side, and And be not in the situation of pollution in pipe, and the powder outside pipe becomes easily infected by dust, iron filings etc., so focusing on pipe The recycling of outer powder.)
4th, because extension rod employs stretching structure, though i.e. process track is significantly short, reduces the length of process track, subtract Floor space is lacked, has made factory building utilization rate high, when especially site operation sets up production line, construction cost reduces 12-15%.
Brief description of the drawings:
Fig. 1 is the structural representation of the electrostatic spraying line of the present invention.
Fig. 2 is the structural representation of the steel pipe conveyer of the present invention.
Fig. 3 is Fig. 2 side view.
Structural representation when Fig. 4 is outer spray coating device operation of the present invention.
Fig. 5 is the structural representation of spray gun traveling box in the present invention.
Fig. 6 is the structural representation of suspender of the present invention.
Fig. 7 is the schematic cross-sectional view at fix bar of the present invention.
Fig. 8 is the schematic top plan view for connecing powder tank of the present invention.
Fig. 9 is the view of the recovery powder for connecing powder tank of the present invention.
Embodiment:
Below in conjunction with the accompanying drawings, the present invention will be described.As shown in Fig. 1-Fig. 9, Fig. 1 is the electrostatic spraying line of the present invention Structural representation.Fig. 2 is the structural representation of the steel pipe conveyer of the present invention.Fig. 3 is Fig. 2 side view.Fig. 4 is the present invention Structural representation during outer spray coating device operation.Fig. 5 is the structural representation of spray gun traveling box in the present invention.Fig. 6 is the present invention The structural representation of suspender.Fig. 7 is the schematic cross-sectional view at fix bar of the present invention.The vertical view for connecing powder tank that Fig. 8 is the present invention is shown It is intended to.Fig. 9 is the view of the recovery powder for connecing powder tank of the present invention.
A kind of manufacture method of epoxy resin pipeline of the present invention, wherein, comprise the following steps:
A. steel pipe is put into pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe after pickling is rinsed well and dried with clear water, standby,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous spray epoxy powder of steel pipe,
E. it is heating and curing,
F. Temperature fall;
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe conveyer, trypsin method dress Put, inner spray coating device and powder recovering device, the extension tube 25 for being used to connect interior spray gun 26 on inner spray coating device is driven for hydraulic pressure Dynamic stretching structure.
Steel pipe conveyer includes process track 11, and two moving carts 9, moving cart 9 are provided with process track 11 Bottom be provided with road wheel 10, road wheel 10 matches with process track 11, and the top of each moving cart 9 is integrally formed It is provided with slide rail, slidably connects two motor cabinets 8 on the slide rail in each moving cart 9, the side of motor cabinet 8 is provided with frame Plate 2, it is fixedly connected between frame plate 2 and moving cart 9, steel pipe rotary electric machine 7 and shaft coupling 1 is fixed with motor cabinet 8, steel pipe turns The output shaft of dynamic motor 7 is fixedly connected with one end of shaft coupling 1, and the other end of shaft coupling 1 is provided with power transmission shaft, power transmission shaft and frame Axis connection between plate 2, power transmission shaft are fixedly arranged in the middle of rotating wheel 2, the integrally formed slope for being provided with L shapes in the edge of rotating wheel Mouthful, steel pipe rotary electric machine 7 drives rotating wheel 6 to rotate by shaft coupling 1, the groove 3 on rotating wheel 6 in two moving carts 9 Place's erection has steel pipe 4, and rotating wheel 6 rotates in place steel pipe 4, upper distance change of two moving carts 9 in process track 11 To adapt to the steel pipe 4 of different length, motor cabinet 8 is fixed on slide rail to adjust the distance of two motor cabinets 8 by bolt, The spacing of two rotating wheels 6 be have adjusted to adapt to the steel pipe 4 of different tube diameters.
Outer spray coating device includes two work boxs 13 and two groups of work box tracks 19, and work box track 19 is located at process track 11 both sides, the side of each work box 13 are provided with the outer powder case 12 of spray, and opposite side is provided with collection box 18, and work box 13 is in n Shape, a side wall of work box 13 are fixed with how exclusive spray gun 14, and adjacent two exclusive spray gun 14 is intersected with each other, and intersecting angle is 30-60 degree, the opposite side axis connection of work box 13 have brush axle 16, and the top of brush axle 16 is provided with brush spindle motor, and brush spindle motor is located at In work box 13, the output shaft of brush spindle motor is fixedly connected with brush axle 16, is socketed with brush axle 16 and is inhaled plastering roller 17, inhales plastering roller 17 be superfine fibre textile, and blower fan and powder falling storehouse, the integrally formed setting of side wall of collection box 18 are provided with collection box 18 Have and inhale powder mouth, inhale plastering roller 17 positioned at the side for inhaling powder mouth, spray and pump box is provided with outer powder case 13, pump box drives powder along outer Spray gun 14 is ejected on the outer wall of steel pipe 4, and the bottom of work box 13 is hooked with the integrally formed setting in bottom of the backplate 15 of backplate 15. There is half slot, half slot is the top with steel pipe 4, sprays outer powder case 12, the bottom of collection box 18 is provided with road wheel and road wheel Match with work box track 19.
Inner spray coating device includes two interior spray gun traveling boxes 22, discharge tube 34, interior spray gun 26 and spray inner powder case 20, interior spray gun Traveling box 22 is located at the outside of corresponding moving cart 9, and the bottom of interior spray gun traveling box 22 is provided with road wheel and road wheel and work Sequence track 11 matches, and the middle part of interior spray gun traveling box 22 is provided with fixing pipe 23,
Fixing pipe 23 is fixedly arranged at the front end with extension tube 25, and extension tube 25 is the stretching structure of hydraulic-driven, and extension tube 25 is More piece, the bottom of interior spray gun traveling box 22 are fixed with bottom plate 24, are fixed with hydraulic pump on bottom plate 24, hydraulic pump and extension tube 25 it Between connected by hydraulic oil pipe, often save extension tube 25 end be fixed with suspender 35, the integrally formed setting in top of suspender 35 There is the fixing groove 39 of arcuation, some balls 38 are embedded with the inwall of suspender 35, the end of a section extension tube 25 of front end is fixed There is fix bar 36, four walls of fix bar 36 are embedded with the wide bar magnets 37 of 2-5cm, and the end of fix bar 36 is fixed with interior spray gun 26, interior spray gun 26 plugs together with discharge tube 34 to be connected, and the bottom of a section extension tube 25 of least significant end is fixedly connected with coil pipe case 32, disk It is fixedly connected between the side wall of bobbin carriage 32 and interior spray gun traveling box 22, the middle part of coil pipe case 32 is provided with spool 33, coil pipe case 32 External stability have coil motor, the output shaft of coil motor is fixedly connected with spool 33, coil motor driving spool rotate into And the folding and unfolding of discharge tube 34 is realized, discharge tube 34 is through the suspender 35 often saved in extension tube 25 and after the winding of spool 33 and admittedly The middle part of fixed tube 23 plugs together connection, and spray inner powder case 20 is plugged together by connecting tube is connected to fixing pipe 23;On the tube wall of fixing pipe 23 Lower both sides are fixed with two groups of regulating bolts 21, and regulating bolt 21 is threadedly coupled with the top of bottom plate, interior spray gun traveling box 22, regulation The precession or back-out of bolt 21 and then fixing pipe 23 is adjusted apart from the height of bottom plate 24, that is, have adjusted height of the interior spray gun apart from ground Degree is so that interior spray gun 2)Adapt to the steel pipe of different tube diameters and ensure that interior spray gun 26 is suspended from the circle centre position of this steel pipe, spray in inner powder case 20 Pump box is provided with, pump box driving powder sprays along fixing pipe 23, interior spray gun 26.
Powder recovering device includes connecing powder tank 5, connects powder tank 5 and is fixed between process track 11, connects powder tank 5 and be located at steel pipe Underface, across the top for connecing powder tank 5, the powder part that outer spray gun 14 sprays is fallen within to be connect in powder tank 5 work box 13, connects powder tank 5 Middle part, both ends be integrally formed be provided with collection powder mouth 29 respectively, the section for connecing powder tank 5 is semicircle shape, and the bottom for connecing powder tank 5 plugs together Mozzle 30 is connected with, multiple mozzles 30 are connected by recovery tube 31, and recovery tube 31 is connected with collection box 18, backplate 15 The both sides of half slot are integrally formed to be provided with link 28, is hooked with rubber flap on link 28, and rubber flap is in semicircle shape, rubber Glue scraper plate is moved with two work boxs and then the powder connect in powder tank is pushed near collection powder mouth 29, the wind in collection box 18 The powder inhaled plastering roller 17, connect in powder tank 5 is sucked collection box 18 and dropped into powder falling storehouse by the suction of machine.
On work box, stepper motor (i.e. movable motor 27) is provided with interior spray gun traveling box, for driving its motion Or retreat.
Step D job step is:
First, the spacing of two moving carts is adjusted according to length of steel pipe, and moving cart is fixed to work by fixture block On sequence track;The distance between motor cabinet of each moving cart is adjusted according to the thickness of steel pipe caliber, spray gun is walked in regulation Regulating bolt on case, interior spray gun is set to be located at the circle centre position of such a steel pipe, the steel pipe after heating in medium frequency hangs in shifting by overhead traveling crane At the groove of the rotating wheel of dynamic dolly, steel pipe rotary electric machine is synchronous, motion in the same direction, and steel pipe revolves with the rotation original place of rotating wheel Turn;
Secondly, two work boxs are made to be located at the both ends of steel pipe, interior spray gun is located at the both ends of steel pipe, two interior spray gun traveling boxes To entering and the time difference to entering is 5-10s, two work boxs are to entering and the time difference to entering is 5-10s, two interior spray guns walkings Case, the travel distance of work box are set as the 1/2+15cm of length of steel pipe,
In extension tube traveling process, more piece is gradually spread out, end bar magnet attracts each other with steel pipe inner wall, lowers and fixes The vibration of bar, the stabilization of spray gun in guarantee;I.e., interior spray gun traveling box, work box move to+15cm places in the middle part of steel pipe, then return Position;Because traveling existence time is poor, after one of them interior spray gun traveling box, work box return, another interior spray gun traveling box, work Case has been advanced to close at the 1/2 of length of steel pipe, and seam crossing is repeated to spray.
The present invention carries out powder spray using electrostatic hot spray process, and powder uses epoxy powder, i.e., quiet using high pressure Electric corona field principle, coated steel pipe is grounded as positive pole, inside and outside spray gun spray nozzle and connects high pressure negative electrode, makes spray gun and steel A powerful electric field is formed between pipe, steel pipe is after Medium frequency induction coil heats, and pump box generation compressed air is by powder out of spray Powder case, the outer powder case of spray are sent to spray gun ejection, and the aciculiform electroplax on shower nozzle produces corona discharge, and the powder flowed through carries negative electricity Lotus, under the double action of electrostatic field and delivery gas, orientation flies to steel pipe internal-surface, with becoming molten condition;Again will pipe Baking-curing in curing oven is sent into road, and temperature control is at 225-260 DEG C;Temperature fall, strengthen the adhesive force of powder.Become Epoxy resin pipe.
Comparative experiments:
By taking the polyvinyl chloride spraying pipeline for producing 12m as an example, first group is used as using background technology CN101823044A.This Invention is used as second group.Using an interior spray gun, one group of outer spray coating device advances to the operating type of the other end as the from one end Three groups.Every group of processing ten, compares and is listed as follows:
To sum up, advantages of the present invention is:Method is simple, easy to use, can reduce production line floor space, improves production Efficiency, avoid spray gun from trembleing, dust uniformly and powder using efficiency is high.Specially:
1st, it is of the invention by the way of to entering and poor to entering existence time, spray gun in every group, object for appreciation spray gun is reached steel pipe At 1/2+15cm distances, that is, exist at 15cm repetition spraying, both saved in general spray time, improved operating efficiency And can enough makes the perfect docking of seam crossing simultaneously.
2nd, the present invention is by the way of to entering, i.e., rigid interior spray gun can be the half length of conventional lance, with 12 meters Exemplified by steel tube inner spray applies, if spray gun in 12 meters of extension tube fixation, with motion, extend tube end vibration seriously, largely effect on Coating quality in pipe.And use to entering mode, reduce the distance of extension tube half, i.e. 6 meters of extension tube can be achieved, vibration Significantly reduce, coating quality is good in pipe(Current interior spray gun is serious more than 6m vibrations, spraying operation effect in the pipe after 6-7m Difference).
Meanwhile in extension tube traveling process, more piece is gradually spread out, end bar magnet attracts each other with steel pipe inner wall, subtracted The vibration of low fix bar, the stabilization of spray gun in guarantee.Therefore extension tube overall length can be increased to 9-10m, i.e., spray gun in two groups , can be with disposable spray finishing extreme length 20m steel pipe if entering, and ensure the quality of interior spraying.
3rd, reclaimed while the present invention is sprayed outside by inhaling plastering roller, being returned by Ji Fenkou in powder tank is connect for dropping into Receive, greatly reduce the waste situation of powder.(Excessive powder in pipe is collected well, only blows to opposite side with from side, and And be not in the situation of pollution in pipe, and the powder outside pipe becomes easily infected by dust, iron filings etc., so focusing on pipe The recycling of outer powder.)
4th, because extension rod employs stretching structure, though i.e. process track is significantly short, reduces the length of process track, subtract Floor space is lacked, has made factory building utilization rate high, when especially site operation sets up production line, construction cost reduces 12-15%.

Claims (3)

1. a kind of manufacture method of epoxy resin pipeline, it is characterised in that comprise the following steps:
A. steel pipe is put into pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe after pickling is rinsed well and dried with clear water, standby,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous spray epoxy powder of steel pipe,
E. it is heating and curing,
F. Temperature fall;
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe conveyer, and outer spray coating device is interior Spray equipment and powder recovering device, being used on inner spray coating device connect interior spray gun(26)Extension tube(25)For hydraulic-driven Stretching structure;
Step D job step is:
First, the spacing of two moving carts is adjusted according to length of steel pipe, and moving cart is fixed to process rail by fixture block On road;The distance between motor cabinet of each moving cart is adjusted according to the thickness of steel pipe caliber, in regulation on spray gun traveling box Regulating bolt, interior spray gun is located at the circle centre position of such a steel pipe, it is small that the steel pipe after heating in medium frequency by overhead traveling crane hangs in movement At the groove of the rotating wheel of car, steel pipe rotary electric machine is synchronous, motion, steel pipe rotate in place with the rotation of rotating wheel in the same direction;
Secondly, two work boxs are made to be located at the both ends of steel pipe, interior spray gun is located at the both ends of steel pipe, and two interior spray gun traveling boxes are to entering And the time difference to entering is 5-10s, two work boxs are to entering and the time difference to entering is 5-10s, two interior spray gun traveling boxes, works The travel distance for making case is set as the 1/2+15cm of length of steel pipe, in extension tube traveling process, gradually spreads out more piece, end bar Shape magnet attracts each other with steel pipe inner wall, lowers the vibration of fix bar, the stabilization of spray gun in guarantee;I.e., interior spray gun traveling box, work + 15cm places in the middle part of steel pipe are moved to as case, then return;Because traveling existence time is poor, one of them interior spray gun traveling box, work After case return, another interior spray gun traveling box, work box have been advanced to close at the 1/2 of length of steel pipe, and seam crossing is repeated Spraying;
The manufacture method of epoxy resin pipeline, powder spray being carried out using electrostatic hot spray process, powder uses epoxy powder, High-pressure electrostatic corona field principle is utilized, coated steel pipe is grounded as positive pole, inside and outside spray gun spray nozzle and connects high pressure negative electricity Pole, make to form a powerful electric field between spray gun and steel pipe, for steel pipe after Medium frequency induction coil heats, pump box produces compressed air Powder is sent into spray gun from spray inner powder case, spray outer powder case to spray, the aciculiform electroplax on shower nozzle produces corona discharge, flows through Powder carries negative electrical charge, and under the double action of electrostatic field and delivery gas, orientation flies to steel pipe internal-surface, is melted with becoming State;Pipeline is sent into baking-curing in curing oven again, temperature control is at 225-260 DEG C;Temperature fall, strengthen the attached of powder Put forth effort, become epoxy resin pipe;
Inner spray coating device includes two interior spray gun traveling boxes(22), discharge tube(34), interior spray gun(26)With spray inner powder case(20), it is interior Spray gun traveling box(22)Positioned at corresponding moving cart(9)Outside, interior spray gun traveling box(22)Bottom be provided with road wheel and Road wheel and process track(11)Match, interior spray gun traveling box(22)Middle part be provided with fixing pipe(23), fixing pipe(23) Be fixedly arranged at the front end with extension tube(25), extension tube(25)For the stretching structure of hydraulic-driven, extension tube(25)For more piece, interior spray gun Traveling box(22)Bottom be fixed with bottom plate(24), bottom plate(24)On be fixed with hydraulic pump, hydraulic pump and extension tube(25)Between Connected by hydraulic oil pipe, often save extension tube(25)End be fixed with suspender(35), suspender(35)Top it is integrally formed It is provided with the fixing groove of arcuation(39), suspender(35)Inwall on be embedded with some balls(38), a section extension tube of front end (25)End be fixed with fix bar(36), fix bar(36)Four walls be embedded with the wide bar magnets of 2-5cm(37), fix bar (36)End be fixed with interior spray gun(26), interior spray gun(26)With discharge tube(36)Plug together connection, a section extension tube of least significant end (25)Bottom be fixedly connected with coil pipe case(32), coil pipe case(32)Side wall and interior spray gun traveling box(22)Between fixed connect Connect, coil pipe case(32)Middle part be provided with spool(33), coil pipe case(32)External stability have a coil motor, coil motor it is defeated Shaft and spool(33)It is fixedly connected, coil motor driving spool rotates and then realizes discharge tube(34)Folding and unfolding, discharge tube (34)Through often saving extension tube(25)On suspender(35)And pass through spool(33)After winding with fixing pipe(23)Middle part plug together Connection, spray inner powder case(20)Plugged together by connecting tube and be connected to fixing pipe(23);Fixing pipe(23)Tube wall up and down both sides fix There are two groups of regulating bolts(21), regulating bolt(21)With bottom plate, interior spray gun traveling box(22)Top threaded connection, regulating bolt (21)Precession or back-out so adjust fixing pipe(23)Apart from bottom plate(24)Height, that is, have adjusted interior spray gun apart from ground Height is so that interior spray gun(26)Adapt to the steel pipe of different tube diameters and ensure interior spray gun(26)The circle centre position of this steel pipe is suspended from, sprays inner powder Case(20)Pump box is inside provided with, pump box drives powder along fixing pipe(23), interior spray gun(26)Spray;
Steel pipe conveyer includes process track(11), process track(11)On be provided with two moving carts(9), moving cart (9)Bottom be provided with road wheel(10), road wheel(10)With process track(11)Match, each moving cart(9)It is upper Portion is integrally formed to be provided with slide rail, each moving cart(9)On slide rail on slidably connect two motor cabinets(8), motor Seat(8)Side be provided with frame plate(2), frame plate(2)With moving cart(9)Between be fixedly connected, motor cabinet(8)On be fixed with steel Pipe rotary electric machine(7)And shaft coupling(1), steel pipe rotary electric machine(7)Output shaft and shaft coupling(1)One end be fixedly connected, join Axle device(1)The other end be provided with power transmission shaft, power transmission shaft and frame plate(2)Between axis connection, power transmission shaft is fixedly arranged in the middle of rotation Wheel(2), the integrally formed groove for being provided with L shapes in the edge of rotating wheel, steel pipe rotary electric machine(7)Pass through shaft coupling(1)Drive Rotating wheel(6)Rotate, two moving carts(9)On rotating wheel(6)On groove(3)Place's erection has steel pipe(4), rotating wheel (6)Make steel pipe(4)Rotate in place, two moving carts(9)In process track(11)Upper distance change to adapt to different length The steel pipe of degree(4), by bolt by motor cabinet(8)Fixed on slide rail so that adjust two motor cabinets(8)Distance, that is, adjust Two rotating wheels(6)Spacing to adapt to the steel pipe of different tube diameters(4);
Stepper motor is provided with work box, on interior spray gun traveling box, for driving it to move or retreating.
2. the manufacture method of epoxy resin pipeline according to claim 1, it is characterised in that outer spray coating device includes two works Make case(13)With two groups of work box tracks(19), work box track(19)Positioned at process track(11)Both sides, each work box (13)Side be provided with the outer powder case of spray(12), opposite side is provided with collection box(18), work box(13)In n shape, work box (13)A side wall be fixed with how exclusive spray gun(14), adjacent two exclusive spray gun(14)It is intersected with each other, intersecting angle 30-60 Degree, work box(13)Opposite side axis connection have brush axle(16), brush axle(16)Top is provided with brush spindle motor, and brush spindle motor is located at Work box(13)It is interior, output shaft and the brush axle of brush spindle motor(16)It is fixedly connected, brush axle(16)On be socketed with suction plastering roller(17), Inhale plastering roller(17)For superfine fibre textile, collection box(18)Inside it is provided with blower fan and powder falling storehouse, collection box(18)Side wall Integrally formed be provided with inhales powder mouth, inhales plastering roller(17)Positioned at the side for inhaling powder mouth, outer powder case is sprayed(13)Pump box is inside provided with, Pump box drives powder along outer spray gun(14)It is ejected into steel pipe(4)On outer wall, work box(13)Bottom be hooked with backplate(15), Backplate(15)Bottom it is integrally formed be provided with half slot, half slot is and steel pipe(4)Top, spray outer powder case(12), return Receive case(18)Bottom be provided with road wheel and road wheel and work box track(19)Match.
3. the manufacture method of epoxy resin pipeline according to claim 1 or claim 2, it is characterised in that powder recovering device includes Connect powder tank(5), connect powder tank(5)It is fixed on process track(11)Between, connect powder tank(5)Positioned at the underface of steel pipe, work box (13)Across connecing powder tank(5)Top, outer spray gun(14)The powder part of ejection, which is fallen within, connects powder tank(5)It is interior, connect powder tank(5)In Portion, both ends are integrally formed respectively is provided with Ji Fenkou(29), connect powder tank(5)Section be semicircle shape, connect powder tank(5)Bottom insert Conjunction is connected with mozzle(30), multiple mozzles(30)Pass through recovery tube(31)Series connection, recovery tube(31)With collection box(18)Phase Connection, backplate(15)The both sides of half slot integrally formed be provided with link(28), link(28)On be hooked with rubber flap, Rubber flap is in semicircle shape, and rubber flap moves with two work boxs and then the powder connect in powder tank is pushed into Ji Fenkou (29)Near, collection box(18)The suction of interior blower fan will inhale plastering roller(17), connect powder tank(5)On powder suction collection box (18)And drop into powder falling storehouse.
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