CN114164392A - Be used for synchronous zinc paint finishing that spouts of multitube - Google Patents
Be used for synchronous zinc paint finishing that spouts of multitube Download PDFInfo
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- CN114164392A CN114164392A CN202111496347.6A CN202111496347A CN114164392A CN 114164392 A CN114164392 A CN 114164392A CN 202111496347 A CN202111496347 A CN 202111496347A CN 114164392 A CN114164392 A CN 114164392A
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- dust removal
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 11
- 239000011701 zinc Substances 0.000 title claims abstract description 11
- 239000003973 paint Substances 0.000 title claims description 3
- 230000001360 synchronised effect Effects 0.000 title abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 107
- 239000007921 spray Substances 0.000 claims abstract description 80
- 239000000428 dust Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005484 gravity Effects 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000010891 electric arc Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
Abstract
The invention relates to a multi-pipe synchronous zinc spraying system, which comprises a spraying device, a dust removal device, a workpiece conveying device and a rack, wherein the dust removal device is a gravity settling device with a settling space inside, and is provided with a feed inlet, a discharge outlet, an air inlet and an air outlet which are communicated with the settling space, the dust removal device and the spraying device are arranged on the rack, the workpiece conveying device is arranged on the feed side and the discharge side of the dust removal device and is positioned outside the dust removal device, the spraying device comprises a spray gun, a feeding mechanism, a power supply device and an air supply device, the feed inlet of the spray gun is communicated with the discharge outlet of the feeding mechanism, a gun body of the spray gun is arranged on the rack, a nozzle of the spray gun extends into the settling space, the discharge direction of the nozzle forms an angle with the conveying direction of the workpiece conveying device and is positioned in the same plane and faces the feeding direction of the workpiece conveying device, and the power supply device supplies power to the spray gun, the power supply voltage is 25-30v, the gas supply device is a high-pressure and low-pressure gas supply device, the high-pressure gas supply is 4-6bar, and the low-pressure gas supply is 2-4 bar.
Description
Technical Field
The invention relates to the technical field of electric arc spraying equipment, in particular to a multi-pipe synchronous zinc spraying system.
Background
With the progress of society and the continuous development of industrialization, the electric arc spraying technology is more and more widely applied, namely, the electric arc spraying technology is used for enabling charged corrosion-resistant metal wires to generate electric arc combustion through a special power supply, and high-temperature liquid drops of molten metal are sprayed, atomized and sprayed to the surface of a metal component needing to be protected by compressed air in a very short time to form a spraying layer which is high in purity and strong in binding force and combines a mechanical method and a metallurgical method. The method is suitable for long-acting corrosion prevention, wear resistance, equipment repair, old part renovation, product surface strengthening and the like in the manufacturing industry, the maintenance industry and related industries, and has great economic benefit and quite wide application prospect. In the process of spraying zinc on the aluminum flat tube, a plurality of existing spraying devices cannot well realize the full utilization of spraying raw materials while the spraying quality is ensured.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a multi-tube synchronous zinc spraying system which comprises a spraying device, a dust removal device, a workpiece conveying device and a frame, wherein the dust removal device is a gravity settling device with a settling space inside, and is provided with a feed inlet, a discharge outlet, an air inlet and an air outlet which are communicated with the settling space, the dust removal device and the spraying device are arranged on the frame, the workpiece conveying device is arranged on the feed side and the discharge side of the dust removal device and is positioned outside the dust removal device, the spraying device comprises a spray gun, a feeding mechanism, a power supply device and an air supply device, the feed inlet of the spray gun is communicated with the discharge outlet of the feeding mechanism, a gun body of the spray gun is arranged on the frame, a nozzle of the spray gun extends into the settling space, the discharge direction of the nozzle forms an angle with the conveying direction of the workpiece conveying device and is positioned in the same plane, the air inlet and the air outlet are parallel in air inlet and outlet directions, arranged on two opposite sides of a settlement space and staggered in position.
Further, dust collector includes spray booth and dust removal pipeline, the spray booth installs in the frame, and has the shell structure who subsides the space for inside, and has feed inlet and the discharge gate that supplies the work piece to pass through on the spray booth lateral wall, and the spray booth top is equipped with the air intake, and the bottom is equipped with the air outlet, dust removal pipeline respectively with air intake and air outlet sealing connection, with spray booth inside subside space and outside gas intercommunication, subside space cross sectional area by feed inlet and discharge gate position respectively to top air intake and bottom air outlet convergent, the gradual shrinkage angle is A and B respectively, A is less than B, and the top surface and the bottom surface of subside space are parallel. 3. The system of claim 2, wherein: the settling space is communicated with one end of the air inlet and is of an eccentric quadrangular frustum flaring structure towards the inside, the upper bottom deviates from the lower bottom along the direction vertical to the material conveying direction, the deviation M1 is 2/9-1/3 of the length of the lower bottom, the ratio of the length of the upper bottom to the length of the lower bottom N1 is 2/9-4/9, the included angle A between the two side surfaces of the settling space in the material conveying direction and the vertical direction is 20-40 degrees, the settling space is communicated with one side of the air outlet and is of an eccentric quadrangular frustum necking structure from the inside of the settling space to the air outlet, the lower bottom deviates from the upper bottom along the direction opposite to the air inlet, the deviation M2 is 2/9-1/3 of the length of the upper bottom, the ratio of the length of the lower bottom to the upper bottom N2 is 2/9-4/9, the included angle B between the two side surfaces of the material conveying direction and the vertical direction is 40-60 degrees, and the upper bottom is vertically opposite to the lower bottom of the air inlet side, and a material conveying area is arranged in the area between the air outlet and the air inlet.
Furthermore, the vector included angle between the discharge direction of the spray gun and the conveying direction of the workpiece is 120-.
Further, the spraying device further comprises a guide rail and a sliding block, the guide rail is fixedly installed on the rack, the extending direction of the guide rail is perpendicular to the spray nozzle discharging direction of the spray gun and the workpiece conveying direction, the sliding block is connected with the spray gun and is slidably installed on the guide rail, a locking bolt is arranged on the sliding block, and the sliding block and the guide rail can be fixed in relative position through the locking bolt.
Furthermore, the spraying device further comprises a ball screw mechanism, the ball screw mechanism comprises a nut and a screw rod, the nut is fixedly connected with the sliding block, the screw rod is in threaded connection with the nut and is rotatably connected with the spray gun through a thrust bearing, and the spray gun can be driven to move relative to the sliding block along the nozzle discharging direction.
Further, the spraying device is provided with 2 groups, and is arranged symmetrically about the workpiece to be sprayed.
Furthermore, the number of the spray guns and the slide blocks is n.
Further, work piece conveyor includes extruder and guider, the extruder just is located the feeding side with the adjacent setting of dust collector, guider quantity is 2, and one of them sets up between extruder and dust collector, and another sets up at the ejection of compact side, and guider includes graphite cake and graphite roller, the graphite cake sets up in work piece conveying line below, and contacts with the work piece bottom, the graphite roller sets up in pairs, is located work piece conveying line both sides respectively, and the vertically setting is on the graphite cake top surface, and roll surface and work piece both sides face butt.
A working method for the multi-tube synchronous zinc spraying system according to the above, comprising the following steps:
the method comprises the following steps: adjusting parameters, and setting spraying parameters of a spraying system according to the state of the workpiece and the spraying requirement, wherein the spraying parameters comprise the feeding speed of a feeding mechanism, the output voltage of a power supply device, the air supply pressure of an air supply device, the spraying speed of a spraying device and the angle of a spray gun;
step two: starting the equipment, starting the dust removal device, starting feeding after the dust removal device normally operates, and starting the spraying device when the discharging speed of the extruder reaches 30 m/min;
step three: monitoring spraying, namely adjusting the spraying speed of a spraying device according to the discharging speed of an extruder;
step four: and stopping spraying, and stopping the spraying device when the discharging speed of the extruding machine is reduced to below 25 m/min.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: by setting the included angle between the discharging direction of the spray gun and the conveying direction of the workpiece and the distance between the spray gun nozzle and the workpiece to be sprayed, the spraying effect and quality are ensured and the utilization rate of the spraying raw materials is improved; through setting up dust collector, can guarantee the dust removal effect, improve the spraying quality, the cooperation spray gun angle can obtain better spraying effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of a part of the structure of the spray coating device of the present invention;
FIG. 4 is a schematic view of the structure of the guide device of the present invention;
FIG. 5 is a schematic front view of the dust removing device of the present invention;
FIG. 6 is a schematic side view of the dust removing device of the present invention.
Legend: 1. a spraying device; 11. a spray gun; 12. a guide rail; 13. a slider; 131. locking the bolt; 14. a ball screw mechanism; 141. a nut; 142. a screw rod; 15. a feeding mechanism; 2. a dust removal device; 21. a spray chamber; 211. an air inlet; 212. an air outlet; 22. a dust removal pipeline; 23. a settling space; 24. a feed inlet; 25. a discharge port; 3. a workpiece conveying device; 31. an extruder; 32. a guide device; 321. a graphite plate; 322. a graphite roller; 4. and a frame.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1 and fig. 2, a spraying system for multi-tube synchronous zinc spraying comprises a spraying device 1, a dust removing device 2, a workpiece conveying device 3 and a frame 4, wherein the dust removing device 2 is a gravity settling device with a settling space 23 inside, and is provided with a feed inlet 24, a discharge outlet 25, an air inlet 211 and an air outlet 212 which are communicated with the settling space 23, the dust removing device 2 and the spraying device 1 are installed on the frame 4, the workpiece conveying device 3 is arranged on the feed side and the discharge side of the dust removing device 2 and is positioned outside the dust removing device 2, the spraying device 1 comprises a spray gun 11, a feeding mechanism 15, a power supply device 16 and an air supply device 17, the feed inlet of the spray gun 11 is communicated with the discharge outlet of the feeding mechanism 15, the gun body of the spray gun 11 is installed on the frame 4, the nozzle of the spray gun 11 extends into the settling space 23, the discharge direction of the nozzle forms an angle with the conveying direction of the workpiece conveying device 3 and is positioned in the same plane, the air inlet 211 and the air outlet 212 are parallel in air inlet and outlet directions, arranged on two opposite sides of the sedimentation space 23 and staggered in position, and are arranged in the feeding direction of the workpiece conveying device 3, the power supply device 16 supplies power to the spray gun 11 with the power supply voltage of 25-30v, the air supply device 17 is a high-pressure and low-pressure air supply device, the high-pressure air supply device supplies air at 4-6bar, the low-pressure air supply device supplies air at 2-4 bar. Inject supply voltage and air feed pressure, the coating performance that can guarantee the spraying is good, and the dislocation set's mode is imported and exported in the cooperation, has improved and has subsided the effect, has further promoted the spraying quality, and is concrete, and spray gun 11 can be that the model is: a spray gun type 528; the power supply device 16 is a power supply of model S250; the air supply 17 may be an FQ13 model air supply.
As shown in fig. 5 and 6, one end of the settling space 23 communicating with the air inlet 211 is of an eccentric quadrangular frustum flaring structure towards the inside, the upper bottom deviates from the lower bottom along the vertical material conveying direction, the deviation M1 is 2/9-1/35/16 of the length of the lower bottom side L2, the ratio N1 of the length of the upper bottom side L1 to the length of the lower bottom side L2 is 2/9-4/9, the included angle a between the two side surfaces of the material conveying direction and the vertical direction is 20-40 °, one side of the settling space 23 communicating with the air outlet 212 is of an eccentric quadrangular frustum necking structure from the inside of the settling space 23 to the air outlet 212, the deviation M2 is 2/9-1/3 of the length of the upper bottom side L4, the ratio N2 of the length L3 of the length of the lower bottom side L4 is 2/9-4/9, the included angle B between the two side surfaces of the material conveying direction and the vertical direction is 40-60 °, the upper bottom surface is vertically opposite to the lower bottom surface of the air inlet 211 side, and a material conveying area is arranged in an area between the air outlet 212 and the air inlet 211. By limiting the size, the sedimentation effect can be further improved by matching with the arrangement of the inlet and the outlet and the range values of the power supply voltage and the air supply pressure, and the performance of the coating is greatly influenced.
The vector included angle between the discharge direction of the spray gun 11 and the workpiece conveying direction is 135 degrees for 120 degrees, and the distance between the spray nozzle of the spray gun 11 and the surface of the workpiece to be sprayed in the discharge direction of the spray gun is 250mm for 150 degrees. The spray gun 11 sprays the surface of a workpiece in the process of conveying the workpiece forwards, the vector included angle between the discharging direction of the spray gun 11 and the conveying direction of the workpiece is 120-135 degrees, the spraying effect and quality can be ensured by spraying at the angle, the bonding strength between the coating and the workpiece can be reduced when the angle is too large, the spraying quality is reduced, the bonding strength between the coating and the workpiece can be increased when the angle is too small, the coating is too thick, the spraying effect is influenced, and raw materials are wasted, the distance between the spray gun 11 nozzle and the surface of the workpiece to be sprayed in the discharging direction of the spray gun is 150-250mm, the bonding strength between the coating and the workpiece can be reduced when the distance is too large, the spraying area of the nozzle on the workpiece is leaked due to too small distance, the spraying effect and quality of the workpiece can be ensured, the spraying effect cannot be leaked, the spraying efficiency is high, and the size of the included angle has a great influence on the sedimentation effect through experimental research, this was not found in previous studies.
As shown in fig. 1 and 3, the spraying device 1 further includes a guide rail 12 and a slider 13, the guide rail 12 is fixedly mounted on the frame 4, and the extending direction of the guide rail 12 is perpendicular to the plane where the nozzle discharging direction of the spray gun 11 and the workpiece conveying direction are located, the slider 13 is connected with the spray gun 11 and is slidably mounted on the guide rail 12, and the slider 13 is provided with a locking bolt 131, the slider 13 and the guide rail 12 can be relatively fixed by the locking bolt 131, when the position of the workpiece to be sprayed is changed, the position of the slider 13 can be moved by loosening the locking bolt 131, so as to change the spraying position of the spray gun 11, after being adjusted to a proper position, the locking bolt 131 is tightened to abut against the guide rail 12, so as to fix the spraying position of the spray gun 11; preferably, the number of the spray guns 11 and the slide blocks 13 is n, when the width of a workpiece to be sprayed is wide or a special spraying requirement exists or a plurality of workpieces exist, the spraying can be simultaneously carried out by combining the n spray guns 11, and the spraying clearance of the spray guns 11 can be adjusted or the installation number of the spray guns 11 can be changed by adjusting the positions of the slide blocks 13 so as to meet different spraying requirements; particularly, the spraying device is also suitable for the arrangement that when the number of workpieces to be sprayed is n and the workpieces to be sprayed are arranged on the same plane in parallel, the spray guns 11 and the slide blocks 13 correspond to the workpieces to be sprayed one by one, so that a plurality of workpieces can be sprayed simultaneously, and the spraying efficiency is improved. The number is n, and the number used in this embodiment is 6 as shown in fig. 3, but the number is not limited to this, and the number is adjusted according to the size of the device and the needs of the working conditions.
The spraying device 1 further comprises a ball screw mechanism 14, the ball screw mechanism 14 comprises a nut 141 and a screw 142, the nut 141 is fixedly connected with the sliding block 13, the screw 142 is in threaded connection with the nut 141 and is rotatably connected with the spray gun 11 through a thrust bearing, the spray gun 11 can be driven to move relative to the sliding block 13 along the spray nozzle discharging direction, and by arranging the ball screw mechanism 14, the distance between the spray nozzle of the spray gun 11 and a workpiece to be sprayed can be adjusted according to working condition requirements, so that different spraying requirements can be met, and the spraying device is convenient to adjust and use.
Preferably, the spraying device 1 is provided with 2 groups, is symmetrically arranged about a workpiece to be sprayed, can be used for spraying the upper surface and the lower surface of the workpiece at the same time, greatly improves the spraying efficiency and saves the time required by spraying.
As shown in fig. 1 and 4, the workpiece conveying device 3 includes an extruder 31 and a guide device 32, the extruder 31 is disposed adjacent to the dust collector 2 and is located at a feeding side, the extruder 31 extrudes the raw material to form a wide flat workpiece, and continuously conveys the workpiece forward by extrusion force, the number of the guide device 32 is 2, one of the guide device is disposed between the extruder 31 and the dust collector 2, and the other guide device is disposed at a discharging side, the guide device 32 includes a graphite plate 321 and graphite rollers 322, the graphite plate 321 is disposed below the workpiece conveying line and is in contact with the bottom end of the workpiece for bearing the weight of the workpiece and preventing the workpiece from bending deformation after being extruded too long, the graphite rollers 322 are disposed in pairs and are respectively located at two sides of the workpiece conveying line and are vertically disposed on the top surface of the graphite plate 321, and the roller surfaces are abutted against two side surfaces of the workpiece, the graphite rollers 322 are used for limiting two sides of the workpiece and preventing the workpiece from shifting to two sides during the conveying process, the guiding device 32 is made of graphite material, so that the lubricating performance is good, the friction during conveying can be reduced, and particularly, the extruding machine 31 can be an extruding machine with the model number of 27.5 MN.
A working method for a multi-pipe synchronous zinc spraying system comprises the following steps:
the method comprises the following steps: and adjusting parameters, and setting spraying parameters of the spraying system according to the state of the workpiece and the spraying requirement, wherein the spraying parameters comprise the feeding speed of the feeding mechanism 15, the output voltage of the power supply device 16, the air supply pressure of the air supply device 17, the spraying speed of the spraying device 1 and the angle of the spray gun 11.
Step two: starting the equipment, starting the dust removal device 2, starting feeding after the dust removal device 2 operates normally, and starting the spraying device 1 when the discharging speed of the extruder 31 reaches 30 m/min.
Step three: the spraying monitoring adjusts the spraying speed of the spraying device 1 according to the discharge speed of the extruder 31.
Step four: the spraying is stopped, and the spraying device 1 is stopped when the discharge speed of the extruder 31 is reduced to below 25 m/min.
Example 1
In the embodiment, the power supply voltage V of the power supply device 16 is 25-30V, the high-pressure gas supply P1 of the gas supply device 17 is 4-6bar, and the low-pressure gas supply P2 is 2-4 bar; the sedimentation space 23 is characterized in that the deviation amount M1 of the upper bottom from the lower bottom is 5/16 of the length of the lower bottom, the ratio N1 of the length of the upper bottom to the length of the lower bottom is 1/3, the included angle A between two side faces in the material conveying direction and the vertical direction is 30 degrees, the sedimentation space (23) is communicated with one side of the air outlet (212), the deviation amount M2 of the lower bottom from the upper bottom is 5/16 of the length of the upper bottom, the ratio N2 of the length of the lower bottom to the length of the upper bottom is 1/3, the included angle B between two side faces in the material conveying direction and the vertical direction is 50 degrees, materials are conveyed in the area between the air inlet and the air outlet, the gas flow rate in the sedimentation space is 25M/s, the distance between the spray gun 11 and the surface of a workpiece to be sprayed in the spray gun discharging direction is 200mm, the angle is 135 degrees, and the rest of the same embodiment.
See table 1 below for parameters for examples 2-13 and comparative examples 1-7, the remainder of which is the same as example 1.
TABLE 1
As can be seen from the above table, example 1 is the best example, which has better effects on the bonding strength, the wire utilization rate, the coverage rate, the roughness and the uniformity of the thickness, compared with examples 1 and 2, after the power supply pressure and the air supply pressure are increased, not only the wire utilization rate is reduced, but the pressure roughness should be reduced by increasing the pressure conventionally, but also the roughness and the uniformity of the thickness in example 2 are reduced, the detection shows that the surface coating has non-uniform particles, which reflects the aggregation of the sedimentation particles on the surface of the workpiece to be sprayed, caused by the poor sedimentation effect, the bonding strength in example 3 is reduced greatly, the wire utilization rate is reduced and the uniformity of the coverage rate and the thickness is reduced greatly after the voltage, the air supply pressure and the N1 and N2 are adjusted in example 4, the deviation amount, the included angle and the N1 and N2 are respectively adjusted in examples 6-8 and 10, and the parameters have influences on the roughness and the uniformity of the thickness, while it can be seen from examples 9 and 13 that the influence on the uniformity of roughness and thickness is large when the deviations M1 and M2 are different, and the reduction in both is large when they are different, it can be seen from examples 11 and 12 that the lance angle has a large influence not only on the bonding strength but also on the uniformity of roughness and thickness, which is a phenomenon not found before; from comparative examples 1 to 7, it can be seen that the decrease in the relevant parameter index is large when the parameter index is outside the required range, indicating that a good product can be obtained within the required range.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a be used for zinc paint finishing is spouted in step to multitube which characterized in that: the device comprises a spraying device (1), a dust removal device (2), a workpiece conveying device (3) and a rack (4), wherein the dust removal device (2) is a gravity settling device with a settling space (23) inside, a feed inlet (24), a discharge outlet (25), an air inlet (211) and an air outlet (212) which are communicated with the settling space (23) are arranged, the dust removal device (2) and the spraying device (1) are installed on the rack (4), the workpiece conveying device (3) is arranged on the feed side and the discharge side of the dust removal device (2) and is positioned outside the dust removal device (2), the spraying device (1) comprises a spray gun (11), a feed mechanism (15), a power supply device (16) and an air supply device (17), the feed inlet of the spray gun (11) is communicated with the discharge outlet of the feed mechanism (15), and the gun body of the spray gun (11) is installed on the rack (4), and the nozzle of spray gun (11) stretches into in subsiding space (23), and the ejection of compact direction of nozzle and the direction of delivery of work piece conveyor (3) become the angle and be located the coplanar to towards work piece conveyor (3) direction of feed setting, power supply unit (16) are spray gun (11) power supply, and supply voltage is 25-30v, air feeder (17) are high low pressure air feeder, and high pressure air feed is 4-6bar, and the low pressure air feed is 2-4bar, air intake (211) and air outlet (212) business turn over wind direction parallel, and set up in subsiding space (23) relative both sides to the setting of staggering in position.
2. The system of claim 1, wherein: the dust removal device (2) comprises a spraying chamber (21) and a dust removal pipeline (22), the spraying chamber (21) is arranged on the frame (4), and is a shell structure with a settling space (23) inside, a feed inlet (24) and a discharge outlet (25) for workpieces to pass through are arranged on the side wall of the spraying chamber (21), the top of the spraying chamber (21) is provided with an air inlet (211), the bottom is provided with an air outlet (212), the dust removal pipeline (22) is respectively connected with the air inlet (211) and the air outlet (212) in a sealing way to communicate the sedimentation space (23) in the spraying chamber (21) with the outside air, the cross section area of the settling space (23) is gradually reduced from the feed inlet and the discharge outlet to the top air inlet (211) and the bottom air outlet (212), the reducing angles are A and B respectively, A is smaller than B, and the top surface and the bottom surface of the settling space (23) are parallel.
3. The system of claim 2, wherein: the settling space (23) is communicated with one end of the air inlet (211) and is of an eccentric quadrangular frustum flaring structure towards the inside, the upper bottom deviates from the lower bottom along the direction vertical to the material conveying direction, the deviation M1 is 2/9-1/3 of the length of the lower bottom, the ratio N1 of the length of the upper bottom to the length of the lower bottom is 2/9-4/9, the included angle A between the two side surfaces of the material conveying direction and the vertical direction is 20-40 degrees, the settling space (23) is communicated with one side of the air outlet (212) and is of an eccentric quadrangular frustum necking structure from the inside of the settling space (23) to the air outlet (212), the lower bottom deviates from the upper bottom along the direction opposite to the air inlet (211), the deviation M2 is 2/9-1/3 of the length of the upper bottom, the ratio N2 of the length of the lower bottom to the upper bottom is 2/9-4/9, the included angle B between the two side surfaces of the material conveying direction and the vertical direction is 40-60 degrees, and the upper bottom surface is vertically and oppositely arranged with the lower bottom surface at the side of the air inlet (211), and a material conveying area is arranged in the area between the air outlet (212) and the air inlet (211).
4. The system of claim 1, wherein: the vector included angle between the discharge direction of the spray gun (11) and the workpiece conveying direction is 120-135 degrees, and the distance between the spray nozzle of the spray gun (11) and the surface of the workpiece to be sprayed in the discharge direction of the spray gun is 150-250 mm.
5. The system of claim 1, wherein: spraying device (1) still includes guide rail (12) and slider (13), guide rail (12) fixed mounting is on frame (4), and the nozzle ejection of compact direction and the work piece direction of delivery of extending direction perpendicular to spray gun (11), slider (13) are connected with spray gun (11), and slidable mounting is on guide rail (12), and is provided with locking bolt (131) on slider (13), can carry out relative position with slider (13) and guide rail (12) through locking bolt (131) and fix.
6. The system of claim 2, wherein: the spraying device (1) further comprises a ball screw mechanism (14), the ball screw mechanism (14) comprises a nut (141) and a screw rod (142), the nut (141) is fixedly connected with the sliding block (13), the screw rod (142) is in threaded connection with the nut (141) and is rotatably connected with the spray gun (11) through a thrust bearing, and the spray gun (11) can be driven to move relative to the sliding block (13) along the nozzle discharging direction.
7. The system of claim 4, wherein: the spraying device (1) is provided with 2 groups, and is symmetrically arranged relative to a workpiece to be sprayed.
8. The system of claim 2, wherein: the number of the spray guns (11) and the slide blocks (13) is n.
9. The system of claim 1, wherein: work piece conveyor (3) are including extruder (31) and guider (32), extruder (31) and dust collector (2) adjacent setting just are located the feeding side, guider (32) quantity is 2, and one of them sets up between extruder (31) and dust collector (2), and another setting is in the ejection of compact side, and guider (32) include graphite cake (321) and graphite roller (322), graphite cake (321) set up in work piece conveying line below, and contact with the work piece bottom, graphite roller (322) set up in pairs, are located work piece conveying line both sides respectively, and the vertically sets up on graphite cake (321) top surface, and roll surface and work piece both sides face butt.
10. The operating method for the multi-tube simultaneous zinc spray coating system according to any one of claims 1 to 9, wherein: it comprises the following steps:
the method comprises the following steps: adjusting parameters, and setting spraying parameters of a spraying system according to the state of a workpiece and the spraying requirement, wherein the spraying parameters comprise the feeding speed of a feeding mechanism (15), the output voltage of a power supply device (16), the air supply pressure of an air supply device (17), the spraying speed of a spraying device (1) and the angle of a spray gun (11);
step two: starting the equipment, starting the dust removal device (2), starting feeding after the dust removal device (2) normally operates, and starting the spraying device (1) when the discharging speed of the extruder (31) reaches 30 m/min;
step three: monitoring spraying, namely adjusting the spraying speed of the spraying device (1) according to the discharging speed of the extruding machine (31);
step four: the spraying is stopped, and the spraying device (1) is stopped when the discharge speed of the extruder (31) is reduced to below 25 m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111496347.6A CN114164392B (en) | 2021-12-08 | 2021-12-08 | Synchronous zinc spraying system for multiple pipes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111496347.6A CN114164392B (en) | 2021-12-08 | 2021-12-08 | Synchronous zinc spraying system for multiple pipes |
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| CN114164392B CN114164392B (en) | 2024-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870195A (en) * | 2022-10-31 | 2023-03-31 | 山东北溟科技有限公司 | Marine shaft part repairing and remanufacturing process |
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|---|---|---|---|---|
| US5791560A (en) * | 1996-12-09 | 1998-08-11 | Thermion, Inc. | Method and apparatus for spraying metal to form a coating |
| CN206244865U (en) * | 2016-10-28 | 2017-06-13 | 陕西瑞特快速制造工程研究有限公司 | A kind of orientation metal dusting device of electric arc spraying change system |
| CN206334804U (en) * | 2016-12-20 | 2017-07-18 | 一同鸿昊（北京）航空航天科技股份有限公司 | Eight aluminium flat conduit paint finishings |
| CN212039646U (en) * | 2020-02-27 | 2020-12-01 | 浙江固雅环境装备有限公司 | Dust filter |
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2021
- 2021-12-08 CN CN202111496347.6A patent/CN114164392B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791560A (en) * | 1996-12-09 | 1998-08-11 | Thermion, Inc. | Method and apparatus for spraying metal to form a coating |
| CN206244865U (en) * | 2016-10-28 | 2017-06-13 | 陕西瑞特快速制造工程研究有限公司 | A kind of orientation metal dusting device of electric arc spraying change system |
| CN206334804U (en) * | 2016-12-20 | 2017-07-18 | 一同鸿昊（北京）航空航天科技股份有限公司 | Eight aluminium flat conduit paint finishings |
| CN212039646U (en) * | 2020-02-27 | 2020-12-01 | 浙江固雅环境装备有限公司 | Dust filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870195A (en) * | 2022-10-31 | 2023-03-31 | 山东北溟科技有限公司 | Marine shaft part repairing and remanufacturing process |
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| CN114164392B (en) | 2024-03-05 |
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