CN105413978B - A kind of parallel arrangement of tunnel synchronization spraying and cured processing method - Google Patents

A kind of parallel arrangement of tunnel synchronization spraying and cured processing method Download PDF

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Publication number
CN105413978B
CN105413978B CN201510694227.5A CN201510694227A CN105413978B CN 105413978 B CN105413978 B CN 105413978B CN 201510694227 A CN201510694227 A CN 201510694227A CN 105413978 B CN105413978 B CN 105413978B
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steel pipe
spray gun
powder
traveling
box
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CN105413978A (en
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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
    • 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
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0405Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
    • B05B13/041Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/10Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
    • 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
    • B05D3/0218Pretreatment, e.g. heating the 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
    • 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
    • B05D3/102Pretreatment of metallic substrates

Abstract

The invention discloses a kind of parallel arrangement of tunnel synchronization spraying and cured processing method, wherein, include the following steps:A. steel pipe is put into pickling tube, carry out acid pickling and rust removing operation, B. the steel pipe after pickling is rinsed well and is dried with clear water, it is spare, C. to the steel pipe heating in medium frequency obtained by step B, D. electrostatic spray is to the inside and outside synchronous plastic-coated of steel pipe, and E. is heating and curing, and pipeline before curing movement by the way of moving side by side;F. Temperature fall, step D carry out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe transmission device, outer spray coating device, inner spray coating device, powder recovering device and pipeline mobile device side by side.The method of the present invention is simple, easy to use, can improve production efficiency, spray gun is avoided to tremble, and dusts uniformly and powder using efficiency is high, and without slinging pipeline repeatedly, pipeline can move side by side.

Description

A kind of parallel arrangement of tunnel synchronization spraying and cured processing method
Technical field:
The present invention relates to pipe technology field, be specifically related to a kind of parallel arrangement of tunnel synchronization spraying and it is cured plus Work method.
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, inner coating 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 inner wall(Outer wall also may be used when needing)Coating Plastics form, and have 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, There is high mechanical strength, it is pressure-resistant, heat-resist.Since matrix is steel pipe, so there is no embrittlement, problem of aging.It can It is widely used in the fluid conveyings such as tap 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 substance, can reduce resistance during conveying, improves flow and transfer efficiency, reduces delivery pressure Power is lost, and by continuously improving the Recipe of powdery paints, makes the respective coatings to be formed performance is more prominent to have become certainty. It is solvent-free in coating, substance can not be oozed out, because without polluting conveyed medium, so as to ensure the clarity of fluid and health Property, -40 DEG C to+80 DEG C ranges can cold cycling be used alternatingly, not aging is not cracked, thus can be severe in cold zone etc. It is 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 Form a film integrated method, using movable type spraying and heating apparatus, powder spray is made to be carried out at the same time with heating cure, 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 movable support and is placed in steel pipe, and railcar and movable support are connected to draft gear by steel wire rope On, Motionless electromagnetic cartridge heater and outer spray gun, air pump are connected to by ventilation duct on electrostatic spraying apparatus in railcar, electrostatic spraying Device is connected to by powder delivery hose in railcar and interior spray gun.This mode inside and outside wall synchronization spraying, Synchronous Heating are solid Change, simplify processing procedure.Moreover, the mode of this synchronous spraying has become the mainstream 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, It resets 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, movable support is by steel wire traction, and existing defects are as follows, and stent is located in pipeline, easily generates spraying position Cut, 4, rope traction make movable support not easy to operate when pipe end takes out or when being placed into other end initial position. 5th, Synchronous Heating curing is there are problems, 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 cured mode of Synchronous Heating substantially at present, and use system One case that is heating and curing can accommodate whole steel pipe and carry out whole heating.When the 6th, curing, solidification case is usually located at same with pipeline On straight line, the pipeline after spraying is sent directly into solidification case by walking dolly, baking and curing, this knot are heated by combustion gas Structure requirement production line is long, and for producing 6 meters of pipeline, then spray gun grows 6 meters, sprays 6 meters of line length, and 6 meters of solidification case is added The distance of outlet pipe, then often 25 meters of a line length, if the higher pipeline of processing length, then need workshop length longer.So And workshop distance can not be adjusted in reality, so, steel pipe is constantly sling usually using overhead traveling crane, slings, puts down, increases peace The occurrence probability of full accident.
For solution upper part technical problem, occurring some rigid spray guns on the market, i.e. steel tube end part sets up spray gun, Spray gun is pushed to advance by moving trolley, moving trolley lower part is laid with track, still, the other end is moved to from pipeline one end, sprays Rifle length is long to cause end to be trembleed, unevenness of dusting, moreover, long pipeline necessarily supports the track of the moving trolley of spray gun Distance increases, and increases floor space, greatly reduces plant area's utilization rate.But it reduces the length of rigid lance but can not solve Certainly longer pipeline(Such as 8 meters or more)Spraying.In view of this technical problem, it is simple to need to occur a kind of method, user Just, production efficiency can be improved, spray gun is avoided to tremble, dusts uniformly and powder using efficiency is high, and without slinging pipeline repeatedly A kind of parallel arrangement of tunnel synchronization spraying and cured processing method.
Invention content:
It is an object of the invention to overcome shortcoming in the prior art, it is simple to provide a kind of method, easy to use, energy Production efficiency is enough improved, spray gun is avoided to tremble, dusts uniformly and powder using efficiency is high, and without slinging one kind of pipeline repeatedly simultaneously The tunnel synchronization spraying of row setting and cured processing method.
To achieve these goals, the present invention provides a kind of parallel arrangement of tunnel synchronization spraying and cured processing sides Method, wherein, include 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 is dried with clear water, spare,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous plastic-coated of steel pipe,
E. it is heating and curing, and pipeline before curing movement by the way of moving side by side;
F. Temperature fall,
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe transmission device, trypsin method dress It puts, inner spray coating device, powder recovering device and pipeline mobile device side by side.
Steel pipe transmission device includes process track, and there are two moving trolley, the bottoms of moving trolley for setting on process track Traveling wheel is provided with, traveling wheel matches with process track, and the top of each moving trolley is integrally formed to be provided with sliding rail, often It is slidably connected on sliding rail in a moving trolley there are two motor cabinet, the side of motor cabinet is provided with frame plate, and frame plate and movement are small It is fixedly connected between vehicle, steel pipe rotary electric machine and shaft coupling, the output shaft and shaft coupling of steel pipe rotary electric machine is fixed on motor cabinet One end of device is fixedly connected, and the other end of shaft coupling is provided with transmission shaft, axis connection between transmission shaft and frame plate, in 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 is provided with steel pipe at the groove on rotating wheel in two moving trolleys, and rotating wheel rotates in place steel pipe, Two moving trolleys, 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 sliding rail so adjust two motor cabinets distance, 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 recycling bins, and work box is in n shape, and the one of work box Side wall is fixed with multiple rows of outer spray gun, and adjacent two exclusive spray gun is intersected with each other, intersecting angle be 30-60 degree, the opposite side of work box Axis connection has brush axis, is provided with brush spindle motor above brush axis, brush spindle motor is located in work box, the output shaft and brush of brush spindle motor Axis is fixedly connected, and is socketed with suction plastering roller on brush axis, and suction plastering roller is superfine fibre textile, be provided in recycling bins wind turbine and Powder falling storehouse, integrally formed be provided with of the side wall of recycling bins inhale powder mouth, inhale plastering roller and be located at the side for inhaling powder mouth, spray in outer powder case Pump box is provided with, pump box drives powder, and the lower part 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 recycling bins is provided with Traveling wheel and traveling wheel matches with work box track.
Inner spray coating device includes two interior spray gun traveling boxes, and spray gun traveling box is located at corresponding move in interior spray gun and spray inner powder case The outside of dynamic trolley, the bottom of interior spray gun traveling box is provided with traveling wheel and traveling wheel matches with process track, interior spray gun row It walks and fixing pipe is provided in the middle part of case, extension tube is socketed in fixing pipe, one end end of extension tube is fixed with interior spray gun, extends One end of pipe is connected by connecting tube with spray inner powder case, and the tube wall of fixing pipe is fixed with two groups of adjusting bolts in both sides up and down, interior The lower part of spray gun traveling box is fixed with bottom plate, and adjusting bolt is threadedly coupled with the top of bottom plate, interior spray gun traveling box, adjusting bolt Precession or back-out and then adjust height of the fixing pipe apart from bottom plate, that is, have adjusted height of the interior spray gun apart from ground so that interior spray Rifle 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, sprays in inner powder case and is provided with pump box, pump box Powder is driven to be sprayed along extension tube, interior spray gun, extension tube is steel part.
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 diversion pipe, more A diversion pipe is connected by recovery tube, and recovery tube is connected with recycling bins, the integrally formed setting in both sides of the half slot of backplate There is link, rubber flap is hooked on 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 wind turbine in recycling bins will inhale plastering roller, connect powder in powder tank Sucking recycling bins are simultaneously dropped into powder falling storehouse.
Mobile device includes two groups of cross slide ways to pipeline side by side and two transfer trolleies, the bottom for shifting trolley are provided with row It walks wheel and traveling wheel matches with cross slide way, hydraulic cylinder is fixed on the outside of moving trolley, passes through hydraulic-driven on hydraulic cylinder There is hydraulic stem, the end axis of hydraulic stem is connected with driven wheel, and the center of gravity of hydraulic stem is located at the side in the center of circle of steel pipe, shifts trolley Central integration be provided with holding groove, be bonded with elastic insert in holding groove, the side for shifting trolley is integrally formed Leading arm is provided with, leading arm extends to holding groove in arcuation and slow deformation, and the lower part of leading arm is fixedly connected with supporting rack, The leading arm for shifting trolley can be tangent with rotating wheel, and Driven by Hydraulic Cylinder hydraulic stem rises and driven wheel is made to jack up steel pipe and makes steel Pipe is deviated towards leading arm and is rolled, and after steel pipe drops into holding groove, steel pipe is sent into solidification case by shifting trolley, solidification case with The total length to reduce production line is arranged side by side in process track, and combustion gas inlet pipe is provided in solidification case.
The work step of step D is:
First, the spacing of two moving trolleys is adjusted according to length of steel pipe, and moving trolley is fixed to work by fixture block On sequence track;The distance between motor cabinet of each moving trolley is adjusted according to the thickness of steel pipe caliber, spray gun is walked in adjusting Adjusting bolt on case makes interior spray gun be located at the circle centre position of such steel pipe, and the steel pipe after heating in medium frequency hangs in shifting by overhead traveling crane At the groove of the rotating wheel of dynamic trolley, steel pipe rotary electric machine is synchronous, movement in the same direction, and steel pipe is revolved with the rotation original place of rotating wheel Turn;
Secondly, two work boxs is 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 into and into time difference for 5-10s, two work boxs into and into time difference be 5-10s, two interior spray guns walkings Case, work box travel distance be set as the 1/2+15cm of length of steel pipe, i.e., interior spray gun traveling box, work box move to steel + 15cm locates in the middle part of pipe, then return;Because traveling existence time is poor, after one of them interior spray gun traveling box, work box return, separately One 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 to spray.
Finally, transfer trolley is moved into laterally, Driven by Hydraulic Cylinder hydraulic stem more tangent than with rotating wheel along cross slide way It rises, because the center of gravity of hydraulic stem is located at the side in the center of circle of steel pipe, driven wheel jacks up steel pipe and steel pipe is made to be deviated towards leading arm It rolls, steel pipe is tumbled to pressure tank, the steel pipe after using actuating unit or using two groups of transfer trolleies of Manual-pushing by plastic-coated It is sent into solidification case, combustion gas inlet pipe gas supply carries out curing operation.
On work box, stepper motor (i.e. movable motor) is both provided on interior spray gun traveling box, for drive its move or It retreats.
The present invention carries out powder spray using electrostatic hot spray process, i.e., using high-pressure electrostatic corona field principle, will be applied Steel pipe ground connection is covered as anode, and inside and outside spray gun spray nozzle connects high pressure negative electrode, makes to form a powerful electricity between spray gun and steel pipe , after Medium frequency induction coil heats, pump box generates compressed air and powder is sent to spray gun from spray inner powder case, spray outer powder case steel pipe It sprays, the aciculiform battery plate on nozzle generates corona discharge, and the powder flowed through carries negative electrical charge, in electrostatic field and delivery gas Double action under, orientation flies to steel pipe internal-surface, with becoming molten condition;It is solid that pipeline is sent into baking in curing oven again Change, temperature is controlled at 225-260 DEG C;Temperature fall strengthens the adhesive force of powder.Become plastics coated tube.During spraying, spray gun and pipe There are the inclinations angle of 15-45 degree for wall.
Advantages of the present invention is:Method is simple, easy to use, can improve production efficiency, spray gun is avoided to tremble, and dusts Even and powder using efficiency is high.Specially:
1st, the present invention is using to by the way of, and to poor into existence time, and spray gun in every group, object for appreciation spray gun is made to reach steel pipe At 1/2+15cm distances, i.e., there are the repetition spraying of 15cm at, both saved general spray time, improved work efficiency Simultaneously seam crossing perfection can again docked.
2nd, the present invention is using to by the way of, i.e., rigid interior spray gun can be the half length of conventional lance, with 12 meters For steel tube inner spray applies, if spray gun in 12 meters of extension tube fixation, with movement, extend tube end trembling seriously, largely effect on Coating quality in pipe.And it uses into mode, reducing the distance of extension tube half, i.e. 6 meters of extension tube can be realized, trembling It significantly reduces, coating quality is good in pipe.
3rd, it is recycled while the present invention is sprayed outside by inhaling plastering roller, being returned by Ji Fenkou in powder tank is connect for dropping into It receives, greatly reduces the waste situation of powder.(Excessive powder in pipe is collected well, only blows to opposite side with from side, and Be not in the situation of pollution and 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, steel pipe is shifted by the way of arranged side by side, without setting up overhead traveling crane, equipment investment cost is reduced, reduces the length of production line Degree reduces workshop length, reduces workshop building cost, builds production line production cost and reduces 20-25%.
Description of the drawings:
Fig. 1 is the structure diagram of the electrostatic spraying line of the present invention.
Fig. 2 is the structure diagram of the steel pipe transmission device of the present invention.
Fig. 3 is the side view of Fig. 2.
Structure diagram when Fig. 4 is outer spray coating device operation of the present invention.
Fig. 5 is the structure diagram of spray gun traveling box in the present invention.
Fig. 6 is the schematic top plan view for connecing powder tank of the present invention.
Fig. 7 is the status diagram of the recycling powder for connecing powder tank of the present invention.
Fig. 8 is the state diagram before the inventive pipeline side by side use of mobile device.
Fig. 9 be inventive pipeline side by side the use of mobile device when state diagram.
Specific 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 Structure diagram.Fig. 2 is the structure diagram of the steel pipe transmission device of the present invention.Fig. 3 is the side view of Fig. 2.Fig. 4 is the present invention Structure diagram during outer spray coating device operation.Fig. 5 is the structure diagram of spray gun traveling box in the present invention.Fig. 6 is the present invention The schematic top plan view for connecing powder tank.Fig. 7 is the status diagram of the recycling powder for connecing powder tank of the present invention.Fig. 8 is managed for the present invention The road state diagram before the use of mobile device side by side.Fig. 9 be inventive pipeline side by side the use of mobile device when state diagram.
A kind of parallel arrangement of tunnel synchronization spraying of the present invention and cured processing method, wherein, include 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 is dried with clear water, spare,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous plastic-coated of steel pipe,
E. it is heating and curing, and pipeline before curing movement by the way of moving side by side;
F. Temperature fall,
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe transmission device, trypsin method dress It puts, inner spray coating device, powder recovering device and pipeline mobile device side by side.
Steel pipe transmission device includes process track 11, and there are two moving trolley 9, moving trolleys 9 for setting on process track 11 Bottom be provided with traveling wheel 10, traveling wheel 10 matches with process track 11, and the top of each moving trolley 9 is integrally formed It is provided with sliding rail, being slidably connected on the sliding rail in each moving trolley 9, there are two motor cabinets 8, and the side of motor cabinet 8 is provided with frame Plate 2 is fixedly connected between frame plate 2 and moving trolley 9, and steel pipe rotary electric machine 7 and shaft coupling 1 are fixed on motor cabinet 8, and 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 transmission shaft, transmission shaft and frame Axis connection between plate 2, 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 trolleys 9 Place is provided with steel pipe 4, and rotating wheel 6 rotates in place steel pipe 4, and two moving trolleys 9 are in the upper distance change of process track 11 To adapt to the steel pipe 4 of different length, motor cabinet 8 is fixed on sliding rail and then the distance of two motor cabinets 8 of adjusting by bolt, The spacing of two rotating wheels 6 is had 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 recycling bins 18, and work box 13 is in n Shape, the one side wall of work box 13 are fixed with multiple rows of outer 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 axis 16, and 16 top of brush axis 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 axis 16, is socketed on brush axis 16 and is inhaled plastering roller 17, inhales plastering roller 17 be superfine fibre textile, and wind turbine and powder falling storehouse, the integrally formed setting of side wall of recycling bins 18 are provided in recycling bins 18 Have and inhale powder mouth, inhale plastering roller 17 and be located at the side for inhaling powder mouth, spray and pump box is provided in outer powder case 12, pump box driving powder along Outer spray gun 14 is ejected on 4 outer wall of steel pipe, and the bottom that the lower part of work box 13 is hooked with 15. backplate 15 of backplate integrally formed is set Half slot is equipped with, half slot is the top with steel pipe 4, sprays outer powder case 12, the bottom of recycling bins 18 is provided with traveling wheel and walking Wheel matches with work box track 19.
Inner spray coating device includes two interior spray gun traveling boxes 22, interior spray gun 26 and spray inner powder case 20, interior spray gun traveling box 22 Positioned at the outside of corresponding moving trolley 9, the bottom of interior spray gun traveling box 22 is provided with traveling wheel and traveling wheel and process track 11 Match, the middle part of interior spray gun traveling box 22 is provided with fixing pipe 23, and extension tube 25 is socketed in fixing pipe 23, extension tube 25 One end end is fixed with interior spray gun 26, and one end of extension tube 25 is connected by connecting tube with spray inner powder case 20, fixing pipe 23 Tube wall is fixed with two groups of adjusting bolts 21 in both sides up and down, and the lower part of interior spray gun traveling box 22 is fixed with bottom plate 24, adjusting bolt 21 Be threadedly coupled with the top of bottom plate, interior spray gun traveling box 22, the precession or back-out of adjusting bolt 21 so that adjust fixing pipe 23 away from Height from bottom plate 24 has adjusted height of the interior spray gun apart from ground so that interior spray gun 26 adapts to the steel pipe of different tube diameters and true Spray gun 26 is suspended from the circle centre position of this steel pipe in guarantor, is provided with pump box in spray inner powder case 20, pump box drive powder along extension tube 25, Interior spray gun 26 sprays, and extension tube 25 is steel part.
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 Diversion pipe 30 is connected with, multiple diversion pipes 30 are connected by recovery tube 31, and recovery tube 31 is connected with recycling bins 18, backplate 15 The both sides of half slot are integrally formed to be provided with link 28, rubber flap is hooked on link 28, 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 recycling bins 18 The suction of machine will inhale plastering roller 17, connect the powder sucking recycling bins 18 in powder tank 5 and drop into powder falling storehouse.
Mobile device includes two groups of cross slide ways 35 and two transfer trolleies 36 to pipeline side by side, and the bottom of transfer trolley 36 is set It is equipped with traveling wheel and traveling wheel matches with cross slide way 35, the outside of moving trolley 9 is fixed with hydraulic cylinder 32, on hydraulic cylinder 32 There is hydraulic stem by hydraulic-driven, the end axis of hydraulic stem is connected with driven wheel 33, and the center of gravity of hydraulic stem is located at the center of circle of steel pipe 4 Side, the central integration for shifting trolley 36 is provided with holding groove, elastic insert 38 is bonded in holding groove, and transfer is small The side of vehicle 36 is integrally formed to be provided with leading arm 34, and leading arm 34 extends to holding groove in arcuation and slow deformation, is oriented to The lower part of arm 34 is fixedly connected with supporting rack 37, and the leading arm of transfer trolley 36 can be tangent with rotating wheel 6, Driven by Hydraulic Cylinder liquid Compression bar rises and driven wheel is made to jack up steel pipe 4 and steel pipe 4 is made to deviate rolling towards leading arm, after steel pipe drops into holding groove, leads to It crosses transfer trolley and steel pipe is sent into solidification case 39, the overall length to reduce production line is arranged side by side with process track 11 for solidification case 39 It spends, combustion gas inlet pipe 40 is provided in solidification case 39.
On work box, stepper motor (i.e. movable motor 27) is both provided on interior spray gun traveling box, for driving its movement Or it retreats.
The work step of step D is:
First, the spacing of two moving trolleys is adjusted according to length of steel pipe, and moving trolley is fixed to work by fixture block On sequence track;The distance between motor cabinet of each moving trolley is adjusted according to the thickness of steel pipe caliber, spray gun is walked in adjusting Adjusting bolt on case makes interior spray gun be located at the circle centre position of such steel pipe, and the steel pipe after heating in medium frequency hangs in shifting by overhead traveling crane At the groove of the rotating wheel of dynamic trolley, steel pipe rotary electric machine is synchronous, movement in the same direction, and steel pipe is revolved with the rotation original place of rotating wheel Turn;
Secondly, two work boxs is 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 into and into time difference for 5-10s, two work boxs into and into time difference be 5-10s, two interior spray guns walkings Case, work box travel distance be set as the 1/2+15cm of length of steel pipe, i.e., interior spray gun traveling box, work box move to steel + 15cm locates in the middle part of pipe, then return;Because traveling existence time is poor, after one of them interior spray gun traveling box, work box return, separately One 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 to spray.
Finally, transfer trolley is moved into laterally, Driven by Hydraulic Cylinder hydraulic stem more tangent than with rotating wheel along cross slide way It rises, because the center of gravity of hydraulic stem is located at the side in the center of circle of steel pipe, driven wheel jacks up steel pipe and steel pipe is made to be deviated towards leading arm It rolls, steel pipe is tumbled to pressure tank, the steel pipe after using actuating unit or using two groups of transfer trolleies of Manual-pushing by plastic-coated It is sent into solidification case, combustion gas inlet pipe gas supply carries out curing operation.
The present invention carries out powder spray using electrostatic hot spray process, i.e., using high-pressure electrostatic corona field principle, will be applied Steel pipe ground connection is covered as anode, and inside and outside spray gun spray nozzle connects high pressure negative electrode, makes to form a powerful electricity between spray gun and steel pipe , after Medium frequency induction coil heats, pump box generates compressed air and powder is sent to spray gun from spray inner powder case, spray outer powder case steel pipe It sprays, the aciculiform battery plate on nozzle generates corona discharge, and the powder flowed through carries negative electrical charge, in electrostatic field and delivery gas Double action under, orientation flies to steel pipe internal-surface, with becoming molten condition;It is solid that pipeline is sent into baking in curing oven again Change, temperature is controlled at 225-260 DEG C;Temperature fall strengthens the adhesive force of powder.Become plastics coated tube.
Comparative experiments:
By taking the polyvinyl chloride spraying pipeline for producing 8m as an example, using background technology CN101823044A as first group.This Invention is as second group.Using an interior spray gun, it is that one group of outer spray coating device advances to the operating type of the other end from one end Three groups.Every group of processing ten, compares and is listed as follows:
Group Single pipe processes average time Interior spraying effect Trypsin method effect Powder dosage Produce line length or workshop length
First group 15min There is tomography, it is uneven Bottom is thin or nothing 40kg Need 15 meters
Second group 5min Uniformly, there is 15cm at repetition spraying in centre Uniformly, there is 15cm at repetition spraying in centre. 20kg Need 16 meters
Third group 10min It is uneven after 7m because interior spray gun trembles Uniformly 30kg Need 25 meters
To sum up, the method for the present invention is simple, easy to use, can improve production efficiency, spray gun is avoided to tremble, dust uniformly and Powder using efficiency is high.1st, the present invention is using to by the way of, and to poor into existence time, and spray gun in every group, object for appreciation spray gun is made to arrive Up at steel pipe 1/2+15cm distances, i.e., there are the repetition spraying of 15cm at, both saved general spray time, and improved work While efficiency again seam crossing perfection can dock.2nd, using to by the way of, i.e., rigid interior spray gun can be the present invention The half length of conventional lance, by taking 12 meters of steel tube inner sprays apply as an example, if spray gun in 12 meters of extension tube fixation, with movement, prolongs Long tube end trembling is serious, largely effects on the coating quality in pipe.And use into mode, reduce extension tube half away from From that is, 6 meters of extension tube can be realized, and trembling significantly reduces, and coating quality is good in pipe.3rd, pass through suction while the present invention is sprayed outside Plastering roller recycles, and connects being recycled by Ji Fenkou in powder tank for dropping into, greatly reduces the waste situation of powder.(In pipe Excessive powder collect well, only blow to opposite side with from side, and in pipe, be not in the situation of pollution, and Powder outside pipe becomes easily infected by dust, iron filings etc., so focusing on the recycling of the outer powder of pipe.)Using side arranged side by side Formula shifts steel pipe, without setting up overhead traveling crane, reduces equipment investment cost, the length for reducing production line reduces workshop length, reduces Workshop building cost builds production line production cost and reduces 20-25%.

Claims (1)

1. a kind of parallel arrangement of tunnel synchronization spraying and cured processing method, which is characterized in that include 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 is dried with clear water, spare,
C. to the steel pipe heating in medium frequency obtained by step B,
D. electrostatic spray is to the inside and outside synchronous plastic-coated of steel pipe,
E. it is heating and curing, and pipeline before curing movement by the way of moving side by side;
F. Temperature fall,
Step D carries out plastic-coated operation using electrostatic spraying line, and electrostatic spraying line includes steel pipe transmission device, and outer spray coating device is interior Spray equipment, powder recovering device and pipeline mobile device side by side;
Steel pipe transmission device includes process track (11), and there are two moving trolley (9), moving trolleys for setting on process track (11) (9) bottom is provided with traveling wheel (10), and traveling wheel (10) matches with process track (11), each moving trolley (9) it is upper Portion is integrally formed to be provided with sliding rail, and being slidably connected on the sliding rail on each moving trolley (9), there are two motor cabinet (8), motors The side of seat (8) is provided with frame plate (2), is fixedly connected between frame plate (2) and moving trolley (9), motor cabinet is fixed with steel on (8) Pipe rotary electric machine (7) and shaft coupling (1), the output shaft of steel pipe rotary electric machine (7) are fixedly connected with one end of shaft coupling (1), connection The other end of axis device (1) is provided with transmission shaft, axis connection between transmission shaft and frame plate (2), and transmission shaft is fixedly arranged in the middle of rotation It takes turns (2), the integrally formed groove for being provided with L shapes in the edge of rotating wheel, steel pipe rotary electric machine (7) is driven by shaft coupling (1) Rotating wheel (6) rotates, and steel pipe (4), rotating wheel are provided at the groove (3) on rotating wheel (6) on two moving trolleys (9) (6) rotate in place steel pipe (4), distance change of two moving trolleys (9) on process track (11) is to adapt to different length Steel pipe (4), by bolt by motor cabinet (8) fixed on sliding rail and then adjust two motor cabinets (8) distance, that is, have adjusted The spacing of two rotating wheels (6) is to adapt to the steel pipe of different tube diameters (4);
Inner spray coating device includes two interior spray gun traveling boxes (22), interior spray gun (26) and spray inner powder case (20), interior spray gun traveling box (22) positioned at the outside of corresponding moving trolley (9), the bottom of interior spray gun traveling box (22) is provided with traveling wheel and traveling wheel and work Sequence track (11) matches, and fixing pipe (23) is provided in the middle part of interior spray gun traveling box (22), is socketed with and prolongs in fixing pipe (23) Long tube (25), one end end of extension tube (25) are fixed with interior spray gun (26), and one end of extension tube (25) passes through connecting tube and spray Inner powder case (20) is connected, and the tube wall of fixing pipe (23) is fixed with two groups of adjusting bolts (21), interior spray gun traveling box in both sides up and down (22) lower part is fixed with bottom plate (24), and adjusting bolt (21) is threadedly coupled with the top of bottom plate, interior spray gun traveling box (22), adjusts The height of the precession or back-out and then adjusting fixing pipe (23) of bolt (21) apart from bottom plate (24) is saved, that is, has adjusted interior spray gun distance The height on ground so that interior spray gun (26) adapts to the steel pipe of different tube diameters and ensures that interior spray gun (26) is suspended from the circle centre position of this steel pipe, Pump box is provided in spray inner powder case (20), pump box drives powder to be sprayed along extension tube (25), interior spray gun (26), extension tube (25) For steel part;
Outer spray coating device includes two work boxs (13) and two groups of work box tracks (19), and work box track (19) is positioned at process rail The both sides in road (11), the side of each work box (13) are provided with the outer powder case (12) of spray, and opposite side is provided with recycling bins (18), work Make case (13) in n shape, the one side wall of work box (13) is fixed with multiple rows of outer spray gun (14), and adjacent two exclusive spray gun (14) is each other Intersect, intersecting angle is 30-60 degree, and the opposite side axis connection of work box (13) has brush axis (16), is provided with above brush axis (16) Brush spindle motor, brush spindle motor are located in work box (13), and the output shaft of brush spindle motor is fixedly connected with brush axis (16), brush axis (16) On be socketed with and inhale plastering roller (17), it is superfine fibre textile to inhale plastering roller (17), and wind turbine is provided in recycling bins (18) and is fallen Powder cabin, integrally formed be provided with of the side wall of recycling bins (18) inhale powder mouth, inhale plastering roller (17) positioned at the side for inhaling powder mouth, spray is outer Pump box is provided in powder case (12), pump box driving powder is ejected into along outer spray gun (14) on steel pipe (4) outer wall, work box (13) lower part is hooked with backplate (15), and the bottom of backplate (15) is integrally formed to be provided with half slot, and half slot is and steel pipe (4) outer powder case (12) is sprayed in top, the bottom of recycling bins (18) is provided with traveling wheel and traveling wheel and work box track (19) phase Matching;
Powder recovering device includes connecing powder tank (5), connects powder tank (5) and is fixed between process track (11), connects powder tank (5) positioned at steel The underface of pipe, for work box (13) across the top for connecing powder tank (5), the powder part that outer spray gun (14) sprays, which is fallen within, connects powder tank (5) in, the middle part of powder tank (5) is connect, both ends are integrally formed are provided with Ji Fenkou (29) respectively, the section for connecing powder tank (5) is semicircle Shape, the bottom for connecing powder tank (5) are plugged and connected with diversion pipe (30), and multiple diversion pipes (30) are connected by recovery tube (31), recycling Pipe (31) is connected with recycling bins (18), and the both sides of the half slot of backplate (15) are integrally formed to be provided with link (28), link (28) rubber flap is hooked on, rubber flap is in semicircle shape, and rubber flap is as two work boxs move and then will connect powder tank Interior powder is pushed near Ji Fenkou (29), and the suction of the wind turbine in recycling bins (18) will inhale plastering roller (17), connect powder tank (5) On powder sucking recycling bins (18) and drop into powder falling storehouse;
Mobile device includes two groups of cross slide ways (35) and two transfer trolleies (36), the bottom of transfer trolley (36) to pipeline side by side It is provided with traveling wheel and traveling wheel matches with cross slide way (35), hydraulic cylinder (32), liquid are fixed on the outside of moving trolley (9) There is hydraulic stem by hydraulic-driven on cylinder pressure (32), the end axis of hydraulic stem is connected with driven wheel (33), the center of gravity position of hydraulic stem In the side in the center of circle of steel pipe (4), the central integration of transfer trolley (36) is provided with holding groove, is bonded in holding groove Elastic insert (38), the side of transfer trolley (36) is integrally formed to be provided with leading arm (34), leading arm (34) in arcuation and Slow deformation extends to holding groove, and the lower part of leading arm (34) is fixedly connected with supporting rack (37), the guiding of transfer trolley (36) Arm can be tangent with rotating wheel (6), and Driven by Hydraulic Cylinder hydraulic stem rises and driven wheel is made to jack up steel pipe (4) and makes steel pipe (4) court It deviates and rolls to leading arm, after steel pipe drops into holding groove, steel pipe is sent into solidification case (39), solidification case by shifting trolley (39) it is arranged side by side with process track (11) to reduce the total length of production line, solidification case is provided with combustion gas inlet pipe on (39) (40);
First, the spacing of two moving trolleys is adjusted according to length of steel pipe, and moving trolley is fixed to process rail by fixture block On road;The distance between motor cabinet of each moving trolley is adjusted according to the thickness of steel pipe caliber, in adjusting on spray gun traveling box Adjusting bolt, interior spray gun is made to be located at the circle centre position of such 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 vehicle, steel pipe rotary electric machine is synchronous, movement, steel pipe are rotated in place with the rotation of rotating wheel in the same direction;
Secondly, two work boxs is 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 into And into time difference for 5-10s, two work boxs into and into time difference be 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, i.e., interior spray gun traveling box, work box moved in the middle part of steel pipe + 15cm locates, then return;Because traveling existence time is poor, after one of them interior spray gun traveling box, work box return, in another 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 to spray;
Finally, transfer trolley is moved to laterally more tangent than with rotating wheel, Driven by Hydraulic Cylinder hydraulic stem rise along cross slide way, Because the center of gravity of hydraulic stem is located at the side in the center of circle of steel pipe, driven wheel jacks up steel pipe and steel pipe is made to be deviated towards leading arm and rolls, Steel pipe is tumbled to pressure tank, is reused actuating unit or is sent into steel pipe after plastic-coated using two groups of transfer trolleies of Manual-pushing In solidification case, combustion gas inlet pipe gas supply carries out curing operation;
Stepper motor is both provided on work box, on interior spray gun traveling box, for it to be driven to move or is retreated.
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CN106044259B (en) * 2016-08-10 2019-05-14 高密天一机械科技有限公司 Large-diameter steel pipe internal plastic coating automatic powder feeding device
CN108097501A (en) * 2017-12-28 2018-06-01 安庆市汇智科技咨询服务有限公司 A kind of two-sided paint spraying machine and the method for spraying aqueduct
CN110280416A (en) * 2019-06-28 2019-09-27 盐城东方天成机械有限公司 Coat painting facilities on the outside of a kind of large pipe
CN112756162A (en) * 2020-12-24 2021-05-07 山东国铭球墨铸管科技有限公司 Energy-saving coating system for nodular cast iron pipe

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