CN105413978A - Synchronous spraying and curing processing method for pipelines arranged in parallel - Google Patents
Synchronous spraying and curing processing method for pipelines arranged in parallel Download PDFInfo
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- CN105413978A CN105413978A CN201510694227.5A CN201510694227A CN105413978A CN 105413978 A CN105413978 A CN 105413978A CN 201510694227 A CN201510694227 A CN 201510694227A CN 105413978 A CN105413978 A CN 105413978A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000007590 electrostatic spraying Methods 0.000 claims abstract description 13
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines 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
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines 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
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means 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
- B05B13/0405—Means 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
- B05B13/041—Means 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines 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
- B05B13/06—Machines 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a synchronous spraying and curing processing method for pipelines arranged in parallel. The method includes the following steps that A, steel pipes are thrown into an acid pickling pond to be subjected to acid pickling for removing rust; B, the steel pipes subjected to acid pickling are cleanly flushed through clear water and then are dried for standby application; C, the steel pipes obtained in the step B are subjected to medium frequency heating; D, the interiors and the exteriors of the steel pipes are subjected to synchronous plastic coating through an electrostatic spraying method; E, heating and curing are carried out, and the pipelines are moved side by side before being cured; and F, natural cooling is conducted. In the step D, the plastic coating operation is carried out through an electrostatic spraying line, and the electrostatic spraying line comprises a steel pipe conveying device, an external spraying device, an internal spraying device, a powder recovery device and a pipeline side-by-side moving device. The method is simple, using is convenient, and production efficiency can be improved; a spray gun can be prevented from vibrating, powder is uniformly sprayed, and the powder utilization rate is high; the pipelines do not need to be lifted repeatedly and can be moved side by side.
Description
Technical field:
The present invention relates to pipe technology field, the tunnel synchronization being specifically related to a kind of parallel setting sprays and the processing method of solidifying.
Background technology:
The coating pipe of steel pipe has galvanized pipe, the steel pipe of aluminize pipe, chromium-plated tube, aluminizing pipe and other alloy-layers.Coated pipe has external coating pipe, undercoating pipe, inside and outside coating pipe.The coating of usual employing has the corrosion-inhibiting coating material of plastics, epoxy resin, coal tar epoxy and various glass mould.Coating steel pipes forms in inwall (when needing outer wall also can) applied plastic through powder melts spraying technology, its excellent performance.Compared with galvanized pipe, there is anticorrosive, non-corrosive, not incrustation, smooth smoothness, clean nontoxic, the advantages such as long service life.According to test, the service life of steel-plastics composite pipe is more than three times of galvanized pipe.Compared with plastic tube, there is mechanical strength high, the advantage such as withstand voltage, good heat resistance.Because matrix is steel pipe, so there is not embrittlement, problem of aging.The fluid conveyings such as running water, coal gas, chemical products and heating engineering can be widely used in.
Plastic-coated steel is that applied plastic forms on large-caliber spiral welded tube and ratio-frequency welded tube basis, application of polyvinyl (PVC) can be needed according to different, polyethylene (PE), the plastic coating of the various different performances such as epoxy resin (EPOZY), adhesive force is good, corrosion resistance is strong, can resistance to strong acid, highly basic and other chemical attack, nontoxic, not corrosion, wear-resisting, shock-resistant, osmotic-pressure-tolerant is strong, pipe surface is smooth, do not adhere to any material, resistance during conveying can be reduced, improve flow and transfer efficiency, reduce discharge pressure loss, by updating the Recipe of powdery paints, make that the respective coatings performance of formation is more outstanding has become inevitable.Solvent-free in coating, can not material be oozed out, thus can not pollute carried medium, thus ensure clarity and the wholesomeness of fluid, can cold cycling be used alternatingly-40 DEG C to+80 DEG C scopes, not aging, do not chap, thus can use under the environment that cold zone etc. is harsh.
Existing technique, as Chinese patent application CN101823044A discloses the method for a kind of steel pipe inside and outside wall powder spraying, curing film forming integration, use portable spraying and heating apparatus, powder spray and heating cure are carried out simultaneously, adopt draw-gear, the gentle spraying that adds of steel pipe is at the uniform velocity advanced, steel pipe along orbital direction erection in orbit, railcar is across on steel pipe, interior gunjet rack to be located on travel(l)ing rest and to be placed in steel pipe, railcar and travel(l)ing rest are connected on draw-gear by steel wire rope, railcar internal fixtion electromagnetic heating device and outer spray gun, air pump is connected on electrostatic spraying apparatus by ventilation duct, electrostatic spraying apparatus is connected on railcar and interior spray gun by powder delivery hose.This mode inside and outside wall synchronously sprays, Synchronous Heating solidification, simplifies processing procedure.And the mode of this synchronous spraying has become the main flow in market.But defect is as follows: 1, steel pipe maintains static, cause outer spray uneven, namely bottommost sprayed coating is thin, 2, inside and outside spray gun moves to opposite side from side, then reset; Then just can carry out the spraying of next steel pipe, efficiency is not high, and Powder Recovery is under-utilized, and the waste of plastic-coated powder is serious.3, travel(l)ing rest is by steel wire traction, and existing defects is as follows, and support is positioned at pipeline, easily makes spraying position generation cut, and 4, rope traction makes travel(l)ing rest when pipe end takes out, or all not easy to operate when being placed into other end original position.5, there are problems in Synchronous Heating solidification, and because electromagnetic heating device cannot cover pipeline entirety, and electromagnetic heating device constantly moves, and cause heating uneven, solidification effect is bad.So, substantially abandon the mode of Synchronous Heating solidification at present, and adopted the unified case that is heating and curing, whole steel pipe can have been held and carry out entirety heating.6, during solidification, solidification case is usually located along the same line with pipeline, directly to be sent into by the pipeline after spraying solidify in case by walking dolly, to be heated baking and curing by combustion gas, this structural requirement production line is long, to produce the pipeline of 6 meters, then and long 6 meters of spray gun, spraying line length 6 meters, solidification 6 meters, case, adds out the distance of pipe, then line length often 25 meters, if the pipeline that processing length is higher, then need factory building length longer.But factory building distance cannot regulate in reality, so, usually use overhead traveling crane constantly to sling steel pipe, sling, put down, increase the occurrence probability of security incident.
For solving upper part technical problem, there is the spray gun of some rigidity on the market, i.e. steel tube end part erection spray gun, promote spray gun by travelling car to advance, track is laid in travelling car bottom, but, move to the other end from pipeline one end, the long end that causes of spray gun length is trembleed, to dust inequality, and the orbital distance that long pipeline necessarily supports the travelling car of spray gun increases, add floor space, plant area's utilization rate is greatly reduced.But but the length reducing rigid lance cannot solve longer pipeline (such as more than 8 meters) spraying.In view of this technical problem, need to occur that a kind of method is simple, easy to use, can enhance productivity, avoid spray gun to tremble, to dust evenly and powder using efficiency is high, and spray and the processing method of solidifying without the need to the tunnel synchronization of a kind of parallel setting of pipeline of repeatedly slinging.
Summary of the invention:
The object of the invention is to overcome the shortcoming existed in prior art, there is provided a kind of method simple, easy to use, can enhance productivity, spray gun is avoided to tremble, dust evenly and powder using efficiency is high, and spray and the processing method of solidifying without the need to the tunnel synchronization of a kind of parallel setting of pipeline of repeatedly slinging.
To achieve these goals, the tunnel synchronization that the invention provides a kind of parallel setting sprays and the processing method of solidifying, and wherein, comprises the steps:
A. steel pipe is put in pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe clear water after pickling is rinsed well and dries, for subsequent use,
C. to the steel pipe heating in medium frequency of step B gained,
D. electrostatic spray is to plastic-coated synchronous inside and outside steel pipe,
E. be heating and curing, and the pipeline before solidification moves the mode of employing movement side by side;
F. Temperature fall,
Step D uses electrostatic spraying line to carry out plastic-coated operation, and electrostatic spraying line comprises steel pipe conveyer, outer spray coating device, inner spray coating device, powder recovering device and pipeline mobile device side by side.
Steel pipe conveyer comprises operation track, operation track is provided with two travelling cars, the bottom of travelling car is provided with road wheel, road wheel and operation track match, the top of each travelling car is integrated is provided with slide rail, slide rail on each travelling car slidably connects two motor cabinets, the side of motor cabinet is provided with frame plate, be fixedly connected with between frame plate with travelling car, motor cabinet is fixed with steel pipe rotary electric machine and shaft coupling, the output shaft of steel pipe rotary electric machine is fixedly connected with one end of shaft coupling, the other end of shaft coupling is provided with power transmission shaft, power transmission shaft is connected with the countershaft of frame plate, the middle part of power transmission shaft is fixed with moving runner, the integrated groove being provided with L shape in the edge of moving runner, steel pipe rotary electric machine drives moving runner to rotate by shaft coupling, groove place erection on moving runner on two travelling cars has steel pipe, moving runner makes steel pipe original place rotate, two travelling cars change in the upper distance of operation track with the steel pipe adapting to different length, by bolt, motor cabinet be fixed on slide rail and then regulate the distance of two motor cabinets, namely have adjusted the spacing of two moving runners to adapt to the steel pipe of different tube diameters.
Outer spray coating device comprises two work boxs and two groups of work box tracks, work box track is positioned at the both sides of operation track, the side of each work box is provided with the outer powder case of spray, opposite side is provided with collection box, work box is n shape, one sidewall of work box is fixed with how exclusive spray gun, adjacent two exclusive spray guns are intersected with each other, intersecting angle is 30-60 degree, another side shaft of work box is connected with brush axle, brush spindle motor is provided with above brush axle, brush spindle motor is positioned at work box, the output shaft of brush spindle motor is fixedly connected with brush axle, brush axle is socketed with suction plastering roller, inhaling plastering roller is superfine fibre textile, blower fan and powder falling storehouse is provided with in collection box, integrated being provided with of the sidewall of collection box inhales powder mouth, inhale plastering roller and be positioned at the side of inhaling powder mouth, spray in outer powder case and be provided with pump box, pump box drives powder along outer lance ejection on outer wall of steel pipe, the lower hook of work box hangs with backplate. and the bottom of backplate is integrated is provided with half slot, half slot is the top with steel pipe, spray outer powder case, the bottom of collection box is provided with road wheel and road wheel and work box track match.
Inner spray coating device comprises two interior spray gun walking casees, interior spray gun is positioned at the outside of corresponding travelling car with spray gun walking case in powder case in spray, the bottom of interior spray gun walking case is provided with road wheel and road wheel and operation track match, the middle part of interior spray gun walking case is provided with stationary pipes, stationary pipes is socketed with extension tube, one end end winding support of extension tube has interior spray gun, one end of extension tube is connected with powder case in spray by tube connector, the upper and lower both sides of tube wall of stationary pipes are fixed with two groups of adjusting bolts, the bottom of interior spray gun walking case is fixed with base plate, adjusting bolt and base plate, the top of interior spray gun walking case is threaded, the height of the precession of adjusting bolt or back-out and then adjustment stationary pipes distance base plate, namely the height that have adjusted interior spray gun distance ground adapts to the steel pipe of different tube diameters to make interior spray gun and guarantees that interior spray gun is suspended from the circle centre position of this steel pipe, pump box is provided with in powder case in spray, pump box drives powder along extension tube, interior spray gun ejection, extension tube is steel part.
Powder recovering device comprises and connects powder groove, connecing powder groove is fixed between operation track, connect powder slot immediately below steel pipe, work box is across the top connecing powder groove, the powder fractions of outer spray gun ejection falls within and connects in powder groove, connect the middle part of powder groove, two ends are one-body molded is respectively provided with Ji Fenkou, the cross section connecing powder groove is semicircle shape, the bottom connecing powder groove is plugged and connected with mozzle, multiple mozzle is connected by recovery tube, recovery tube is connected with collection box, the both sides of the half slot of backplate are integrated is provided with link, link is hooked with rubber flap, rubber flap is semicircle shape, rubber flap is along with two work box motions and then be pushed into by the powder connect in powder groove near collection powder mouth, the suction of the blower fan in collection box will inhale plastering roller, the powder connect on powder groove sucks collection box and drops in powder falling storehouse.
Pipeline side by side mobile device comprises two groups of cross slide waies and two transfer dollies, the bottom of transfer dolly is provided with road wheel and road wheel and cross slide way match, the outside of travelling car is fixed with hydraulic cylinder, hydraulic cylinder there is hydraulic stem by hydraulic-driven, the end axis of hydraulic stem is connected with driven pulley, the center of gravity of hydraulic stem is positioned at the side in the center of circle of steel pipe, transfer dolly integral middle shaping be provided with holding groove, elastic insert is bonded with in holding groove, the side of transfer dolly is integrated is provided with leading arm, leading arm is arcuation and slowly deformation extends to holding groove, the bottom of leading arm is fixedly connected with bracing frame, the leading arm of transfer dolly can be tangent with moving runner, Driven by Hydraulic Cylinder hydraulic stem rises and makes driven pulley jack-up steel pipe and steel pipe is rolled towards leading arm skew, after steel pipe drops into holding groove, by transfer dolly, steel pipe is sent into solidification case, solidification case and operation track are arranged side by side the total length reducing production line, solidification case is provided with combustion gas inlet pipe.
The job step of step D is:
First, according to the spacing of steel pipe length adjustment two travelling cars, and travelling car is fixed on operation track by fixture block; Distance between the motor cabinet regulating each travelling car according to the thickness of steel pipe caliber, adjusting bolt in regulating on spray gun walking case, interior spray gun is made to be positioned at the circle centre position of this kind of steel pipe, steel pipe after heating in medium frequency hangs in the groove place of the moving runner of travelling car by overhead traveling crane, steel pipe rotary electric machine synchronously, in the same way moves, and steel pipe rotates along with the rotation original place of moving runner;
Secondly, two work boxs are made to be positioned at the two ends of steel pipe, interior spray gun is positioned at the two ends of steel pipe, two interior spray gun walking casees are to entering and be 5-10s to the time difference of entering, two work boxs are to entering and be 5-10s to the time difference of entering, the travel distance of two interior spray gun walking casees, work box is all set as the 1/2+15cm of steel pipe length, and namely, interior spray gun walking case, work box move to+15cm place in the middle part of steel pipe, then return; Because to advance life period difference, in one of them after spray gun walking case, work box return, spray gun walking case in another, work box have advanced to 1/2 place close to steel pipe length, seam crossing are repeated spraying.
Finally, transfer dolly is moved to laterally than tangent with moving runner along cross slide way, Driven by Hydraulic Cylinder hydraulic stem rises, center of gravity because of hydraulic stem is positioned at the side in the center of circle of steel pipe, driven pulley jack-up steel pipe and make steel pipe towards leading arm skew roll, steel pipe tumbles in pressure tank, and after using actuating unit or using Manual-pushing two groups transfer dolly by plastic-coated, steel pipe is sent in solidification case, and combustion gas inlet pipe air feed is cured operation.
Stepper motor (i.e. movable motor) is provided with, for driving its motion or retreating on work box, on interior spray gun walking case.
The present invention adopts electrostatic hot spray process to carry out powder spray, namely high-pressure electrostatic corona field principle is utilized, using coated steel pipe ground connection as positive pole, in, outer spray gun spray nozzle connects high pressure negative electrode, make to form a powerful electric field between spray gun and steel pipe, steel pipe is after Medium frequency induction coil heats, pump box produces compressed air by powder from powder case in spray, spray outer powder case and deliver to spray gun ejection, aciculiform electroplax on shower nozzle produces corona discharge, make the powder flowed through with negative electrical charge, under the double action of electrostatic field and carrier gas, orientation flies to steel pipe internal-surface, become molten condition immediately, again pipeline is sent into baking-curing in curing oven, temperature controls at 225-260 DEG C, Temperature fall, strengthens the adhesive force of powder.Namely plastics coated tube is become.During spraying, there is the inclination angle of 15-45 degree in spray gun and tube wall.
Advantage of the present invention is: method is simple, easy to use, can enhance productivity, avoid spray gun tremble, dusts even and powder using efficiency is high.Be specially:
1, the present invention adopts the mode entered, and to entering life period difference, make often to organize interior spray gun, object for appreciation spray gun all arrives steel pipe 1/2+15cm distance, what namely there is 15cm repeats spraying place, both saved general spray time, seam crossing perfection docking while improve operating efficiency, can have been made again.
2, the present invention adopts the mode entered, and namely the interior spray gun of rigidity can be the half length of conventional lance, is painted with example with 12 meters of steel tube inner sprays, spray gun in if the extension tube of 12 meters is fixing, along with motion, the vibration of extension tube end is serious, greatly affects the coating quality in pipe.And adopt entering mode, decrease the distance of extension tube half, namely extension tube 6 meters can realize, and vibration obviously reduces, and in pipe, coating quality is good.
3, the present invention reclaims by inhaling plastering roller while spraying outside, connecing being reclaimed by Ji Fenkou in powder groove, greatly reducing the waste situation of powder for dropping into.(excessive powder in pipe is collected well, only blows to opposite side with from side, and is positioned at pipe, there will not be the situation of pollution, and the powder outside pipe becomes easily infected by dust, iron filings etc., so focus on the recycling of managing outer powder.）
4, adopt mode arranged side by side to shift steel pipe, without the need to setting up overhead traveling crane, reduce equipment investment cost, namely the length reducing production line reduce factory building length, reduces workshop building cost, builds production line production cost and reduce 20-25%.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of electrostatic spraying line of the present invention.
Fig. 2 is the structural representation of steel pipe conveyer of the present invention.
Fig. 3 is the side view of Fig. 2.
Structural representation when Fig. 4 is outer spray coating device operation of the present invention.
Fig. 5 is the structural representation of spray gun walking case in the present invention.
Fig. 6 is the schematic top plan view connecing powder groove of the present invention.
Fig. 7 is the view connecing the recovery powder of powder groove of the present invention.
Fig. 8 is the state diagram before the use of inventive pipeline mobile device side by side.
State diagram when Fig. 9 is the use of inventive pipeline mobile device side by side.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention will be described.As shown in Fig. 1-Fig. 9, Fig. 1 is the structural representation of electrostatic spraying line of the present invention.Fig. 2 is the structural representation of steel pipe conveyer of the present invention.Fig. 3 is the side view of Fig. 2.Structural representation when Fig. 4 is outer spray coating device operation of the present invention.Fig. 5 is the structural representation of spray gun walking case in the present invention.Fig. 6 is the schematic top plan view connecing powder groove of the present invention.Fig. 7 is the view connecing the recovery powder of powder groove of the present invention.Fig. 8 is the state diagram before the use of inventive pipeline mobile device side by side.State diagram when Fig. 9 is the use of inventive pipeline mobile device side by side.
The tunnel synchronization of a kind of parallel setting of the present invention sprays and the processing method of solidifying, and wherein, comprises the steps:
A. steel pipe is put in pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe clear water after pickling is rinsed well and dries, for subsequent use,
C. to the steel pipe heating in medium frequency of step B gained,
D. electrostatic spray is to plastic-coated synchronous inside and outside steel pipe,
E. be heating and curing, and the pipeline before solidification moves the mode of employing movement side by side;
F. Temperature fall,
Step D uses electrostatic spraying line to carry out plastic-coated operation, and electrostatic spraying line comprises steel pipe conveyer, outer spray coating device, inner spray coating device, powder recovering device and pipeline mobile device side by side.
Steel pipe conveyer comprises operation track 11, operation track 11 is provided with two travelling cars 9, the bottom of travelling car 9 is provided with road wheel 10, road wheel 10 and operation track 11 match, the top of each travelling car 9 is integrated is provided with slide rail, slide rail on each travelling car 9 slidably connects two motor cabinets 8, the side of motor cabinet 8 is provided with frame plate 2, be fixedly connected with between frame plate 2 with travelling car 9, motor cabinet 8 is fixed with steel pipe rotary electric machine 7 and shaft coupling 1, the output shaft of steel pipe rotary electric machine 7 is fixedly connected with one end of shaft coupling 1, the other end of shaft coupling 1 is provided with power transmission shaft, power transmission shaft is connected with the countershaft of frame plate 2, the middle part of power transmission shaft is fixed with moving runner 2, the integrated groove being provided with L shape in the edge of moving runner, steel pipe rotary electric machine 7 drives moving runner 6 to rotate by shaft coupling 1, groove 3 place erection on moving runner 6 on two travelling cars 9 has steel pipe 4, moving runner 6 makes steel pipe 4 original place rotate, two travelling cars 9 change in the upper distance of operation track 11 with the steel pipe 4 adapting to different length, by bolt, motor cabinet 8 be fixed on slide rail and then regulate the distance of two motor cabinets 8, namely have adjusted the spacing of two moving runners 6 to adapt to the steel pipe 4 of different tube diameters.
Outer spray coating device comprises two work boxs 13 and two groups of work box tracks 19, work box track 19 is positioned at the both sides of operation track 11, the side of each work box 13 is provided with the outer powder case 12 of spray, opposite side is provided with collection box 18, work box 13 is in n shape, one sidewall of work box 13 is fixed with how exclusive spray gun 14, adjacent two exclusive spray guns 14 are intersected with each other, intersecting angle is 30-60 degree, another side shaft of work box 13 is connected with brush axle 16, brush spindle motor is provided with above brush axle 16, brush spindle motor is positioned at work box 13, the output shaft of brush spindle motor is fixedly connected with brush axle 16, brush axle 16 is socketed with and inhales plastering roller 17, inhaling plastering roller 17 is superfine fibre textile, blower fan and powder falling storehouse is provided with in collection box 18, integrated being provided with of the sidewall of collection box 18 inhales powder mouth, inhale plastering roller 17 and be positioned at the side of inhaling powder mouth, spray in outer powder case 13 and be provided with pump box, pump box drives powder to be ejected on steel pipe 4 outer wall along outer spray gun 14, the lower hook of work box 13 hangs with that the bottom of backplate 15. backplate 15 is integrated is provided with half slot, half slot is the top with steel pipe 4, spray outer powder case 12, the bottom of collection box 18 is provided with road wheel and road wheel and work box track 19 match.
Inner spray coating device comprises two interior spray gun walking casees 22, interior spray gun 26 and the interior powder case 20 of spray, interior spray gun walking case 22 is positioned at the outside of corresponding travelling car 9, the bottom of interior spray gun walking case 22 is provided with road wheel and road wheel and operation track 11 match, the middle part of interior spray gun walking case 22 is provided with stationary pipes 23, stationary pipes 23 is socketed with extension tube 25, one end end winding support of extension tube 25 has interior spray gun 26, one end of extension tube 25 is connected with powder case 20 in spray by tube connector, the upper and lower both sides of tube wall of stationary pipes 23 are fixed with two groups of adjusting bolts 21, the bottom of interior spray gun walking case 22 is fixed with base plate 24, adjusting bolt 21 and base plate, the top of interior spray gun walking case 22 is threaded, the precession of adjusting bolt 21 or back-out and then regulate stationary pipes 23 apart from the height of base plate 24, namely the height that have adjusted interior spray gun distance ground adapts to the steel pipe of different tube diameters to make interior spray gun 26 and guarantees that interior spray gun 26 is suspended from the circle centre position of this steel pipe, pump box is provided with in powder case 20 in spray, pump box drives powder along extension tube 25, interior spray gun 26 sprays, extension tube 25 is steel part.
Powder recovering device comprises and connects powder groove 5, connecing powder groove 5 is fixed between operation track 11, connecing powder groove 5 is positioned at immediately below steel pipe, work box 13 is across the top connecing powder groove 5, the powder fractions that outer spray gun 14 sprays falls within and connects in powder groove 5, connect the middle part of powder groove 5, two ends are one-body molded is respectively provided with collection powder mouth 29, the cross section connecing powder groove 5 is semicircle shape, the bottom connecing powder groove 5 is plugged and connected with mozzle 30, multiple mozzle 30 is connected by recovery tube 31, recovery tube 31 is connected with collection box 18, the both sides of the half slot of backplate 15 are integrated is provided with link 28, link 28 is hooked with rubber flap, rubber flap is semicircle shape, rubber flap is along with two work box motions and then be pushed into by the powder connect in powder groove near collection powder mouth 29, the suction of the blower fan in collection box 18 will inhale plastering roller 17, the powder connect on powder groove 5 sucks collection box 18 and drops in powder falling storehouse.
Pipeline side by side mobile device comprises two groups of cross slide waies 35 and two transfer dollies 36, the bottom of transfer dolly 36 is provided with road wheel and road wheel and cross slide way 35 match, the outside of travelling car 9 is fixed with hydraulic cylinder 32, hydraulic cylinder 32 there is hydraulic stem by hydraulic-driven, the end axis of hydraulic stem is connected with driven pulley 33, the center of gravity of hydraulic stem is positioned at the side in the center of circle of steel pipe 4, transfer dolly 36 integral middle shaping be provided with holding groove, elastic insert 38 is bonded with in holding groove, the side of transfer dolly 36 is integrated is provided with leading arm 34, leading arm 34 is in arcuation and slow deformation extends to holding groove, the bottom of leading arm 34 is fixedly connected with bracing frame 37, the leading arm of transfer dolly 36 can be tangent with moving runner 6, Driven by Hydraulic Cylinder hydraulic stem rises and makes driven pulley jack-up steel pipe 4 and steel pipe 4 is rolled towards leading arm skew, after steel pipe drops into holding groove, by transfer dolly, steel pipe is sent into solidification case 39, solidification case 39 is arranged side by side with operation track 11 total length reducing production line, solidification case 39 is provided with combustion gas inlet pipe 40.
Stepper motor (i.e. movable motor 27) is provided with, for driving its motion or retreating on work box, on interior spray gun walking case.
The job step of step D is:
First, according to the spacing of steel pipe length adjustment two travelling cars, and travelling car is fixed on operation track by fixture block; Distance between the motor cabinet regulating each travelling car according to the thickness of steel pipe caliber, adjusting bolt in regulating on spray gun walking case, interior spray gun is made to be positioned at the circle centre position of this kind of steel pipe, steel pipe after heating in medium frequency hangs in the groove place of the moving runner of travelling car by overhead traveling crane, steel pipe rotary electric machine synchronously, in the same way moves, and steel pipe rotates along with the rotation original place of moving runner;
Secondly, two work boxs are made to be positioned at the two ends of steel pipe, interior spray gun is positioned at the two ends of steel pipe, two interior spray gun walking casees are to entering and be 5-10s to the time difference of entering, two work boxs are to entering and be 5-10s to the time difference of entering, the travel distance of two interior spray gun walking casees, work box is all set as the 1/2+15cm of steel pipe length, and namely, interior spray gun walking case, work box move to+15cm place in the middle part of steel pipe, then return; Because to advance life period difference, in one of them after spray gun walking case, work box return, spray gun walking case in another, work box have advanced to 1/2 place close to steel pipe length, seam crossing are repeated spraying.
Finally, transfer dolly is moved to laterally than tangent with moving runner along cross slide way, Driven by Hydraulic Cylinder hydraulic stem rises, center of gravity because of hydraulic stem is positioned at the side in the center of circle of steel pipe, driven pulley jack-up steel pipe and make steel pipe towards leading arm skew roll, steel pipe tumbles in pressure tank, and after using actuating unit or using Manual-pushing two groups transfer dolly by plastic-coated, steel pipe is sent in solidification case, and combustion gas inlet pipe air feed is cured operation.
The present invention adopts electrostatic hot spray process to carry out powder spray, namely high-pressure electrostatic corona field principle is utilized, using coated steel pipe ground connection as positive pole, in, outer spray gun spray nozzle connects high pressure negative electrode, make to form a powerful electric field between spray gun and steel pipe, steel pipe is after Medium frequency induction coil heats, pump box produces compressed air by powder from powder case in spray, spray outer powder case and deliver to spray gun ejection, aciculiform electroplax on shower nozzle produces corona discharge, make the powder flowed through with negative electrical charge, under the double action of electrostatic field and carrier gas, orientation flies to steel pipe internal-surface, become molten condition immediately, again pipeline is sent into baking-curing in curing oven, temperature controls at 225-260 DEG C, Temperature fall, strengthens the adhesive force of powder.Namely plastics coated tube is become.
Comparative experiments:
To produce the polyvinyl chloride spraying pipeline of 8m, use background technology CN101823044A as first group.The present invention is as second group.Adopt an interior spray gun, one group of outer spray coating device advances to other end operating type from one end is the 3rd group.Often organize processing ten, compare and be listed as follows:
| group | average time processed by single pipe | interior spraying effect | trypsin method effect | powder consumption | production line length or factory building length |
| first group | 15min | there is tomography, uneven | thin or the nothing in bottom | 40kg | need 15 meters |
| second group | 5min | evenly, spraying place 15cm is repeated in centre | evenly, spraying place 15cm is repeated in centre. | 20kg | need 16 meters |
| 3rd group | 10min | because interior spray gun trembles, after 7m, uneven | evenly | 30kg | need 25 meters |
To sum up, the inventive method is simple, easy to use, can enhance productivity, avoid spray gun tremble, dusts even and powder using efficiency is high.1, the present invention adopts the mode entered, and to entering life period difference, make often to organize interior spray gun, object for appreciation spray gun all arrives steel pipe 1/2+15cm distance, what namely there is 15cm repeats spraying place, both saved general spray time, seam crossing perfection docking while improve operating efficiency, can have been made again.2, the present invention adopts the mode entered, and namely the interior spray gun of rigidity can be the half length of conventional lance, is painted with example with 12 meters of steel tube inner sprays, spray gun in if the extension tube of 12 meters is fixing, along with motion, the vibration of extension tube end is serious, greatly affects the coating quality in pipe.And adopt entering mode, decrease the distance of extension tube half, namely extension tube 6 meters can realize, and vibration obviously reduces, and in pipe, coating quality is good.3, the present invention reclaims by inhaling plastering roller while spraying outside, connecing being reclaimed by Ji Fenkou in powder groove, greatly reducing the waste situation of powder for dropping into.(excessive powder in pipe is collected well, only blows to opposite side with from side, and is positioned at pipe, there will not be the situation of pollution, and the powder outside pipe becomes easily infected by dust, iron filings etc., so focus on the recycling of managing outer powder.) adopt mode arranged side by side to shift steel pipe, without the need to setting up overhead traveling crane, reduce equipment investment cost, namely the length reducing production line reduce factory building length, reduces workshop building cost, builds production line production cost and reduce 20-25%.
Claims (7)
1. the parallel tunnel synchronization arranged sprays and a processing method of solidifying, and it is characterized in that, comprises the steps:
A. steel pipe is put in pickling tube, carries out acid pickling and rust removing operation,
B. the steel pipe clear water after pickling is rinsed well and dries, for subsequent use,
C. to the steel pipe heating in medium frequency of step B gained,
D. electrostatic spray is to plastic-coated synchronous inside and outside steel pipe,
E. be heating and curing, and the pipeline before solidification moves the mode of employing movement side by side;
F. Temperature fall,
Step D uses electrostatic spraying line to carry out plastic-coated operation, and electrostatic spraying line comprises steel pipe conveyer, outer spray coating device, inner spray coating device, powder recovering device and pipeline mobile device side by side.
2. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 1, it is characterized in that, steel pipe conveyer comprises operation track (11), operation track (11) is provided with two travelling cars (9), the bottom of travelling car (9) is provided with road wheel (10), road wheel (10) and operation track (11) match, the top of each travelling car (9) is integrated is provided with slide rail, slide rail on each travelling car (9) slidably connects two motor cabinets (8), the side of motor cabinet (8) is provided with frame plate (2), be fixedly connected with between frame plate (2) with travelling car (9), motor cabinet (8) is fixed with steel pipe rotary electric machine (7) and shaft coupling (1), the output shaft of steel pipe rotary electric machine (7) is fixedly connected with one end of shaft coupling (1), the other end of shaft coupling (1) is provided with power transmission shaft, power transmission shaft is connected with the countershaft of frame plate (2), the middle part of power transmission shaft is fixed with moving runner (2), the integrated groove being provided with L shape in the edge of moving runner, steel pipe rotary electric machine (7) drives moving runner (6) to rotate by shaft coupling (1), groove (3) place erection on moving runner (6) on two travelling cars (9) has steel pipe (4), moving runner (6) makes steel pipe (4) original place rotate, two travelling cars (9) change in the upper distance of operation track (11) with the steel pipe (4) adapting to different length, by bolt, motor cabinet (8) be fixed on slide rail and then regulate the distance of two motor cabinets (8), namely have adjusted the spacing of two moving runners (6) to adapt to the steel pipe (4) of different tube diameters.
3. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 2, it is characterized in that, outer spray coating device comprises two work boxs (13) and two groups of work box tracks (19), work box track (19) is positioned at the both sides of operation track (11), the side of each work box (13) is provided with the outer powder case (12) of spray, opposite side is provided with collection box (18), work box (13) is in n shape, one sidewall of work box (13) is fixed with how exclusive spray gun (14), adjacent two exclusive spray guns (14) are intersected with each other, intersecting angle is 30-60 degree, another side shaft of work box (13) is connected with brush axle (16), brush axle (16) top is provided with brush spindle motor, brush spindle motor is positioned at work box (13), the output shaft of brush spindle motor is fixedly connected with brush axle (16), brush axle (16) is socketed with and inhales plastering roller (17), inhaling plastering roller (17) is superfine fibre textile, blower fan and powder falling storehouse is provided with in collection box (18), integrated being provided with of the sidewall of collection box (18) inhales powder mouth, inhale plastering roller (17) and be positioned at the side of inhaling powder mouth, spray in outer powder case (13) and be provided with pump box, pump box drives powder to be ejected on steel pipe (4) outer wall along outer spray gun (14), the lower hook of work box (13) hangs with backplate (15), the bottom of backplate (15) is integrated is provided with half slot, half slot is the top with steel pipe (4), spray outer powder case (12), the bottom of collection box (18) is provided with road wheel and road wheel and work box track (19) match.
4. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 3, it is characterized in that, inner spray coating device comprises two interior spray guns walking case (22), interior spray gun (26) and the interior powder case (20) of spray, interior spray gun walking case (22) is positioned at the outside of corresponding travelling car (9), the bottom of interior spray gun walking case (22) is provided with road wheel and road wheel and operation track (11) match, the middle part of interior spray gun walking case (22) is provided with stationary pipes (23), stationary pipes (23) is socketed with extension tube (25), one end end winding support of extension tube (25) has interior spray gun (26), one end of extension tube (25) is connected with powder case (20) in spray by tube connector, the upper and lower both sides of tube wall of stationary pipes (23) are fixed with two groups of adjusting bolts (21), the bottom of interior spray gun walking case (22) is fixed with base plate (24), adjusting bolt (21) and base plate, the top of interior spray gun walking case (22) is threaded, the height of the precession of adjusting bolt (21) or back-out and then adjustment stationary pipes (23) distance base plate (24), namely the height that have adjusted interior spray gun distance ground adapts to the steel pipe of different tube diameters to make interior spray gun (26) and guarantees that interior spray gun (26) is suspended from the circle centre position of this steel pipe, pump box is provided with in powder case (20) in spray, pump box drives powder along extension tube (25), interior spray gun (26) sprays, extension tube (25) is steel part.
5. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 4, it is characterized in that, powder recovering device comprises and connects powder groove (5), connecing powder groove (5) is fixed between operation track (11), connecing powder groove (5) is positioned at immediately below steel pipe, work box (13) is across the top connecing powder groove (5), the powder fractions that outer spray gun (14) sprays falls within and connects in powder groove (5), connect the middle part of powder groove (5), two ends are one-body molded is respectively provided with Ji Fenkou (29), the cross section connecing powder groove (5) is semicircle shape, the bottom connecing powder groove (5) is plugged and connected with mozzle (30), multiple mozzle (30) is connected by recovery tube (31), recovery tube (31) is connected with collection box (18), the both sides of the half slot of backplate (15) are integrated is provided with link (28), (28) are hooked with rubber flap to link, rubber flap is semicircle shape, rubber flap is along with two work box motions and then be pushed into by the powder connect in powder groove near Ji Fenkou (29), the suction of the blower fan in collection box (18) will inhale plastering roller (17), the powder connect on powder groove (5) sucks collection box (18) and drops in powder falling storehouse.
6. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 5, it is characterized in that, pipeline side by side mobile device comprises two groups of cross slide waies (35) and two transfer dollies (36), the bottom of transfer dolly (36) is provided with road wheel and road wheel and cross slide way (35) match, the outside of travelling car (9) is fixed with hydraulic cylinder (32), (32) have hydraulic stem by hydraulic-driven to hydraulic cylinder, the end axis of hydraulic stem is connected with driven pulley (33), the center of gravity of hydraulic stem is positioned at the side in the center of circle of steel pipe (4), transfer dolly (36) integral middle shaping be provided with holding groove, elastic insert (38) is bonded with in holding groove, the side of transfer dolly (36) is integrated is provided with leading arm (34), leading arm (34) is in arcuation and slow deformation extends to holding groove, the bottom of leading arm (34) is fixedly connected with bracing frame (37), the leading arm of transfer dolly (36) can be tangent with moving runner (6), Driven by Hydraulic Cylinder hydraulic stem rises and makes driven pulley jack-up steel pipe (4) and steel pipe (4) is rolled towards leading arm skew, after steel pipe drops into holding groove, by transfer dolly, steel pipe is sent into solidification case (39), solidification case (39) and operation track (11) are arranged side by side the total length reducing production line, solidification case (39) is provided with combustion gas inlet pipe (40).
7. the parallel tunnel synchronization arranged sprays and the processing method of solidifying according to claim 6, and it is characterized in that, the job step of step D is:
First, according to the spacing of steel pipe length adjustment two travelling cars, and travelling car is fixed on operation track by fixture block; Distance between the motor cabinet regulating each travelling car according to the thickness of steel pipe caliber, adjusting bolt in regulating on spray gun walking case, interior spray gun is made to be positioned at the circle centre position of this kind of steel pipe, steel pipe after heating in medium frequency hangs in the groove place of the moving runner of travelling car by overhead traveling crane, steel pipe rotary electric machine synchronously, in the same way moves, and steel pipe rotates along with the rotation original place of moving runner;
Secondly, two work boxs are made to be positioned at the two ends of steel pipe, interior spray gun is positioned at the two ends of steel pipe, two interior spray gun walking casees are to entering and be 5-10s to the time difference of entering, two work boxs are to entering and be 5-10s to the time difference of entering, the travel distance of two interior spray gun walking casees, work box is all set as the 1/2+15cm of steel pipe length, and namely, interior spray gun walking case, work box move to+15cm place in the middle part of steel pipe, then return; Because to advance life period difference, in one of them after spray gun walking case, work box return, spray gun walking case in another, work box have advanced to 1/2 place close to steel pipe length, seam crossing are repeated spraying;
Finally, transfer dolly is moved to laterally than tangent with moving runner along cross slide way, Driven by Hydraulic Cylinder hydraulic stem rises, center of gravity because of hydraulic stem is positioned at the side in the center of circle of steel pipe, driven pulley jack-up steel pipe and make steel pipe towards leading arm skew roll, steel pipe tumbles in pressure tank, and after using actuating unit or using Manual-pushing two groups transfer dolly by plastic-coated, steel pipe is sent in solidification case, and combustion gas inlet pipe air feed is cured operation.
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| CN105413978B (en) | 2018-06-19 |
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Denomination of invention: A parallel processing method for synchronous spraying and curing of pipes Effective date of registration: 20220527 Granted publication date: 20180619 Pledgee: China Minsheng Banking Corp Qingdao branch Pledgor: Qingdao Haode Boer Industrial Co.,Ltd. Registration number: Y2022370010078 |
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Granted publication date: 20180619 Pledgee: China Minsheng Banking Corp Qingdao branch Pledgor: Qingdao Haode Boer Industrial Co.,Ltd. Registration number: Y2022370010078 |
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Denomination of invention: A Processing Method for Parallel Setting of Pipeline Synchronous Spraying and Curing Granted publication date: 20180619 Pledgee: China Minsheng Banking Corp Qingdao branch Pledgor: Qingdao Haode Boer Industrial Co.,Ltd. Registration number: Y2024370010069 |